Process for regeneration of mixed anion and cation exchanged resins
CA 1080376 A · Owner: Mitsubishi Chemical Industries Ltd. · Inventors: Naka, Mitsugu; Kusano, Hiroshi; Yokota, Kenji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A regeneration of mixed anion and cation exchange resins is carried out by back-washing the mixed anion and cation exchange resins to separate them as an upper layer a, middle layer and a lower layer, regenerating respectively the upper layer and the lower layer and mixing the separated middle layer of the mixed resins in a step before the backwashing step in the next or following regeneration process.
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
- Granted June 24, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 24, 1997.
- 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.