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CPC Subgroup
F03D 9/10

Combinations of wind motors with apparatus storing energy

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) > Combinations of wind motors with apparatus storing energy

Filing statistics

CPC F03D 9/10 belongs to the parent subclass F03D, which recorded 80,246 patent applications worldwide between 2013 and 2023. Annual filings grew from 6,354 in 2013 to 7,210 in 2023 (+13%), peaking at 8,699 applications in 2018. 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

6 direct subcodes

Child Classifications

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  • F03D 9/11 storing electrical energy
  • F03D 9/12 storing kinetic energy, e.g. using flywheels
  • F03D 9/17 storing energy in pressurised fluids
  • F03D 9/18 storing heat
  • F03D 9/19 storing chemical energy, e.g. using electrolysis

Top Applicants

Top 10 applicants by patent filingsfor class F03, 2013–2023, worldwide · Source: EPO PATSTAT

  1. VESTAS DK 3,718
  2. WOBBEN PROPERTIES DE 3,602
  3. SIEMENS GAMESA RENEWABLE ENERGY DK 3,016
  4. GE (GENERAL ELECTRIC COMPANY) US 2,594
  5. SIEMENS DE 1,082
  6. BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT COMPANY 709
  7. LM WIND POWER DK 671
  8. WOBBEN PROPERTIES 660
  9. SENVION DE 555
  10. BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT COMPANY CN 536