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Extract from the Register of European Patents

EP About this file: EP0538755

EP0538755 - Process for treating by autoclave of porous piece-goods [Right-click to bookmark this link]
StatusPatent revoked
Status updated on  21.01.2000
Database last updated on 11.04.2026
Most recent event   Tooltip08.08.2008Change - opposition data/opponents data or that of the opponents representativepublished on 10.09.2008  [2008/37]
Applicant(s)For all designated states
SICOWA Verfahrenstechnik für Baustoffe GmbH & Co. KG
Dormagener Strasse 46
50126 Bergheim / DE
[1999/52]
Former [1993/17]For:BE  DE  DK  ES  FR  GB  GR  IT  NL 
Hebel Aktiengesellschaft
Postfach 13 53
D-82243 Fürstenfeldbruck / DE
For all designated states
SICOWA Verfahrenstechnik für Baustoffe GmbH & Co. KG
Handerweg 17
D-52072 Aachen / DE
Inventor(s)01 / Wosnitza, Franz, Prof. Dr.-Ing.
Walburga-Brühl-Strasse 34
W-5100 Aachen / DE
02 / Beckmann, Georg, Dipl.-Ing. Dr.
Jacquinegasse 55/10
A-1030 Wien / AT
03 / Zimmermann, Georg, Dipl.-Phys.
Marienstrasse 24
W-5100 Aachen / DE
[1993/17]
Representative(s)Zenz, Joachim Klaus, et al
ZENZ Patent- und Rechtsanwälte Rüttenscheider Strasse 2
45128 Essen / DE
[N/P]
Former [1999/52]Zenz, Joachim Klaus, Dipl.-Ing., et al
Zenz, Helber, Hosbach & Partner, Patentanwälte, Huyssenallee 58-64
45128 Essen / DE
Former [1999/03](deleted)
Former [1993/17]Sparing Röhl Henseler Patentanwälte
Postfach 14 04 43
D-40074 Düsseldorf / DE
Application number, filing date92117776.217.10.1992
[1993/17]
Priority number, dateDE1991413511924.10.1991         Original published format: DE 4135119
[1993/17]
Filing languageDE
Procedural languageDE
PublicationType: A1 Application with search report 
No.:EP0538755
Date:28.04.1993
Language:DE
[1993/17]
Type: B1 Patent specification 
No.:EP0538755
Date:30.11.1994
Language:DE
[1994/48]
Search report(s)(Supplementary) European search report - dispatched on:EP08.02.1993
ClassificationIPC:B01J3/04, B01J3/00, C04B40/02
[1993/17]
CPC:
B01J3/002 (EP,US); B01J3/04 (EP,KR,US); C04B40/024 (EP,US);
Y10S264/43 (EP,US)
Designated contracting statesAT,   BE,   CH,   DE,   DK,   ES,   FR,   GB,   GR,   IE,   IT,   LI,   LU,   NL,   PT,   SE [1993/17]
TitleGerman:Verfahren zum Autoklavieren von porösem, stückigem Gut[1993/17]
English:Process for treating by autoclave of porous piece-goods[1993/17]
French:Procédé pour traiter en autoclave de produits poreux en morceaux[1993/17]
Examination procedure07.08.1993Examination requested  [1993/40]
26.03.1994Request for accelerated examination filed
17.05.1994Despatch of communication of intention to grant (Approval: Yes)
17.05.1994Decision about request for accelerated examination - accepted: Yes
27.05.1994Communication of intention to grant the patent
08.06.1994Fee for grant paid
08.06.1994Fee for publishing/printing paid
Opposition(s)Opponent(s)01  22.08.1995  30.08.1995  ADMISSIBLE
YTONG AG
Hornstrasse 3
D-80797 München / DE
Opponent's representative
Dr. Solf & Zapf Patent- und Rechtsanwalts PartG mbB
Candidplatz 15
81543 München / DE
 [N/P]
Former [2008/37]
Opponent(s)01  22.08.1995  30.08.1995  ADMISSIBLE
YTONG AG
Hornstrasse 3
D-80797 München / DE
Opponent's representative
Patentanwälte Dr. Solf & Zapf
Candidplatz 15
81543 München / DE
Former [1995/41]
Opponent(s)01  22.08.1995  30.08.1995  ADMISSIBLE
YTONG AG
Hornstrasse 3
D-80797 München / DE
Opponent's representative
Patentanwälte Dr. Solf & Zapf
Candidplatz 15
D-81543 München / DE
03.11.1995Invitation to proprietor to file observations on the notice of opposition
17.02.1996Reply of patent proprietor to notice(s) of opposition
01.03.1996Communication of observations of patent proprietor (Time limit: M02)
02.05.1996Reply of parties involved to observations of patent proprietor
22.11.1999Legal effect of revocation of patent [2000/10]
22.11.1999Despatch of communication that the patent will be revoked
Appeal following opposition08.01.1997Appeal received No.  T0037/97
20.03.1997Statement of grounds filed
22.11.1999Result of appeal procedure: revocation of the patent
22.11.1999Date of oral proceedings
25.11.1999Minutes of the oral proceedings despatched
Fees paidRenewal fee
30.09.1994Renewal fee patent year 03
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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.
Lapses during opposition  TooltipPT01.03.1995
IE31.10.1995
AT17.10.1998
GB17.10.1998
LU17.10.1998
SE18.10.1998
ES19.10.1998
BE31.10.1998
CH31.10.1998
LI31.10.1998
DK30.11.1998
GR30.04.1999
NL01.05.1999
FR30.06.1999
[2005/24]
Former [2004/50]PT01.03.1995
IE31.10.1995
AT17.10.1998
GB17.10.1998
LU17.10.1998
SE18.10.1998
ES19.10.1998
BE31.10.1998
CH31.10.1998
LI31.10.1998
DK30.11.1998
NL01.05.1999
GR28.05.1999
FR30.06.1999
Former [2004/38]PT01.03.1995
IE31.10.1995
AT17.10.1998
GB17.10.1998
LU17.10.1998
SE18.10.1998
ES19.10.1998
BE31.10.1998
CH31.10.1998
LI31.10.1998
DK30.11.1998
NL01.05.1999
FR30.06.1999
Former [2003/50]PT01.03.1995
IE31.10.1995
AT17.10.1998
GB17.10.1998
SE18.10.1998
BE31.10.1998
CH31.10.1998
LI31.10.1998
LU31.10.1998
DK30.11.1998
NL01.05.1999
FR30.06.1999
Former [2002/45]PT01.03.1995
IE31.10.1995
AT17.10.1998
GB17.10.1998
SE18.10.1998
BE31.10.1998
CH31.10.1998
LI31.10.1998
LU31.10.1998
NL01.05.1999
FR30.06.1999
Former [2001/51]CH30.11.1994
LI30.11.1994
PT01.03.1995
IE31.10.1995
AT17.10.1998
GB17.10.1998
SE18.10.1998
BE31.10.1998
LU31.10.1998
NL01.05.1999
FR30.06.1999
Former [2001/25]CH30.11.1994
LI30.11.1994
PT01.03.1995
IE31.10.1995
AT17.10.1998
GB17.10.1998
BE31.10.1998
LU31.10.1998
NL01.05.1999
FR30.06.1999
Former [2000/24]PT01.03.1995
IE31.10.1995
AT17.10.1998
GB17.10.1998
BE31.10.1998
LU31.10.1998
NL01.05.1999
FR30.06.1999
Former [2000/23]PT01.03.1995
IE31.10.1995
AT17.10.1998
GB17.10.1998
BE31.10.1998
LU31.10.1998
NL01.05.1999
Former [2000/21]PT01.03.1995
IE31.10.1995
AT17.10.1998
GB17.10.1998
LU31.10.1998
Former [2000/07]PT01.03.1995
IE31.10.1995
GB17.10.1998
LU31.10.1998
Former [2000/03]PT01.03.1995
IE31.10.1995
GB17.10.1998
Former [1998/38]PT01.03.1995
IE31.10.1995
Former [1996/04]PT01.03.1995
Documents cited:Search[Y] DE3041045  (SCHOLZ GMBH CO KG MASCHBAU et al.) [Y]
 [Y] DE2215126  (DAHMIT BRENN UND BAUSTOFFGESEL et al.) [Y]
 [A] US2534303  (SERINIS NEO S et al.) [A]
 [A] EP0099502  (YTONG AG et al.) [A]
 [AD] EP0133239  (SICOWA VERFAHRENSTECH et al.) [AD]
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.