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IPC Subgroup
G01N 21/84

Systems specially adapted for particular applications

Introduced: January 1980

Last revised: January 2006

Full Title

Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light > Systems specially adapted for particular applications

Classification Context

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

4 direct subcodes

Child Classifications

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  • G01N 21/85 Investigating moving fluids or granular solids
  • G01N 21/86 Investigating moving sheets
  • G01N 21/87 Investigating jewels