Adsorption/reaction equipment
CA 2111052 C · Owner: Ishida, Hiroshi · Inventors: Matsumura, Shuzo; Ishida, Hiroshi; Izumi, Kiyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An adsorbent/reaction equipment is provided wherein extremely fine adsorbent particles can be separated without the use of a precoating agent. In particular, the present invention can continuously regenerate the spent adsorbent component. A filtration device is disposed inside a reaction tank and submerged in a slurry of adsorbent therein contained. A plurality of filtering membrane elements each incorporating a filtering membrane, are disposed in parallel with each other in the vertical direction inside of a casing of the filtration device, at predetermined intervals between surfaces of adjoining filtering membranes. The filtering membranes are such that they include through-holes of a …
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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 December 9, 1993 and granted March 30, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 9, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 2015.
- 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.