Aqueous paint additive for staining inhibition and procedure
CA 2276439 A1 · Owner: Sinko, John · Inventors: Sinko, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tannin stain inhibiting latex paint composition for application to wood based on an alkaline latex suspension of a polymer in water is provided with a tannin-stain inhibiting additive. The additive includes effective amount for stain inhibition of a non-acidic compound selected from ammonium zirconium carbonate, sodium zirconium carbonate or potassium zirconium carbonate.
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 December 22, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 22, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 22, 2019.
- 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.