CPC Main Group
F15C 1/00 Circuit elements having no moving parts
Filing statistics
CPC F15C 1/00 belongs to the parent subclass F15C, which recorded 589 patent applications worldwide between 2013 and 2023. Annual filings declined from 48 in 2013 to 29 in 2023 (-40%), peaking at 92 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
14 direct subcodes
Child Classifications
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- F15C 1/02 Details
- F15C 1/08 Boundary-layer devices, e.g. wall-attachment amplifiers
- F15C 1/14 Stream-interaction devices; Momentum-exchange devices, e.g. operating by exchange between two orthogonal fluid jets
- F15C 1/16 Vortex devices, i.e. devices in which use is made of the pressure drop associated with vortex motion in a fluid
- F15C 1/18 Turbulence devices, i.e. devices in which a controlling stream will cause a laminar flow to become turbulent
- F15C 1/20 Direct-impact devices i.e., devices in which two collinear opposing power streams are impacted
- F15C 1/22 Oscillators
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