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DIFF Subgroup
F03D 9/17

storing energy in pressurised fluids

Introduced: January 2016

Full Title

Full titles differ between systems:

IPC:

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 energy in pressurised fluids

CPC:

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 energy in pressurised fluids

No child classifications to compare. This is a leaf node in both IPC and CPC.

Top Applicants

Top Applicants (IPC)

Class F03,2013–2023, worldwide · Source: EPO PATSTAT

  1. VESTAS DK 3,539
  2. WOBBEN PROPERTIES DE 2,922
  3. SIEMENS GAMESA RENEWABLE ENERGY DK 2,747
  4. GE (GENERAL ELECTRIC COMPANY) US 2,356
  5. BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT COMPANY 1,228
  6. SIEMENS DE 886
  7. SGCC(STATE GRID CORPORATION OF CHINA) 831
  8. HUANENG CLEAN ENERGY RESEARCH INSTITUTE 785
  9. MING YANG SMART ENERGY GROUP. 652
  10. LM WIND POWER DK 600

Top Applicants (CPC)

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