IPC Subgroup
G01N 23/2255 using incident ion beams, e.g. proton beams
Introduced: January 2018
Full Title
Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or > by measuring secondary emission from the material > using electron or ion microprobes > using incident ion beams, e.g. proton beams
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2 direct subcodes
Child Classifications
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- G01N 23/2257 Measuring excited X-rays, i.e. particle-induced X-ray emission [PIXE]
- G01N 23/2258 Measuring secondary ion emission, e.g. secondary ion mass spectrometry [SIMS]
Top Applicants
Top 10 applicants by patent filingsfor 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