IPC Subgroup
G01N 25/04 of melting point; of freezing point; of softening point
Introduced: September 1968
Last revised: January 2006
Full Title
Investigating or analysing materials by the use of thermal means > by investigating changes of state or changes of phase; by investigating sintering > of melting point; of freezing point; of softening point
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
Related Keywords
investigating FREEZING -pointinvestigating MELTING point
1 direct subcode
Child Classifications
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- G01N 25/06 Analysis by measuring change of freezing point
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