in moving material, e.g. running paper or textiles (G01N21/90, G01N21/91, G01N21/94 take precedence)

Introduced: January 1980

Title

Titles differ between systems:

IPC: in moving material, e.g. paper, textiles

CPC: in moving material, e.g. running paper or textiles (G01N21/90, G01N21/91, G01N21/94 take precedence)

Full Title

Full titles differ between systems:

IPC:

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 > Investigating the presence of flaws, defects or contamination > in moving material, e.g. paper, textiles

CPC:

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 > in moving material, e.g. running paper or textiles (G01N21/90, G01N21/91, G01N21/94 take precedence)

CPC subdivides this area 4x more granularly than IPC with 3 additional codes.

3 codes are CPC-only extensions.

Note: 1 CPC extensions are marked as secondary classification only.

IPC defines codes here since 2000.

Child Classifications

Navigate with arrow keys, Enter to open

G01N 2021/8909 2nd only +3 CPC CPC only CPC only
G01N 21/8901 +5 CPC CPC only CPC only
G01N 21/8914 +4 CPC CPC only CPC only
G01N 21/892 characterised by the flaw, defect or object feature examined since 2000 +6 CPC IPC+CPC Available in IPC and CPC