CPC Subgroup Additional Only
G01N 2201/121 Correction signals
Full Title
Features of devices classified in G01N21/00 > Circuits of general importance; Signal processing > Correction signals
5 direct subcodes
Child Classifications
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- G01N 2201/1211 for temperature
- G01N 2201/1214 for humidity
- G01N 2201/1215 for interfering gases
- G01N 2201/1217 for index of solution, carrying fluids
- G01N 2201/1218 for pressure variations
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