Soluble analogs of probucol
CA 2134679 C · Owner: The Regents Of The University Of California · Inventors: Parthasarathy, Sampath
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a class of water-soluble probucol derivatives having one or more ester groups replacing the phenyl hydroxyl groups of the probucol molecule. Some derivatives have polar or charged functionalities such as carboxylic acid groups amino groups, aldehyde groups and amide groups located on the ester groups. Some of these compounds are spontaneously hydrolyzable in typical biological milieus. The present invention also provides method of treating an animal with probucol by administering a water-soluble probucol prodrug to the animal.
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 30, 1993 and granted November 25, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 30, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2015.
- 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.