Novel fine particulate synthetic chalcoalumite compounds, process for their production and heat insulator and agricultural film containing the fine particulate synthetic chalcoalumite compounds
CA 2278846 A1 · Owner: Kyowa Chemical Industry Co. Ltd. · Inventors: Takahashi, Hideo; Okada, Akira
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel, fine particulate synthetic chalcoalumite process for, preparation thereof, and a heat insulating agent and agricultural film containing said fine, particulate synthetic chalcoalumite. The above objects are met by synthetic chalcoalumite represented by formula (1) below:, (M 1 2+)a-x(M2 2+)x Al3+4 (OH)b (A n-)c ~mH2O (1) (in which M1 2+ stands for Zn z+ or Cu 2+ M2 2+ is at least one divalent metal ion selected from Ni 2+ Co 2+, Cu 2+, Zn 2+ and Mg 2+, a is 0.3 < a < 2.0 (with the proviso that M1 and M2 are not the same), x is 0 ~ x <1.0, b is 10 < b < 14 A n- is at least one selected from SO 4 2- HPO 4 2-, CO 3 2-, SO 3 2-, HPO3 2-, NO 3- H2PO4-, Cl-, OH- and silicic ion, c is 0.4 < …
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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 July 26, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 26, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 26, 2021.
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