DIFF Main Group
D01D 5/00 Formation of filaments, threads, or the like
Introduced: September 1968
Of 17 combined children, 16 exist in both systems.
1 codes are CPC-only extensions.
6 shared codes have differing titles between IPC and CPC.
Child Classifications
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- D01D 5/12 Stretch-spinning methods ( finishing by stretching D02J1/22) IPC+CPC Available in IPC and CPC
- D01D 5/22 with a crimped or curled structure; with a special structure to simulate wool (producing crimped or curled effects in filaments or threads after formation D02G1/00) IPC+CPC Available in IPC and CPC
- D01D 5/24 with a hollow structure; Spinnerette packs therefor (D01D5/38 takes precedence; producing tubes of plastic material B29D; addition of agents forming hollow filaments D01F1/08) IPC+CPC Available in IPC and CPC
- D01D 5/253 with a non-circular cross section; Spinnerette packs therefor (D01D5/38 takes precedence) since 1980 IPC+CPC Available in IPC and CPC
- D01D 5/28 while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor IPC+CPC Available in IPC and CPC
- D01D 5/38 Formation of filaments, threads, or the like during polymerisation since 1980 IPC+CPC Available in IPC and CPC
- D01D 5/40 by applying a shearing force to a dispersion or solution of filament formable polymers, e.g. by stirring since 1980 IPC+CPC Available in IPC and CPC
- D01D 5/42 by cutting films into narrow ribbons or filaments or by fibrillation of films since 1980 +2 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
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
Top Applicants (CPC)
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