Stain resistant acoustical panels
CA 2415135 A1 · Owner: Caldwell, Kenneth G. · Inventors: Vazquez, Alejandrino; Belmares, Hector; Caldwell, Kenneth G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a stain resistant acoustical panel. The panel may incorporate within its, structure a relatively small quantity of latex which forms an ultra thin coating within the panel, such that water may pass through the inner structure of the panel. Furthermore, the panel may, have a coating or primer applied to the facing side of the panel to prevent water stains. The, coating contains a chelating agent which provides stain resistance to the coated face of the panel. Additionally the panel may incorporate both latex within its structure and a primer coating, comprising a chelating agent.
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 24, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 24, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 24, 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.