Improved hydroconversion process employing catalyst with specified pore size distribution
CA 2093410 C · Owner: Nongbri, Govanon · Inventors: Nongbri, Govanon; Nelson, Gerald Verdell; Dai, Pei-Shing Eugene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Heavy oils may be hydrotreated in the presence of a porous alumina support bearing metals of Group VIII and VI-B and optionally phosphorus, the catalyst having a Total Surface Area of 165-230 m2/g, a Total Pore Volume of 0.5-0.8 cc. g, and a Pore Diameter Distribution whereby less than about 5% of the Total Pore Volume is present as primary micropores of diameter less than 80A, and secondary micropores of diameter of ~ 20A of a Pore Mode of 100-135A are present in amount of at least about 65% of the micropore volume having pores with diameter less than 250A, and 22-29% of the Total Pore Volume is present as macropores of diameter >250A. The process of the instant invention is particularly …
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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 April 5, 1993 and granted September 3, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 5, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 5, 2015.
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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.