CPC Subgroup
A61K 31/47 Quinolines; Isoquinolines
Full Title
Medicinal preparations containing organic active ingredients > Heterocyclic compounds > having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins > having six-membered rings with one nitrogen as the only ring hetero atom > Quinolines; Isoquinolines
12 direct subcodes
Child Classifications
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- A61K 31/4704 2-Quinolinones, e.g. carbostyril
- A61K 31/4706 4-Aminoquinolines; 8-Aminoquinolines, e.g. chloroquine, primaquine
- A61K 31/4709 Non-condensed quinolines and containing further heterocyclic rings
- A61K 31/472 Non-condensed isoquinolines, e.g. papaverine
- A61K 31/473 ortho- or peri-condensed with carbocyclic ring systems, e.g. acridines, phenanthridines
- A61K 31/4738 ortho- or peri-condensed with heterocyclic ring systems
- A61K 31/4747 spiro-condensed
- A61K 31/4748 forming part of bridged ring systems (strychnine A61K31/475; morphinan derivatives A61K31/485)
- A61K 31/475 having an indole ring, e.g. yohimbine, reserpine, strychnine, vinblastine (vincamine A61K31/4375)
- A61K 31/48 Ergoline derivatives, e.g. lysergic acid, ergotamine
- A61K 31/485 Morphinan derivatives, e.g. morphine, codeine
- A61K 31/49 Cinchonan derivatives, e.g. quinine
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