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Expired Canadian patentCanada

Fiberglass reinforced halobisphenolethylene polycarbonates

CA 1114539 A · Owner: General Electric Company · Inventors: Kinson, Philip L.; Detorres, Pablo D.

CIPO record

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Abstract From the Canadian patent

A thermoplastic composition comprising halobisphenolethylene polycarbonates containing glass fiber reinforcing agents is described. These compositions exhibit improved notched Izod impact properties as well as excellent flame retardancy characteristics. The fiberglass reinforced polycarbonates can be solution cast, molded and extruded and, formed into films, sheets fibers or laminates or other, articles of manufacture by conventional techniques.

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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 December 15, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 15, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 3, 1977
GrantedDecember 15, 1981
Term endedDecember 15, 1998
Patent numberCA 1114539 A
Classification (IPC)C08L69/00

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedMarch 3, 1977Patent grantedDec 15, 1981Term endedDec 15, 1998

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