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PCE
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DIFF Subgroup
G01N 29/36

Detecting the response signal

Introduced: January 2006

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 > Detecting the response signal

CPC:

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 (G01N3/00 - G01N27/00 take precedence) > Detecting the response signal

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

IPC defines codes here since 2006.

Child Classifications

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  • G01N 29/38 by time filtering, e.g. using time gates since 2006 IPC+CPC Available in IPC and CPC
  • G01N 29/40 by amplitude filtering, e.g. by applying a threshold since 2006 IPC+CPC Available in IPC and CPC
  • G01N 29/42 by frequency filtering since 2006 IPC+CPC Available in IPC and CPC