A61C 1/18 Flexible shafts; Clutches or the like; (flexible shafts in general F16C; clutches in general F16D)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Flexible shafts; Clutches or the like
CPC: Flexible shafts; Clutches or the like; (flexible shafts in general F16C; clutches in general F16D)
Full Title
Full titles differ between systems:
Dental machines for boring or cutting > Machine parts specially adapted for dentistry > Flexible shafts; Clutches or the like
Dental machines for boring or cutting > Machine parts specially adapted for dentistry > Flexible shafts; Clutches or the like; (flexible shafts in general F16C; clutches in general F16D)
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 A61,2013–2023, worldwide · Source: EPO PATSTAT
- PHILIPS ELECTRONICS NL 18,523
- NOVARTIS CH 14,253
- COVIDIEN US 13,953
- ROCHE CH 12,005
- CHINESE ACADEMY OF SCIENCES 11,955
- UNIVERSITY OF CALIFORNIA US 11,692
- HARVARD UNIVERSITY US 11,596
- L'OREAL FR 11,593
- P&G (PROCTER & GAMBLE COMPANY) US 11,297
- OLYMPUS CORPORATION JP 9,594
Top Applicants (CPC)
Class A61,2013–2023, worldwide · Source: EPO PATSTAT
- PHILIPS ELECTRONICS NL 20,621
- NOVARTIS CH 15,792
- ROCHE CH 14,303
- COVIDIEN US 13,862
- HARVARD UNIVERSITY US 13,454
- UNIVERSITY OF CALIFORNIA US 12,798
- P&G (PROCTER & GAMBLE COMPANY) US 12,140
- L'OREAL FR 11,800
- OLYMPUS CORPORATION JP 9,894
- BOSTON SCIENTIFIC SCIMED US 9,513