Coating composition for metal substrates
CA 2460083 C · Owner: Jackson, Paul Anthony · Inventors: Jackson, Paul Anthony; Davies, Gerald Howard (Deceased)
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a composition for coating a metal substrate which is intended to be fabricated and overcoated wherein the binder , comprises an acqueous silica sol having a SiO2/M2O mole ratio with M , representing the total of alkali metal and ammonium ions of at least 6:1, and , wherein the ratio of the pigment volume concentration to the critical pigment volume concentration is smaller than 1.
Read the whole patent
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 August 13, 2002 and granted April 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 13, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 13, 2024.
- 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.