CPC Subgroup
F03D 9/35 within towers, e.g. using chimney effects
Full Title
Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations (hybrid wind-photovoltaic energy systems for the generation of electric power H02S10/12) > Wind motors specially adapted for installation in particular locations (means for mounting or supporting wind motors F03D13/20) > on stationary objects or on stationary man-made structures > within towers, e.g. using chimney effects
1 direct subcode
Child Classifications
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- F03D 9/37 with means for enhancing the air flow within the tower, e.g. by heating
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