[go: up one dir, main page]

EP1409939B1 - Procede de fabrication d'une structure de base thermostable et four comprenant une structure de base thermostable - Google Patents

Procede de fabrication d'une structure de base thermostable et four comprenant une structure de base thermostable Download PDF

Info

Publication number
EP1409939B1
EP1409939B1 EP02738978A EP02738978A EP1409939B1 EP 1409939 B1 EP1409939 B1 EP 1409939B1 EP 02738978 A EP02738978 A EP 02738978A EP 02738978 A EP02738978 A EP 02738978A EP 1409939 B1 EP1409939 B1 EP 1409939B1
Authority
EP
European Patent Office
Prior art keywords
base structure
bricks
furnace
accordance
locking elements
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.)
Expired - Lifetime
Application number
EP02738978A
Other languages
German (de)
English (en)
Other versions
EP1409939A1 (fr
Inventor
Anders Ruud
Inge Holden
Arne Werge-Olsen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Norsk Hydro ASA
Original Assignee
Norsk Hydro ASA
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.)
Filing date
Publication date
Application filed by Norsk Hydro ASA filed Critical Norsk Hydro ASA
Publication of EP1409939A1 publication Critical patent/EP1409939A1/fr
Application granted granted Critical
Publication of EP1409939B1 publication Critical patent/EP1409939B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B13/00—Furnaces with both stationary charge and progression of heating, e.g. of ring type or of the type in which a segmental kiln moves over a stationary charge
    • F27B13/02—Furnaces with both stationary charge and progression of heating, e.g. of ring type or of the type in which a segmental kiln moves over a stationary charge of multiple-chamber type with permanent partitions; Combinations of furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/16—Making or repairing linings ; Increasing the durability of linings; Breaking away linings

Definitions

  • the present invention concerns a method for creating a thermally stable base structure which may form part of furnaces such as ring section furnaces for calcining of carbon blocks for use in aluminium electrolysis. Moreover, the present invention comprises a furnace in which the base structure has proved to remain stable over long-term operation with high mechanical and thermal loads.
  • Carbon blocks such as those stated above might have a considerable weight of several tonnes and a length of 1.5 metres or more, depending on whether they are to be used as anode or cathode elements in the electrolysis cells (see e.g. DE-U1-2002167).
  • US-A-5 676 540 discloses an interlocking brick system for flue walls of a furnace.
  • the carbon blocks are loaded into the furnace in deep shafts called cassettes or pits with walls constructed of refractory brick work.
  • the gap between the carbon blocks and the cassette walls is filled with packing material, for example coke, to provide good support (stabilising of) for the carbon blocks.
  • the packing coke serves also to protect the carbon blocks against air bum.
  • cassettes are built next to each other and form a section.
  • the walls between the cassettes are provided with ducts for firing gases and heat is supplied to the carbon blocks by conducting firing gases through these ducts.
  • the firing gases from a section are conducted to an adjacent section in the direction of firing via passages arranged in or under head walls located between the sections. In this way, the firing gases may be drawn through several sections connected in series in the preheating, firing and cooling zones.
  • Furnaces of this type may comprise horizontal firing gas ducts in the space below the base of the cassettes while there is free gas conduction in the space between the section cover and the cassettes.
  • the firing gas ducts in the cassette walls connect the space below the section cover with the spaces below the base of the cassettes.
  • a section may be divided into two parts by a barrier wall in the space below the cassettes.
  • the firing gases are then conducted up through one half and down through the other half in the ducts of the cassette walls in the direction of firing.
  • the first phase of the heat supply to a section takes place in the preheating zone, where the carbon blocks reach up to approximately 600°C by means of the heat in the firing gases from the last part of the firing zone. Later, in the temperature interval from 600°C to the desired operating temperature of 1200-1300°C, heat must be supplied by the stated combustion of gas, oil and binding material.
  • the fuel can either be supplied in separate vertical firing shafts in the head walls or fully or partially in the space above and/or below the cassettes, as shown in the applicant's own patent nos. 152029 and 174364.
  • the base structure of the cassettes When the carbon blocks are inserted, the base will be loaded with several tonnes. Moreover, during the calcining process, the temperature may exceed 1500°C in parts of the structure. In addition to having to have high mechanical strength, it is important for the base structure to constitute an effective sealing surface against firing gas ducts installed below the base so that uncontrolled bum in the cassette above does not occur. Another feature of the base structure is that gas ducts from the cassette walls which communicate with the space below the base structure pass through it. These ducts should be in sealing contact with the base so that firing gas does not leak into the cassettes.
  • One purpose of the present invention is for the above properties to be provided even with large thermal cycles, and the base is constructed in such a way that it can withstand high mechanical and thermal loads.
  • Figure 1 shows a cross section of a section in a furnace.
  • the section 1 comprises an outer case 2, which is lined with brick work at the sides 3, 5 and at the base of the furnace 4.
  • the figure also shows cassette walls 6, 7, 8, 9, 10, 11, 12, 13, 14, which are equipped with firing gas ducts.
  • a number of columns 15, 16, 17 rest on the base 4. They support part 18 of the base structure. Accordingly, the columns 19, 20, 21 support part 22 of the base structure.
  • Three layers of carbon blocks K are shown inserted in the cassette between cassette walls 10 and 11.
  • Figure 2 shows plan view of a section in a furnace, seen from above. As the figure shows, the cassette walls 6, 7, 8, 9, 10, 11, 12, 13, 14 are fixed to head walls 30, 31 at their ends. Moreover, carbon blocks K are shown inserted in the cassette between cassette walls 9 and 10.
  • Figure 3a shows an enlarged cross section of a part of a section as shown in Figure 1, where an outer case 2 is lined with brick work 5 at its side and with brick work 4 at its base. Moreover, the figure shows three columns 15, 16, 17, which support a part 18 of the base structure, and columns 19, 20, 21, which support part 22 of the base structure.
  • the opening 23 between the base parts 18, 22 communicates with the firing gas duct(s) 24 which run(s) from the bottom to the top in the cassette wall 7.
  • the other cassette walls are arranged accordingly.
  • the cassette walls may expediently consist of wall structures as shown in the applicant's own Norwegian patent application no. NO 20012044, and rest against recesses 27, 28 arranged in the base parts 18, 22.
  • the opening 23 shown may run as a continuous gap along the full length of the section.
  • the base parts 18 and 22 are built up of two layers B', C' of refractory bricks of a relatively large area in relation to their thickness.
  • the bricks' adjacent surfaces are expediently made with locking elements 25, 26 which contribute to the bricks in the two layers locking together.
  • the locking elements may consist of interacting elevations/recesses which are adapted to each other and fit together.
  • the locking elements may consist of longitudinal and transverse beads/cutouts or they may consist of rotationally symmetrical elevations/recesses equivalent to that stated in the applicant's own patent application no. PCT/NO99/00370.
  • Figure 3b shows further details in connection with the construction of a base structure equivalent to the one shown in Figure 3a, in which four columns 15, 16, 17, 18 are shown.
  • a construction of a base structure with two layers C', B' of refractory bricks comprises bricks with locking elements 25, 26.
  • the figure also shows expansion joints 60, 61 which may be arranged between the bricks.
  • the refractory brick 62 is not equipped with locking elements against the underlying bricks 64, 65 so that the layers C', B' may have the necessary mobility in relation to the expansion joints.
  • the figure shows the shape of an end brick 63, which is designed as the termination of the two layers against an adjacent brick in a firing gas duct in a cassette wall (not shown). Accordingly, end bricks 66, 67 are shown. They interact with a brick 24' which constitutes part of a firing gas duct in a cassette wall.
  • Figure 4 shows an enlarged plan view of a part of a section as shown in Figure 2, seen from above, in which the section is taken below the base of the cassettes.
  • head walls 30, 31 are shown. They limit the length of the section.
  • a number of columns are shown. For the sake of simplicity, only columns 15, 16, 17, 19, 20, 21 and columns 33, 34, 35, 36, 37 are indicated with reference numbers.
  • the space below the base structure of the cassettes is closed in terms of gas flow by means of a tight barrier wall 32 at the centre of the section, which causes the firing gases to be forced up through the cassette walls in the first half of the section and down again in the next half.
  • Figure 5 shows a longitudinal section of a section as shown in Figure 4.
  • the figure also shows a base structure 38 which rests on the columns.
  • the figure shows columns 15, 33, 34, 35, 36, 37, which rest on the base of the furnace 4.
  • the figure shows the partition wall 32 and the base structure 38.
  • the base structure is fixed to adjacent head walls (not shown) with an expansion/contraction joint.
  • Figure 6 shows details in connection with the construction of a base structure where only a section of the base is shown, seen from above.
  • the figure shows the barrier wall 32 and (only partially) columns 15, 17, 33, 34, 35, 36, 37 and 16.
  • the figure is intended to illustrate the construction of the base structure, and rows A, B, C show the various stages of this construction.
  • row A the installation of a layer of edge bricks 50, 50' is shown.
  • the place where a gap 23 is formed between edge bricks 50' and 50" forms the base of the cassette walls (see Figure 3).
  • row B a row of bricks 51 is shown laid between the rows of edge bricks 50" and 50"'.
  • the area of the bricks is indicated by black lines which together form a rectangular shape.
  • each brick may have a network of locking elements, and in the centre part of the row this may comprise longitudinal and transverse beads/grooves 52, 53.
  • row C the second, concluding layer is laid.
  • the individual bricks are shown by continuous black lines in rectangular shapes. Underneath this layer are interacting locking elements which lock with complementary elements in the layer shown in row B. Moreover, the bricks are designed so that none of the end edges coincides with end edges of bricks in the layer underneath.
  • a stable base structure may be created in which, in principle, every single brick is locked permanently to one or more adjacent bricks with the exception of the creation of any expansion joints, where adjacent bricks must be able to move in the appropriate manner as described under Figure 3b.
  • the size of the bricks is adapted to the bearing surface constituted by the top surface of the columns and the joints between the bricks are laid in such a way that the strength properties of the floor are optimised.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Central Heating Systems (AREA)

Claims (10)

  1. Procédé pour la production d'une structure de base thermostable (38) qui convient comme partie de fours, tels que des fours annulaires, pour calciner des blocs de carbone destinés à un usage en électrolyse d'aluminium, où la structure de base comprend des couches de briques réfractaires et repose sur une fondation constituée d'un certain nombre de colonnes (15, 16, 17, 18, 19, 20),
    caractérisé en ce que
       on forme une première couche B' de briques réfractaires qui repose sur la fondation et dont les briques sont fabriquées avec des éléments de verrouillage (25, 26) sur leurs parties supérieures, sur laquelle couche est appliquée une deuxième couche C' de briques réfractaires avec des éléments de verrouillage complémentaires équivalents ménagés en dessous de celles-ci afin que les deux couches restent au moins en partie raccordées l'une à l'autre.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
       les éléments de verrouillage sont conçus sous la forme de nervures/rainures longitudinales et transversales (52, 53) aménagées dans les surfaces adjacentes des briques.
  3. Procédé selon la revendication 1,
    caractérisé en ce que
       la structure de base (38) est formée de plusieurs parties (18, 22) qui sont aménagées de sorte qu'un intervalle (23) soit ménagé entre elles, l'intervalle étant conçu pour permettre une communication avec des conduits de gaz de combustion (24) dans une paroi de cassette (7) et l'espace situé en dessous de la structure de base (38).
  4. Procédé selon les revendications 1 à 3,
    caractérisé en ce que
       une dilatation/contraction de la structure de base dans la direction longitudinale de la section est autorisée aux extrémités (39, 40) de la structure de base, où elle est fixée aux parois de tête adjacentes (30, 31).
  5. Procédé selon les revendications 1 à 3,
    caractérisé en ce que
       une dilatation/contraction de la structure de base dans la direction transversale de la section est autorisée par des joints de dilatation (60, 61) aménagés entre les briques des couches B', C' de la structure de base.
  6. Four tel qu'un four annulaire pour calciner des blocs de carbone destinés à un usage en électrolyse d'aluminium, comprenant une structure de base thermostable (38), où la structure de base repose sur une fondation constituée d'un certain nombre de colonnes (15, 16, 17, 18, 19, 20),
    caractérisé en ce que
       la structure de base est formée d'au moins deux couches B', C' de briques réfractaires qui sont équipées d'éléments de verrouillage (25, 26) sur leurs côtés adjacents de sorte que les briques soient au moins en partie raccordées l'une à l'autre.
  7. Four selon la revendication 6,
    caractérisé en ce que
       les éléments de verrouillage sont constitués de nervures/rainures longitudinales et transversales (52, 53) aménagées dans les surfaces adjacentes des briques.
  8. Four selon la revendication 6,
    caractérisé en ce que
       les éléments de verrouillage sont constitués de saillies/rainures à symétrie de rotation.
  9. Four selon la revendication 6,
    caractérisé en ce que
       la structure de base (38) comprend plusieurs parties (18, 22) qui sont aménagées de sorte qu'un intervalle (23) soit formé entre elles et que l'intervalle forme la liaison entre l'espace situé en dessous de la structure de base et les conduits de gaz de combustion (24) dans une paroi de cassette (7).
  10. Four selon la revendication 6,
    caractérisé en ce que
       la structure de base comprend des joints de dilatation (60, 61) entre les briques adjacentes.
EP02738978A 2001-06-06 2002-06-05 Procede de fabrication d'une structure de base thermostable et four comprenant une structure de base thermostable Expired - Lifetime EP1409939B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO20012789 2001-06-06
NO20012789A NO314913B1 (no) 2001-06-06 2001-06-06 Fremgangsmåte for tildannelse av en termisk stabil bunnkonstruksjon samt anordning ved samme
PCT/NO2002/000199 WO2002099351A1 (fr) 2001-06-06 2002-06-05 Procede et dispositif de fabrication d'une structure de base thermostable

Publications (2)

Publication Number Publication Date
EP1409939A1 EP1409939A1 (fr) 2004-04-21
EP1409939B1 true EP1409939B1 (fr) 2004-12-01

Family

ID=19912535

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02738978A Expired - Lifetime EP1409939B1 (fr) 2001-06-06 2002-06-05 Procede de fabrication d'une structure de base thermostable et four comprenant une structure de base thermostable

Country Status (6)

Country Link
EP (1) EP1409939B1 (fr)
AT (1) ATE284012T1 (fr)
CA (1) CA2449699C (fr)
DE (1) DE60202150T2 (fr)
NO (1) NO314913B1 (fr)
WO (1) WO2002099351A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2643764C2 (de) * 1976-09-29 1985-11-28 Sigri GmbH, 8901 Meitingen Kammerringofen
US5676540A (en) * 1996-03-19 1997-10-14 Aluminum Company Of America Flue walls using interlocking bricks
US6017214A (en) * 1998-10-05 2000-01-25 Pennsylvania Coke Technology, Inc. Interlocking floor brick for non-recovery coke oven
DE20002167U1 (de) * 2000-02-08 2000-04-13 Jünger & Gräter GmbH Feuerfestbau, 68723 Schwetzingen Ofenboden

Also Published As

Publication number Publication date
DE60202150T2 (de) 2005-12-01
NO20012789D0 (no) 2001-06-06
DE60202150D1 (de) 2005-01-05
NO314913B1 (no) 2003-06-10
EP1409939A1 (fr) 2004-04-21
CA2449699A1 (fr) 2002-12-12
ATE284012T1 (de) 2004-12-15
NO20012789L (no) 2002-12-09
CA2449699C (fr) 2010-08-10
WO2002099351A1 (fr) 2002-12-12

Similar Documents

Publication Publication Date Title
KR102441123B1 (ko) 모놀리스 요소 구성을 갖는 코크스로
BR112016030880B1 (pt) câmara de forno de coque de recuperação de calor horizontal
EP0954723B1 (fr) Parois constituees d'un agencement de briques cannelees
US3260228A (en) Ceiling constructions for furnaces
CA2789603C (fr) Dome de regenerateur de haut-fourneau et regenerateur de haut-fourneau
WO1997005215A1 (fr) Four a coke
US8684727B2 (en) Ring furnace including baking pits with a large horizontal aspect ratio and method of baking carbonaceous articles therein
US4405565A (en) Tubular reaction furnace for indirect heating of crackable fluids
EP1409939B1 (fr) Procede de fabrication d'une structure de base thermostable et four comprenant une structure de base thermostable
JPH0792341B2 (ja) カセツト炉用のカセツト壁
SU735178A3 (ru) Регенеративный нагреватель
US4842511A (en) Carbon baking furnace--refractory construction
US3134584A (en) Checkerbrick for industrial heating furnaces
US3690627A (en) Regenerative air heater such as hot blast stove
KR900008337B1 (ko) 코우크스 오븐 배터리
US3220713A (en) Refractory heat exchanger
EP0137430B1 (fr) Brique d'empilage pour cowper vertical et empilage de cowper de ces briques
JP2614582B2 (ja) コークス炉熱間補修時の非補修部の温度管理方法
SU1723095A1 (ru) Батаре горизонтальных коксовых печей
CA2448675C (fr) Procede et dispositif d'utilisation de fours a feu mobile
CA2228395C (fr) Four a coke
RU2061017C1 (ru) Коксовая печь
EP1992896A1 (fr) Four à feu mobile à parois de conduit de fumée dotées de joints de dilatation intégrés
JPH04272114A (ja) 外燃式熱風炉の構造
JP2006329449A (ja) 炭素質焼成品の焼成炉及び焼成方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20040107

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RTI1 Title (correction)

Free format text: A METHOD FOR CREATING A THERMALLY STABLE BASE STRUCTURE AND FURNACE COMPRISING A THERMALLY STABLE STRUCTURE

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20041201

Ref country code: LI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041201

Ref country code: CH

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041201

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041201

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041201

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041201

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041201

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041201

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041201

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041201

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 60202150

Country of ref document: DE

Date of ref document: 20050105

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050301

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050301

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050301

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050605

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050605

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050607

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050630

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20050902

EN Fr: translation not filed
REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060605

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20060605

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050501

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 60202150

Country of ref document: DE

Representative=s name: DR. RALF KOTITSCHKE, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 60202150

Country of ref document: DE

Representative=s name: KOTITSCHKE & HEURUNG PARTNERSCHAFT MBB PATENT-, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 60202150

Country of ref document: DE

Representative=s name: KOTITSCHKE & HEURUNG PARTNERSCHAFT MBB, DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20200618

Year of fee payment: 19

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60202150

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220101