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PCE
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DIFF Main Group
G05D 7/00

Control of flow (level control G05D9/00; control of flow ratio G05D11/00)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Control of flow

CPC: Control of flow (level control G05D9/00; control of flow ratio G05D11/00)

Full Title

Full titles differ between systems:

IPC:

Control of flow

CPC:

Control of flow (level control G05D9/00; control of flow ratio G05D11/00)

Additional Content IPC

Limiting references

Level control Control of flow ratio

Application references

Controlling the air quantity in hair drying helmets Controlling flow of media to the human body Controlling flow of gases or vapour in electrostatic separators Control of fluent material in coating devices Flow-control devices in apparatus or devices for dispensing beverages on draught Automatic means for reducing or intermittently interrupting flow for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers Controlling gas flow through gas purifiers Controlling flow of drilling fluid for flushing boreholes Controlling the flow of the obtained fluid to or in wells Controlling by varying flow non-positive-displacement machines or engines Controlling lubrication pressure or quantity Control of coolant flow for cooling machines or engines in general, or for internal-combustion engines Control of gas-turbine working fluid flow , Throttle passages in pipes Controlling air flow rate in air treatment arrangements Controlling of air or gas flow in dryers Controlling the rate of feed or discharge in continuous flow weighing apparatus Control of nuclear power plant by varying flow of coolant

Of 4 combined children, 3 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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  • G05D 7/005 CPC only CPC only
  • G05D 7/03 with auxiliary non-electric power IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

Class G05,2013–2023, worldwide · Source: EPO PATSTAT

  1. FANUC JP 6,367
  2. SIEMENS DE 5,963
  3. FANUC 4,535
  4. MITSUBISHI ELECTRIC CORPORATION JP 4,201
  5. ROBERT BOSCH DE 4,010
  6. LG ELECTRONICS KR 3,802
  7. SAMSUNG ELECTRONICS COMPANY KR 3,143
  8. FORD GLOBAL TECHNOLOGIES US 2,889
  9. TOYOTA MOTOR CORPORATION 2,778
  10. OMRON CORPORATION JP 2,743