DIFF Subgroup
D01D 4/02 Spinnerettes (alloys therefor C22C)
Introduced: January 1980
Title
Titles differ between systems:
IPC: Spinnerettes
CPC: Spinnerettes (alloys therefor C22C)
Full Title
Full titles differ between systems:
IPC:
Spinnerette packs; Cleaning thereof > Spinnerettes
CPC:
Spinnerette packs; Cleaning thereof (, D01D5/24, D01D5/253, D01D5/28 take precedence) > Spinnerettes (alloys therefor C22C)
Of 3 combined children, 0 exist in both systems.
3 codes are CPC-only extensions.
Child Classifications
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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