F15B 11/072 Combined pneumatic-hydraulic systems (F15B11/032 takes precedence)
Introduced: January 1995
Title
Titles differ between systems:
IPC: Combined pneumatic-hydraulic systems
CPC: Combined pneumatic-hydraulic systems (F15B11/032 takes precedence)
Full Title
Full titles differ between systems:
Servomotor systems without provision for follow-up action > involving features specific to the use of a compressible medium, e.g. air, steam > Combined pneumatic-hydraulic systems
Servomotor systems without provision for follow-up action; (F15B3/00 takes precedence) > involving features specific to the use of a compressible medium, e.g. air, steam > Combined pneumatic-hydraulic systems (F15B11/032 takes precedence)
Of 2 combined children, 1 exist in both systems.
1 codes are CPC-only extensions.
IPC defines codes here since 1995.
Child Classifications
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- F15B 11/076 with pneumatic drive or displacement and speed control or stopping by hydraulic braking since 1995 IPC+CPC Available in IPC and CPC
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