IPC Subgroup
F15B 11/06 involving features specific to the use of a compressible medium, e.g. air, steam
Introduced: September 1968
Last revised: January 2006
Full Title
Servomotor systems without provision for follow-up action > involving features specific to the use of a compressible medium, e.g. air, steam
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- Subclass:
- SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
3 direct subcodes
Child Classifications
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- F15B 11/064 with devices for saving the compressible medium
- F15B 11/068 with valves for gradually putting pneumatic systems under pressure
- F15B 11/072 Combined pneumatic-hydraulic systems
Top Applicants
Top 10 applicants by patent filingsfor 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