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Current content: 159 515 718 patent documents

This week's update (01/11/2024 12:00 CET):

154 531 new documents added

1 078 520 documents amended

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EP 0069772 B1 19860716 - SACRIFICIAL REINFORCEMENT IN CATION EXCHANGE MEMBRANE

Title (en)

SACRIFICIAL REINFORCEMENT IN CATION EXCHANGE MEMBRANE

Publication

EP 0069772 B1 19860716 (EN)

Application

EP 82900710 A 19820115

Priority

US 22565181 A 19810116

Abstract (en)

[origin: WO8202564A1] A fluorocarbon cation exchange membrane containing a sacrificial reinforcement for tear resistance which, in use as a cation exchange membrane for alkali metal chloride electrolysis, degrades to provide low voltage operation of the electrolytic cell.

IPC 1-7

C25B 1/34; C25B 9/00; C25B 13/02; C25B 13/08

IPC 8 full level

C25B 13/00 (2006.01)

CPC (source: EP)

C25B 1/46 (2013.01); C25B 13/02 (2013.01); C25B 13/08 (2013.01)

Citation (examination)

US 4021327 A 19770503 - GROT WALTHER GUSTAV

Designated contracting state (EPC)

BE DE FR GB NL

DOCDB simple family (publication)

WO 8202564 A1 19820805; DE 3271961 D1 19860821; EP 0069772 A1 19830119; EP 0069772 A4 19830516; EP 0069772 B1 19860716

DOCDB simple family (application)

US 8200040 W 19820115; DE 3271961 T 19820115; EP 82900710 A 19820115