CPC Subgroup Additional Only
F15B 2211/422 actuated by biasing means, e.g. spring-actuated
Full Title
Circuits for servomotor systems > Flow control > characterised by the type of actuation > mechanically > actuated by biasing means, e.g. spring-actuated
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