Fine composite particles and their production method
CA 2506590 A1 · Owner: Sugiyama, Norihide · Inventors: Sugiyama, Norihide
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Fine core/shell type composite particles which comprise fine inorganic nanometer-size particles as cores and a fluoropolymer comprising units derived from a fluoromonomer as shells; a process for producing the particles; and a use of the particles. The particles comprise fine inorganic nanometer-size particles whose surface has been coated with a fluoropolymer comprising units derived from a fluoromonomer, wherein the proportion of the fine inorganic particles is 1 to 90 wt.% and the fluoropolymer comprises units derived from a fluoromonomer having a polymerizable unsaturated group in which a carbon atom has a fluorine atom bonded thereto. The process which is for producing the , …
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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 November 19, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have 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.