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Outline
Indent Level
Color Curly Brackets (indicating CPC extensions to IPC)

CPC
COOPERATIVE PATENT CLASSIFICATION
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DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS (polysaccharides C08B; natural rubber C08C; natural resins or their derivatives C09F ; bituminous materials C10)
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Guide Heading:
Preparation
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Macromolecular products derived from proteins (food proteins A23; glue, gelatine C09H)
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C08H 1/02
.
Protein-aldehyde condensates
C08H 1/04
. .
Casein-aldehyde condensates
C08H 1/06
.
derived from horn, hoofs, hair, skin or leather
Vulcanised oils, e.g. factice
Macromolecular compounds derived from lignin,
{
e.g. tannins, humic acids
}
NOTE
-
Attention is drawn to the following place, which could be of interest for search: - Lignin or lignin derivatives, C07G 1/00]

Macromolecular compounds derived from lignocellulosic materials
{
(pretreatment thereof B27N)
}
Subject matter not provided for in other groups of this subclass,
{
e.g. flours, kernels
}
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013