DIFF Subgroup
G01K 7/02 using thermoelectric elements, e.g. thermocouples
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat > using thermoelectric elements, e.g. thermocouples
CPC:
Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat (giving results other than momentary value of temperature G01K3/00) > using thermoelectric elements, e.g. thermocouples
Of 9 combined children, 5 exist in both systems.
4 codes are CPC-only extensions.
Child Classifications
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- G01K 7/026 Arrangements for signalling failure or disconnection of thermocouples since 2021 IPC+CPC Available in IPC and CPC
- G01K 7/04 the object to be measured not forming one of the thermoelectric materials IPC+CPC Available in IPC and CPC
- G01K 7/08 the object to be measured forming one of the thermoelectric materials, e.g. pointed type IPC+CPC Available in IPC and CPC
- G01K 7/10 Arrangements for compensating for auxiliary variables, e.g. length of lead IPC+CPC Available in IPC and CPC
- G01K 7/14 Arrangements for modifying the output characteristic, e.g. linearising IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class G01,2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 41,447
- CHINESE ACADEMY OF SCIENCES 32,952
- ROBERT BOSCH DE 16,470
- SAMSUNG ELECTRONICS COMPANY KR 10,052
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 9,573
- ZHEJIANG UNIVERSITY 9,529
- GUANGDONG POWER GRID CORPORATION 8,615
- TSINGHUA UNIVERSITY 7,805
- HALLIBURTON ENERGY SERVICES GROUP US 7,796
- QUALCOMM US 7,171
Top Applicants (CPC)
Class G01,2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 21,460
- ROBERT BOSCH DE 17,801
- SGCC(STATE GRID CORPORATION OF CHINA) 17,347
- SAMSUNG ELECTRONICS COMPANY KR 13,192
- QUALCOMM US 9,900
- HALLIBURTON ENERGY SERVICES GROUP US 9,742
- PHILIPS ELECTRONICS NL 7,249
- MITSUBISHI ELECTRIC CORPORATION JP 6,503
- ZHEJIANG UNIVERSITY 6,414
- DENSO CORPORATION JP 6,382