F04C 2/30 having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
Introduced: January 1980
Title
Titles differ between systems:
IPC: having the characteristics covered by two or more of groups , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
CPC: having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
Full Title
Full titles differ between systems:
Rotary-piston machines or pumps > having the characteristics covered by two or more of groups , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
Rotary-piston machines or pumps (with non-parallel axes of co-operating members F04C3/00; with the working-chamber walls at least partly resiliently deformable F04C5/00; with fluid ring or the like F04C7/00; rotary-piston pumps specially adapted for elastic fluids F04C18/00; rotary-piston machines or pumps in which the working-fluid is exclusively displaced by, or exclusively displaces, one or more reciprocating pistons F04B) > having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
IPC and CPC are identically structured here. All 5 subcodes exist in both systems.
5 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1980.
Child Classifications
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- F04C 2/32 having both the movement defined in groups F04C2/02 and relative reciprocation between co-operating members since 1980 +2 CPC IPC+CPC Available in IPC and CPC
- F04C 2/34 having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members since 1980 IPC+CPC Available in IPC and CPC
- F04C 2/36 having both the movements defined in groups F04C2/22 and F04C2/24 since 1980 IPC+CPC Available in IPC and CPC
- F04C 2/38 having the movement defined in group F04C2/02 and having a hinged member (F04C2/32 takes precedence) since 1980 IPC+CPC Available in IPC and CPC
- F04C 2/40 having the movement defined in group F04C2/08 or F04C2/22 and having a hinged member since 1980 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class F04,2013–2023, worldwide · Source: EPO PATSTAT
- GREE ELECTRIC APPLIANCES 5,351
- LG ELECTRONICS KR 3,502
- ROBERT BOSCH DE 3,011
- MIDEA 2,258
- MITSUBISHI ELECTRIC CORPORATION JP 1,663
- ZHUHAI LANDA COMPRESSOR COMPANY 1,639
- GREE ELECTRIC APPLIANCES, INC.OF ZHUHAI 1,573
- ZHUHAI GREE ENERGY-SAVING REFRIGERATION TECHNOLOGY RESEARCH CENTER COMPANY 1,536
- TOYOTA INDUSTRIES CORPORATION 1,347
- DAIKIN INDUSTRIES 1,325
Top Applicants (CPC)
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