Process for enhanced urea production
CA 1332426 C · Owner: Commonwealth Scientific And Industrial Research Organisation · Inventors: Brown, Anthony Martin; Linton, Max
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the production of urea comprises the steps of reacting carbon dioxide and ammonia to form ammonium carbamate and subsequent decomposition of ammonium carbamate to form a reaction mixture comprising urea and water, wherein the reaction mixture is contacted with one side of a semi-permeable membrane and a drying, fluid capable of removing water and possibly other reaction product(s) from the reaction mixture is contacted with the other side of the semi-permeable membrane.
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 October 11, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 11, 2011.
- 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.