D01F CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
Description
D01F covers chemical aspects and specialized apparatus involved in producing synthetic filaments, threads, fibers, bristles, and ribbons through man-made processes. This includes chemical composition of spinning solutions, coagulation baths, chemical treatments during fiber formation, and equipment designed specifically for carbon filament production. The classification addresses both the chemical formulations and specialized machinery required for synthetic fiber manufacturing, distinguishing it from mechanical spinning processes covered elsewhere in D01. Adjacent classes handle natural fiber processing and general mechanical aspects of spinning operations.
8 direct subcodes
Child Classifications
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- D01F 1/00 General methods for the manufacture of artificial filaments or the like
- D01F 11/00 Chemical after-treatment of artificial filaments or the like during manufacture
- D01F 13/00 Recovery of starting material, waste material or solvents during the manufacture of artificial filaments or the like
- D01F 2/00 Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F 4/00 Monocomponent artificial filaments or the like of proteins; Manufacture thereof
- D01F 6/00 Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F 8/00 Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F 9/00 Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
Top Applicants
Top 10 applicants by patent filingsfor class D01, 2013–2023, worldwide · Source: EPO PATSTAT
- TORAY INDUSTRIES JP 1,268
- MASCHINENFABRIK RIETER CH 1,200
- NATIONAL DONG HWA UNIVERSITY 955
- LENZING AT 602
- P&G (PROCTER & GAMBLE COMPANY) US 594
- WUHAN TEXTILE UNIVERSITY 494
- TRUETZSCHLER & COMPANY DE 453
- KOLON INDUSTRIES KR 433
- OERLIKON TEXTILE & COMPANY DE 430
- CHINESE ACADEMY OF SCIENCES 412