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PCE
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CPC Subgroup
F03C 1/053

the pistons co-operating with an actuated element at the inner ends of the cylinders

Full Title

Reciprocating-piston liquid engines > with multiple-cylinders, characterised by the number or arrangement of cylinders (with movable cylinders F03C1/22; of flexible-wall type F03C7/00) > with cylinders in star or fan arrangement > the pistons co-operating with an actuated element at the inner ends of the cylinders

3 direct subcodes

Child Classifications

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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