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Patent details

177671 Title: Procédé de préparation de polysulfures de sodium à partir des éléments sodium et soufre.

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Basic information

Application number:
851065573
WO application number:
Type:
European patent granted for BE
Status:
Publication number:
177671
WO publication number:
1rst applicant's nationality:
Translation language:
French
EPO publication language:
German
SPC number:

Dates

Filing date:
29/05/1985
Grant date:
29/06/1988
EP publication date:
WO publication date:
Claims translation received date:
30/04/1986
Translation received date (EP publication B1):
08/08/1988
Translation received date (EP publication B2):
Translation received date (EP publication B3):
Registration date:
EP B1 publication date:
29/06/1988
EP B2 publication date:
EP B3 publication date:
Lapsed date:
Expiration date (if granted and all annual fees paid):
29/05/2005

Applicant

Name:
Degussa AG
Legal Form:
From:
07/04/2003
Address:
Bennigsenplatz 1 D-40474 Düsseldorf(DE), DE
To:

Priority

Priority patent number:
3436698
Priority date:
06/10/1984
Priority country:
Germany (DE)

Classification

IPC or IDT classification:
C01B 17/30;

Annual fee

Annual fee(s) Due Date:
Annual fee number:
Expected payer:
Last annual fee payment date:
28/05/2004
Last annual fee paid number:
Payer:

Additional information section

Status:
Case kind / Max duration / Publication code:
Basic patent details (Patent law 1854):
Representative details:
VAN MALDEREN MICHEL-pronovem Office Van Malderen-Parc Z. Gramme bât.K -Sq Conduites d'eau 1&2 -B 4020 LIEGE
Inventor(s) details:
Bittner, Friedrich, Dr.;Hinrichs, Walter, Dr.;Hovestadt, Herbert, Dr.;Lange, Ludwig, Dr.;Splett, Erich;
History of owners:
(1) 29.06.1988 : DEGUSSA A.G. * (DE) Weissfrauenstrasse 9, D-6000 Frankfurt am Main 1 * (2) 07.04.2003 : DEGUSSA-HÜLS A.G. * (DE) Weissfrauenstrasse 9, D-60311 Frankfurt am Main *
Filing date Document type Publication Type Document Description Number of pages
08/08/1988 General Document (TO - T:Traduction Originale) 11 /1/7/6/7/7/0510177671/migrated-docs/851065573_1_553436.pdf