CPC Main Group
F04D 1/00 Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (adapted for pumping specific fluids F04D7/00; priming or boosting F04D9/00)
7 direct subcodes
Child Classifications
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- F04D 1/02 having non-centrifugal stages, e.g. centripetal
- F04D 1/04 Helico-centrifugal pumps
- F04D 1/06 Multi-stage pumps (F04D1/02, F04D13/10 take precedence)
- F04D 1/12 Pumps with scoops or like paring members protruding in the fluid circulating in a bowl
- F04D 1/14 Pumps raising fluids by centrifugal force within a conical rotary bowl with vertical axis
Top Applicants
Top 10 applicants by patent filingsfor class F04, 2013–2023, worldwide · Source: EPO PATSTAT
- LG ELECTRONICS KR 3,855
- ROBERT BOSCH DE 3,549
- GREE ELECTRIC APPLIANCES 2,273
- GE (GENERAL ELECTRIC COMPANY) US 2,126
- MITSUBISHI ELECTRIC CORPORATION JP 1,881
- UNITED TECHNOLOGIES CORPORATION (UTC) US 1,866
- SAFRAN AIRCRAFT ENGINES FR 1,499
- MITSUBISHI HEAVY INDUSTRIES JP 1,258
- TOYOTA INDUSTRIES CORPORATION JP 1,247
- ATLAS COPCO AIRPOWER BE 1,168