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Extract from the Register of European Patents

EP About this file: EP0034694

EP0034694 - Process for producing crystalline zeolite A [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  28.05.1985
Database last updated on 24.08.2024
Most recent event   Tooltip28.05.1985No opposition filed within time limitpublished on 31.07.1985 [1985/31]
Applicant(s)For all designated states
Degussa GmbH
Weissfrauenstrasse 9
60311 Frankfurt / DE
For all designated states
Henkel Kommanditgesellschaft auf Aktien
40191 Düsseldorf / DE
[N/P]
Former [1982/21]For all designated states
Degussa Aktiengesellschaft
Weissfrauenstrasse 9
D-60311 Frankfurt / DE
For all designated states
Henkel Kommanditgesellschaft auf Aktien
D-40191 Düsseldorf / DE
Former [1981/35]For all designated states
Degussa Aktiengesellschaft
Weissfrauenstrasse 9
D-60311 Frankfurt / DE
For all designated states
Henkel Kommanditgesellschaft auf Aktien
-Patentabteilung- Postfach 1100 Henkelstrasse 67
D-4000 Düsseldorf 1 / DE
Inventor(s)01 / Strack, Hans, Dr.
Siedlungsstrasse 26
D-8755 Alzenau / DE
[1981/35]
Application number, filing date81100173.413.01.1981
[1981/35]
Priority number, dateDE1980300704426.02.1980         Original published format: DE 3007044
[1981/35]
Filing languageDE
Procedural languageDE
PublicationType: A1 Application with search report 
No.:EP0034694
Date:02.09.1981
Language:DE
[1981/35]
Type: B1 Patent specification 
No.:EP0034694
Date:25.07.1984
Language:DE
[1984/30]
Search report(s)(Supplementary) European search report - dispatched on:EP11.06.1981
ClassificationIPC:C01B33/28
[1981/35]
CPC:
C01B33/2823 (EP,US); Y10S423/24 (EP,US)
Designated contracting statesAT,   BE,   CH,   DE,   FR,   GB,   IT,   LI,   NL,   SE [1981/35]
TitleGerman:Verfahren zur Herstellung von kristallinem Zeolith A[1981/35]
English:Process for producing crystalline zeolite A[1981/35]
French:Procédé pour la production de zéolite A cristalline[1981/35]
Examination procedure13.01.1981Examination requested  [1981/35]
22.02.1982Despatch of a communication from the examining division (Time limit: M04)
14.05.1982Reply to a communication from the examining division
01.10.1982Despatch of a communication from the examining division (Time limit: M06)
04.03.1983Reply to a communication from the examining division
27.09.1983Despatch of communication of intention to grant (Approval: )
16.12.1983Communication of intention to grant the patent
08.03.1984Fee for grant paid
08.03.1984Fee for publishing/printing paid
Opposition(s)26.04.1985No opposition filed within time limit [1985/31]
Fees paidRenewal fee
12.01.1983Renewal fee patent year 03
28.12.1983Renewal fee patent year 04
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Documents cited:SearchDE2734296  [ ] (HENKEL KGAA, et al)
    [ ] - SPRECHSAAL, Band 112, Nr. 12, 1979 F. WOLF et al. "Zur Synthese und Anwendung zeolithischer Molekularsiebe, Teil I: Synthese" Seiten 917 bis 922
    [ ] - MANUFACTURING CHEMIST & AEROSOL NEWS, Band 49, Nr. 10, 1978 M. ETTLINGER et al. "Synthetic Zeolites as New Builders for Detergents" Seiten 51 bis 66
ExaminationDE2704310
 DE2651436
 DE2651420
 DE2651485
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.