Preparation of i5- polyiodide disinfectant resins
CA 2018667 C · Owner: Kansas State University Research Foundation · Inventors: Bridges, Ronald L.; Lambert, Jack L.; Fina, Louis R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is provided for strong base anion exchange resins containing high concentrations of pentaiodide (I5-). The resins are prepared from highly concentrated solutions of I5- and I3 - ions. The exchanged ions, such as chloride (Cl-) are washed out, of the resin after completion of the exchange reaction with the polyiodide ion mixture. The resulting product is a stable resin of predetermined I5- content which, is highly effective as a disinfectant for water acting, against water-borne bacteria, virus an Giardia.
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 June 11, 1990 and granted July 7, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 11, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2012.
- 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.