Patent details

Basic Information

Publication number:

EP0177671

PCT Application Number:

Type:

European Patent Granted for LU

Legal Status:

Expired

Application number:

EP851065573

PCT Publication Number:

First applicant's nationality:

Translation Language:

EPO Publication Language:

German

English Title of Invention:

Process for the preparation of sodium polysulphides from the elements sodium and sulphur.

French Title of Invention:

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

German Title of Invention:

Verfahren zur Herstellung von Natriumpolysulfiden aus den Elementen Natrium und Schwefel.

SPC Number:

Dates

Filing date:

29/05/1985

Grant date:

29/06/1988

EP Publication Date:

29/06/1988

PCT Publication Date:

Claims Translation Received Date:

Translations Received Date (B1 EP Publication):

Translations Received Date (B2 EP Publication):

Translations Received Date (B3 EP Publication):

Publication date:

16/04/1986

EP B1 Publication Date:

29/06/1988

EP B2 Publication Date:

EP B3 Publication Date:

Lapsed date:

Expiration date:

29/05/2005

Renunciation date:

Revocation date:

Annulment date:

Owner

From:

04/06/2002

 

 

Name:

DEGUSSA AKTIENGESELLSCHAFT

Address:

BENNIGSENPLATZ 1, 40474, DÜSSELDORF, Germany (DE)

History of Owners

From:

04/06/2003

To:

04/06/2003

Name:

DEGUSSA-HÜLS AKTIENGESELLSCHAFT

Address:

WEISSFRAUENSTRASSE 9, 60287, FRANKFURT AM MAIN, Germany (DE)

From:

29/05/1985

To:

03/06/2003

Name:

DEGUSSA AKTIENGESELLSCHAFT

Address:

WEISSFRAUENSTRASSE 9, 6000, FRANKFURT AM MAIN 1, Germany (DE)

Agent

Name:

Office FREYLINGER S.A.

From:

23/08/1988

Address:

PO Box 48, 8001, STRASSEN, Luxembourg (LU)

To:

Inventor

1

Name:

Splett Erich

Address:

Germany (DE)

2

Name:

Lange Ludwig, Dr.

Address:

Germany (DE)

3

Name:

Bittner Friedrich, Dr.

Address:

Germany (DE)

4

Name:

Hovestadt Herbert, Dr.

Address:

Germany (DE)

5

Name:

Hinrichs Walter, Dr.

Address:

Germany (DE)

Priority

Priority Number:

3436698

Priority Date:

06/10/1984

Priority Country:

Germany (DE)

Classification

Main IPC Class:

C01B 17/30;

Filing date	Document type	Number of pages