D01F 9/12 Carbon filaments; Apparatus specially adapted for the manufacture thereof
Introduced: July 1974
Full Title
Full titles differ between systems:
Man-made filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments > of inorganic material > Carbon filaments; Apparatus specially adapted for the manufacture thereof
Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments > of inorganic material (working or processing of metal wire B21F; from softened glass, minerals or slags C03B37/00) > Carbon filaments; Apparatus specially adapted for the manufacture thereof
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
IPC defines codes here since 1974.
Child Classifications
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- D01F 9/127 by thermal decomposition of hydrocarbon gases or vapours since 1990 +5 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