Stabilized pvp-i solutions
CA 2062001 C · Owner: Bhagwat, Dileep · Inventors: Bhagwat, Dileep; Oshlack, Benjamin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Povidone-Iodine (PVP-I) solutions stable according to U.S.P. standards and a method for preparing the same are disclosed. The PVP-I solution includes a microbicidal effective amount of available iodine and an alkalinizing agent in an effective amount to maintain the stability of the solution according to U.S.P. standards when said solution is stored in a glass container, the solution being non-buffered. In preferred embodiments, the iodophor solution is a microbicidal PVP-I solution for ophthalmic use.
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 February 27, 1992 and granted March 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 27, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 27, 2014.
- 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.