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Expired Canadian patentCanada

Flame resistant resin composition

CA 1196437 A · Owner: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha · Inventors: Nishigaki, Masahiko; Tonoki, Satoshi; Hirobe, Kazushi

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Abstract From the Canadian patent

A flame resistant resin composition comprising (a) a synthetic resin, (b) red phosphorus coated with a thermosetting resin and (c) a filler. The coated red phosphorus is useful as a flame retardant for various synthetic resins, particularly thermoplastic polyesters such as polyalkylene terephthalates, and can impart the flame resistance to the resins without impairing heat stability and electric characteristics. The use of the coated red phosphorus in combination with talc is particularly preferred.

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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 November 5, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 5, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 15, 1982
GrantedNovember 5, 1985
Term endedNovember 5, 2002
Patent numberCA 1196437 A
Classification (IPC)C08L67/06 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedDec 15, 1982Patent grantedNov 5, 1985Term endedNov 5, 2002

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