IPC Subgroup
G01N 15/02 Investigating particle size or size distribution
Introduced: September 1968
Last revised: January 2024
Full Title
Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials > Investigating particle size or size distribution
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
Additional Content
Investigating particle size or size distribution by measuring osmotic pressure Investigating sedimentation of particle suspensions Investigating individual particles
1 direct subcode
Child Classifications
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- G01N 15/0205 by optical means
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