Skip to content
Search Classifications
Search for IPC and CPC classification codes or keywords
IPC Subgroup
A61K 31/2

having a carboxyl group bound to an acyclic chain of seven or more carbon atoms, e.g. stearic, palmitic or arachidic acid

Introduced: July 1974

Last revised: January 2006

Full Title

Medicinal preparations containing organic active ingredients > Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids > Carboxylic acids, e.g. valproic acid > having a carboxyl group bound to an acyclic chain of seven or more carbon atoms, e.g. stearic, palmitic or arachidic acid

Classification Context

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

3 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

  • A61K 31/201 having one or two double bonds, e.g. oleic or linoleic acid
  • A61K 31/202 having three or more double bonds, e.g. linolenic acid
  • A61K 31/203 Retinoic acids

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