CPC Subgroup
G01N 21/95 characterised by the material or shape of the object to be examined (G01N21/89 - G01N21/91, G01N21/94 take precedence)
Full Title
Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light (G01N3/00 - G01N19/00 take precedence) > Systems specially adapted for particular applications > Investigating the presence of flaws or contamination > characterised by the material or shape of the object to be examined (G01N21/89 - G01N21/91, G01N21/94 take precedence)
11 direct subcodes
Child Classifications
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- G01N 21/952 Inspecting the exterior surface of cylindrical bodies or wires (G01N21/956 takes precedence)
- G01N 21/954 Inspecting the inner surface of hollow bodies, e.g. bores
- G01N 21/956 Inspecting patterns on the surface of objects
- G01N 21/958 Inspecting transparent materials