CPC Subgroup Additional Only
F15B 2211/80 Other types of control related to particular problems or conditions
Full Title
Circuits for servomotor systems > Other types of control related to particular problems or conditions
11 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- F15B 2211/85 Control during special operating conditions
- F15B 2211/855 Testing of fluid pressure systems
- F15B 2211/857 Monitoring of fluid pressure systems
- F15B 2211/86 Control during or prevention of abnormal conditions
- F15B 2211/865 Prevention of failures
- F15B 2211/87 Detection of failures
- F15B 2211/875 Control measures for coping with failures
- F15B 2211/88 Control measures for saving energy
- F15B 2211/885 Control specific to the type of fluid, e.g. specific to magnetorheological fluid
- F15B 2211/89 Control specific for achieving vacuum or "negative pressure"
- F15B 2211/895 Manual override
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