Method of preparing methanol
CA 2038530 C · Owner: Topsoe, Haldor F. A. · Inventors: Topsoe, Haldor F. A.; Hansen, John B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method of preparing methanol by reacting synthesis gas comprising hydrogen and carbon oxides (CO, CO2) in a fixed bed methanol synthesis catalyst, the improvement of which comprises reacting the synthesis gas at reaction conditions, where condensation of methanol occurs on the catalyst. In one embodiment of the invention a part of the condensed methanol as prepared in the catalyst bed is recycled from the catalyst bed effluent to the inlet of the catalyst bed.
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 March 18, 1991 and granted September 19, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 18, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 18, 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.