Manufacture of ceramic tiles from industrial waste
CA 2274457 A1 · Owner: Hnat, James G. · Inventors: Simpson, James C.; Sanavia, Maurizio; Hnat, James G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a process of forming ceramic tiles having the appearance of tiles produced from clays. The process includes melting a material to form a glass melt, treating the glass melt to produce a solid glass product, grinding the solid glass product to produce glass particles having a particle size of less than 200 microns mixing the glass particles , with a first additive to form a glass powder mixture having a composition of 55 to 99 wt.% glass particles and 45-1 wt.% first additive forming the glass , powder mixture into tiles by dry pressing where the tiles have a primary , crystalline phase selected from the group consisting of nepheline diopside, anorthite, …
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 September 29, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 29, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 29, 2019.
- 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.