CPC Subgroup
A61K 31/13 Amines
Full Title
Medicinal preparations containing organic active ingredients > Amines
8 direct subcodes
Child Classifications
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- A61K 31/131 acyclic
- A61K 31/132 having two or more amino groups, e.g. spermidine, putrescine
- A61K 31/133 having hydroxy groups, e.g. sphingosine
- A61K 31/135 having aromatic rings
- A61K 31/14 Quaternary ammonium compounds, e.g. edrophonium, choline (betaines A61K31/205)
- A61K 31/145 having sulfur, e.g. thiurams (>N—C(S)—S—C(S)—N< and >N—C(S)—S—S—C(S)—N<), Sulfinylamines (—N=SO), Sulfonylamines (—N=SO2) (isothiourea A61K31/155)
- A61K 31/15 Oximes (>C=N—O—); Hydrazines (>N—N<); Hydrazones (>N—N=)
- A61K 31/155 Amidines ([IMAGE cpc-sch-A61K-1029.gif]), e.g. guanidine (H2N—C(=NH)—NH2), isourea (N=C(OH)—NH2), isothiourea (—N=C(SH)—NH2)
Top Applicants
Top 10 applicants by patent filingsfor 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