Method of making rotationally moulded parts having nano-particle reinforcement
CA 2356221 A1 · Owner: Wilson, Phillip S. · Inventors: Wilson, Phillip S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of producing reinforced articles comprises (a) preparing a powder composition of at least one thermoplastic and about 2 % to about 15 % by volume reinforcing particles. The reinforcing particles are substantially uniformly dispersed in the thermoplastic. At least 50 % of the reinforcing particles are less than about 20 layers thick the layers of the reinforcing , particles having a unit thickness of between about 0.7 nm - 1.2 nm; (b) heating the powder into a molten material; (c) rotating the molten material in a mold cavity so that the molten material conforms to the surfaces of the mold cavity, the molten material having substantially the same uniformity of dispersion of …
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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 17, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 17, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 17, 2021.
- 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.