Modified clays, preparation thereof and therapeutical compositions containing the same
CA 1203177 A · Owner: Societe De Conseils De Recherches Et D'Applications Scientifiques (S.C.R .A.S.) · Inventors: Rene, Michel; Plantefeve, Jean-Claude
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to modified clays comprising a sheet-silicate clay - with a plate separation of from 1.5 to 1.6 nm, with a cation exchange capacity of from 170 to 1700 mEq per 100 g - combined with 0.05 to 0.5 part in weight of magnesium hydroxide per part of clay, and acidic addition products of the same. The invention relates also to a preparation process of these clays, consisting in treating at a temperature between 50°C and about 140°C, possibly under pressure one part of an appropriate sheet-silicate clay by 0.05 to 0.5 part of magnesium hydroxide for about 3 hours to about 24 hours. The invention relates, finally to therapeutic composition of matter comprising as an essential …
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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
- Granted April 15, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 15, 2003.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.