Dynamically vulcanized multi-component polymer blend
CA 2125682 C · Owner: Mathur, Saubhagya Chandra · Inventors: Mathur, Saubhagya Chandra
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dynamically vulcanized multi-component polymer blends are prepared containing thermoplastic polyolefins, non-vulcanized rubber and ethylene-vinyl acetate-maleic anhydride terpolymer crosslinked in situ. The dynamically vulcanized blend is prepared from a crosslinkable composition containing thermoplastic polyolefin rubber, non-crosslinked ethylene-vinyl acetate-maleic anhydride terpolymer, epoxy and tertiary amine. The , crosslinkable composition is crosslinked at an elevated temperature for sufficient time to crosslink the ethylene-vinyl acetate maleic anhydride terpolymer without substantial decomposition forming uniform dispersion of small particles of rubber and ethylene-vinyl …
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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
- Filed December 14, 1992 and granted June 20, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 14, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 14, 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
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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.