A61K 31/19 Carboxylic acids, e.g. valproic acid (salicylic acid A61K31/60)
Introduced: July 1974
Title
Titles differ between systems:
IPC: Carboxylic acids, e.g. valproic acid
CPC: Carboxylic acids, e.g. valproic acid (salicylic acid A61K31/60)
Full Title
Full titles differ between systems:
Medicinal preparations containing organic active ingredients > Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids > Carboxylic acids, e.g. valproic acid
Medicinal preparations containing organic active ingredients > Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids (hydroxamic acids A61K31/16; peroxy acids A61K31/327) > Carboxylic acids, e.g. valproic acid (salicylic acid A61K31/60)
IPC and CPC are identically structured here. All 5 subcodes exist in both systems.
2 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1974.
Child Classifications
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- A61K 31/191 having two or more hydroxy groups, e.g. gluconic acid since 2000 IPC+CPC Available in IPC and CPC
- A61K 31/192 having aromatic groups, e.g. sulindac, 2-aryl-propionic acids, ethacrynic acid since 2000 IPC+CPC Available in IPC and CPC
- A61K 31/194 having two or more carboxyl groups, e.g. succinic, maleic or phthalic acid since 2000 IPC+CPC Available in IPC and CPC
- A61K 31/20 having a carboxyl group bound to a chain of seven or more carbon atoms, e.g. stearic, palmitic, arachidic acids 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