Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more

Filing statistics

IPC G01N 22/00 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

Investigating strength properties of solid materials by application of mechanical stress Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid Aanalysing materials by measuring the pressure or volume of a gas or vapour Investigating density or specific gravity of materials; analysing materials by determining density or specific gravity Investigating flow properties of materials, e.g. viscosity, plasticity; analysing materials by determining flow properties Investigating surface or boundary effects, e.g. wetting power; investigating diffusion effects; analysing materials by determining surface, boundary, or diffusion effects Investigating characteristics of particles; investigating permeability, pore-volume, or surface-area of porous materials Investigating resistance of materials to the weather, to corrosion, or to light Investigating or analysing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects