Stable ready-to-use dosage forms containing coloring matter and active chlorine, and methods of making and using same as disinfectants
CA 2454592 C · Owner: Lipsicas, Leon · Inventors: Freedman, Shimon; Lipsicas, Leon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of producing a disinfectant or sterilizing liquid cream, ointment, paste, or gel by dissolving in a solvent a stable ready-to-use dosage form containing coloring matter and an organic chloroxidizer acting as a chlorine donor releasing active chlorine. The coloring matter is in its maximal level of oxidation. The chloroxidizer with coloring matter has a pH of 4 - 8 and is present in a sufficient quantity to disinfect or sterilize the surface vessel, or tissue as required while the colored appearance of the liquid cream, ointment, paste, or gel is stably maintained over a period of time which exceeds the period of time that the disinfectant would be normally used for that …
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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 July 16, 2002 and granted March 6, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 16, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 16, 2024.
- 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.