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Expired Canadian patentCanada

Hydrocarbon isomerization catalysts and procedures for the preparation and use thereof

CA 1079707 A · Owner: Societe Anonyme Dite: Compagnie Francaise De Raffinage · Inventors: Legendre, Michel; Engelhard, Philippe

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Abstract From the Canadian patent

Hydrocarbon isomerization catalysts comprising typically refractory mineral oxide carrier such as alumina and a halogen element present in combined form together, with, in the free or combined state: - A platinum-group metal;, - second element from the group consisting of titanium, zirconium, tungsten and molybdenum; and - a metal halide such a AlCl3.

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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 June 17, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 17, 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—
GrantedJune 17, 1980
Term endedJune 17, 1997
Patent numberCA 1079707 A
Classification (IPC)B01J27/08 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJune 17, 1980Term endedJune 17, 1997

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