Heavy metals; Compounds thereof

Introduced: July 1974

Last revised: January 2019

Full Title

Medicinal preparations containing inorganic active ingredients > Heavy metals; Compounds thereof

Classification Context

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

Filing statistics

IPC A61K 33/24 belongs to the parent subclass A61K, which recorded 1,792,627 patent applications worldwide between 2013 and 2023. Annual filings declined from 147,606 in 2013 to 132,650 in 2023 (-10%), peaking at 177,518 applications in 2016. The most active applicants in class A61 are PHILIPS ELECTRONICS (18,523 applications), NOVARTIS (14,253 applications) and COVIDIEN (13,953 applications).

Source: EPO PATSTAT, worldwide filings

12 direct subcodes

Child Classifications

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A61K 33/241 Lead; Compounds thereof
A61K 33/242 Gold; Compounds thereof
A61K 33/243 Platinum; Compounds thereof
A61K 33/244 Lanthanides; Compounds thereof
A61K 33/245 Bismuth; Compounds thereof
A61K 33/26 Iron; Compounds thereof
A61K 33/28 Mercury; Compounds thereof
A61K 33/3 Zinc; Compounds thereof
A61K 33/32 Manganese; Compounds thereof
A61K 33/34 Copper; Compounds thereof
A61K 33/36 Arsenic; Compounds thereof
A61K 33/38 Silver; Compounds thereof

Top Applicants

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

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