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Expired Canadian patentCanada

An olefin epoxidation process, a catalyst for use in the process, a carrier for use in making the catalyst, and a process for making the carrier

CA 2598523 C · Owner: Rubinstein, Leonid Isaakovich · Inventors: Rubinstein, Leonid Isaakovich; Yeates, Randall Clayton

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Abstract From the Canadian patent

A carrier that may be used in the manufacture of an olefin epoxidation catalyst is provided that is obtained from a process involving the acid digestion of aluminum metal. Also provided is an olefin epoxidation catalyst comprising a silver component deposited on the carrier. Also provided is a process for the epoxidation of an olefin employing the catalyst and a process for producing a 1,2-diol, a 1,2-diol ether or an alkanolamine employing the , olefin oxide.

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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 February 17, 2006 and granted November 24, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 17, 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.
FiledFebruary 17, 2006
GrantedNovember 24, 2015
Term endedFebruary 17, 2026
Patent numberCA 2598523 C
Classification (IPC)B01J21/04 +2 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedFeb 17, 2006Patent grantedNov 24, 2015Term endedFeb 17, 2026

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