Method for regenerating adsorbent
CA 2439455 A1 · Owner: Yoda, Toshiaki · Inventors: Suzuki, Motoshi; Yoda, Toshiaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for regenerating an adsorbent having adsorbed a persistent substance characterized in that the persistent substance is contacted with a microbe and/or an enzyme in the interior or at the periphery of pores of the adsorbent to thereby decompose the substance. The method allows an adsorbent having adsorbed a persistent substance, such as bis-phenols harmful to living things , to be completely decomposed and removed and thus allows the adsorbent to be regenerated, without adverse effect on the environment by secondary pollution.
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 February 26, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 26, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 2024.
- 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.