Liquid carbon dioxide injection in exothermic chemical reactions
CA 2081920 C · Owner: Liquid Carbonic Corporation · Inventors: Wallace, David Eric; Merritello, Ronald John; Zyzda, Leonard Emil
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is directed to a method for carrying out an exothermic chemical reaction with carbon dioxide (15) in an aqueous environment (11). A fluid solution containing at least one chemical reactant which is exothermically reactive with carbon dioxide is reacted with liquid carbon dioxide injected (31) at a pressure above its triple point of at least 60 psig. The injection takes place under turbulent conditions (33) wherein the liquid carbon dioxide vaporizes. The carbon dioxide vapor superheats to approach the exothermic reacting temperature which occurs between the carbon dioxide vapor and the chemical reactant during the exothermic production of a chemical reaction product. The flow …
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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 March 27, 1991 and granted February 18, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 27, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 27, 2013.
- 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.