CN107676507A - A kind of combination check valve - Google Patents
A kind of combination check valve Download PDFInfo
- Publication number
- CN107676507A CN107676507A CN201711047196.XA CN201711047196A CN107676507A CN 107676507 A CN107676507 A CN 107676507A CN 201711047196 A CN201711047196 A CN 201711047196A CN 107676507 A CN107676507 A CN 107676507A
- Authority
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- China
- Prior art keywords
- valve
- check valve
- valve body
- valve element
- medium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 57
- 230000004888 barrier function Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a kind of combination check valve, including valve body (4), the first check valve (1) is provided with the valve body (4) side by side, second check valve (3) and sealing unit (2), first check valve (1) exports with the second check valve (3) first medium spaced apart that formed, first check valve (1) includes the first valve body (102), first valve element (101) and the spring (105) for being sheathed on the first valve element (101) afterbody, second check valve (3) includes the second valve body (301), second valve element (302) and the spring (105) for being sheathed on the second valve element (302) afterbody.The combination check valve of the present invention, a variety of different mediums control that medium enters under combination check valve state from different inlet and outlet respectively is realized, realizes the multi-functional control of pipe-line system, and effectively prevent medium back flow, and then ensure pipe-line system normal operation.
Description
Technical field
The invention belongs to valve technology field, more particularly, to a kind of combination check valve.
Background technology
Pipeline control system is largely controlled by valve, and check valve is as one kind therein, to pipeline
Control plays vital effect, and check valve is also known as check-valves or non-return valve, for preventing medium reverse flow in pipe-line system
Dynamic, how effective and multi-functional control is carried out to pipe-line system using check valve is people's focus of attention always, here
The frame mode of check valve is that it is crucial.
Traditional check valve has housing, valve member and spring, formed with fluid passage and valve seat, valve member at housing
Contact valve seat to close fluid passage and valve member is separated to open fluid passage from valve seat, spring along valve closing direction to
Valve member exerts a force.In addition, when the active force of the fluid along valve opening direction exceedes the effect along the spring of valve closing direction
During power, check valve is opened.
However, because the opposite side of the valve seat in the valve member in traditional check valve is used as fluid passage and fluid edge
Valve member flowing, therefore is produced due to the flow of fluid during check valve is opened with fluid flow direction (that is, along valve
The reciprocating direction of part) parallel pressure, easily cause medium back flow, influence the normal work of valve body, and valve member
Easily (that is, the oscillation behavior for undergoing non-convergent backfeed loop) is vibrated on the reciprocating direction of valve member.Further, since valve
The vibration of part, produce in pressure fluctuation, or the equipment and pipeline vibrated due to pressure fluctuation and produce noise.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the present invention provides a kind of combination check valve, it is intended that
First check valve and the integrated arrangement of the second check valve, and the first check valve, the second check valve and valve body are realized by sealing unit
Sealing, so as to form multiple medium gateways and circulation passage, realizing medium, to enter combination from different inlet and outlet respectively single
Controlled to a variety of different mediums under valve state, realize the multi-functional control of pipe-line system, and effectively prevent medium back flow, entered
And ensure pipe-line system normal operation.
To achieve these goals, the present invention provides a kind of combination check valve, including valve body,
The first check valve, the second check valve and sealing unit are provided with the valve body side by side, first check valve and the
Two check valves are spaced apart to form first medium outlet, and is realized by the sealing unit close between the valve body
Envelope；
First check valve includes the first valve body, the first valve element and the spring for being sheathed on the first valve element afterbody, and described
The excircle of one valve body offers second medium outlet and the circular passage of flow of media, and the circular passage passes through circular hole and institute
The connection of the first valve element is stated, the spring is used to compress or unclamp first valve element, realizes the barrier or circulation of medium；
Second check valve includes the second valve body, the second valve element and the spring for being sheathed on the second valve element afterbody, and described
For the excircle of two valve bodies located at the 3rd media outlet and the circular passage of flow of media, the circular passage passes through circular hole and second
Valve element connects, and the spring is used to compress or unclamp second valve element, realizes the barrier or circulation of medium.
The first medium outlet, second medium outlet and the 3rd media outlet flow in or out for medium, prevent from being situated between
Matter flows back, and realizes the multi-functional control of pipe-line system.
Further, first check valve also includes first sleeve and flat sleeve pipe, and the first sleeve is sheathed on described
The afterbody of first valve element, the flat sleeve pipe are sheathed in the first sleeve, and gap is provided between first valve body, just
In flow of media.
Further, second check valve also includes screw special and the second sleeve pipe, and second sleeve pipe is sheathed on institute
The afterbody of the second valve element is stated, the screw special is between the afterbody and second valve body of second valve element, for reality
Existing being fixedly connected between second check valve and the valve body.
Further, the head of first valve element and the second valve element uses wedge angle form, for realizing that medium is oriented to
And rectification.
Further, the sealing unit includes the first sealing ring, the second sealing ring and the 3rd sealing ring.
Further, the outside of first check valve and the second check valve is provided with multiple grooves, for laying described
One sealing ring, realize the sealing between first check valve, the second check valve and the valve body.
Further, the tip of first valve element is provided with groove, for laying second sealing ring, realizes described
Sealing between one valve element and the first valve body.
Further, the afterbody of second valve body is provided with groove, for laying the 3rd sealing ring, realizes described
Sealing between two valve bodies and the screw special.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it can obtain down and show
Beneficial effect：
(1) the integrated arrangement of combination check valve of the invention, the first check valve and the second check valve, and it is real by sealing unit
The sealing of existing first check valve, the second check valve and valve body, so as to form multiple medium gateways and circulation passage, realizes Jie
A variety of different mediums control that matter enters under combination check valve state from different inlet and outlet respectively, realize more work(of pipe-line system
It can control, and effectively prevent medium back flow, and then ensure pipe-line system normal operation.
(2) combination check valve of the invention, the annular that the cylindrical place of the first valve body of the first check valve is provided with flow of media are led to
Road, and be connected by circular hole with the first valve element, the circulation passage of the first check valve is formed, medium by passing through again after the first valve element
The sideshake on flat sleeve pipe both sides flows out from outlet.
(3) combination check valve of the invention, the annular that the cylindrical place of the second valve body of the second check valve is provided with flow of media are led to
Road, and being connected by circular hole with the second valve element, forms the circulation passage of the second check valve, medium by after the second valve element from outlet
Outflow.
(4) combination check valve of the invention, the first check valve and the second check valve are using metal to nonmetallic sealing
Mode, valve element use quality of rubber materials, and aluminum alloy material, sealing reliability height are used at valve seat.
(5) poppet head of combination check valve of the invention, the first check valve and the second check valve uses wedge angle form,
Guiding and rectified action are realized, so as to prevent medium back flow.
Brief description of the drawings
Fig. 1 is a kind of section of structure of combination check valve of the embodiment of the present invention；
Fig. 2 is a kind of the first one-way valve structures profile being related to of combination check valve of the embodiment of the present invention；
Fig. 3 is a kind of the second one-way valve structures profile being related to of combination check valve of the embodiment of the present invention；
Fig. 4 is a kind of three dimensional structure diagram of combination check valve of the embodiment of the present invention.
In all of the figs, same reference represents identical technical characteristic, is specially：The check valves of 1- first, 2-
Seal coil unit, the check valves of 3- second, 4- valve bodies；
The valve elements of 101- first, the valve bodies of 102- first, 103- first sleeves, the flat sleeve pipes of 104-, 105- springs；
The sealing rings of 201- first, the sealing rings of 202- second, the sealing rings of 203- the 3rd；
The valve bodies of 301- second, the valve elements of 302- second, 303- screw specials, the sleeve pipes of 304- second.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below that
Conflict can is not formed between this to be mutually combined.
Fig. 1 is a kind of section of structure of combination check valve of the embodiment of the present invention, as shown in figure 1, the combination check valve bag
Include the first check valve 1, the second check valve 3, valve body 4 and sealing unit 2.Wherein, the first check valve 1 and the second check valve 3 be simultaneously
Row are arranged in valve body 4, and spaced apart, so as to form media outlet B, be provided with the first check valve 1 media outlet A and
Circular passage F, media outlet C and circular passage G is provided with the second check valve 3.Set in first check valve 1 and the second check valve 3
There is sealing unit 2.The integrated arrangement of the combination check valve of the present invention, the first check valve and the second check valve, and pass through sealing unit
The sealing of the first check valve, the second check valve and valve body is realized, so as to form multiple medium gateways and circulation passage, is realized
A variety of different mediums control that medium enters under combination check valve state from different inlet and outlet respectively, realizes the more of pipe-line system
Function control, and medium back flow is effectively prevented, and then ensure pipe-line system normal operation.
Fig. 2 is a kind of the first one-way valve structures profile being related to of combination check valve of the embodiment of the present invention.Such as Fig. 2 institutes
Show, the first check valve 1 includes the first valve element 101, the first valve body 102, first sleeve 103, flat sleeve pipe 104 and spring 105.
Sealing unit 2 includes the first sealing ring 201 and the second sealing ring 202.The combination check valve of the present invention, first is unidirectional
Valve and the second check valve use metal, and to nonmetallic sealing means, valve element uses quality of rubber materials, and aluminium alloy is used at valve seat
Material, sealing reliability are high.
As shown in Fig. 2 the first valve element 101 is located at the inside of the first valve body 102, the head of the first valve element 101 uses wedge angle
Structure, and start on head fluted, the groove is used to lay the second sealing ring 202, so as to realize the first valve element 101 and first
Sealing between valve body 102.The afterbody of first valve element 101 is column structure, is arranged with spring 105 thereon, and the spring 105 is used
In compressing the first valve element 101, avoid medium from entering B from A outlets and export.The afterbody of first valve element 101 and the first valve body 102 it
Between be sequentially provided with first sleeve 103 and flat sleeve pipe 104, so as to realize the sealing of the first check valve and the second check valve, press from both sides simultaneously
The afterbody of tight first valve element 101.The outside of first valve body 102 is provided with multiple grooves, and the groove is used to lay the first sealing ring
201, so as to realize the sealing between the first check valve 1 and valve body 4.
The 102 cylindrical place of the first valve body of first check valve 1 is provided with the circular passage F of flow of media, and passes through circular hole and
One valve element 101 is connected, and forms the circulation passage of the first check valve 1, medium by passing through flat sleeve pipe 104 again after the first valve element 101
The sideshake on both sides flows out from B mouths.
Fig. 3 is a kind of the second one-way valve structures profile being related to of combination check valve of the embodiment of the present invention.Such as Fig. 3 institutes
Show, the second check valve 2 includes the second valve body 301, the first sealing ring 201, the second sealing ring 202, the 3rd sealing ring 203, second
Valve element 302, screw special 303, the second sleeve pipe 304 and spring 305.Second valve element 302 is in the second valve body 301, and this second
The head of valve element 302 uses horn structure, and starts on head fluted, and the groove is used to lay the second sealing ring 202, so as to real
Existing sealing between second valve element 302 and the second valve body 301.The afterbody of second valve element 302 is column structure, is arranged with thereon
Spring 105, the spring 105 are used to compress the second valve element 302, avoid medium from entering C from B outlets and export.Second valve element 3021
Afterbody and the second valve body 301 between be provided with screw special 303, so as to which that realizes between the second check valve 2 and valve body 4 fixed connects
Connect.The outside of second valve body 301 is provided with multiple grooves, and the groove is used to lay the first sealing ring 201, so as to realize that second is unidirectional
Sealing between valve 2 and valve body 4.
As shown in figure 3, the 301 cylindrical place of the second valve body of the second check valve 2 is provided with the circular passage G of flow of media, and lead to
Circular hole is crossed with the second valve element 302 to be connected, formed the second check valve 301 circulation passage, medium by after the second valve element 302 from C
Mouth outflow.
The poppet head of the combination check valve of the present invention, the first check valve and the second check valve uses wedge angle form, real
Now guiding and rectified action, so as to prevent medium back flow.
Fig. 4 is a kind of three dimensional structure diagram of combination check valve of the embodiment of the present invention.As shown in figure 4, combination check valve
Four screw holes are provided with valve body E, being fixedly connected for the first check valve 1 and the second check valve 2 are realized using screw, so as to be formed
The combination check valve.
As shown in figure 4, offering stepped hole at A mouths, B mouths, C mouths, ensure combination check valve for installing sealing unit 2
Sealing.
During work, when medium flows into combination check valve by B mouths, now pressure medium overcomes the second check valve 2 to be hit by a bullet
The second valve element 302 is opened on the pressure top of spring 105, and the second check valve 2 is opened, and medium flows out from C mouths, now in the first check valve 1
First valve element 101 is closed in the presence of pressure medium, and now the first check valve 1 is closed, and A mouths are without Jie
Mass flow goes out.
When medium flows into combination check valve by A mouths, now pressure medium overcomes spring 105 in the first check valve 1
The first valve element 101 is opened on pressure top, and the first check valve 1 is opened, and medium flows out from B mouths, while the second valve element in the second check valve 3
302 are in opening in the presence of pressure medium, and now the second check valve 3 is also at open mode, and medium is from C mouth streams
Go out.
When medium flows into combination check valve by C mouths, now the first check valve 1 and the second check valve 3 are in closing
State, A mouths and B mouths flow out without medium.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., all should be included
Within protection scope of the present invention.
Claims (8)
1. a kind of combination check valve, including valve body (4), it is characterised in that：
The first check valve (1), the second check valve (3) and sealing unit (2) are provided with the valve body (4) side by side, described first is single
First medium outlet is formed to valve (1) and the second check valve (3) are spaced apart, and is realized by the sealing unit (2)
With the sealing between the valve body (4)；
First check valve (1) includes the first valve body (102), the first valve element (101) and is sheathed on the first valve element (101) afterbody
Spring (105), the excircle of first valve body (102) offers second medium outlet and the circular passage of flow of media,
The circular passage is connected by circular hole with first valve element (101), and the spring (105) is used to compressing or unclamping described the
One valve element (101), realize the barrier or circulation of medium；
Second check valve (3) includes the second valve body (301), the second valve element (302) and is sheathed on the second valve element (302) afterbody
Spring (105), the excircle of second valve body (301) is located at the 3rd media outlet and the circular passage of flow of media, institute
State circular passage to connect with the second valve element (302) by circular hole, the spring (105) is used to compress or unclamp second valve element
(302) barrier or circulation of medium, are realized.
The first medium outlet, second medium outlet and the 3rd media outlet flow in or out for medium, prevent medium from returning
Stream, realize the multi-functional control of pipe-line system.
2. a kind of combination check valve according to claim 1, it is characterised in that first check valve (1) also includes the
Sleeve (103) and flat sleeve pipe (104), the first sleeve (103) is sheathed on the afterbody of first valve element (101), described
Flat sleeve pipe (104) is sheathed in the first sleeve (103), and is provided with gap between first valve body (102), is easy to be situated between
Mass flow is led to.
3. a kind of combination check valve according to claim 1, it is characterised in that second check valve (3) also includes special
With screw (303) and the second sleeve pipe (304), second sleeve pipe (304) is sheathed on the afterbody of second valve element (302), institute
Screw special (303) is stated between the afterbody and second valve body (301) of second valve element (302), for realizing
State being fixedly connected between the second check valve (2) and the valve body (4).
4. a kind of combination check valve according to Claims 2 or 3, it is characterised in that first valve element (101) and second
The head of valve element (302) uses wedge angle form, for realizing medium guiding and rectification.
5. a kind of combination check valve according to claim 1, it is characterised in that it is close that the sealing unit (2) includes first
Seal (201), the second sealing ring (202) and the 3rd sealing ring (203).
6. a kind of combination check valve according to claim 1 or 5, it is characterised in that first check valve (1) and second
The outside of check valve (2) is provided with multiple grooves, for laying first sealing ring (201), realizes first check valve
(1), the sealing between the second check valve (2) and the valve body (4).
A kind of 7. combination check valve according to claim 1 or 5, it is characterised in that the tip of first valve element (101)
Provided with groove, for laying second sealing ring (202), realize between first valve element (101) and the first valve body (102)
Sealing.
8. according to a kind of combination check valve described in claim 1,3 or 5, it is characterised in that the tail of second valve body (301)
Portion is provided with groove, for laying the 3rd sealing ring (203), realizes second valve body (301) and the screw special
(303) sealing between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711047196.XA CN107676507A (en) | 2017-10-31 | 2017-10-31 | A kind of combination check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711047196.XA CN107676507A (en) | 2017-10-31 | 2017-10-31 | A kind of combination check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107676507A true CN107676507A (en) | 2018-02-09 |
Family
ID=61143720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711047196.XA Pending CN107676507A (en) | 2017-10-31 | 2017-10-31 | A kind of combination check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107676507A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135532A (en) * | 2021-10-11 | 2022-03-04 | 烟台艾迪精密机械股份有限公司 | A parallel integrated multi-stage check valve |
| CN114165404A (en) * | 2021-11-15 | 2022-03-11 | 贵州鑫瑞达科技有限公司 | An ultra-high pressure water pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU5881169A (en) * | 1969-07-30 | 1971-02-04 | Joseph Lucas (Industries) Limited | Non-return valves |
| US4364411A (en) * | 1980-07-21 | 1982-12-21 | Payton Kenneth J | Liquid line thermal barrier |
| CN201475435U (en) * | 2009-04-10 | 2010-05-19 | 竺浩君 | Double linked one-way valve group |
| CN102011879A (en) * | 2010-11-18 | 2011-04-13 | 凯迈（洛阳）气源有限公司 | Oxygen valve |
| CN202012642U (en) * | 2011-05-10 | 2011-10-19 | 杭州春江阀门有限公司 | Novel backflow preventer |
| CN205298651U (en) * | 2015-12-28 | 2016-06-08 | 重庆耐德节能装备有限公司 | Pressure fluid self -commutation device |
-
2017
- 2017-10-31 CN CN201711047196.XA patent/CN107676507A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU5881169A (en) * | 1969-07-30 | 1971-02-04 | Joseph Lucas (Industries) Limited | Non-return valves |
| US4364411A (en) * | 1980-07-21 | 1982-12-21 | Payton Kenneth J | Liquid line thermal barrier |
| CN201475435U (en) * | 2009-04-10 | 2010-05-19 | 竺浩君 | Double linked one-way valve group |
| CN102011879A (en) * | 2010-11-18 | 2011-04-13 | 凯迈（洛阳）气源有限公司 | Oxygen valve |
| CN202012642U (en) * | 2011-05-10 | 2011-10-19 | 杭州春江阀门有限公司 | Novel backflow preventer |
| CN205298651U (en) * | 2015-12-28 | 2016-06-08 | 重庆耐德节能装备有限公司 | Pressure fluid self -commutation device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135532A (en) * | 2021-10-11 | 2022-03-04 | 烟台艾迪精密机械股份有限公司 | A parallel integrated multi-stage check valve |
| CN114165404A (en) * | 2021-11-15 | 2022-03-11 | 贵州鑫瑞达科技有限公司 | An ultra-high pressure water pump |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180209 |