Integrated two reaction zone process for c4, c5 and c6 isomerization
CA 2045356 C · Owner: Uop · Inventors: Johnson, Brian H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A C4 feedstock and a C5-C6 feedstock are isomerized in a process that reduces equipment and operating expenses by utilizing a process flow scheme that, provides beneficial heat integration and facilitates the use of common recovery, zone while permitting a wide variation in the relative ratio of a C4 to a C5- C6, feedstock. The isomerization of the C4 feedstock first takes place in a separate, reaction zone. The effluent from the C4 isomerization zone is heat exchanged against or mixed with the C5-C6 feedstock ahead of an additional isomerization zone that converts the C5-C6 hydrocarbons and if present, normal C4, hydrocarbons to more highly branched hydrocarbons. Effluents from both …
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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 June 25, 1991 and granted August 21, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 25, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 25, 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.