CHEMICAL FEATURES IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS

Introduced: September 1968

Last revised: July 1974

Classification Context

Section:: TEXTILES; PAPER
Class:: NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
Subclass:: CHEMICAL FEATURES IN THE MANUFACTURE OF MAN-MADE 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.

Related Keywords

manufacture of ARTIFICIAL filaments, threads, fibres, bristles or ribbonsmanufacture of artificial BRISTLE(S)chemical features in the manufacture of artificial FIBRES or filamentsmanufacture of artificial RIBBONSchemical features in the manufacture of artificial SILKsolutionsrecovering materials from WASTE in the manufacture of artificial filaments

8 direct subcodes

Child Classifications

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D01F 1/00 General methods for the manufacture of man-made filaments or the like
D01F 11/00 Chemical after-treatment of man-made filaments or the like during manufacture
D01F 13/00 Recovery of starting material, waste material or solvents during the manufacture of man-made 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 man-made filaments or the like of synthetic polymers; Manufacture thereof
D01F 8/00 Conjugated, i.e. bi- or multicomponent, man-made filaments or the like; Manufacture thereof
D01F 9/00 Man-made 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

NATIONAL DONG HWA UNIVERSITY 1,242
MASCHINENFABRIK RIETER CH 1,162
TORAY INDUSTRIES JP 1,093
TORAY INDUSTRIES 802
JIANGNAN UNIVERSITY 771
WUHAN TEXTILE UNIVERSITY 663
SINOPEC (CHINA PETROCHEMICAL CORPORATION) 653
CHINESE ACADEMY OF SCIENCES 559
LENZING AT 525
MURATA MACHINERY 492