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Expired Canadian patentCanada

Heat stable polymeric gelloids

CA 1295766 C · Owner: Toy, Lester Tungnan · Inventors: Chang, Rong Jong; Toy, Lester Tungnan

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Abstract From the Canadian patent

The invention relates to novel gelloid compositions methods of making the compositions, methods of covering a substrate and providing an insulation conductive of stress grading layer of a gelloid composition and use of the, gelloid compositions with an electrical device the gelloid, compositions comprising a crosslinked non-silicone polymer having an olefinic unsaturated content of less than 10 mole percent and having from about .1 to about 3 crosslinks per weight average molecule, having dispersed therein a liquid in an amount of from about 20% to about 95% by weight based on the weight of the liquid and polymer and from 0 to 0.3, volume fraction of a filler said composition having a, …

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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 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 11, 2009.
  • 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 30, 1985
GrantedFebruary 11, 1992
Term endedFebruary 11, 2009
Patent numberCA 1295766 C
Classification (IPC)H01B1/20 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedAug 30, 1985Patent grantedFeb 11, 1992Term endedFeb 11, 2009

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