CPC Main Group
G01N 31/00 Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
8 direct subcodes
Child Classifications
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- G01N 31/02 using precipitation
- G01N 31/10 using catalysis
- G01N 31/12 using combustion (G01N25/20 takes precedence)
- G01N 31/16 using titration
- G01N 31/20 using microanalysis, e.g. drop reaction
- G01N 31/22 using chemical indicators (G01N31/02 takes precedence)
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