|
C14C 1/00
|
Treating skins or hides with chemicals, enzymes or microorganisms prior to tanning |
|
C14C 1/02
|
Curing raw hides |
|
C14C 1/04
|
Soaking |
|
C14C 1/06
|
Facilitating unhairing, e.g. by painting, by liming |
|
C14C 1/08
|
DelimingBatingPicklingDegreasing |
|
C14C 3/00
|
TanningCompositions for tanning |
|
C14C 3/02
|
Chemical tanning |
|
C14C 3/04
|
Mineral tanning |
|
C14C 3/06
|
Mineral tanning using chromium compounds |
|
C14C 3/08
|
Chemical tanning by organic agents |
|
C14C 3/10
|
Vegetable tanning |
|
C14C 3/12
|
Vegetable tanning using purified or modified vegetable tanning agents |
|
C14C 3/14
|
Fat tanningOil tanning |
|
C14C 3/16
|
Chemical tanning by organic agents using aliphatic aldehydes |
|
C14C 3/18
|
Chemical tanning by organic agents using polycondensation products or precursors thereof |
|
C14C 3/20
|
Chemical tanning by organic agents using polycondensation products or precursors thereof sulfonated |
|
C14C 3/22
|
Chemical tanning by organic agents using polymerisation products |
|
C14C 3/24
|
Chemical tanning by organic agents using lignin derivatives, e.g. sulfate liquor |
|
C14C 3/26
|
Chemical tanning by organic agents using other organic substances, containing halogen |
|
C14C 3/28
|
Multi-step processes |
|
C14C 3/30
|
Chemical tanning using physical means combined with chemical means |
|
C14C 3/32
|
Recovering tanning agents from leather |
|
C14C 5/00
|
Degreasing leather |
|
C14C 7/00
|
Chemical aspects of pasting processes |
|
C14C 9/00
|
Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes |
|
C14C 9/02
|
Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes using fatty or oily materials, e.g. fat liquoring |
|
C14C 9/04
|
Fixing tanning agents in the leather |
|
C14C 11/00
|
Surface finishing of leather |
|
C14C 13/00
|
Manufacture of special kinds of leather, e.g. vellum |
|
C14C 13/02
|
Manufacture of technical leather |
|
C14C 15/00
|
Apparatus for chemical treatment or washing of hides, skins, or leather |
|
C14C 99/00
|
Subject matter not provided for in other groups of this subclass |
