DIFF Subgroup
F04B 53/14 Pistons, piston-rods or piston-rod connections
Introduced: January 1995
Full Title
Full titles differ between systems:
IPC:
Component parts, details or accessories not provided for in, or of interest apart from, groups or > Pistons, piston-rods or piston-rod connections
CPC:
Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00 > Pistons, piston-rods or piston-rod connections
Of 5 combined children, 0 exist in both systems.
5 codes are CPC-only extensions.
Child Classifications
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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