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Extract from the Register of European Patents

EP About this file: EP0394500

EP0394500 - Process for the production of sintered alpha-alumina bodies [Right-click to bookmark this link]
StatusPatent revoked
Status updated on  12.07.1995
Database last updated on 11.09.2024
Most recent event   Tooltip25.07.2008Change - opposition data/opponents data or that of the opponents representativepublished on 27.08.2008  [2008/35]
Applicant(s)For all designated states
H.C. Starck GmbH & Co. KG
Im Schleeke 78-91
38642 Goslar / DE
[N/P]
Former [1992/36]For all designated states
H.C. Starck GmbH & Co. KG
Im Schleeke 78-91
D-38642 Goslar / DE
Former [1990/44]For all designated states
Hermann C. Starck Berlin GmbH & Co. KG
Eschenallee 36
D-14050 Berlin / DE
Inventor(s)01 / Möltgen, Paul, Dr.
Steigmattstrasse 2
D-7887 Laufenburg / DE
[1990/44]
Representative(s)Steiling, Lothar, et al
Bayer AG BAG-LP-IPM Gebäude Q 18
51368 Leverkusen / DE
[N/P]
Former [1990/44]Steiling, Lothar, Dr., et al
Bayer AG Konzernzentrale RP Patente Konzern
D-51368 Leverkusen / DE
Application number, filing date89106819.917.04.1989
[1990/44]
Filing languageDE
Procedural languageDE
PublicationType: A1 Application with search report 
No.:EP0394500
Date:31.10.1990
Language:DE
[1990/44]
Type: B1 Patent specification 
No.:EP0394500
Date:17.03.1993
Language:DE
[1993/11]
Search report(s)(Supplementary) European search report - dispatched on:EP07.11.1989
ClassificationIPC:C04B35/10, C01F7/02, C09K3/14
[1990/44]
CPC:
C04B35/1115 (EP); C01F7/02 (EP); C09K3/1409 (EP);
C01P2004/62 (EP)
Designated contracting statesAT,   BE,   CH,   DE,   ES,   FR,   GB,   IT,   LI,   NL,   SE [1990/44]
TitleGerman:Verfahren zur Herstellung von alpha-A1203-Sinterkörpern[1990/44]
English:Process for the production of sintered alpha-alumina bodies[1990/44]
French:Procédé pour la préparation de corps frittes en alumine alpha[1990/44]
Examination procedure17.04.1989Examination requested  [1990/44]
16.01.1992Despatch of a communication from the examining division (Time limit: M04)
30.04.1992Reply to a communication from the examining division
24.08.1992Despatch of communication of intention to grant (Approval: Yes)
09.09.1992Communication of intention to grant the patent
28.09.1992Fee for grant paid
28.09.1992Fee for publishing/printing paid
Opposition(s)Opponent(s)01  17.12.1993   
Minnesota Mining and Manufacturing Company
P.O. Box 33427
St. Paul, Minnesota 55133-3427 / US
Opponent's representative
Vossius & Partner Patentanwälte Rechtsanwälte mbB
Siebertstrasse 3
81675 München / DE
 [N/P]
Former [2008/35]
Opponent(s)01  17.12.1993   
Minnesota Mining and Manufacturing Company
P.O. Box 33427
St. Paul, Minnesota 55133-3427 / US
Opponent's representative
Vossius & Partner
Siebertstrasse 3
81675 München / DE
Former [1994/06]
Opponent(s)01  17.12.1993   
Minnesota Mining and Manufacturing Company
P.O. Box 33427
St. Paul, Minnesota 55133-3427 / US
Opponent's representative
VOSSIUS & PARTNER
Siebertstrasse 4
D-81675 München / DE
20.01.1994Invitation to proprietor to file observations on the notice of opposition
10.06.1994Reply of patent proprietor to notice(s) of opposition
17.06.1994Communication of observations of patent proprietor (Time limit: M04)
31.08.1994Reply of parties involved to observations of patent proprietor
22.03.1995Date of oral proceedings
04.04.1995Despatch of minutes of oral proceedings
04.04.1995Despatch of communication that the patent will be revoked
14.04.1995Legal effect of revocation of patent [1995/35]
Fees paidRenewal fee
28.12.1990Renewal fee patent year 03
19.03.1992Renewal fee patent year 04
Opt-out from the exclusive  Tooltip
competence of the Unified
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.
Lapses during opposition  TooltipBE17.03.1993
GB17.03.1993
NL17.03.1993
SE17.03.1993
CH30.04.1993
LI30.04.1993
ES18.06.1993
[2004/38]
Former [1994/18]BE17.03.1993
GB17.03.1993
NL17.03.1993
SE17.03.1993
CH30.04.1993
LI30.04.1993
Former [1994/02]BE17.03.1993
GB17.03.1993
NL17.03.1993
SE17.03.1993
Former [1993/47]BE17.03.1993
NL17.03.1993
SE17.03.1993
Former [1993/46]NL17.03.1993
SE17.03.1993
Former [1993/45]NL17.03.1993
Documents cited:Search[A]US2915365  (FERNAND SAUSSOL);
 [A]US3226191  (OSMENT HARRY E, et al);
 [A]EP0227374  (MINNESOTA MINING & MFG [US]);
 [AD]US4797139  (BAUER RALPH [CA])
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.