Ceramic material
CA 2083019 A1 · Owner: Farmer, Anthony D. · Inventors: Siviter, Carl; Farmer, Anthony D.; Chadwick, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lightweight ceramic material is provided useful for example as thermal insulation kiln, furniture or for metallurgical applications. Accordingly a lightweight fired ceramic, material comprises a set porous material in the form of a freeze-gelled ceramic sol composition containing hollow microspheres bonded together in a ceramic matrix. A method of making a lightweight fired ceramic shaped product is also provided in which a freezegellable ceramic sol composition is formed containing hollow microspheres, the composition is placed in a tool (21) of high thermal conductivity the tool is, cooled to irreversibly gel the sol composition the, monolith so formed is demoulded and allowed to thaw …
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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 November 16, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 16, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 16, 2014.
- 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.