Composite backerboard articles for construction
CA 2397766 A1 · Owner: Born, David W. · Inventors: Born, David W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fabricated article made from two or more discrete sections of a single composite board. The composite board has a planar core with opposing first and second flat sides and a coating of solidified cement-like mortar disposed on , at least one side of the core. The coating has a reinforcement layer disposed therein. Form one or more shapes or cuts in the board that extend through one first side of the core and any coating thereon (with embedded reinforcement layer) and through the second side of the core but not through the coating , and reinforcement layer of the second side. Fabricate the article by bending the two or more discrete sections at the shape or cut and joining them in a …
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 January 5, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 5, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 5, 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.