IPC Subgroup
G05D 23/19 characterised by the use of electric means
Introduced: September 1968
Last revised: January 2006
Full Title
Control of temperature > characterised by the use of electric means
Classification Context
- Section:
- PHYSICS
- Class:
- CONTROLLING; REGULATING
- Subclass:
- SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
4 direct subcodes
Child Classifications
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- G05D 23/2 with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D 23/27 with sensing element responsive to radiation
- G05D 23/275 with sensing element expanding, contracting, or fusing in response to changes of temperature
- G05D 23/3 Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
Top Applicants
Top 10 applicants by patent filingsfor class G05, 2013–2023, worldwide · Source: EPO PATSTAT
- SIEMENS DE 4,725
- SGCC(STATE GRID CORPORATION OF CHINA) 4,571
- FANUC JP 4,233
- MITSUBISHI ELECTRIC CORPORATION JP 3,143
- FANUC 2,981
- ROBERT BOSCH DE 2,813
- CHINESE ACADEMY OF SCIENCES 2,500
- LG ELECTRONICS KR 2,182
- OMRON CORPORATION JP 2,036
- SAMSUNG ELECTRONICS COMPANY KR 1,981