CPC Subgroup
A61K 31/28 Compounds containing heavy metals
Full Title
Medicinal preparations containing organic active ingredients > Compounds containing heavy metals
8 direct subcodes
Child Classifications
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- A61K 31/282 Platinum compounds
- A61K 31/285 Arsenic compounds
- A61K 31/29 Antimony or bismuth compounds
- A61K 31/295 Iron group metal compounds
- A61K 31/30 Copper compounds
- A61K 31/305 Mercury compounds
- A61K 31/315 Zinc compounds
- A61K 31/32 Tin compounds
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