Patent Yard Sign in
Expired Canadian patentCanada

Process and apparatus for non-destructive eddy current testing

CA 1070766 A · Owner: Commissariat A L'Energie Atomique · Inventors: Pigeon, Michel

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A process of and apparatus for non-destructive eddy current testing involves the suppression of displayed lobes corresponding to fault parameters to be eliminated from the display. Elimination circuits are provided for operating on the measurement signal to remove the undesirable parameters from the signal by compensation of the effects produced by the parameters at different frequencies.

Read the whole patent

Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted January 29, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 29, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJanuary 29, 1980
Term endedJanuary 29, 1997
Patent numberCA 1070766 A
Classification (IPC)G01N27/82 +1 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJan 29, 1980Term endedJan 29, 1997

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.