by investigating resistance

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Investigating or analysing materials by the use of electric, electrochemical, or magnetic means > by investigating impedance > by investigating resistance

CPC:

Investigating or analysing materials by the use of electric, electrochemical, or magnetic means (G01N3/00 – G01N25/00 take precedence; measurement or testing of electric or magnetic variables or of electric or magnetic properties of materials G01R) > by investigating impedance > by investigating resistance

Of 8 combined children, 4 exist in both systems.

4 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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G01N 27/041 CPC only CPC only
G01N 27/043 CPC only CPC only
G01N 27/045 +1 CPC CPC only CPC only
G01N 27/048 CPC only CPC only
G01N 27/06 of a liquid (involving electrolysis G01N27/26) IPC+CPC Available in IPC and CPC
G01N 27/12 of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid +5 CPC IPC+CPC Available in IPC and CPC
G01N 27/14 of an electrically-heated body in dependence upon change of temperature IPC+CPC Available in IPC and CPC
G01N 27/20 Investigating the presence of flaws +1 CPC IPC+CPC Available in IPC and CPC