Details

Introduced: January 1990

Full Title

Full titles differ between systems:

IPC:

Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object > Details

CPC:

CPC subdivides this area 2x more granularly than IPC with 6 additional codes.

6 codes are CPC-only extensions.

IPC defines codes here since 1990.

Child Classifications

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G01N 29/221 CPC only CPC only
G01N 29/222 CPC only CPC only
G01N 29/223 CPC only CPC only
G01N 29/225 +1 CPC CPC only CPC only
G01N 29/227 CPC only CPC only
G01N 29/228 CPC only CPC only
G01N 29/24 Probes since 1990 +12 CPC IPC+CPC Available in IPC and CPC
G01N 29/26 Arrangements for orientation or scanning since 1990 +1 CPC IPC+CPC Available in IPC and CPC
G01N 29/28 providing acoustic coupling since 1990 IPC+CPC Available in IPC and CPC
G01N 29/30 Arrangements for calibrating or comparing, e.g. with standard objects since 2006 IPC+CPC Available in IPC and CPC
G01N 29/32 Arrangements for suppressing undesired influences, e.g. temperature or pressure variations since 2006 +2 CPC IPC+CPC Available in IPC and CPC