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IPC Main Group
G01N 15/00

Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials

Introduced: September 1968

Last revised: January 2024

Classification Context

Section:
PHYSICS
Class:
MEASURING; TESTING
Subclass:
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

Filing statistics

IPC G01N 15/00 belongs to the parent subclass G01N, which recorded 1,640,918 patent applications worldwide between 2013 and 2023. Annual filings grew from 83,705 in 2013 to 199,434 in 2023 (+138%). The most active applicants in class G01 are SGCC(STATE GRID CORPORATION OF CHINA) (41,447 applications), CHINESE ACADEMY OF SCIENCES (32,952 applications) and ROBERT BOSCH (16,470 applications).

Source: EPO PATSTAT, worldwide filings

Additional Content

particle particles discrete material structure with a representative dimension less than 1 cm and with at least one nearly constant geometrical attribute, like shape, diameter or boundary. Some examples are: biological cells, bubbles or material chips. permeability capacity of a porous material to transmit a fluid porosity fraction of the volume of an apparent solid that is actually empty space porous materials porous material includes microporous materials, as well as film or membrane materials

Related Keywords

determining size or concentration of PARTICLESinvestigating PERMEABILITY of porous materialsinvestigating PORE volume; investigating porosity

6 direct subcodes

Child Classifications

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  • G01N 15/01 specially adapted for biological cells, e.g. blood cells
  • G01N 15/08 Investigating permeability, pore volume, or surface area of porous materials

Top Applicants

Top 10 applicants by patent filingsfor class G01, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 41,447
  2. CHINESE ACADEMY OF SCIENCES 32,952
  3. ROBERT BOSCH DE 16,470
  4. SAMSUNG ELECTRONICS COMPANY KR 10,052
  5. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 9,573
  6. ZHEJIANG UNIVERSITY 9,529
  7. GUANGDONG POWER GRID CORPORATION 8,615
  8. TSINGHUA UNIVERSITY 7,805
  9. HALLIBURTON ENERGY SERVICES GROUP US 7,796
  10. QUALCOMM US 7,171