A61K 31/17 having the group >N—C(O)—N< or >N—C(S)—N<, e.g. urea, thiourea, carmustine (isoureas, isothioureas A61K31/155; sulfonylureas A61K31/64)
Introduced: July 1974
Title
Titles differ between systems:
IPC: having the group N—C(O)—N or N—C(S)—N, e.g. urea, thiourea, carmustine
CPC: having the group >N—C(O)—N< or >N—C(S)—N<, e.g. urea, thiourea, carmustine (isoureas, isothioureas A61K31/155; sulfonylureas A61K31/64)
Full Title
Full titles differ between systems:
Medicinal preparations containing organic active ingredients > Amides, e.g. hydroxamic acids > having the group N—C(O)—N or N—C(S)—N, e.g. urea, thiourea, carmustine
Medicinal preparations containing organic active ingredients > Amides, e.g. hydroxamic acids > having the group >N—C(O)—N< or >N—C(S)—N<, e.g. urea, thiourea, carmustine (isoureas, isothioureas A61K31/155; sulfonylureas A61K31/64)
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1974.
Child Classifications
Navigate with arrow keys, Enter to open
- A61K 31/175 having the group [IMAGE cpc-sch-A61K-0950.gif] , >N—C(O)—N=N— or[IMAGE cpc-sch-A61K-0951.gif] , e.g. carbonohydrazides, carbazones, semicarbazides, semicarbazones; Thioanalogues thereof since 1974 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