for measuring contours or curvatures

Introduced: September 1968

Full Title

Measuring arrangements characterised by the use of optical techniques > for measuring contours or curvatures

CPC subdivides this area 3x more granularly than IPC with 5 additional codes.

5 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2000.

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G01B 11/2408 CPC only CPC only
G01B 11/2416 CPC only CPC only
G01B 11/2425 CPC only CPC only
G01B 11/2433 CPC only CPC only
G01B 11/2441 CPC only CPC only
G01B 11/245 using a plurality of fixed, simultaneously operating transducers ( G01B11/255 take precedence) since 2000 IPC+CPC Available in IPC and CPC
G01B 11/25 by projecting a pattern, e.g. moiré fringes on the object (G01B11/255 takes precedence ) since 2000 +8 CPC IPC+CPC Available in IPC and CPC
G01B 11/255 for measuring radius of curvature since 2000 IPC+CPC Available in IPC and CPC

Class G01,2013–2023, worldwide · Source: EPO PATSTAT

Class G01,2013–2023, worldwide · Source: EPO PATSTAT