DIFF Subgroup
F02K 9/10 Shape or structure of solid propellant charges
Introduced: January 1980
Full Title
Full titles differ between systems:
IPC:
Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof > using solid propellants > Shape or structure of solid propellant charges
CPC:
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
IPC and CPC are identically structured here. All 6 subcodes exist in both systems.
IPC defines codes here since 1980.
Child Classifications
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- F02K 9/12 made of two or more portions burning at different rates since 1980 IPC+CPC Available in IPC and CPC
- F02K 9/14 made from sheet-like materials, e.g. of carpet-roll type, of layered structure since 1980 IPC+CPC Available in IPC and CPC
- F02K 9/18 of the internal-burning type having a star or like shaped internal cavity since 1980 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class F02,2013–2023, worldwide · Source: EPO PATSTAT
- TOYOTA MOTOR CORPORATION 8,687
- ROBERT BOSCH DE 8,328
- FORD GLOBAL TECHNOLOGIES US 7,423
- GE (GENERAL ELECTRIC COMPANY) US 5,732
- UNITED TECHNOLOGIES CORPORATION (UTC) US 5,592
- HYUNDAI MOTOR COMPANY KR 4,699
- TOYOTA MOTOR CORPORATION JP 4,541
- DENSO CORPORATION 3,711
- WEICHAI POWER COMPANY 3,486
- SAFRAN AIRCRAFT ENGINES FR 3,249
Top Applicants (CPC)
Class F02,2013–2023, worldwide · Source: EPO PATSTAT
- ROBERT BOSCH DE 8,801
- FORD GLOBAL TECHNOLOGIES US 8,171
- GE (GENERAL ELECTRIC COMPANY) US 6,957
- HYUNDAI MOTOR COMPANY KR 5,390
- UNITED TECHNOLOGIES CORPORATION (UTC) US 5,250
- TOYOTA MOTOR CORPORATION JP 5,214
- TOYOTA MOTOR CORPORATION 4,149
- DENSO CORPORATION JP 3,400
- KIA MOTORS CORPORATION KR 3,388
- SAFRAN AIRCRAFT ENGINES FR 3,332