(under subclass 1) Processes which include the liberation, recovery and/or purification of animal fibers.
SEE OR SEARCH THIS CLASS, SUBCLASS:
143+, and 151, for processes of depositing fibrous products from waterlaying a liquid suspension which include animal fibers, and the products of such processes.
SEE OR SEARCH CLASS
8, Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers,
94.1+, for fluid or chemical treatment of hides, skins, feathers and animal tissues, not otherwise provided for, subclass 127.5 for processes of chemically modifying proteinaceous fibers, and subclass 138 for processes for fluid or chemical treatment of silk for the removal of servicing, or other naturally occurring gum or wax. Processes classifiable in this subclass (2) generally include the production of a fiber pulp from a raw proteinaceous fibrous material, (e.g., leather).
260, Chemistry of Carbon Compounds, 112+, for proteins and reaction products thereof.
435, Chemistry: Molecular Biology and Microbiology,
251, and 252 for processes of liberation or purification of silk, keratins or protein involving fermentation.
