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Expired Canadian patentCanada

Flame retardant polyphenylene ether resin compositions containing a halogenated flame retardant and selected organic iron salts

CA 1072237 A · Owner: General Electric Company · Inventors: Holub, Fred F.; Abolins, Visvaldis

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Abstract From the Canadian patent

Novel flame retardant polyphenylene ether resin molding compositions are disclosed which include as a, combination of flame retardants, a halogenated flame retardant and an organic iron compound wherein the organic group is derived from a compound of the formula: wherein R1 is selected from the group consisting of hydrogen hydroxyl and lower alkylene carboxy wherein the alkylene moiety has from 1-4 carbon atoms; R2 is selected from the group consisting of hydrogen, hydroxyl and lower alkyl of 1-4 carbon atoms; R3 is selected from the group consisting of hydrogen, lower alkyl of 1-4 carbon atoms hydroxyl, lower, alkylene carboxy, aryl aralkyl, alkaryl, lower alkylidene, carboxy wherein the …

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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 February 19, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 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—
GrantedFebruary 19, 1980
Term endedFebruary 19, 1997
Patent numberCA 1072237 A
Classification (IPC)C08K5/09 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedFeb 19, 1980Term endedFeb 19, 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.