EP0679199A1 - Al-si-mg-legierung mit verbesserter dehnbarkeit und tiefzieheigenschaften und verfahren zu deren herstellung - Google Patents

Al-si-mg-legierung mit verbesserter dehnbarkeit und tiefzieheigenschaften und verfahren zu deren herstellung

Info

Publication number
EP0679199A1
EP0679199A1 EP95901489A EP95901489A EP0679199A1 EP 0679199 A1 EP0679199 A1 EP 0679199A1 EP 95901489 A EP95901489 A EP 95901489A EP 95901489 A EP95901489 A EP 95901489A EP 0679199 A1 EP0679199 A1 EP 0679199A1
Authority
EP
European Patent Office
Prior art keywords
quenching
temperature
alloy
hot rolling
alloy according
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.)
Granted
Application number
EP95901489A
Other languages
English (en)
French (fr)
Other versions
EP0679199B1 (de
Inventor
Jean-Christophe Ehrstrom
Daniel Ferton
Christophe Sigli
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.)
Constellium Issoire SAS
Original Assignee
Pechiney Rhenalu SAS
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26230749&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0679199(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from FR9313966A external-priority patent/FR2712605B1/fr
Application filed by Pechiney Rhenalu SAS filed Critical Pechiney Rhenalu SAS
Publication of EP0679199A1 publication Critical patent/EP0679199A1/de
Application granted granted Critical
Publication of EP0679199B1 publication Critical patent/EP0679199B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
    • C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/05—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions

Definitions

  • the invention relates to aluminum alloys of the Al-Si-Mg type with improved ductility and stampability, used in the form of sheets or strips, as well as a process for obtaining these.
  • the sheets or bands are particularly intended for stamping and in particular for the automobile body.
  • the conventional alloys used in this field such as alloys 6009, 6016, 6111, according to the designation of the Aluminum Association still exhibit insufficient mechanical characteristics of use and formability.
  • the alloy according to the invention contains (by weight%): from 0.1 to 0.8 Mn from 0.25 to 0.8 Mg from 0.5 to 1.3 Si up to 0.9 Cu up to at 0.5 Fe up to 0.5 (each) and 0.15 (total) of other elements remains: Al.
  • a preferred composition is as follows: from 0.15 to 0.65 Mn from 0.3 to 0.6 Mg from 0.7 to 1.2 Si from 0.1 to 0.5 Cu up to 0.4 Fe remains Al + unavoidable impurities.
  • the preferred composition is as follows: from 0.25 to 0.45 Mn from 0.3 to 0.5 Mg from 0.85 to 1.10 Si from 0.1 to 0.3 Cu to 0.3 Fe rest: A1 + unavoidable impurities.
  • Mn is favorable to mechanical strength and to deformability; this action is sensitive beyond 0.1%; however, above 0.8% Mn, coarse compounds (Al, Mn, Fe) are formed which impair formability.
  • the Applicant has also found that high contents of Mn lead to homogenization of the microscopic deformation, which is favorable to a good distribution of the deformations.
  • the mechanical characteristics are too low; if Si> 1.3%, coarse primary compounds appear and impair formability.
  • the manufacturing process usually used includes the following operations:
  • the process according to the invention comprising the casting operations reheating, hot rolling and possibly cold rolling, soluti and quenching, maturation and possibly “baking” surface coating thereof, is characterized in that the temperature reheating before hot rolling and the inlet temperature to the hot laminate is between 460 and 520 ° C.
  • the temperature holding time e is between 30 min and 24 h.
  • the temperature at the end of hot rolling is preferably less than 400 ° C. and even 350 ° C.
  • the dissolution is preferably carried out between 520 and 570 ° C and in particular, between 550 and 570 ° C, for 5 min to 1 h.
  • the average quenching speed is preferably greater than 100 ° C / sec.
  • a pass-through oven can be used Typically the alloy matures at room temperature and reaches a stationary hardness in about 15 days, a state in which it is capable of undergoing shaping.
  • the alloy can undergo a hardening by tempering during the baking treatment of the coating (around 180 ° C. for 30 min). It has however been noted that in the case of an alloy homogenized in a conventional manner, the practice of a pre-annealing between 70 and 150 ° C for 0.5 to 5 h after quenching leads to a significant increase in the coefficient d 'hardening n (after maturation) and a significant increase in the mechanical strength characteristics (after curing of the coatings).
  • FIG. 1 represents the changes in the work hardening coefficient n in the ripened state as a function of the elastic limit in the hardened state with and without pre-tempering, under the conditions reported in Example 2.
  • the dissolution in a passing oven was carried out under the conditions given in Table II, mist cooling and then the sheets were aged for 15 days at room temperature before testing.
  • the Mn precipitates have a median size at 0.06 nm with a maximum dimension of 0.18 ⁇ m.
  • the tensile tests were carried out 14 days after quenching and certain samples were checked after an income of 30 min at

Landscapes

  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Metal Rolling (AREA)
  • Heat Treatment Of Steel (AREA)
EP95901489A 1993-11-17 1994-11-15 Al-si-mg-legierung mit verbesserter dehnbarkeit und tiefzieheigenschaften und verfahren zu deren herstellung Revoked EP0679199B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR9313966 1993-11-17
FR9313966A FR2712605B1 (fr) 1993-11-17 1993-11-17 Procédé d'obtention d'alliages type Al-Si-Mg à ductilité et emboutissabilité améliorées et produit ainsi obtenu.
FR9401603 1994-02-08
FR9401603A FR2713664B1 (fr) 1993-11-17 1994-02-08 Alliage type Al-Si-Mg à ductilité et emboutissabilité améliorées et procédé d'obtention.
PCT/FR1994/001330 WO1995014113A1 (fr) 1993-11-17 1994-11-15 Alliage de type aluminium-silicon-magnesium a ductilite et emboutissabilite ameliorees et procede d'obtention

Publications (2)

Publication Number Publication Date
EP0679199A1 true EP0679199A1 (de) 1995-11-02
EP0679199B1 EP0679199B1 (de) 1999-06-02

Family

ID=26230749

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95901489A Revoked EP0679199B1 (de) 1993-11-17 1994-11-15 Al-si-mg-legierung mit verbesserter dehnbarkeit und tiefzieheigenschaften und verfahren zu deren herstellung

Country Status (8)

Country Link
EP (1) EP0679199B1 (de)
JP (1) JPH08505904A (de)
KR (1) KR960700353A (de)
BR (1) BR9406554A (de)
CA (1) CA2152402C (de)
DE (1) DE69418855T2 (de)
FR (1) FR2713664B1 (de)
WO (1) WO1995014113A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006037588A1 (en) * 2004-10-05 2006-04-13 Aleris Aluminum Koblenz Gmbh Method of heat treating an aluminium alloy member and apparatus therefor
US7491278B2 (en) 2004-10-05 2009-02-17 Aleris Aluminum Koblenz Gmbh Method of heat treating an aluminium alloy member and apparatus therefor
WO2018185425A1 (fr) * 2017-04-06 2018-10-11 Constellium Neuf-Brisach Procede ameliore de fabrication de composant de structure de caisse automobile
WO2018206696A1 (en) * 2017-05-11 2018-11-15 Aleris Aluminum Duffel Bvba Method of manufacturing an al-si-mg alloy rolled sheet product with excellent formability

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH688379A5 (de) * 1994-11-29 1997-08-29 Alusuisse Lonza Services Ag Tiefziehbare und schweissbare Aluminiumlegierung vom Typ AlMgSi
EP0851942B2 (de) * 1995-09-19 2005-08-24 Alcan International Limited Verwendung von gewalzte aluminiumlegierungen für konstruktionsteile von fahrzeuge
FR2742165B1 (fr) * 1995-12-12 1998-01-30 Pechiney Rhenalu Procede de fabrication de bandes minces en alliage d'aluminium a haute resistance et formabilite
FR2748035B1 (fr) * 1996-04-29 1998-07-03 Pechiney Rhenalu Alliage aluminium-silicium-magnesium pour carrosserie automobile
JP2001503473A (ja) * 1996-06-14 2001-03-13 アルミナム カンパニー オブ アメリカ 成形性の高いアルミニウム合金製圧延シート
EP0931170A1 (de) * 1996-09-30 1999-07-28 Alcan International Limited Aluminiumlegierung zum walzen
JP3266099B2 (ja) 1998-03-27 2002-03-18 株式会社神戸製鋼所 アルミニウム合金製ドアビーム
WO2003010348A2 (en) 2001-07-23 2003-02-06 Corus Aluminium Walzprodukte Gmbh Weldable high strength al-mg-si alloy
PT1316623E (pt) * 2001-11-28 2007-12-12 Hydro Aluminium Deutschland Processo para produzir produtos em rolo em liga de alumínio
DE10324452B4 (de) * 2002-07-01 2010-05-06 Aleris Aluminum Duffel Bvba AI-Mg-Si-Legierungsblech
SE0203009D0 (sv) * 2002-10-14 2002-10-14 Sapa Heat Transfer Ab High strenth aluminium fin material for brazing
DE112011103667T5 (de) 2010-11-05 2013-08-01 Aleris Aluminum Duffel Bvba Automobil-Formteil aus einem Aluminiumlegierungsprodukt und Verfahren zu seiner Herstellung
MX2021010903A (es) 2019-03-13 2021-10-01 Novelis Inc Aleaciones de aluminio endurecibles por envejecimiento y altamente formables y metodos para hacer las mismas.
CN110079709A (zh) * 2019-05-08 2019-08-02 常熟希那基汽车零件有限公司 一种合金材料及其生产工艺

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57143472A (en) * 1981-03-02 1982-09-04 Sumitomo Light Metal Ind Ltd Manufacture of aluminum alloy sheet for forming
US4589932A (en) * 1983-02-03 1986-05-20 Aluminum Company Of America Aluminum 6XXX alloy products of high strength and toughness having stable response to high temperature artificial aging treatments and method for producing
US4614552A (en) * 1983-10-06 1986-09-30 Alcan International Limited Aluminum alloy sheet product
FR2601040B1 (fr) * 1986-07-07 1988-09-02 Cegedur Alliage d'aluminium chaudronnable et soudable et son procede de fabrication
FR2642436B1 (fr) * 1988-12-21 1991-06-14 Pechiney Rhenalu Alliage d'a1 contenant essentiellement du si, du mg et du cu pour emboutissage
JPH036348A (ja) * 1989-06-03 1991-01-11 Kobe Steel Ltd 化成処理性に優れた自動車パネル用アルミニウム合金及びその製造方法
CH685707A5 (de) * 1991-12-16 1995-09-15 Alusuisse Lonza Services Ag Karosserieblech.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9514113A1 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006037588A1 (en) * 2004-10-05 2006-04-13 Aleris Aluminum Koblenz Gmbh Method of heat treating an aluminium alloy member and apparatus therefor
US7491278B2 (en) 2004-10-05 2009-02-17 Aleris Aluminum Koblenz Gmbh Method of heat treating an aluminium alloy member and apparatus therefor
WO2018185425A1 (fr) * 2017-04-06 2018-10-11 Constellium Neuf-Brisach Procede ameliore de fabrication de composant de structure de caisse automobile
FR3065013A1 (fr) * 2017-04-06 2018-10-12 Constellium Neuf-Brisach Procede ameliore de fabrication de composant de structure de caisse automobile
US11649536B2 (en) 2017-04-06 2023-05-16 Constellium Neuf-Brisach Method for manufacturing a structure component for a motor vehicle body
WO2018206696A1 (en) * 2017-05-11 2018-11-15 Aleris Aluminum Duffel Bvba Method of manufacturing an al-si-mg alloy rolled sheet product with excellent formability
US11384418B2 (en) 2017-05-11 2022-07-12 Aleris Aluminum Duffel Bvba Method of manufacturing an Al—Si—Mg alloy rolled sheet product with excellent formability

Also Published As

Publication number Publication date
BR9406554A (pt) 1996-02-06
WO1995014113A1 (fr) 1995-05-26
CA2152402A1 (fr) 1995-05-26
FR2713664B1 (fr) 1996-05-24
KR960700353A (ko) 1996-01-19
DE69418855D1 (de) 1999-07-08
CA2152402C (fr) 2003-09-23
DE69418855T2 (de) 1999-10-07
FR2713664A1 (fr) 1995-06-16
EP0679199B1 (de) 1999-06-02
JPH08505904A (ja) 1996-06-25

Similar Documents

Publication Publication Date Title
EP0679199B1 (de) Al-si-mg-legierung mit verbesserter dehnbarkeit und tiefzieheigenschaften und verfahren zu deren herstellung
JP4903183B2 (ja) 優れた曲げ特性を有するアルミニウム合金の形成方法
EP1472380B1 (de) Blech aus al-si-mg-legierung für karroserie von kraftfahrzeugen
KR20120038008A (ko) 개선된 5ｘｘｘ 알루미늄 합금 및 이로부터 제조된 단조된 알루미늄 합금 제품
WO2019167469A1 (ja) Ａｌ－Ｍｇ－Ｓｉ系アルミニウム合金材
EP1143027A1 (de) Verfahren zur Herstellung von Flugzeugstrukturelementen aus Al-Si-Mg-Legierung
EP0227563B1 (de) Verfahren zur Desensibilisierung gegen Abschieferungskorrosion bei Lithium enthaltenden Aluminiumlegierungen, wobei gleichzeitig hohe mechanische Festigkeitswerte erhalten werden und der Schaden begrenzt bleibt
CN116134169A (zh) 新型6xxx铝合金以及其生产方法
JPH06340940A (ja) プレス成形性、焼付硬化性に優れたアルミニウム合金板及びその製造方法
EP0645467A1 (de) Verfahren zur Desensibilisierung gegen interkristalline Korrosion von Aluminiumlegierungen der Gruppen 2000 und 6000, und Erzeunisse hergestellt nach diesen Verfahren
WO2022181307A1 (ja) アルミニウム合金押出材の製造方法
KR20180095116A (ko) 알루미늄 합금판
JPH10259464A (ja) 成形加工用アルミニウム合金板の製造方法
JPH11350058A (ja) 成形性及び焼き付け硬化性に優れるアルミニウム合金板及びその製造方法
JP2681396B2 (ja) 耐食性に優れた成形加工用アルミニウム合金板の製造法
JPH083675A (ja) 鍛造用アルミニウム合金
FR2857376A1 (fr) ALLIAGE DE AlMgSi
WO2002020862A2 (en) Aluminum free cutting alloys, recycling process for the manufacture thereof and their use
CA2014776A1 (fr) Alliage al-li-cu-mg a bonne deformabilite a froid et bonne resistance aux dommages
WO1997041272A1 (fr) Alliage aluminium-silicium-magnesium pour carrosserie automobile
KR102566343B1 (ko) 인장성이 우수한 6000계 알루미늄 합금의 제조방법
FR2857377A1 (fr) Alliage d'aluminium
FR2712605A1 (fr) Procédé d'obtention d'alliages type Al-Si-Mg à ductilité et emboutissabilité améliorées et produit ainsi obtenu.
JPH05318147A (ja) 耐型かじり性、耐きず性に優れた成形加工用アルミニウム合金合わせ板およびその製造方法
JPH05339669A (ja) 耐型かじり性、耐きず性に優れた成形加工用アルミニウム合金合わせ板およびその製造方法

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: 19950728

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB IT LI

17Q First examination report despatched

Effective date: 19980706

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19990602

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: WILLIAM BLANC & CIE CONSEILS EN PROPRIETE INDUSTRI

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69418855

Country of ref document: DE

Date of ref document: 19990708

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19990602

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: ALCAN INTERNATIONAL LIMITED

Effective date: 20000301

26 Opposition filed

Opponent name: HOOGOVENS ALUMINIUM NV

Effective date: 20000301

Opponent name: ALCAN INTERNATIONAL LIMITED

Effective date: 20000301

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: CORUS ALUMINIUM NV

Effective date: 20000301

Opponent name: ALCAN INTERNATIONAL LIMITED

Effective date: 20000301

RDAH Patent revoked

Free format text: ORIGINAL CODE: EPIDOS REVO

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

APAE Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOS REFNO

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

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

Ref country code: DE

Payment date: 20031021

Year of fee payment: 10

Ref country code: CH

Payment date: 20031021

Year of fee payment: 10

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

Ref country code: FR

Payment date: 20031118

Year of fee payment: 10

APBU Appeal procedure closed

Free format text: ORIGINAL CODE: EPIDOSNNOA9O

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

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

Free format text: STATUS: PATENT REVOKED

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

27W Patent revoked

Effective date: 20040526

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO