F03D 3/04 having stationary wind-guiding means, e.g. with shrouds or channels (F03D9/35 takes precedence)
Introduced: September 1968
Title
Titles differ between systems:
IPC: having stationary wind-guiding means, e.g. with shrouds or channels
CPC: having stationary wind-guiding means, e.g. with shrouds or channels (F03D9/35 takes precedence)
Full Title
Full titles differ between systems:
Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor > having stationary wind-guiding means, e.g. with shrouds or channels
Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor (controlling thereof F03D7/06) > having stationary wind-guiding means, e.g. with shrouds or channels (F03D9/35 takes precedence)
Of 3 combined children, 0 exist in both systems.
3 codes are CPC-only extensions.
Child Classifications
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Top Applicants
Top Applicants (IPC)
Class F03,2013–2023, worldwide · Source: EPO PATSTAT
- VESTAS DK 3,539
- WOBBEN PROPERTIES DE 2,922
- SIEMENS GAMESA RENEWABLE ENERGY DK 2,747
- GE (GENERAL ELECTRIC COMPANY) US 2,356
- BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT COMPANY 1,228
- SIEMENS DE 886
- SGCC(STATE GRID CORPORATION OF CHINA) 831
- HUANENG CLEAN ENERGY RESEARCH INSTITUTE 785
- MING YANG SMART ENERGY GROUP. 652
- LM WIND POWER DK 600
Top Applicants (CPC)
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