CPC Main Group
G01N 19/00 Investigating materials by mechanical methods (G01N3/00 - G01N17/00 take precedence)
5 direct subcodes
Child Classifications
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- G01N 19/02 Measuring coefficient of friction between materials
- G01N 19/04 Measuring adhesive force between materials, e.g. of sealing tape, of coating
- G01N 19/06 Investigating by removing material, e.g. spark-testing
- G01N 19/08 Detecting presence of flaws or irregularities
- G01N 19/10 Measuring moisture content, e.g. by measuring change in length of hygroscopic filament; Hygrometers
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