Aluminum hydroxide aggregated particles, process for producing the same, vessel used therefor, and process for producing aluminum hydroxide powder
CA 2411161 A1 · Owner: Kato, Hisakatsu · Inventors: Sasaki, Hirofumi; Wada, Masashi; Kato, Hisakatsu
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Its claims, description and drawings are in the Canadian Patents Database.
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Aluminum hydroxide aggregated particles which have an average particle diameter of not less than 40 Vim, an average particle diameter as determined after pressing at 1,000 kg/cm2 of not more than 35 µm and an, L value of slurry obtained by mixing 20 ml of glycerol and 10 g of the aluminum hydroxide aggregated particles of not more than 69, are obtained by a process comprising the steps of:, (a) feeding a supersaturated aqueous sodium aluminate solution to a vessel, (b) adding aluminum hydroxide seeds to the supersaturated aqueous sodium aluminate solution (c) stirring the seed-added solution in the vessel while continuously feeding an additional supersaturated aqueous sodium aluminate …
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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 5, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 5, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 2024.
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