thermally 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 > thermally 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 > thermally excited

CPC subdivides this area 2x more granularly than IPC with 4 additional codes.

4 codes are CPC-only extensions.

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

IPC defines codes here since 1980.

Child Classifications

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G01N 2021/712 2nd only CPC only CPC only
G01N 21/714 CPC only CPC only
G01N 21/716 CPC only CPC only
G01N 21/718 CPC only CPC only
G01N 21/72 using flame burners since 1980 +1 CPC IPC+CPC Available in IPC and CPC
G01N 21/73 using plasma burners or torches since 1980 IPC+CPC Available in IPC and CPC
G01N 21/74 using flameless atomising, e.g. graphite furnaces since 1980 +1 CPC IPC+CPC Available in IPC and CPC