Anti-infective and lubricious medical articles and method for their preparation
CA 2004367 C · Owner: Solomon, Donald D. · Inventors: Solomon, Donald D.; Khan, Mohammad A.; Byron, Matthew P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A substantially hydrophilic polymeric medical article has a coating of chlorhexidine and a silicone on its surface and may have chlorhexidine bulk distributed throughout the polymer. The invention includes a method for preparing the article which includes dipping the article into a solution of chlorhexidine and silicone in a solvent. The method may also include preparing a melt of a substantially hydrophilic polymer having bulk distributed chlorhexidine by twin screw compounding a mixture of polymer and chlorhexidine and extruding the melt into the shape of the desired article prior to applying the coating.
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 December 1, 1989 and granted September 17, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 1, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 1, 2011.
- 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.