CPC Subgroup
F04C 27/005 Full Title
Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
Filing statistics
CPC F04C 27/005 belongs to the parent subclass F04C, which recorded 51,252 patent applications worldwide between 2013 and 2023. Annual filings declined from 6,720 in 2013 to 3,771 in 2023 (-44%). The most active applicants in class F04 are LG ELECTRONICS (3,855 applications), ROBERT BOSCH (3,549 applications) and GREE ELECTRIC APPLIANCES (2,273 applications).
Source: EPO PATSTAT, worldwide filings
1 direct subcode
Child Classifications
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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