Method for producing calcium chloride scales and a use of the method
CA 2228586 C · Owner: Hoyer, Friedrich · Inventors: Hoyer, Friedrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the method, calcium chloride scales (75) are produced on a cooled surface (20), namely through the application of a layer (70) consisting of an aqueous CaCl2 solution (7) to the cooled surface, solidification of the layer and stripping off the solidified layer. The solution contains less than 70 % CaCl2 by weight, preferably less than 65 % CaCl2 by weight. The layer thickness is set to a maximum of about 1 mm. A relative speed between the point of application of the solution and the cooling surface is produced so that a specific production rate of at least 20 g/s m2 is connected with this relative speed. The heat is carried off so rapidly through the cooling surface that the solidified …
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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 February 4, 1998 and granted January 23, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 4, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 4, 2020.
- 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.