Stabilized solid form choline salicylate compositions
CA 1070299 A · Owner: Purdue Frederick Company (The) · Inventors: Sasmor, Ernest J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Choline salicylate is stabilized in solid form by means of a metal salicylate having a valence of at least 2, preferably aluminum, bismuth, calcium or magnesium salicylate. The composition is stabilized to a still greater degree by the addition thereto of carboxy-methyl cellulose. A still greater degree of stabilization is achieved by forming a complex of the choline salicylate metal salicylate, and carboxy-methyl cellulose. The complex is formed by preparing a solution of the carboxy-methyl cellulose choline, salicylate and metal salicylate permitting complexing re-, action to take place and drying. All of these stabilized forms of choline salicylate are used in solid dosage forms such as …
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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 January 22, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 22, 1997.
- 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.