Loading Scheme...
CPC
COOPERATIVE PATENT CLASSIFICATION
D01C
CHEMICAL OR BIOLOGICAL TREATMENT OF NATURAL FILAMENTARY OR FIBROUS MATERIAL TO OBTAIN FILAMENTS OR FIBRES FOR SPINNING; CARBONISING RAGS TO RECOVER ANIMAL FIBRES [2023-01]
NOTE

  • Attention is drawn to the note following the title of Class D01
D01C 1/00
Treatment of vegetable material [2013-01]
D01C 1/02
.
by chemical methods to obtain bast fibres [2017-08]
D01C 1/04
.
Bacteriological retting [2013-01]
D01C 3/00
Treatment of animal material, e.g. chemical scouring of wool [2023-01]
D01C 3/02
.
De-gumming silk [2013-01]
D01C 5/00
Carbonising rags to recover animal fibres [2023-01]