Thermoplastic composition of polyphenylene ether, ethylene-methacrylic acid copolymer, and styrene-cylcidyl methacrylate copolymer
CA 1256620 A · Owner: General Electric Company · Inventors: Fujii, Susumu; Ting, Sai-Pei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel polyphenylene ether compositions having good chemical resistance, tensile and impact properties are injection moldable without delamination near the gate. The preferred compositions comprise a polyphenylene ether, a high impact polystyrene a styrene-, ethylene/butylene-styrene copolymer a poly(ethylene-, co-methacrylic acid) and a poly(styrene-co-glycidyl methacrylate), and optionally polyethylene.
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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 June 27, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 27, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.