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Expired Canadian patentCanada

Ice making machine and method

CA 1208027 A · Owner: Sunwell Engineering Company Limited · Inventors: Goldstein, Vladimir

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

In a continuous ice making process the brine is cooled, from heat exchange relation with the side of a chamber at a rate of at least 4000 BTU's per square foot of container wall per hour and the sides of the chamber are continuously mechanically scoured at a rate fast enough to prevent the formation of ice on the wall of the chamber. The cooled brine scoured from the wall of the chamber is directed to the body of the mixture to cool it and form ice crystals therein.

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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 July 22, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 22, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 19, 1984
GrantedJuly 22, 1986
Term endedJuly 22, 2003
Patent numberCA 1208027 A
Classification (IPC)F25C1/00 +2 more

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedJune 19, 1984Patent grantedJuly 22, 1986Term endedJuly 22, 2003

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.