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CPC Subgroup
F02K 9/10

Shape or structure of solid propellant charges

Full Title

Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof > using solid propellants (F02K9/72 takes precedence; using semi-solid or pulverulent propellants F02K9/70) > Shape or structure of solid propellant charges

6 direct subcodes

Child Classifications

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  • F02K 9/12 made of two or more portions burning at different rates
  • F02K 9/14 made from sheet-like materials, e.g. of carpet-roll type, of layered structure
  • F02K 9/16 of honeycomb structure
  • F02K 9/18 of the internal-burning type having a star or like shaped internal cavity
  • F02K 9/20 of the external-burning type
  • F02K 9/22 of the front-burning type

Top Applicants

Top 10 applicants by patent filingsfor class F02, 2013–2023, worldwide · Source: EPO PATSTAT

  1. ROBERT BOSCH DE 8,801
  2. FORD GLOBAL TECHNOLOGIES US 8,171
  3. GE (GENERAL ELECTRIC COMPANY) US 6,957
  4. HYUNDAI MOTOR COMPANY KR 5,390
  5. UNITED TECHNOLOGIES CORPORATION (UTC) US 5,250
  6. TOYOTA MOTOR CORPORATION JP 5,214
  7. TOYOTA MOTOR CORPORATION 4,149
  8. DENSO CORPORATION JP 3,400
  9. KIA MOTORS CORPORATION KR 3,388
  10. SAFRAN AIRCRAFT ENGINES FR 3,332