Silicon dioxide-coated polyolefin resin and process for its production
CA 2323295 A1 · Owner: Sakai, Yasuto · Inventors: Saito, Yasuhiro; Sakai, Yasuto; Inomata, Hiroyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is to establish a process for production of highly durable organic silicon-based coatings with satisfactory adhesive property on polyolefin resins. A polyolefin resin wherein after hydrophilic treatment, of the surface of the polyolefin resin it is coated with a coating solution containing a silicon compound or its hydrolysate with an organic functional group represented by general formula (1): R1 n Si(R2)4-n (where R1 is an organic functional group with a methacryloxy group, R2 is one or a plurality of hydrolyzable groups selected from among alkoxyl groups acetoxyl groups and, chlorine, and n is an integer of up to 3) and then dried to, obtain a primary coating over …
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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 October 16, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 16, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 16, 2022.
- 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.