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Expired Canadian patentCanada

Method of inspecting and treating sucker rod

CA 1080947 A · Owner: Payne, Bobby L. · Inventors: Payne, Bobby L.

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

METHOD OF INSPECTING AND TREATING SUCKER ROD" ABSTRACT OF THE DISCLOSURE, A continuous process for reclaiming sucker rod which has been used downhole in a borehole. The salvaged rod is degreased, visually inspected, subjected to a shot peening operation, analyzed for structural imperfections imparted, with a protective coating which includes an inhibiting agent and stored for subsequent use. - 1 -

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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

  • Granted July 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 8, 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—
GrantedJuly 8, 1980
Term endedJuly 8, 1997
Patent numberCA 1080947 A
Classification (IPC)B05D1/18

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJuly 8, 1980Term endedJuly 8, 1997

Sources & verification

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