A61K 31/59 Compounds containing 9, 10- seco- cyclopenta[a]hydrophenanthrene ring systems
Introduced: July 1974
Title
Titles differ between systems:
IPC: Compounds containing 9,10-seco-cyclopenta[a]hydro- phenanthrene ring systems
CPC: Compounds containing 9, 10- seco- cyclopenta[a]hydrophenanthrene ring systems
Full Title
Full titles differ between systems:
Medicinal preparations containing organic active ingredients > Compounds containing 9,10-seco-cyclopenta[a]hydro- phenanthrene ring systems
Medicinal preparations containing organic active ingredients > Compounds containing 9, 10- seco- cyclopenta[a]hydrophenanthrene ring systems
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
2 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 2000.
Child Classifications
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- A61K 31/592 9,10-Secoergostane derivatives, e.g. ergocalciferol, i.e. vitamin D2 since 2000 IPC+CPC Available in IPC and CPC
- A61K 31/593 9,10-Secocholestane derivatives, e.g. cholecalciferol, i.e. vitamin D3 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