Process and plant for the production of urea with high conversion yield and low energy consumption
CA 2259872 A1 · Owner: Pagani, Giorgio · Inventors: Pagani, Giorgio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a process for the production of urea substantially pure, ammonia and carbon dioxide are reacted in a reaction space wherefrom there exits a reaction mixture which is sent to a urea recovery section. From the recovery section a, carbamate diluted solution is obtained which is submitted to stripping with recycling of vapours to the reaction space, on prior condensation of the same. This process allows to achieve a high conversion yield at low energy consumption and implementation costs.
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
- Filed January 22, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 22, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 22, 2021.
- 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.