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CPC Subgroup
A61K 31/22

of acyclic acids, e.g. pravastatin

Full Title

Medicinal preparations containing organic active ingredients > Esters, e.g. nitroglycerine, selenocyanates > of carboxylic acids > of acyclic acids, e.g. pravastatin

5 direct subcodes

Child Classifications

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  • A61K 31/221 with compounds having an amino group, e.g. acetylcholine, acetylcarnitine
  • A61K 31/222 with compounds having aromatic groups, e.g. dipivefrine, ibopamine
  • A61K 31/223 of alpha-aminoacids
  • A61K 31/225 Polycarboxylic acids

Top Applicants

Top 10 applicants by patent filingsfor class A61, 2013–2023, worldwide · Source: EPO PATSTAT

  1. PHILIPS ELECTRONICS NL 20,621
  2. NOVARTIS CH 15,792
  3. ROCHE CH 14,303
  4. COVIDIEN US 13,862
  5. HARVARD UNIVERSITY US 13,454
  6. UNIVERSITY OF CALIFORNIA US 12,798
  7. P&G (PROCTER & GAMBLE COMPANY) US 12,140
  8. L'OREAL FR 11,800
  9. OLYMPUS CORPORATION JP 9,894
  10. BOSTON SCIENTIFIC SCIMED US 9,513