Synthetic, crystalline aluminosilicate, method for its preparation as well as its use
CA 2020580 C · Owner: Alsi-Penta Zeolithe Gmbh · Inventors: Unger, Klaus; Thome, Roland; Tissler, Arno
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
14, synthetic crystalline aluminosilicate is prepared by an inorganic process from a reaction mixture which contains in, an aqueous alkaline medium SiO2 and A1 2O3 or their hydrated derivatives or alkali silicates and, aluminates mineralizers, and optionally seeding crystals the reaction mixture , containing SiO2/A12O3 in molar ratio of 15 - 40 OH-/siO2 in molar, radio 0.1 - 0,2, and H20/Si02 in molar ratio 20 - 60. The aluminosilicate produced by the process has a chemical composition expressed in molar ratios as: 0-3 M20 : Al203 : 15 - 40 Si0 2 : 0 - 40 H2O, where M represents an alkali cation. The aluminosilicate is useful in the preparation of catalysts and adsorbents.
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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 6, 1990 and granted February 22, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 6, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 2012.
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Timeline
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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.