Process for upgrading a hydrocarbon oil
CA 2260649 A1 · Owner: Sudhakar, Chakka · Inventors: Caspary, Mark T.; Sudhakar, Chakka; Decanio, Stephen J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for treating a hydrocarbon oil feed to reduce total acid number (TAN) and increase API gravity employs a catalyst which includes one or more metals of non-noble Group VIII of the periodic table (e.g. iron cobalt , and, nickel), and at least one metal selected from Group VIB (e.g. chromium tungsten, and molybdenum) on a phosphorus treated carbon support the phosphorus treated, carbon support being comprised of phosphorus bound to the carbon surface predominantly as polyphosphate species characterized by peaks between -5 and - 30, ppm in the solid-state magic angle spinning 31P nuclear magnetic resonance spectrum. The process includes blending the catalyst with the hydrocarbon oil …
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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 February 2, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 2, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 2, 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.