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IPC Subgroup
A61K 31/47

Quinolines; Isoquinolines

Introduced: July 1974

Last revised: January 2006

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

Classification Context

Section:
HUMAN NECESSITIES
Class:
MEDICAL OR VETERINARY SCIENCE; HYGIENE
Subclass:
PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES

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 containing further heterocyclic rings
  • A61K 31/473 ortho- or peri-condensed with carbocyclic ring systems, e.g. acridines, phenanthridines
  • A61K 31/4747 spiro-condensed
  • A61K 31/4748 forming part of bridged ring systems
  • A61K 31/475 having an indole ring, e.g. yohimbine, reserpine, strychnine, vinblastine
  • 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

  1. PHILIPS ELECTRONICS NL 18,523
  2. NOVARTIS CH 14,253
  3. COVIDIEN US 13,953
  4. ROCHE CH 12,005
  5. CHINESE ACADEMY OF SCIENCES 11,955
  6. UNIVERSITY OF CALIFORNIA US 11,692
  7. HARVARD UNIVERSITY US 11,596
  8. L'OREAL FR 11,593
  9. P&G (PROCTER & GAMBLE COMPANY) US 11,297
  10. OLYMPUS CORPORATION JP 9,594