Polyphenylene ether resin compositions containing epdm rubber-modified alkenyl aromatic resins and hydrogenated aromatic resins and hydrogenated elastomeric block copolymers
CA 1104736 A · Owner: General Electric Company · Inventors: Haaf, William R.; Cooper, Glenn D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel compositions are disclosed which include a polyphenylene ether resin, a small-particle EPDM rubber-modified alkenyl aromatic resin, and a hydrogenated A-B-A block copolymer. Also included within the scope of this invention are reinforced and flame-retardant compositions of said polyphenylene ether resin, said alkenyl aromatic resin modified with an EPDM rubber, and said hydrogenated elastomeric block copolymer.
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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 July 7, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 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.
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.