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Expired Canadian patentCanada

Catalyst and a polymerization process employing the catalyst

CA 1069109 A · Owner: Phillips Petroleum Company · Inventors: Fodor, Lawrence M.; Moberly, Charles W.; Welch, Melvin B.

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Abstract From the Canadian patent

Alpha olefins are polymerized employing a catalyst which forms on mixing a first component resulting from admixture of a halogenated titanium compound, a Lewis base and a magnesium or manganese halide; a second component which is an organoaluminum compound; a third component which is a Lewis base; and a fourth component which is an organoaluminum monohalide.

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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 January 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 1, 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—
GrantedJanuary 1, 1980
Term endedJanuary 1, 1997
Patent numberCA 1069109 A
Classification (IPC)C08F4/16 +1 more

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