Polyphenylene ether resin compositions containing olefin polymer or copolymer
CA 1267741 C · Owner: Lee, Gim F. Jr. · Inventors: Lee, Gim F. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Thermoplastic compositions of polyphenylene ether resin and a diblock copolymer of an alkenyl aromatic compound and a conjugated diene (which optionally can be hydrogenated), containing polyolefin resin in large amount, are described. The compositions are moldable into articles which do not exhibit the brittleness and tendency toward delamination often associated with use of large amounts of polyolefin in polyphenylene ether resin compositions.
Read the whole patent
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 April 10, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2007.
- 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
Timeline From CIPO dates
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.