Patent classifications
D
TEXTILES; PAPER
Load children
D21
PAPER-MAKING; PRODUCTION OF CELLULOSE
Load children
D21H
PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
Load children
17/00
Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
Load children Filter patents View analytics View as hierarchy