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Extract from the Register of European Patents

EP About this file: EP0361554

EP0361554 - Use of ferritic chromium-molybdenum steels as materials resisting concentrated sulfuric acid [Right-click to bookmark this link]
StatusPatent revoked
Status updated on  23.10.1998
Database last updated on 05.10.2024
Most recent event   Tooltip05.10.2005Change: Appeal number 
Applicant(s)For all designated states
METALLGESELLSCHAFT AG
Postfach 10 15 01
60015 Frankfurt / DE
[N/P]
Former [1990/14]For all designated states
METALLGESELLSCHAFT AG
Postfach 10 15 01, Reuterweg 14
D-60015 Frankfurt / DE
Inventor(s)01 / Dörr, Karl-Heinz
Am Gonsenheimer Spiess 6
D-6500 Mainz / DE
02 / Müller, Hermann
Lehenthal 34
D-8650 Kulmbach / DE
03 / Sander, Ulrich, Dr.
Taunusstrasse 116
D-6382 Friedrichsdorf / DE
04 / Schalk, Wolfram
Geschw.-Scholl-Weg 4
D-6392 Neu-Anspach / DE
05 / Wallis, Ernst, Dr.
Berliner Strasse 8
D-6236 Eschborn / DE
[1990/14]
Application number, filing date89202071.010.08.1989
[1990/14]
Priority number, dateDE1988383036507.09.1988         Original published format: DE 3830365
[1990/14]
Filing languageDE
Procedural languageDE
PublicationType: A1 Application with search report 
No.:EP0361554
Date:04.04.1990
Language:DE
[1990/14]
Type: B1 Patent specification 
No.:EP0361554
Date:09.06.1993
Language:DE
[1993/23]
Search report(s)(Supplementary) European search report - dispatched on:EP08.02.1990
ClassificationIPC:C22C38/48, C22C38/44
[1990/14]
CPC:
F28F21/082 (EP,US); C22C38/44 (EP,US); C22C38/48 (EP,US)
Designated contracting statesBE,   DE,   ES,   FR,   GB,   IT,   NL,   SE [1990/14]
TitleGerman:Verwendung von ferritischen Chrom-Molybdän-Stählen als gegen konzentrierte Schwefelsäure beständigem Werkstoff[1990/14]
English:Use of ferritic chromium-molybdenum steels as materials resisting concentrated sulfuric acid[1990/14]
French:Mise en oeuvre d'aciers ferritiques au chrome-molybdène comme matériau résistant à l'acide sulfurique concentré[1990/14]
Examination procedure21.06.1990Examination requested  [1990/33]
03.01.1992Despatch of a communication from the examining division (Time limit: M04)
12.05.1992Reply to a communication from the examining division
02.11.1992Despatch of communication of intention to grant (Approval: Yes)
09.12.1992Communication of intention to grant the patent
16.12.1992Fee for grant paid
16.12.1992Fee for publishing/printing paid
Opposition(s)Opponent(s)01  25.02.1994  12.04.1994  ADMISSIBLE
Bayer AG, Leverkusen Konzernverwaltung RP Patente Konzern
Bayerwerk
D-51368 Leverkusen / DE
 [N/P]
Former [1994/17]
Opponent(s)01  25.02.1994  12.04.1994  ADMISSIBLE
Bayer AG, Leverkusen Konzernverwaltung RP Patente Konzern
Bayerwerk
D-51368 Leverkusen / DE
18.04.1994Invitation to proprietor to file observations on the notice of opposition
30.07.1994Reply of patent proprietor to notice(s) of opposition
05.04.1995Date of oral proceedings
19.04.1995Despatch of minutes of oral proceedings
19.04.1995Despatch of communication that the patent will be revoked
17.09.1998Legal effect of revocation of patent [1998/50]
Appeal following opposition04.05.1995Appeal received No.  T0419/95
01.08.1995Statement of grounds filed
17.09.1998Result of appeal procedure: appeal of the proprietor was rejected
17.09.1998Date of oral proceedings
24.09.1998Minutes of the oral proceedings despatched
Fees paidRenewal fee
09.07.1991Renewal fee patent year 03
10.07.1992Renewal fee patent year 04
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Patent Court		 See the Register of the Unified Patent Court for opt-out data
Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Documents cited:Search[A]FR2324752  (SANDVIK AB [SE]);
 [A]FR2349659  (CRUCIBLE INC [US]);
 [A]FR2197996  (SCHOELLER BLECKMANN STAHLWERKE [AT]);
 [AD]DE3320527  (CANADIAN IND [CA]);
 [A]DE3508532  (BAYER AG [DE])
ExaminationEP0018131
    - STAHL UND EISEN, 1990; Seite 73#
    - STAHLSCHLÜSSEL, 1985; Seite 344, Nr. 41#
    - STAHLSCHLÜSSEL, 1992; Seite 292, Nr. 1.4575#
The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.