Water resistant plaster-based construction element
CA 2298347 A1 · Owner: Martin, Daniel · Inventors: Molines, Gerard; Martin, Daniel; Bold, Jorg
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process of manufacturing at least a portion of a plaster-based water resistant, construction element including the steps of :mixing together a dry material comprising at least a major portion of hydratable calcium sulfate a water, repellency agent, and hydrating water to form a homogenous mixture; preforming in the wet state the said portion of said construction element from said, homogeneous mixture; drying the said preformed portion in order to obtain a formed portion in the solid, dry state; and heating said formed portion for a predetermined time in an enclosure with a moist atmosphere and at a controlled temperature which is lower than that which causes in any zone of the element , …
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 February 9, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 9, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 9, 2022.
- 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.