Stable solid preparation of thiol ester derivative
CA 1285487 C · Owner: Chugai Seiyaku Kabushiki Kaisha · Inventors: Ikushima, Heiji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure:, A stable solid thiol ester derivative preparation which contains as active ingredients a thiol ester derivative or a salt thereof, a water-soluble wax which is solid at ordinary temperatures, and sodium carboxymethyl starch and/or a monovalent electrolyte. Thiol ester derivatives are very useful as drugs but, in a solid state they are, sensitive to moisture. A stable solid preparation of thiol ester derivative is obtained by mixing the above additives and/or a monovalent electrolyte into a thiol ester derivative.
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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 July 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2008.
- 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
Timeline From CIPO dates
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.