A61K 31/435 having six-membered rings with one nitrogen as the only ring hetero atom
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
Filing statistics
CPC A61K 31/435 belongs to the parent subclass A61K, which recorded 1,717,491 patent applications worldwide between 2013 and 2023. Annual filings grew from 114,681 in 2013 to 125,843 in 2023 (+10%), peaking at 182,901 applications in 2016. The most active applicants in class A61 are PHILIPS ELECTRONICS (20,621 applications), NOVARTIS (15,792 applications) and ROCHE (14,303 applications).
Source: EPO PATSTAT, worldwide filings
7 direct subcodes
Child Classifications
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- A61K 31/4353 ortho- or peri-condensed with heterocyclic ring systems
- A61K 31/438 The ring being spiro-condensed with carbocyclic or heterocyclic ring systems
- A61K 31/439 the ring forming part of a bridged ring system, e.g. quinuclidine (8-azabicyclo [3.2.1] octanes A61K31/46)
- A61K 31/44 Non condensed pyridines; Hydrogenated derivatives thereof
- A61K 31/46 8-Azabicyclo [3.2.1] octane; Derivatives thereof, e.g. atropine, cocaine
- A61K 31/465 Nicotine; Derivatives thereof
- A61K 31/47 Quinolines; Isoquinolines
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