Apparatus for the production of chloric acid and perchloric acid
CA 2081370 A1 · Owner: Mendiratta, Sudhir K. · Inventors: Duncan, Budd L.; Woodard, Kenneth E. Jr.; Cawlfield, David W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrolytic filter press membrane cell (10) and a method of operating the cell to produce concentrated chloric and perchloric acid are disclosed. The cell employs concentrated hypochlorous acid as the anolyte and operates at high current density using a, two-stage single oxidation process to produce perchloric acid. The anode structure (21) employs a high surface area to volume ratio structure that is thin and, during the production of chloric acid, minimizes anolyte residence time in the cell.
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 March 26, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 26, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2013.
- 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.