Osmotic continuous dispensing oral delivery system containing a moderately water-soluble metoprolol salt having improved core composition and use thereof
CA 1312016 C · Owner: Novartis Ag · Inventors: Lee, Shih-Wei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
4-16168/=/CGC 1232, OSMOTIC CONTINUOUS DISPENSING ORAL DELIVERY SYSTEM CONTAINING A MODERATELY WATER-SOLUBLE METOPROLOL SALT HAVING IMPROVED CORE COMPOSITION AND USE THEREOF, ABSTRACT OF THE DISCLOSURE An osmotic dispensing oral delivery system containing a moderately water-soluble metoprolol salt for total delivery of between about 50 and about 500 mg of metoprolol wherein from about 60 up to about 90 percent of said metoprolol is released in the gastro-intestinal tract at a substantially continuous rate of about 5 to about 12 percent by weight per hour comprising: a) a semipermeable shaped wall membrane substantially impermeable to said salt and permeable to gastrointestinal fluid, b) a …
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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 December 29, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 29, 2009.
- 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.