CPC Subgroup Additional Only
F05D 2270/01 Purpose of the control system
Full Title
Control > Purpose of the control system
Filing statistics
CPC F05D 2270/01 belongs to the parent subclass F05D, which recorded 129,755 patent applications worldwide between 2013 and 2023. Annual filings declined from 11,710 in 2013 to 7,840 in 2023 (-33%), peaking at 14,062 applications in 2016. The most active applicants in class F05 are GE (GENERAL ELECTRIC COMPANY) (12,002 applications), UNITED TECHNOLOGIES CORPORATION (UTC) (8,736 applications) and SAFRAN AIRCRAFT ENGINES (6,804 applications).
Source: EPO PATSTAT, worldwide filings
17 direct subcodes
Child Classifications
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- F05D 2270/02 to control rotational speed (n)
- F05D 2270/03 in variable speed operation
- F05D 2270/04 to control acceleration (u)
- F05D 2270/05 to affect the output of the engine
- F05D 2270/06 to match engine to driven device
- F05D 2270/07 to improve fuel economy
- F05D 2270/08 to produce clean exhaust gases
- F05D 2270/09 to cope with emergencies
- F05D 2270/10 to cope with, or avoid, compressor flow instabilities
- F05D 2270/11 to prolong engine life
- F05D 2270/12 to maintain desired vehicle trajectory parameters
- F05D 2270/13 to control two or more engines simultaneously
- F05D 2270/14 to control thermoacoustic behaviour in the combustion chambers
- F05D 2270/16 to control water or steam injection
- F05D 2270/17 to control boundary layer
- F05D 2270/18 using fluidic amplifiers or actuators
- F05D 2270/20 to optimize the performance of a machine
Top Applicants
Top 10 applicants by patent filingsfor class F05, 2013–2023, worldwide · Source: EPO PATSTAT
- GE (GENERAL ELECTRIC COMPANY) US 12,002
- UNITED TECHNOLOGIES CORPORATION (UTC) US 8,736
- SAFRAN AIRCRAFT ENGINES FR 6,804
- RAYTHEON TECHNOLOGIES CORPORATION US 4,530
- SIEMENS DE 4,371
- GE (GENERAL ELECTRIC COMPANY) 3,686
- ROLLS-ROYCE GB 3,594
- PRATT & WHITNEY CANADA CORPORATION CA 3,415
- VESTAS DK 3,076
- WOBBEN PROPERTIES DE 2,614