Dried aluminum hydroxide gel, a method for preparing the dried gel, and an antacid
CA 2127739 A1 · Owner: Fuji Chemical Industry Co. Ltd. · Inventors: Kawaguchi, Hiroshi; Machimura, Hitoshi; Ohtsuga, Akira
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The object of the present invention is to prepare a dried aluminum hydroxide gel featuring excellent acid neutrizing capacity, but which is also stable. A dried aluminum hydroxide gel with a chemical composition represented by the following general formulas:, (M2O)xAl2O3(CO2)yRz?mH2O or (M2O)x1(CaO)x2(MgO)x3Al2O3(CO2)yRz?mH2O (wherein M is a monovalent alkali metal and R is an organic acid with a valence of two or more. As a result of its organic acid content the gel is stable and can have a greater aluminum content thus improving the acid neutrizing capacity of the gel.
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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 11, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 11, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 11, 2016.
- 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
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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.