Oxygenate treatment of dewaxing catalyst for greater yield of dewaxed product
CA 2498926 C · Owner: Bishop, Adeana Richelle · Inventors: Genetti, William Berlin; Page, Nancy Marie; Bishop, Adeana Richelle
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Fischer-Tropsch hydrocarbon synthesis using a cobalt catalyst is used to produce waxy fuel and lubricant oil hydrocarbons from synthesis gas derived from natural gas. The waxy hydrocarbons are hydrodewaxed with reduced , conversion to lower boiling hydrocarbons by contacting the waxy hydrocarbons, in the presence of hydrogen with an unsulfided 10-ring, 1-dimensional zeolite catalyst that has been reduced and then treated by contacting it with the synthesized hydrocarbons containing one or more oxygenates including , indigenous oxygenate. Tail gas from the hydrodewaxing reactor can be used for the hydrocarbon synthesis.
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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 October 7, 2003 and granted July 23, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 7, 2025.
- 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
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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.