Germicidal detergent-iodine compositions including polyvinyl pyrrolidone and compatible nonionic surfactant complexors
CA 2204263 C · Owner: Winicov, Murray W. · Inventors: Winicov, Murray W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Stable, aqueous complexor-iodine germicidal use compositions and concentrates adapted for application to animal or human skin are provided which have desirable complexor:iodine ratios of from about 2-4.5. The compositions and concentrates preferably include a polyethoxylated polyoxypropylene block copolymer (Poloxamer) as the complexing agent wherein the polyoxypropylene , moiety has an average molecular weight of at least 2600 and a polyoxyethylene content of from about 30 % - 75 % by weight in combination with from about , 0.1 % - 5 % by weight avergea available iodine on a nominal basis. Use of the defined class of Poloxamers allows formulation of both high and low temperature …
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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 26, 1995 and granted June 20, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 26, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 26, 2017.
- 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
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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.