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IPC Subgroup
G05D 23/3

Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature

Introduced: September 1968

Last revised: January 2006

Full Title

Control of temperature > characterised by the use of electric means > Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature

Classification Context

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

1 direct subcode

Child Classifications

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  • G05D 23/32 with provision for adjustment of the effect of the auxiliary heating device, e.g. as a function of time

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