CPC Subgroup
A61K 31/135 having aromatic rings
Full Title
Medicinal preparations containing organic active ingredients > Amines > having aromatic rings
3 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- A61K 31/136 having the amino group directly attached to the aromatic ring, e.g. benzeneamine
- A61K 31/137 Arylalkylamines, e.g. amphetamine, epinephrine, salbutamol, ephedrine
- A61K 31/138 Aryloxyalkylamines, e.g. propranolol, tamoxifen, phenoxybenzamine (atenolol A61K31/165; pindolol A61K31/404; timolol A61K31/5377)
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