operated by fluid pressure

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Details of servomotor systems > Fluid distribution or supply devices characterised by their adaptation to the control of servomotors > for use with a single servomotor > operated by fluid pressure

CPC:

Details of servomotor systems ( F15B15/00 take precedence) > Fluid distribution or supply devices characterised by their adaptation to the control of servomotors > for use with a single servomotor > operated by fluid pressure

CPC subdivides this area 4x more granularly than IPC with 3 additional codes.

3 codes are CPC-only extensions.

Note: 1 CPC extensions are marked as secondary classification only.

Child Classifications

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F15B 13/0422 +1 CPC CPC only CPC only
F15B 13/0426 CPC only CPC only
F15B 13/043 with electrically-controlled pilot valves +5 CPC IPC+CPC Available in IPC and CPC
F15B 2013/0428 2nd only CPC only CPC only

Top Applicants

Top Applicants (IPC)

Class F15,2013–2023, worldwide · Source: EPO PATSTAT

ROBERT BOSCH DE 1,079
SCHAEFFLER TECHNOLOGIES & COMPANY DE 980
SMC CORPORATION JP 737
HITACHI CONSTRUCTION MACHINERY COMPANY JP 674
KYB CORPORATION JP 525
CATERPILLAR US 461
FESTO & COMPANY DE 451
ZHEJIANG UNIVERSITY 448
HITACHI CONSTRUCTION MACHINERY COMPANY 442
XUZHOU HEAVY MACHINERY COMPANY 404

Top Applicants (CPC)

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