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Expired Canadian patentCanada

Grouting method

CA 1189709 A · Owner: Halliburton Company · Inventors: Gursky, William, Jr.; Knox, Lloyd C.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

Abstract, A method of grouting using aqueous solutions of alkali silicate materials in sealing the annular space formed between either a jacket leg or pile sleeve and a pile driven therethrough of an offshore platform or other, similar annular space, to support a column of grout thereon.

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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 2, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 27, 1983
GrantedJuly 2, 1985
Term endedJuly 2, 2002
Patent numberCA 1189709 A
Classification (IPC)E02D5/54 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedSep 27, 1983Patent grantedJuly 2, 1985Term endedJuly 2, 2002

Sources & verification

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