DIFF Subgroup
G01N 23/221 by activation analysis
Introduced: July 1974
Full Title
Full titles differ between systems:
IPC:
Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or > by measuring secondary emission from the material > by activation analysis
CPC:
Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 > by measuring secondary emission from the material > by activation analysis
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1980.
Child Classifications
Navigate with arrow keys, Enter to open