Process and apparatus for membrane cleaning
CA 2411935 A1 · Owner: Kuppinger, Franz-Felix · Inventors: Kuppinger, Franz-Felix; Penth, Bernd; Hying, Christian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method and device for carrying out electrofiltration. Electrofiltration is a commonly known method which is , frequently used in industry for purifying suspensions such as wastewater , resulting from manufacturing processes. Prior art devices used for carrying out electrofiltration have the drawback in that large amounts of expensive metals such as titanium, gold, iridium platinum and the like have to be used as counter-electrodes to the membrane electrodes. The aim of the invention is to improve the filtration results compared to those of conventional filtration methods and modules without requiring the use of large amounts of expensive metals for the …
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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 29, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 29, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 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.