Water repellent composition
CA 2360480 A1 · Owner: Asahi Glass Company, Limited · Inventors: Kaneko, Kyoichi; Maekawa, Takashige; Shimada, Toyomichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A water repellent composition comprising the following polymer (A) and the following polymer (B) wherein the polymer (A) and the polymer (B) are not present in the same particles:, Polymer (A): an addition polymer comprising at least 60 mass% of polymerized units of the following polymerizable monomer (a) and at most 40 mass% (inclusive of 0 mass%) of polymerized units of the following polymerizable monomer (b), and, if necessary polymerized, units of a polymerizable monomer (x) other than the polymerizable monomers (a) and (b), wherein the total of the polymerized units of the polymerizable monomer (a) and the polymerized units of the polymerizable monomer (b) is at least 70 mass%; and, …
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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 30, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 30, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 30, 2023.
- 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.