Patents by Inventor Daniel F. Ryan
Daniel F. Ryan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6375830Abstract: A high VI and low pour point lubricant base stock is made by hydroisomerizing a high purity, waxy, paraffinic Fischer-Tropsch synthesized hydrocarbon fraction having an initial boiling point in the range of 650-750° F., followed by catalytically dewaxing the hydroisomerate using a dewaxing catalyst comprising a catalytic platinum component and an H-mordenite component. The hydrocarbon fraction is preferably synthesized by a slurry Fischer-Tropsch using a catalyst containing a catalytic cobalt component. This combination of the process, high purity, waxy paraffinic feed and the Pt/H-mordenite dewaxing catalyst, produce a relatively high yield of premium lubricant base stock.Type: GrantFiled: November 21, 2000Date of Patent: April 23, 2002Assignee: ExxonMobil Research and Engineering CompanyInventors: Janet R. Clark, Robert J. Wittenbrink, Daniel F. Ryan, Albert E. Schweizer
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Patent number: 6332974Abstract: A wide-cut lubricant base stock is made by hydroisomerizing and then catalytically dewaxing a waxy Fischer-Tropsch synthesized hydrocarbon fraction feed and comprises the entire dewaxate having an initial boiling point in the 650-75O° F.+ range. Formulated lubricating oils made by admixing the base stock with a commercial automotive additive package meet all specifications, including low temperature properties, for multigrade internal combustion engine crankcase oils. The waxy feed has an initial boiling point in the 650-750° F. range and continuously boils to an end point of at least 1050° F.+. Lower boiling hydrocarbons produced by the process are separated from the base stock by simple flash distillation. The base stock comprises the entire dewaxate having an initial boiling point in the 650-750° F. range.Type: GrantFiled: September 11, 1998Date of Patent: December 25, 2001Assignee: Exxon Research and Engineering Co.Inventors: Robert J. Wittenbrink, Daniel F. Ryan, Paul J. Berlowitz, Jacob J. Habeeb
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Patent number: 6294076Abstract: The invention is a process for producing a mixture of Fischer-Tropsch product that is solid at ambient conditions (between 32° F. and 95° F.), such as wax, and hydrocarbon liquid, such as naphtha, that can be pumped at ambient temperature (between 32° F. and 95° F.). The temperature of the mixture is controlled below the melting point of the Fischer-Tropsch product. The present invention provides for the transport of Fischer-Tropsch product from a remote location in a readily available medium, such as naphtha, via pipeline, tanker or railcar. At the completion of the transport, the hydrocarbon liquid and Fischer-Tropsch product are separated by conventional methods such as flashing, distillation, or filtration with minimal contamination from the hydrocarbon liquid.Type: GrantFiled: April 21, 2000Date of Patent: September 25, 2001Assignee: ExxonMobil Research and Engineering CompanyInventors: W. B. Genetti, L. L. Ansell, Daniel F. Ryan, Paul J. Berlowitz
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Patent number: 6294587Abstract: Fischer-Tropsch liquids, useful as distillate fuels are emulsified with water and a non-ionic surfactant.Type: GrantFiled: January 25, 1999Date of Patent: September 25, 2001Assignee: Exxon Research and Engineering CompanyInventors: Robert J. Wittenbrink, Paul J. Berlowitz, Tapan Chakrabaty, Loren L. Ansell, Daniel F. Ryan
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Patent number: 6179994Abstract: A high VI and low pour point lubricant base stock is made by hydroisomerizing a high purity, waxy, paraffinic Fischer-Tropsch synthesized hydrocarbon fraction having an initial boiling point in the range of 650-750° F., followed by catalytically dewaxing the hydroisomerate using a dewaxing catalyst comprising a catalytic platinum component and an H-mordenite component. The hydrocarbon fraction is preferably synthesized by a slurry Fischer-Tropsch using a catalyst containing a catalytic cobalt component. This combination of the process, high purity, waxy paraffinic feed and the Pt/H-mordenite dewaxing catalyst, produce a relatively high yield of premium lubricant base stock.Type: GrantFiled: September 4, 1998Date of Patent: January 30, 2001Assignee: Exxon Research and Engineering CompanyInventors: Janet R. Clark, Robert J. Wittenbrink, Daniel F. Ryan, Albert E. Schweizer
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Patent number: 6103099Abstract: A lubricating base stock useful for forming lubricants such as a multigrade automotive oils, automatic transmission oils, greases and the like is prepared by hydroisomerizing a waxy hydrocarbon feed fraction having an initial boiling point in the 650-750.degree. F. range and an end point of at least 1050.degree. F., synthesized by a slurry Fischer-Tropsch hydrocarbon synthesis process. The hydroisomerization forms a hydroisomerate containing the desired base stock which is recovered, without dewaxing the hydroisomerate. The hydroisomerization is conducted at conditions effective to convert at least 67 wt. % of the 650-750.degree. F.+ waxy feed hydrocarbons to lower boiling hydrocarbons. When combined with a standard lubricant additive package, these base stocks have been formed into multigrade automotive crankcase oils, transmission oils and hydraulic oils meeting the specifications for these oils.Type: GrantFiled: September 4, 1998Date of Patent: August 15, 2000Assignee: Exxon Research and Engineering CompanyInventors: Robert J. Wittenbrink, Daniel F. Ryan, Douglas R. Boate
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Patent number: 5756420Abstract: Hydroconversion of paraffin containing hydrocarbon feeds is effected over a supported Group VIII and Group VI metal containing catalyst also containing a hydrocracking suppressant such as a Group IB metal, wherein the catalyst is preferably prepared by fixing the Group IB metal on to the support prior to incorporating the Group VI metal on to the support.Type: GrantFiled: November 5, 1996Date of Patent: May 26, 1998Assignee: Exxon Research and Engineering CompanyInventors: Robert J. Wittenbrink, Daniel F. Ryan, William C. Baird, Jr., Kenneth L. Riley, Jack W. Johnson
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Patent number: 5750819Abstract: Hydroconversion of paraffin containing hydrocarbon feeds is effected over a supported Group VIII and Group VI metal containing catalyst also containing a hydrocracking suppressant such as a Group IB metal, wherein the catalyst is preferably prepared by fixing the Group IB metal on to the support prior to incorporating the Group VI metal on to the support.Type: GrantFiled: November 5, 1996Date of Patent: May 12, 1998Assignee: Exxon Research and Engineering CompanyInventors: Robert J. Wittenbrink, Daniel F. Ryan, William C. Baird, Jr., Kenneth L. Riley, Jack W. Johnson
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Patent number: 5498821Abstract: Methane is suppressed in a hydroisomerization process without substantial effect on light gas and light liquid yields when carbon dioxide is included with the feed and a Group VIII non-noble metal or Group VI metal catalyst supported on alumina or silica-alumina.Type: GrantFiled: October 13, 1994Date of Patent: March 12, 1996Assignee: Exxon Research and Engineering CompanyInventors: Daniel F. Ryan, Robert J. Wittenbrink
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Patent number: 5378348Abstract: Distillate fuels with excellent cold flow properties are produced from waxy Fischer-Tropsch products by separating the product into a heavier and a lighter fraction, isomerizing the heavier fraction, hydrotreating and isomerizing the lighter fraction, and recovering products in jet and diesel fuel ranges.Type: GrantFiled: July 22, 1993Date of Patent: January 3, 1995Assignee: Exxon Research and Engineering CompanyInventors: Stephen M. Davis, Daniel F. Ryan
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Patent number: 5322619Abstract: A fluid catalytic cracking process for producing relatively low emissions fuels. The feedstock is relatively low in nitrogen and aromatics and high in hydrogen content and the catalyst is a rare-earth promoted amorphous silica-alumina catalyst. The feedstock can be characterized as having less than about 50 wppm nitrogen; greater than about 13 wt. % hydrogen; less than about 7.5 wt. % 2+ ring aromatic cores; and not more than about 15 wt. % aromatic cores overall.Type: GrantFiled: November 30, 1992Date of Patent: June 21, 1994Assignee: Exxon Research and Engineering CompanyInventors: Stephen M. Davis, William E. Winter, Daniel F. Ryan
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Patent number: 5320745Abstract: A fluid catalytic cracking process for producing relatively low emissions fuels, The feedstock is relatively low in nitrogen and aromatics and high in hydrogen content and the catalyst is an amorphous acidic catalytic material which is promoted with up to about 5000 wppm chromium. The feedstock can be characterized as having less than about 50 wppm nitrogen; greater than about 13 wt. % hydrogen; less than about 7.5 wt. % 2+ ring aromatic cores; and not more than about 15 wt. % aromatic cores overall.Type: GrantFiled: November 30, 1992Date of Patent: June 14, 1994Assignee: Exxon Research and Engineering CompanyInventors: Bruce R. Cook, William E. Winter, Daniel F. Ryan
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Patent number: 4853110Abstract: A process for removing arsenic and/or selenium from carbonaceous materials. The arsenic and/or selenium are separated by reaction with a metal oxide and/or metal sulfide which is itself derived from a metal complex, and organometallic compound and/or a metal salt of an organic acid which is soluble in said carbonaceous fluid and which either decomposes to the corresponding metal oxide and/or metal sulfide or which can be converted to the corresponding metal sulfide or metal oxide. The reaction of the metal oxide and/or metal sulfide with the arsenic and/or selenium is accomplished at a temperature within the range from about 300.degree. F. to about 800.degree. F. preferably from about 500.degree. F. to about 750.degree. F., most preferably from about 680.degree. F. to about 750.degree. F. and in either an inert or reducing atmosphere. Preferably, the conversion is accomplished in a reducing atmosphere and in the presence of molecular hydrogen.Type: GrantFiled: October 31, 1986Date of Patent: August 1, 1989Assignee: Exxon Research and Engineering CompanyInventors: Gopal H. Singhal, Daniel F. Ryan
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Patent number: 4605486Abstract: An improved process for liquefying solid carbonaceous materials wherein the solid carbonaceous material is slurried with a suitable solvent and then subjected to liquefaction at elevated temperature and pressure to produce a normally gaseous product, a normally liquid product and a normally solid product. The normally liquid product is further separated into a naphtha boiling range product, a solvent boiling range product and a vacuum gas-oil boiling range product. At least a portion of the solvent boiling-range product and the vacuum gas-oil boiling range product are then combined and passed to a hydrotreater where the mixture is hydrotreated at relatively severe hydrotreating conditions and the liquid product from the hydrotreater then passed to a catalytic cracker. In the catalytic cracker, the hydrotreater effluent is converted partially to a naphtha boiling range product and to a solvent boiling range product.Type: GrantFiled: April 26, 1985Date of Patent: August 12, 1986Assignee: Exxon Research and Engineering Co.Inventor: Daniel F. Ryan
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Patent number: 4332666Abstract: An improved process for the liquefaction of coal and similar solid carbonaceous materials wherein a hydrogen donor solvent or diluent derived from the solid carbonaceous material is used to form a slurry of the solid carbonaceous material and wherein the naphthenic components from the solvent or diluent fraction are separated and used as jet fuel components. The extraction increases the relative concentration of hydroaromatic (hydrogen donor) components and as a result reduces the gas yield during liquefaction and decreases hydrogen consumption during said liquefaction. The hydrogenation severity can be controlled to increase the yield of naphthenic components and hence the yield of jet fuel and in a preferred embodiment jet fuel yield is maximized while at the same time maintaining solvent balance.Type: GrantFiled: May 6, 1980Date of Patent: June 1, 1982Assignee: Exxon Research & Engineering Co.Inventors: Richard F. Bauman, Daniel F. Ryan
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Patent number: 4292048Abstract: Hydrocarbon liquids and a methane-containing gas are produced from carbonaceous feed solids by contacting the solids with a mixture of gases containing carbon monoxide and hydrogen in a devolatilization zone at a relatively low temperature in the presence of a carbon-alkali metal catalyst. The devolatilization zone effluent is treated to condense out hydrocarbon liquids and at least a portion of the remaining methane-rich gas is steam reformed to produce the carbon monoxide and hydrogen with which the carbonaceous feed solids are contacted in the devolatilization zone. The char produced in the devolatilization zone is reacted with steam in a gasification zone under gasification conditions in the presence of a carbon-alkali metal catalyst and the resultant raw product gas is treated to recover a methane-containing gas.Type: GrantFiled: December 21, 1979Date of Patent: September 29, 1981Assignee: Exxon Research & Engineering Co.Inventors: Robert D. Wesselhoft, Daniel F. Ryan
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Patent number: 3954600Abstract: A catalytic cracking of hydrocarbons in the presence of an added olefin-containing naphtha increases the selectivity and yield of middle distillate.Type: GrantFiled: February 15, 1974Date of Patent: May 4, 1976Assignee: Exxon Research & Engineering Co.Inventors: Elroy M. Gladrow, Daniel F. Ryan