CPC Definition - Subclass C14C
This place covers:
Preparatory steps prior to tanning.
Chemical aspects of tanning (chemical compounds).
Impregnation of leather.
Coating of leather with polymers.
Devices such as drums for the chemical treatment of hides, skins or leather.
This place does not cover:
Gelatine for foodstuff | |
Layered products next to a fibrous layer | |
Peptides or collagen | |
Macromolecular products derived from leather | |
Polishing compositions | |
Preparation of glue or gelatine from leather scrap | |
Enzymes and Compositions thereof | |
Mechanical treatment or processing of skins, hides or leather | |
Artificial leather | |
Dyeing of leather |
Attention is drawn to the following places, which may be of interest for search:
Footwear made of animal fibres | |
Application of coating compositions onto the leather when surface-finishing of the leather | |
Polyurea or polyurethane coatings |
For the chemical treatment of hides, skins or leather several main group or subgroup classes can be given, if considered useful for search matters. Primarily the subject-matter disclosed in the examples of a patent document is to classified.
In this place, the following terms or expressions are used with the meaning indicated:
Liming | Treatment of hides or skins with lime solution or other alkalis e.g. caustic soda to destroy the hair or wool, remove proteins and fat |
Pelt | Hide or skin in the dehaired or dewooled, limed, fleshed, perhaps bated (delimed) and scudded condition; Ready for tanning |
Raw hide | Product made from bovine hides, freed from the hair and the flesh layer and dried out in the limed state |
Suede | Leather with a velvet-like surface |
Wet-blue | Hide or skin, subjected to the usual beamhouse processes, chrome-tanned and left wet |
In patent documents, the following abbreviations are often used:
BOD | Biological oxygen demand |
THP | Tetrakis(hydroxymethyl)phosphonium |
In patent documents, the following words/expressions are often used as synonyms:
- "drum", "vessel" and "vat"
This place covers:
The application of coating compositions onto the leather.
C14C 11/006 mainly covers the formation of polyurea or polyurethane coatings. Therefore, classification is also made in in groups C09D 175/02 and C09D 175/04.