WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

C08H　DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS (polysaccharides C08B; natural rubber C08C; natural resins or their derivatives C09F ; bituminous materials C10)

C08H 1/00 Macromolecular products derived from proteins (food proteins A23; glue, gelatine C09H)

C08H 1/02 ・Protein-aldehyde condensates

C08H 1/04 ・・Casein-aldehyde condensates

C08H 1/06 ・derived from horn, hoofs, hair, skin or leather

C08H 3/00 Vulcanised oils, e.g. factice

C08H 6/00 Macromolecular compounds derived from lignin, {e.g. tannins, humic acids}

C08H 8/00 Macromolecular compounds derived from lignocellulosic materials {(pretreatment thereof B27N)}

C08H 99/00 Subject matter not provided for in other groups of this subclass, {e.g. flours, kernels}