Process and apparatus for the freeze concentration of solutions
CA 1069427 A · Owner: Zondek, Klaus · Inventors: Zondek, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is directed to freeze concentration of liquid mixtures including solutions by the direct contacting in at least two stages of the mix-, ture with a miscible refrigerant. After the contacting of the refrigerant with the liquid mixture there is provided a first stage crop of substantially pure crystals of a mixture component which is separated from the mother liquor. The mother liquor is then further cooled and crystallized in further stages. Any crystals from said further stages are returned to the first or proceeding stage. This concentrates the second stage and further stage mother liquors. This process is applicable to the freeze concentration of juices, coffee or tea …
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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
- Granted January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 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.
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.