CPC Subgroup Additional Only
F15B 2211/30 Directional control
Full Title
Circuits for servomotor systems > Directional control
Filing statistics
CPC F15B 2211/30 belongs to the parent subclass F15B, which recorded 65,877 patent applications worldwide between 2013 and 2023. Annual filings grew from 4,301 in 2013 to 5,272 in 2023 (+23%), peaking at 7,310 applications in 2018. The most active applicants in class F15 are ROBERT BOSCH (1,281 applications), SMC CORPORATION (865 applications) and HITACHI CONSTRUCTION MACHINERY COMPANY (814 applications).
Source: EPO PATSTAT, worldwide filings
8 direct subcodes
Child Classifications
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- F15B 2211/305 characterised by the type of valves
- F15B 2211/31 characterised by the positions of the valve element
- F15B 2211/315 characterised by the connections of the valve or valves in the circuit
- F15B 2211/32 characterised by the type of actuation
- F15B 2211/35 Directional control combined with flow control
- F15B 2211/355 Pilot pressure control
- F15B 2211/36 Pilot pressure sensing
- F15B 2211/365 Directional control combined with flow control and pressure control
Top Applicants
Top 10 applicants by patent filingsfor class F15, 2013–2023, worldwide · Source: EPO PATSTAT
- ROBERT BOSCH DE 1,281
- SMC CORPORATION JP 865
- HITACHI CONSTRUCTION MACHINERY COMPANY JP 814
- KYB CORPORATION JP 584
- SCHAEFFLER TECHNOLOGIES & COMPANY DE 536
- CATERPILLAR US 532
- FESTO & COMPANY DE 486
- JOHN DEERE US 419
- KAWASAKI HEAVY IND JP 368
- HAMILTON SUNDSTRAND US 368