A61K 31/445 Non condensed piperidines, e.g. piperocaine
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 > Non condensed pyridines; Hydrogenated derivatives thereof > Non condensed piperidines, e.g. piperocaine
Filing statistics
CPC A61K 31/445 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
10 direct subcodes
Child Classifications
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- A61K 31/4453 only substituted in position 1, e.g. propipocaine, diperodon
- A61K 31/4458 only substituted in position 2, e.g. methylphenidate
- A61K 31/4462 only substituted in position 3
- A61K 31/4465 only substituted in position 4
- A61K 31/4468 having a nitrogen directly attached in position 4, e.g. clebopride, fentanyl
- A61K 31/45 having oxo groups directly attached to the heterocyclic ring, e.g. cycloheximide
- A61K 31/451 having a carbocyclic group directly attached to the heterocyclic ring, e.g. glutethimide, meperidine, loperamide, phencyclidine, piminodine
- A61K 31/4515 having a butyrophenone group in position 1, e.g. haloperidol (pipamperone A61K31/4545)
- A61K 31/452 Piperidinium derivatives (pancuronium A61K31/58)
- A61K 31/4523 containing further heterocyclic ring systems
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