Method and apparatus for automatic production of blocks of solid co at low pressure
CA 2125292 A1 · Owner: Liquid Carbonic Corporation · Inventors: Izquierdo, Jose Marco Antonio Anaya; Rhoades, George David; Gyger, Roger Frederick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus to automatically produce blocks of solid CO2 at low pressure. The apparatus includes at least one closed mold (13, 15) coupled to a liquid CO2 conditioner (37) and a CO2 gas recovery system (19), and a control panel (63) for automatic operation. The method consists in supplying liquid CO2 to this mold (13, 15) at a low pressure in order to fill the mold with CO2 snow of low density during a definite period of time to , then raise the pressure inside the mold (13 15) to an, intermediate pressure by supplying liquid CO2 at this pressure (and at a temperature of approximately -40 ·C) to form a dense mass of solid CO2 which after a definite time will block the admission …
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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 December 11, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 11, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.