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DIFF Subgroup
G01N 29/02

Analysing fluids (using acoustic emission techniques G01N29/14 )

Introduced: September 1968

Title

Titles differ between systems:

IPC: Analysing fluids

CPC: Analysing fluids (using acoustic emission techniques G01N29/14 )

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 > Analysing fluids

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) > Analysing fluids (using acoustic emission techniques G01N29/14 )

Of 5 combined children, 4 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 2006.

Child Classifications

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  • G01N 29/022 CPC only CPC only
  • G01N 29/024 by measuring propagation velocity or propagation time of acoustic waves since 2006 IPC+CPC Available in IPC and CPC
  • G01N 29/028 by measuring mechanical or acoustic impedance since 2006 IPC+CPC Available in IPC and CPC
  • G01N 29/032 by measuring attenuation of acoustic waves since 2006 IPC+CPC Available in IPC and CPC
  • G01N 29/036 by measuring frequency or resonance of acoustic waves since 2006 IPC+CPC Available in IPC and CPC