A61L 27/50 Materials characterised by their function or physical properties
Introduced: January 2000
Full Title
Full titles differ between systems:
Materials for prostheses or for coating prostheses > Materials characterised by their function or physical properties
Materials for prostheses or for coating prostheses (dental prostheses A61C13/00; shape or structure of prostheses A61F2/00; use of preparations for artificial teeth A61K6/80; artificial kidneys A61M1/14) > Materials characterised by their function or physical properties
Of 8 combined children, 5 exist in both systems.
3 codes are CPC-only extensions.
1 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 2000.
Child Classifications
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- A61L 27/54 Biologically active materials, e.g. therapeutic substances since 2000 IPC+CPC Available in IPC and CPC
- A61L 27/58 Materials at least partially resorbable by the body since 2000 IPC+CPC Available in IPC and CPC
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