IPC Main Group
G01N 31/00 Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroups; Apparatus specially adapted for such methods
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
Additional Content
testing the effectiveness or completeness of sterilisation procedures without using enzymes or microorganisms (involving enzymes or microorganisms , ) apparatus for enzymology or microbiology
Related Keywords
chemical test PAPER
6 direct subcodes
Child Classifications
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- G01N 31/02 using precipitation
- G01N 31/1 using catalysis
- G01N 31/12 using combustion
- G01N 31/16 using titration
- G01N 31/2 using microanalysis, e.g. drop reaction
- G01N 31/22 using chemical indicators
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