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Extract from the Register of European Patents

EP About this file: EP0502083

EP0502083 - METHOD FOR PRODUCING ALKALI METAL SILICATES [Right-click to bookmark this link]
StatusThe application has been withdrawn
Status updated on  26.08.1993
Database last updated on 02.11.2024
Most recent event   Tooltip12.07.1996Change - applicantpublished on 28.08.1996 [1996/35]
Applicant(s)For all designated states
Henkel Kommanditgesellschaft auf Aktien
40191 Düsseldorf / DE
[1996/35]
Former [1992/37]For all designated states
Henkel Kommanditgesellschaft auf Aktien
D-40191 Düsseldorf / DE
Inventor(s)01 / HACHGENEI, Johannes, W.
Hospitalstrasse 18
D-4000 Düsseldorf 13 / DE
02 / NOVOTNY, Rudolf
Am Rittersberg 14
D-4000 Düsseldorf 13 / DE
03 / CHRISTOPHLIEMK, Peter
Rudolf-Breitscheid-Strasse 61
D-4000 Düsseldorf 13 / DE
04 / DOLHAINE, Hans
Mercatorstrasse 15
D-4000 Düsseldorf 11 / DE
05 / FÖLL, Jürgen
Nosenbergerstrasse 34
D-4000 Düsseldorf / DE
[1992/37]
Application number, filing date91900249.314.11.1990
[1992/37]
WO1990EP01947
Priority number, dateDE1989393872923.11.1989         Original published format: DE 3938729
[1992/37]
Filing languageDE
Procedural languageDE
PublicationType: A1 Application with search report
No.:WO9108169
Date:13.06.1991
Language:DE
[1991/13]
Type: A1 Application with search report 
No.:EP0502083
Date:09.09.1992
Language:DE
The application published by WIPO in one of the EPO official languages on 13.06.1991 takes the place of the publication of the European patent application.
[1992/37]
Search report(s)International search report - published on:EP13.06.1991
ClassificationIPC:C01B33/32
[1992/37]
CPC:
C01B33/32 (EP,KR,US)
Designated contracting statesAT,   BE,   CH,   DE,   DK,   ES,   FR,   GB,   GR,   IT,   LI,   LU,   NL,   SE [1992/37]
TitleGerman:VERFAHREN ZUR HERSTELLUNG VON ALKALIMETALLSILICATEN[1992/37]
English:METHOD FOR PRODUCING ALKALI METAL SILICATES[1992/37]
French:PROCEDE DE PRODUCTION DE SILICATES DE METAUX ALCALINS[1992/37]
File destroyed:12.06.1999
Entry into regional phase14.05.1992National basic fee paid 
14.05.1992Designation fee(s) paid 
14.05.1992Examination fee paid 
Examination procedure24.04.1991Request for preliminary examination filed
International Preliminary Examining Authority: DE
14.05.1992Examination requested  [1992/37]
12.08.1993Application withdrawn by applicant  [1993/41]
Fees paidRenewal fee
22.10.1992Renewal fee patent year 03
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Cited inInternational searchDE1900066  [ ] (COLUMBIAN CARBON)
 [A]  - Chemical Abstracts, Band 78, Nr. 8, 26. Februar 1973, (Columbus, Ohio, US), V.A. Avakov: "Comparative solubility of some silica modifications"siehe Seite 222
 [A]  - Chemical Abstracts, Band 91, Nr. 18, 29. Oktober 1979, (Columbus, Ohio, US), V.A. Afanas'eva et al.: "Study of tripoli solubility in the production of glass"Seite 105
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.