CPC Subgroup
F03B 3/04 with substantially axial flow throughout rotors, e.g. propeller turbines
Full Title
Machines or engines of reaction type; Parts or details peculiar thereto > with substantially axial flow throughout rotors, e.g. propeller turbines
1 direct subcode
Child Classifications
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- F03B 3/06 with adjustable blades, e.g. Kaplan turbines
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