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Expired Canadian patentCanada

Thermoplastic resin composition

CA 1329662 C · Owner: Okada, Takayuki · Inventors: Sanada, Takashi; Nishio, Taichi; Nagaoka, Kenji

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Abstract From the Canadian patent

A novel thermoplastic resin composition excellent in heat resistance, mechanical properties and processability is provided which comprises a composition containing (A) a dispersing phase of polyphenylene ether obtained by oxidation polymerization of at least one phenol compound represented by the formula:, wherein R1 R2, R3, R4 and R5 each represents a hydrogen atom, a halogen atom or a substituted or unsubstituted hydrocarbon residue and at least one of them is a hydrogen atom and (B) a crystalline thermoplastic resin matrix phase and (C) a mutual compatibilizer compatible with (A) and/or (B), an average particle diameter in said dispersing phase having of 0.01 - 10 µ.

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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 May 17, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 17, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 28, 1987
GrantedMay 17, 1994
Term endedMay 17, 2011
Patent numberCA 1329662 C
Classification (IPC)C08L71/12 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedSep 28, 1987Patent grantedMay 17, 1994Term endedMay 17, 2011

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