using electric radiation detectors (G01J1/20 takes precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: using electric radiation detectors

CPC: using electric radiation detectors (G01J1/20 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Photometry, e.g. photographic exposure meter > by comparison with reference light or electric value > using electric radiation detectors

CPC:

Photometry, e.g. photographic exposure meter (spectrophotometry G01J3/00; specially adapted for radiation pyrometry G01J5/00 ) > by comparison with reference light or electric value > using electric radiation detectors (G01J1/20 takes precedence)

CPC subdivides this area 7x more granularly than IPC with 6 additional codes.

6 codes are CPC-only extensions.

Note: 5 CPC extensions are marked as secondary classification only.

Child Classifications

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G01J 1/1626 +6 CPC CPC only CPC only
G01J 1/18 using comparison with a reference electric value +2 CPC IPC+CPC Available in IPC and CPC
G01J 2001/1605 2nd only CPC only CPC only
G01J 2001/161 2nd only +2 CPC CPC only CPC only
G01J 2001/1668 2nd only CPC only CPC only
G01J 2001/1673 2nd only CPC only CPC only
G01J 2001/1678 2nd only +3 CPC CPC only CPC only