containing ingredients of undetermined constitution or reaction products thereof

Introduced: January 2000

Full Title

Full titles differ between systems:

IPC:

Materials for prostheses or for coating prostheses > containing ingredients of undetermined constitution or reaction products thereof

CPC:

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) > containing ingredients of undetermined constitution or reaction products thereof

CPC subdivides this area 5x more granularly than IPC with 4 additional codes.

4 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 27/3604 +7 CPC CPC only CPC only
A61L 27/3637 CPC only CPC only
A61L 27/3641 +5 CPC CPC only CPC only
A61L 27/3683 +3 CPC CPC only CPC only
A61L 27/38 since 2000 +4 CPC 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