Complexes of nitric oxide with polyamines
CA 2091994 C · Owner: The United States Of America, Represented By The Secretary, U.S. Department Of Commerce · Inventors: Keefer, Larry Kay; Hrabie, Joseph Anthony
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There are disclosed novel complexes of nitric oxide and polyamines which are useful in treating cardiovascular disorders including hypertension. The disclosed compounds release nitric oxide (endothelium-derived relaxing factor) under pysiological conditions in a sustained and controllable fashion and possess long , mechanisms of action.
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 September 20, 1991 and granted January 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 20, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 20, 2013.
- 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.