IPC Subgroup
G01N 1/28 Preparing specimens for investigation
Introduced: September 1968
Last revised: January 2006
Full Title
Sampling; Preparing specimens for investigation > Preparing specimens for investigation
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
8 direct subcodes
Child Classifications
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- G01N 1/3 Staining; Impregnating
- G01N 1/32 Polishing; Etching
- G01N 1/34 Purifying; Cleaning
- G01N 1/36 Embedding or analogous mounting of samples
- G01N 1/38 Diluting, dispersing or mixing samples
- G01N 1/4 Concentrating samples
- G01N 1/42 Low-temperature sample treatment, e.g. cryofixation
- G01N 1/44 Sample treatment involving radiation, e.g. heat
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