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Current content: 159 679 824 patent documents

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164 112 new documents added

576 445 documents amended

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EP 0084134 B1 19860730 - RETANNING PROCESS

Title (en)

RETANNING PROCESS

Publication

EP 0084134 B1 19860730 (DE)

Application

EP 82111711 A 19821216

Priority

DE 3201226 A 19820116

Abstract (en)

[origin: US4596581A] An amino-containing and carboxyl-containing polymer tanning agent containing more carboxyl groups than amino groups, when used for retanning mineral-tanned leather, gives, alone or in combination with conventional anionic retanning agents, leather which is readily dyeable and has good sensory properties.

IPC 1-7

C14C 3/28

IPC 8 full level

C14C 3/22 (2006.01); C14C 3/28 (2006.01)

CPC (source: EP US)

C14C 3/22 (2013.01 - EP US); C14C 3/28 (2013.01 - EP US)

Designated contracting state (EPC)

CH DE FR GB IT LI

DOCDB simple family (publication)

EP 0084134 A2 19830727; EP 0084134 A3 19830803; EP 0084134 B1 19860730; DE 3201226 A1 19830728; DE 3272390 D1 19860904; JP H0231760 B2 19900716; JP S58125800 A 19830726; US 4596581 A 19860624

DOCDB simple family (application)

EP 82111711 A 19821216; DE 3201226 A 19820116; DE 3272390 T 19821216; JP 127383 A 19830110; US 73280885 A 19850510