An electrolytic process for the generation of stable solutions of chlorine dioxide
CA 2429908 C · Owner: Kelley, Joseph M. · Inventors: Kelley, Joseph M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Chlorine dioxide gas dissolved in water is produced by passing a solution of stabilized chlorine dioxide or a sodium chlorite solution, with or without added sodium chloride through an , electrolytic cell having an anode and cathode in the absence of , a semi-permeable membrane but in the presence of a buffer. An anolyte with a pH below 10 is produced so that disproportination of the ClO2 in not appreciable.
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 January 16, 2001 and granted May 17, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 16, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 16, 2023.
- 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.