Extract from the Register of European Patents

EP About this file: EP0062749

EP0062749 - Method for the production of precipitated silicas [Right-click to bookmark this link]
Former [1982/42]Precipitated silicas and method for their production
[1985/21]
StatusNo opposition filed within time limit
Status updated on  26.03.1986
Database last updated on 28.03.2026
Most recent event   Tooltip26.03.1986No opposition filed within time limitpublished on 14.05.1986 [1986/20]
Applicant(s)For all designated states
Degussa GmbH
Weissfrauenstrasse 9
60311 Frankfurt / DE
[N/P]
Former [1982/42]For all designated states
Degussa Aktiengesellschaft
Weissfrauenstrasse 9
D-60311 Frankfurt / DE
Inventor(s)01 / Nauroth, Peter
Germanusstrasse 8
D-5047 Wesseling / DE
02 / Kuhlmann, Robert
Paul-Keller-Strasse 24
D-5042 Erftstadt / DE
03 / Türk, Günter, Dr.
Liesingstrasse 3
D-6450 Hanau 9 / DE
04 / Becker, Adam
Weser Strasse 17
D-5303 Bron.-Hersel / DE
[1982/42]
Application number, filing date82101471.926.02.1982
[1982/42]
Priority number, dateDE1981311449310.04.1981         Original published format: DE 3114493
[1982/42]
Filing languageDE
Procedural languageDE
PublicationType: A1 Application with search report 
No.:EP0062749
Date:20.10.1982
Language:DE
[1982/42]
Type: B1 Patent specification 
No.:EP0062749
Date:22.05.1985
Language:DE
[1985/21]
Search report(s)(Supplementary) European search report - dispatched on:EP03.06.1982
ClassificationIPC:C01B33/193, // C09C1/30, C08K3/36, C08L21/00
[1982/42]
CPC:
A61K8/25 (EP,US); A61Q11/00 (EP,US); C01B33/193 (EP,US);
C09C1/30 (EP,US); A61K2800/412 (EP,US); C01P2004/50 (EP,US);
C01P2004/51 (EP,US); C01P2004/61 (EP,US); C01P2006/10 (EP,US);
C01P2006/11 (EP,US); C01P2006/12 (EP,US); C01P2006/19 (EP,US);
C01P2006/22 (EP,US); C01P2006/60 (EP,US); C01P2006/80 (EP,US);
C01P2006/82 (EP,US); C01P2006/90 (EP,US) (-)
Designated contracting statesAT,   BE,   CH,   DE,   FR,   GB,   IT,   LI,   NL,   SE [1982/42]
TitleGerman:Verfahren zur Herstellung von Fällungskieselsäuren[1985/21]
English:Method for the production of precipitated silicas[1985/21]
French:Procédé pour l'obtention de silices précipitées[1985/21]
Former [1982/42]Fällungskieselsäuren und Verfahren zu ihrer Herstellung
Former [1982/42]Precipitated silicas and method for their production
Former [1982/42]Silices précipitées et procédé pour leur obtention
Examination procedure26.02.1982Examination requested  [1982/42]
12.12.1983Despatch of a communication from the examining division (Time limit: M04)
11.04.1984Reply to a communication from the examining division
17.08.1984Despatch of communication of intention to grant (Approval: )
07.11.1984Communication of intention to grant the patent
17.01.1985Fee for grant paid
17.01.1985Fee for publishing/printing paid
Opposition(s)25.02.1986No opposition filed within time limit [1986/20]
Fees paidRenewal fee
03.02.1984Renewal fee patent year 03
07.02.1985Renewal fee patent year 04
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