optically excited

Introduced: January 1980

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 in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light > optically excited

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 in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light > optically excited

CPC subdivides this area 4x more granularly than IPC with 5 additional codes.

5 codes are CPC-only extensions.

Note: 3 CPC extensions are marked as secondary classification only.

IPC defines codes here since 1980.

Child Classifications

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G01N 2021/633 2nd only CPC only CPC only
G01N 2021/634 2nd only CPC only CPC only
G01N 2021/635 2nd only CPC only CPC only
G01N 21/631 +1 CPC CPC only CPC only
G01N 21/636 +2 CPC CPC only CPC only
G01N 21/64 Fluorescence; Phosphorescence since 1980 +12 CPC IPC+CPC Available in IPC and CPC
G01N 21/65 Raman scattering since 1980 +3 CPC IPC+CPC Available in IPC and CPC