Waterborne coating compositions
CA 2553152 A1 · Owner: The Sherwin-Williams Company · Inventors: Sweitzer, Gerald M.; Mullen, Brian A.; Patka, John J. Sr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to a waterborne coating composition prepared from liquid blend, raw materials, such as titanium dioxide slurries extender pigment slurries, thickener slurries glycol slurries, and latex binders. The liquid blends have substantially the same viscosity, characteristics as the final waterborne coating composition in the range of , about 70-125 Krebs, units. The method for preparing the waterborne coating composition of the invention comprises, providing a plurality of the liquid blend raw materials and admixing the liquid blend raw, materials to produce the waterborne coating product. This invention is also directed to pigment, slurry compositions useful …
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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 30, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 30, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 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.