Polymeric nanocomposites
CA 2450150 C · Owner: Cole, Kenneth · Inventors: Utracki, Lechoslaw Adam; Denault, Johanne; Ton-That, Minh-Tan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a nanocomposite comprising a nano- reinforcing material (e.g. layered clay) a polymer matrix (e.g. a polyolefin), and an epoxy-functionalized graft polymer compatible with the polymer matrix (e.g. epoxy-grafted polyolefin). Such nanocomposites are useful in the fabrication of a variety of materials including parts for the transportation and packaging industries electronics, business equipment, building and construction materials.
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, 2003 and granted January 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 19, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 19, 2025.
- 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.