DIFF Main Group
G01N 3/00 Investigating strength properties of solid materials by application of mechanical stress
Introduced: September 1968
IPC and CPC are identically structured here. All 14 subcodes exist in both systems.
5 shared codes have differing titles between IPC and CPC.
Child Classifications
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- G01N 3/08 by applying steady tensile or compressive forces (G01N3/28 takes precedence) IPC+CPC Available in IPC and CPC
- G01N 3/20 by applying steady bending forces (G01N3/26, G01N3/28 take precedence) IPC+CPC Available in IPC and CPC
- G01N 3/22 by applying steady torsional forces (G01N3/26, G01N3/28 take precedence) IPC+CPC Available in IPC and CPC
- G01N 3/24 by applying steady shearing forces (G01N3/26, G01N3/28 take precedence) IPC+CPC Available in IPC and CPC
- G01N 3/28 Investigating ductility, e.g. suitability of sheet metal for deep-drawing or spinning IPC+CPC Available in IPC and CPC
- G01N 3/30 by applying a single impulsive force, e.g. by falling weight IPC+CPC Available in IPC and CPC
- G01N 3/58 Investigating machinability by cutting tools; Investigating the cutting ability of tools IPC+CPC Available in IPC and CPC
- G01N 3/60 Investigating resistance of materials, e.g. refractory materials, to rapid heat changes IPC+CPC Available in IPC and CPC
- G01N 3/62 Manufacturing, calibrating, or repairing devices used in investigations covered by the preceding subgroups 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