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Expired Canadian patentCanada

Non-destructive testing of the lining of a process vessel

CA 2593767 C · Owner: Palmer, Greg · Inventors: Palmer, Greg

CIPO record

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

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Abstract From the Canadian patent

A process for the non-destructive testing of a refractory lined process vessel comprising the steps of: (a) striking an external wall of a process vessel internally lined with a refractory material with an impulse hammer; (b) measuring selected frequency characteristics of the refractory lined process vessel; and (c) analysing the measured frequency characteristics and determining the integrity of the internal lining of refractory material from said measured frequency characteristics.

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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

  • Filed January 10, 2006 and granted July 9, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 10, 2026.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 10, 2006
GrantedJuly 9, 2013
Term endedJanuary 10, 2026
Patent numberCA 2593767 C
Classification (IPC)G01B17/00 +2 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedJan 10, 2006Patent grantedJuly 9, 2013Term endedJan 10, 2026

Sources & verification

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