Process for the removal of polynuclear aromatic hydrocarbon compounds from admixtures of liquid hydrocarbon compounds
CA 1264694 C · Owner: Exxon Research And Engineering Company · Inventors: Hudson, Carl W.; Hamner, Glen P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process wherein a feed comprising an admixture of liquid hydrocarbon compounds including polynuclear aromatic hydrocarbon compounds (PNA's) is, contacted in the presence of hydrogen over a catalyst comprising elemental iron with one or more alkali or alkaline earth metals at a temperature sufficient to selectively hydrogenate and hydrocrack or destroy the, PNA's of the admixture without excessively hydrogenating and hydrocracking the non-PNA's of said feed.
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 January 23, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 23, 2007.
- 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.