Prestressed, strong foam glass tiles
CA 2532983 C · Owner: Buarque De Macedo, Pedro M. · Inventors: Buarque De Macedo, Pedro M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A prestressed, strong foam glass tile for use in construction. The prestressed, strong foam glass tiles of the present invention are capable of withstanding relatively large prestressing as a result of their relatively high compression strength. These prestressed foam glass tiles will absorb , and/or withstand more energy from an explosion withstand higher heat and wind , loading and other mechanical forces than traditional foam glass tiles. The foam glass tile of the present invention is strong enough that it can be prestressed over 1000 psi (1b./sq. in.) and more preferably over 2,000, 3,000, 4,000 and even more preferably over 5,000 psi. The prestressed strong , foam glass tiles of …
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 July 19, 2004 and granted September 25, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 19, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 19, 2026.
- 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.