Method for manufacturing ice and apparatus therefor
CA 1296534 C · Owner: Ebinuma, Takao · Inventors: Sudo, Masanobu; Inoue, Masanori; Ebinuma, Takao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for manufacturing ice comprising the steps of supplying gas into a pressure-resistant vessel containing ice grains, pressure of the supplied gas being kept increased; applying press force to the ice grains to increase density of the ice grains, contact portions of the ice grains being allowed to be melted; and cooling the ice grains in, the state of being pressed, to allow the ice grains to be frozen. Gas to be introduced into the vessel is at least one selected from those of air, oxygen and carbon dioxide. An apparatus used for the method is also provided.
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 March 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 3, 2009.
- 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.