Multi-phase calcium silicate hydrates, methods for their preparation, and improved paper and pigment products produced therewith
CA 2382869 C · Owner: G.R. Technologies, Llc · Inventors: Mathur, Vijay K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for the hydrothermal preparation of calcium silicate hydrates. Multiphase calcium silicate hydrates, having unique physical and chemical properties are prepared by hydrothermal , reaction of specified ratios of CaO and SiO2 normally , starting from slurries of slaked lime and from fluxed calcined diatomaceous earth, each of which is at about the atmospheric boiling point before being mixed and charged to a reactor and pressurized. The , hydrothermal reaction is carried out while maintaining the initial dilution for a preselected reaction time at a preselected reaction temperature. The calcium silicate hydrates produced have high water absorption and light scattering power and …
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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 August 26, 2000 and granted April 2, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 26, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 26, 2022.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.