A method and a machine for treatment of water, especially when producing ice, particularly ice cubes
CA 2260247 A1 · Owner: Lilleaas, Dag F. · Inventors: Lilleaas, Dag F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a method for treatment of water, especially when freezing water to ice particularly in the form of ice cubes in a machine water is passed over a , freezing plate (14) with refrigeration elements for cooling and/or forming ice on the plate. The water which has to be cooled or frozen is first exposed to a boiling process, the water either being taken from a store of boiled water and/or passed through a boiling device (6) with heating to a temperature area of the boiling temperature, preferably 80-100 ~C in the actual ice making machine. The water is thereby exposed to a combination of boiling and a subsequent cooling effect or freezing. A machine is also described for use with 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 July 4, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 4, 2019.
- 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
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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.