CPC Main Group
A61H 33/00 Bathing devices for special therapeutic or hygienic purposes (A61H35/00 takes precedence; for sub aquatic intestinal cleaning A61M9/00; electric or magnetic baths, applying ionised fluids A61N1/44 )
Filing statistics
CPC A61H 33/00 belongs to the parent subclass A61H, which recorded 108,216 patent applications worldwide between 2013 and 2023. Annual filings grew from 4,798 in 2013 to 8,885 in 2023 (+85%), peaking at 13,817 applications in 2020. The most active applicants in class A61 are PHILIPS ELECTRONICS (20,621 applications), NOVARTIS (15,792 applications) and ROCHE (14,303 applications).
Source: EPO PATSTAT, worldwide filings
13 direct subcodes
Child Classifications
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- A61H 33/02 Bathing devices for use with gas-containing liquid, or liquid in which gas is led or generated, e.g. carbon dioxide baths
- A61H 33/04 Appliances for sand, mud or foam baths; Appliances for metal baths, e.g. using metal salt solutions
- A61H 33/06 Artificial hot-air or cold-air baths; Steam or gas baths or douches, e.g. sauna or Finnish baths
- A61H 33/14 Devices for gas baths with ozone, hydrogen, or the like (production of ozone or hydrogen C01B, C25B1/02)
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