CPC Subgroup
F03C 1/0076 Full Title
Reciprocating-piston liquid engines > with single cylinder, double-acting piston
Filing statistics
CPC F03C 1/0076 belongs to the parent subclass F03C, which recorded 3,545 patent applications worldwide between 2013 and 2023. Annual filings declined from 328 in 2013 to 236 in 2023 (-28%), peaking at 441 applications in 2014. The most active applicants in class F03 are VESTAS (3,718 applications), WOBBEN PROPERTIES (3,602 applications) and SIEMENS GAMESA RENEWABLE ENERGY (3,016 applications).
Source: EPO PATSTAT, worldwide filings
Top Applicants
Top 10 applicants by patent filingsfor class F03, 2013–2023, worldwide · Source: EPO PATSTAT
- VESTAS DK 3,718
- WOBBEN PROPERTIES DE 3,602
- SIEMENS GAMESA RENEWABLE ENERGY DK 3,016
- GE (GENERAL ELECTRIC COMPANY) US 2,594
- SIEMENS DE 1,082
- BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT COMPANY 709
- LM WIND POWER DK 671
- WOBBEN PROPERTIES 660
- SENVION DE 555
- BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT COMPANY CN 536