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IPC Main Group
G05D 16/00

Control of fluid pressure

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
PHYSICS
Class:
CONTROLLING; REGULATING
Subclass:
SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES

Additional Content

Devices for controlling tyre pressure Control of air pressure within diving suit Automatic control of aircraft air-pressure Control devices, e.g. for controlling gas pressure, for preventing jamming of material in bulk material conveyors Control of pressure in the treatment of filament-forming material Controlling pressure of drilling fluid for flushing boreholes Controlling lubricant pressure Control of pressure of fluid carrier in chemical analysis Means for obtaining or maintaining pressure in electric discharge tubes or lamps Means for obtaining or maintaining pressure in electric incandescent lamps

Related Keywords

control of FLUID(S) pressurecontrolling LIQUID(S)

4 direct subcodes

Child Classifications

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  • G05D 16/02 Modifications to reduce the effects of instability, e.g. due to vibrations, friction, abnormal temperature, overloading or imbalance
  • G05D 16/2 characterised by the use of electric means

Top Applicants

Top 10 applicants by patent filingsfor class G05, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SIEMENS DE 4,725
  2. SGCC(STATE GRID CORPORATION OF CHINA) 4,571
  3. FANUC JP 4,233
  4. MITSUBISHI ELECTRIC CORPORATION JP 3,143
  5. FANUC 2,981
  6. ROBERT BOSCH DE 2,813
  7. CHINESE ACADEMY OF SCIENCES 2,500
  8. LG ELECTRONICS KR 2,182
  9. OMRON CORPORATION JP 2,036
  10. SAMSUNG ELECTRONICS COMPANY KR 1,981