CPC Subgroup Additional Only
A61H 2201/0221 Mechanism for heating or cooling
Full Title
Characteristics of apparatus not provided for in the preceding codes > heated or cooled > Mechanism for heating or cooling
8 direct subcodes
Child Classifications
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- A61H 2201/0228 heated by an electric resistance element
- A61H 2201/0242 by a fluid circulating in the apparatus
- A61H 2201/025 by direct air flow on the patient's body
- A61H 2201/0257 by a heat accumulator, e.g. a sand or liquid reservoir
- A61H 2201/0264 using heat exchanger, e.g. between fresh and used fluids
- A61H 2201/0278 by chemical reaction
- A61H 2201/0285 with Peltier elements
- A61H 2201/0292 with microwaves
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