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Extract from the Register of European Patents

EP About this file: EP0200862

EP0200862 - Use of an iron-chromium-nickel alloy resistant to highly concentrated sulfonic acid and to oleum [Right-click to bookmark this link]
StatusPatent revoked
Status updated on  13.03.1998
Database last updated on 20.12.2024
Most recent event   Tooltip17.04.2015Change - lapse in a contracting state
State(s) deleted from list of lapses: CH, LI
published on 20.05.2015  [2015/21]
Applicant(s)For all designated states
BAYER AG
51368 Leverkusen / DE
[N/P]
Former [1986/46]For all designated states
BAYER AG
D-51368 Leverkusen / DE
Inventor(s)01 / Diekmann, Helmut, Dipl.-Ing.
Bienenhof 4
D-5068 Odenthal / DE
02 / Pütz, Günter
Bismarckstrasse 193
D-5090 Leverkusen 1 / DE
03 / Grabowski, Klaus-Peter
Höferhof 7
D-5632 Wermelskirchen 2 / DE
04 / Eichenhofer, Kurt Wilhelm, Dr.
Paul-Klee-Strasse 52
D-5090 Leverkusen / DE
[1986/46]
Application number, filing date86102555.927.02.1986
[1986/46]
Priority number, dateDE1985350853209.03.1985         Original published format: DE 3508532
[1986/46]
Filing languageDE
Procedural languageDE
PublicationType: A1 Application with search report 
No.:EP0200862
Date:12.11.1986
Language:DE
[1986/46]
Type: B1 Patent specification 
No.:EP0200862
Date:01.06.1988
Language:DE
[1988/22]
Search report(s)(Supplementary) European search report - dispatched on:EP22.08.1986
ClassificationIPC:C22C19/05, C22C30/00, C01B17/80, C01B17/88
[1986/46]
CPC:
F28F21/082 (EP); C22C38/40 (EP)
Designated contracting statesAT,   BE,   CH,   DE,   FR,   GB,   IT,   LI,   NL,   SE [1986/46]
TitleGerman:Verwendung einer gegen hochkonzentrierte Schwefelsäure und Oleum beständigen Eisen-Chrom-Nickel-Legierung[1986/46]
English:Use of an iron-chromium-nickel alloy resistant to highly concentrated sulfonic acid and to oleum[1986/46]
French:Application d'un alliage fer-chrome-nickel résistant à l'acide sulfurique hautement concentré et à l'oléum[1986/46]
Examination procedure27.02.1986Examination requested  [1986/46]
17.11.1987Despatch of communication of intention to grant (Approval: Yes)
03.12.1987Communication of intention to grant the patent
09.01.1988Fee for grant paid
09.01.1988Fee for publishing/printing paid
Opposition(s)Opponent(s)01  22.02.1989  22.03.1989  ADMISSIBLE
Monsanto Company
P.O.Box 7020
St.Louis, Missouri 63166-7020 / US
Opponent's representative
Ter Meer Steinmeister & Partner
Patentanwälte mbB
Nymphenburger Strasse 4
80335 München / DE
 [N/P]
Former [1989/17]
Opponent(s)01  22.02.1989  22.03.1989  ADMISSIBLE
Monsanto Company
P.O.Box 7020
St.Louis, Missouri 63166-7020 / US
Opponent's representative
TER MEER - MÜLLER - STEINMEISTER & PARTNER
Mauerkircherstrasse 45
D-81679 München / DE
05.04.1989Invitation to proprietor to file observations on the notice of opposition
25.07.1989Reply of patent proprietor to notice(s) of opposition
02.08.1989Communication of observations of patent proprietor (Time limit: M06)
31.01.1990Reply of parties involved to observations of patent proprietor
06.03.1991Date of oral proceedings
11.04.1991Despatch of a communication from the opposition division (Time limit: M04)
11.04.1991Despatch of minutes of oral proceedings
22.05.1991Reply to a communication from the opposition division
11.12.1991Despatch of a communication from the opposition division (Time limit: M02)
10.01.1992Reply to a communication from the opposition division
25.06.1992Despatch of interlocutory decision in opposition
05.07.1992Legal effect of interlocutory decision in opposition
26.11.1997Despatch of communication that the patent will be revoked
06.12.1997Legal effect of revocation of patent [1998/18]
Appeal following opposition09.07.1992Appeal received No.  T0634/92
19.10.1992Statement of grounds filed
25.02.1997Result of appeal procedure: appeal of the proprietor was rejected
05.11.1996Date of oral proceedings
11.11.1996Minutes of the oral proceedings despatched
Fees paidRenewal fee
21.01.1988Renewal fee patent year 03
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Lapses during opposition  Tooltipdeleted
[2015/21]
Former [2000/52]CH01.06.1988
LI01.06.1988
Documents cited:Search[A]US3649187  (FISHER ARTHUR ORMAN);
 [AD]DE2154126  (CHAS S LEWIS U CO INC);
 [A]US3844774  (CULLING J);
 [A]US3947266  (CULLING JOHN H);
 [A]US4329173  (CULLING JOHN H)
 [A]  - CHEMICAL ABSTRACTS, Band 79, Nr. 8, 27. August 1973, Seiten 142-143, Nr. 44791u, Columbus, Ohio, US; L.A. POLUBOYARTSEVA et al.: "Corrosion resistance of 1Kh18N10T chromium-nickel-titanium steel in fuming sulfuric acid", & KHIM. PROM. (MOSCOW) 1973, 49(5), Seiten 372-373
 [A]  - CHEMICAL ABSTRACTS, Band 100, Nr. 26, 25. Juni 1984, Seite 256, Nr. 214150f, Columbus, Ohio, US; E.M. SAVITSKII et al.: "Oxidation-resistant materials for sulfuric acid-cycle reactors for hydrogen production", & ISSLED. PRIMEN. SPLAVOV TUGOPLAVKIKH MET.,1983, Seiten 144-146
ExaminationEP0130967
 EP0181313
    - Perry's Chemical Engineers Handbook, 6. Auflage, 1984, Seiten 23-44
    - Preisliste der Carpenter Technology Corporation, 14.Januar,1985
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.