Method of controlling water/hydrogen isotopic exchange reaction plant
CA 2018396 C · Owner: Doryokuro Kakunenryo Kaihatsu Jigyodan · Inventors: Kiyota, Shiko; Ninomiya, Ryuji; Kitabata, Takuya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of controlling a single temperature type water/hydrogen isotopic exchange reaction plant comprising an electrolytic system, an exchange reaction column and a recombining system for separating degraded heavy water into product and waste both of which have a stable concentration. The control method comprises controlling an extracting quantity of waste so that a heavy water concentration of water at an intermediate portion of the reaction column is kept constant, and controlling an extracting quantity of product so that a water quantity inside the exchange reaction plant is kept constant.
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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 June 6, 1990 and granted December 30, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 6, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 6, 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.