DK140963B - Elektrisk wolfram-halogen-lampe med en beskyttende belægning på de indre flader og fremgangsmåde til fremstilling af belægningen. - Google Patents

Elektrisk wolfram-halogen-lampe med en beskyttende belægning på de indre flader og fremgangsmåde til fremstilling af belægningen.

Info

Publication number: DK140963B
Authority: DK; Denmark
Prior art keywords: coating; manufacturing; inner surfaces; halogen lamp; tungsten halogen
Prior art date: 1973-01-19

Application number

DK24674AA

Other languages

Danish (da)

English (en)

Other versions

DK140963C (de

Inventor

David Robert Mason

Susan Magaret Cole

John Michael Rees

James Richard Coaton

Original Assignee

Thorn Lighting Ltd

Priority date (The priority date 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 date listed.)

1973-01-19

Filing date

1974-01-17

Publication date

1979-12-10

1974-01-17 Application filed by Thorn Lighting Ltd filed Critical Thorn Lighting Ltd

1979-12-10 Publication of DK140963B publication Critical patent/DK140963B/da

1980-05-27 Application granted granted Critical

1980-05-27 Publication of DK140963C publication Critical patent/DK140963C/da

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels
- H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof

Landscapes

Engineering & Computer Science (AREA)
Manufacturing & Machinery (AREA)
Pigments, Carbon Blacks, Or Wood Stains (AREA)
Paper (AREA)
Vessels And Coating Films For Discharge Lamps (AREA)
Chemically Coating (AREA)
Chemical Treatment Of Metals (AREA)

DK24674AA 1973-01-19 1974-01-17 Elektrisk wolfram-halogen-lampe med en beskyttende belægning på de indre flader og fremgangsmåde til fremstilling af belægningen. DK140963B (da)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB295273A GB1456242A (en)	1973-01-19	1973-01-19	Incandescent lamp

Publications (2)

Publication Number	Publication Date
DK140963B true DK140963B (da)	1979-12-10
DK140963C DK140963C (de)	1980-05-27

Family

ID=9749149

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DK24674AA DK140963B (da)	1973-01-19	1974-01-17	Elektrisk wolfram-halogen-lampe med en beskyttende belægning på de indre flader og fremgangsmåde til fremstilling af belægningen.

Country Status (14)

Country	Link
US (1)	US3902091A (de)
JP (1)	JPS5818744B2 (de)
BE (1)	BE809912A (de)
CA (1)	CA986980A (de)
DE (1)	DE2402136C3 (de)
DK (1)	DK140963B (de)
FR (1)	FR2214969B1 (de)
GB (1)	GB1456242A (de)
IE (1)	IE38743B1 (de)
IT (1)	IT1003464B (de)
LU (1)	LU69186A1 (de)
NL (1)	NL177538C (de)
SE (1)	SE391836B (de)
ZA (1)	ZA74275B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3982046A (en) *	1973-01-19	1976-09-21	Thorn Lighting Limited	Incandescent lamps
US4256988A (en) *	1977-01-17	1981-03-17	Thorn Lighting Limited	Incandescent halogen lamp with protective envelope coating
US4185922A (en) *	1977-01-17	1980-01-29	Thorn Electrical Industries Limited	Method of introducing fluorine into a lamp
US4288713A (en) *	1979-11-23	1981-09-08	Gte Products Corporation	Lamp having opaque coating
US5473226A (en) *	1993-11-16	1995-12-05	Osram Sylvania Inc.	Incandescent lamp having hardglass envelope with internal barrier layer
DE4410968A1 (de) *	1994-03-29	1995-10-05	Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh	Quecksilberhochdrucklampe

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL37602C (de) *	1931-12-18	1936-03-16
US2393469A (en) *	1942-08-03	1946-01-22	Corning Glass Works	Fluorescent glass and lamp made therefrom

1973
- 1973-01-19 GB GB295273A patent/GB1456242A/en not_active Expired
1974
- 1974-01-14 IE IE78/74A patent/IE38743B1/xx unknown
- 1974-01-15 CA CA190,139A patent/CA986980A/en not_active Expired
- 1974-01-15 ZA ZA00740275A patent/ZA74275B/xx unknown
- 1974-01-17 DE DE2402136A patent/DE2402136C3/de not_active Expired
- 1974-01-17 LU LU69186A patent/LU69186A1/xx unknown
- 1974-01-17 SE SE7400620A patent/SE391836B/xx unknown
- 1974-01-17 DK DK24674AA patent/DK140963B/da not_active Application Discontinuation
- 1974-01-18 US US434381A patent/US3902091A/en not_active Expired - Lifetime
- 1974-01-18 BE BE139957A patent/BE809912A/xx unknown
- 1974-01-19 JP JP49008913A patent/JPS5818744B2/ja not_active Expired
- 1974-01-21 IT IT19617/74A patent/IT1003464B/it active
- 1974-01-21 FR FR7401912A patent/FR2214969B1/fr not_active Expired
- 1974-01-21 NL NLAANVRAGE7400812,A patent/NL177538C/xx not_active IP Right Cessation

Also Published As

Publication number	Publication date
JPS5818744B2 (ja)	1983-04-14
SE391836B (sv)	1977-02-28
DE2402136A1 (de)	1974-07-25
NL177538C (nl)	1985-10-01
DK140963C (de)	1980-05-27
FR2214969A1 (de)	1974-08-19
IT1003464B (it)	1976-06-10
GB1456242A (en)	1976-11-24
DE2402136C3 (de)	1978-12-07
JPS49104482A (de)	1974-10-03
BE809912A (fr)	1974-05-16
AU6468174A (en)	1975-07-24
IE38743B1 (en)	1978-03-29
IE38743L (en)	1974-07-19
ZA74275B (en)	1975-05-28
US3902091A (en)	1975-08-26
DE2402136B2 (de)	1978-04-13
NL177538B (nl)	1985-05-01
FR2214969B1 (de)	1977-06-10
NL7400812A (de)	1974-07-23
LU69186A1 (de)	1974-04-08
CA986980A (en)	1976-04-06

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Legal Events

Date	Code	Title	Description
1987-02-16	AHB	Application shelved due to non-payment