Process and device for disintegrating spent ion exchange resins
CA 2066741 A1 · Owner: Ghattas, Klara-Maria · Inventors: Ghattas, Nader K.; Ghattas, Klara-Maria
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for disintegrating special organic waste in, particular spent ion exchange resins is carried out with, hydrogen peroxide and a catalyst at temperatures between 105 and 135°C in a thermally insulated funnel reactor (1). The residual liquid is continuously filtered into a terminal reservoir (5) from where it is returned to the reactor (1) for evaporation purposes. The course of the reaction is controlled by means of a control device (ST) which controls the dosing means (13, 14, 15, 64) and regulating means (12A 63, 16) in accordance with signals from temperature level and, activity indicators (7, N1, N2 A1, A2). The waste gas is, condensed and filtered.
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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 August 8, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 8, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 8, 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.