having a turbine driving a compressor (power transmission arrangements F02C7/36; control of working fluid flow F02C9/16)

Full Title

Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C5/00) > having a turbine driving a compressor (power transmission arrangements F02C7/36; control of working fluid flow F02C9/16)

Filing statistics

CPC F02C 3/04 belongs to the parent subclass F02C, which recorded 72,456 patent applications worldwide between 2013 and 2023. Annual filings declined from 6,952 in 2013 to 5,433 in 2023 (-22%), peaking at 7,765 applications in 2016. The most active applicants in class F02 are ROBERT BOSCH (8,801 applications), FORD GLOBAL TECHNOLOGIES (8,171 applications) and GE (GENERAL ELECTRIC COMPANY) (6,957 applications).

Source: EPO PATSTAT, worldwide filings

7 direct subcodes

Child Classifications

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F02C 3/045 having compressor and turbine passages in a single rotor-module (F02C3/073 takes precedence)
F02C 3/055 the compressor being of the positive-displacement type
F02C 3/06 the compressor comprising only axial stages (F02C3/10 takes precedence)
F02C 3/08 the compressor comprising at least one radial stage (F02C3/10 takes precedence)
F02C 3/10 with another turbine driving an output shaft but not driving the compressor
F02C 3/107 with two or more rotors connected by power transmission
F02C 3/13 having variable working fluid interconnections between turbines or compressors or stages of different rotors

Top Applicants

Top 10 applicants by patent filingsfor 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