High rubber graft thermoplastic compositions with improved mechanical properties prepared by melt blending
CA 2083325 A1 · Owner: Jalbert, Ronald L. · Inventors: Laughner, Michael P.; Scobbo, James J. Jr.; Halley, Robert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
High Rubber Graft Thermoplastic Compositions with Improved Mechanical Properties Prepared by Melt Blending High rubber graft thermoplastic compositions are prepared by melt blending an EPDM or an EP rubber and a copolymer derived from a vinyl cyanide compound and a vinyl aromatic compound. Both the copolymer and the rubber are independently either epoxy or carboxy functionalized.
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
- Filed November 19, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 19, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 19, 2014.
- 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.