F03D 9/13 storing gravitational potential energy
Introduced: January 2016
Full Title
Full titles differ between systems:
Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations > Combinations of wind motors with apparatus storing energy > storing gravitational potential energy
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) > Combinations of wind motors with apparatus storing energy > storing gravitational potential energy
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
IPC defines codes here since 2016.
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