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Expired Canadian patentCanada

Continuous process for the production of powdered uranium dioxide from uranyl nitrate

CA 1233315 A · Owner: General Electric Company · Inventors: Runion, Harold L.; Divins, Larry A.

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Abstract From the Canadian patent

An improved process for producing powdered uranium dioxide from a solution of uranyl nitrate which is suitable for the manufacture of fuel for nuclear reactors. The process is continuous and comprises an incremental precipitation of soluble uranyl nitrate with ammonium hydroxide which is interrupted with an intermediate aging period. The precipitate of ammonium uranate solids is dried and thermally converted to a powdered oxide of uranium.

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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 March 1, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 1, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 23, 1985
GrantedMarch 1, 1988
Term endedMarch 1, 2005
Patent numberCA 1233315 A
Classification (IPC)C01G43/02

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedAug 23, 1985Patent grantedMarch 1, 1988Term endedMarch 1, 2005

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