by detecting the presence of fluid at the leakage point

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Investigating fluid tightness of structures > by using fluid or vacuum > by detecting the presence of fluid at the leakage point

CPC:

Investigating fluid-tightness of structures > by using fluid or vacuum > by detecting the presence of fluid at the leakage point

Of 6 combined children, 5 exist in both systems.

1 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

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G01M 3/042 +1 CPC CPC only CPC only
G01M 3/06 by observing bubbles in a liquid pool IPC+CPC Available in IPC and CPC
G01M 3/12 by observing elastic covers or coatings, e.g. soapy water IPC+CPC Available in IPC and CPC
G01M 3/16 using electric detection means ( G01M3/06, G01M3/12, G01M3/20, G01M3/24, G01M3/26 take precedence) +1 CPC IPC+CPC Available in IPC and CPC
G01M 3/20 using special tracer materials, e.g. dye, fluorescent material, radioactive material +2 CPC IPC+CPC Available in IPC and CPC
G01M 3/24 using infrasonic, sonic or ultrasonic vibrations +1 CPC IPC+CPC Available in IPC and CPC

Class G01,2013–2023, worldwide · Source: EPO PATSTAT

Class G01,2013–2023, worldwide · Source: EPO PATSTAT