Methods for the controlled delivery of pharmacologically active compounds
CA 2522009 C · Owner: Murthy, Yerramilli V. S. N. · Inventors: Suva, Robert H.; Murthy, Yerramilli V. S. N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides compositions and methods for extending the release times and lowering the toxicity of pharmacologically active compounds. The compounds comprise a salt of the pharmacologically active compound with a lipophilic counterion and a pharmaceutically acceptable water soluble solvent combined together to form an injectable composition. The lipophilic counterion may be a saturated or unsaturated C8-C22 fatty acid and preferably may be a , saturated or unsaturated C10-C18 fatty acid. The compounds precipitate in aqueous environments. When injected into a mammal at least a portion of the , composition precipitates and releases the active compound over time. Thus …
Read the whole patent
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 April 15, 2004 and granted June 19, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 15, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 15, 2026.
- 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.