CPC Subgroup
G01N 25/28 the rise in temperature of the gases resulting from combustion being measured directly
Full Title
Investigating or analyzing materials by the use of thermal means (G01N3/00 - G01N23/00 take precedence) > by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity (calorimeters per se G01K) > on combustion or catalytic oxidation, e.g. of components of gas mixtures > the rise in temperature of the gases resulting from combustion being measured directly
3 direct subcodes
Child Classifications
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- G01N 25/30 using electric temperature-responsive elements
- G01N 25/34 using mechanical temperature-responsive elements, e.g. bimetallic (bimetallic elements per se G12B1/02)
- G01N 25/38 using the melting or combustion of a solid
Top Applicants
Top 10 applicants by patent filingsfor 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