Patents by Inventor Lewis E. Drehman
Lewis E. Drehman 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: 4520223Abstract: Platinum or other platinum-group metals can be deposited substantially on the surface only of pellets of a refractory catalyst support by impregnation with an aqueous solution of such as hexammonium platinum tetrasulfite. The resulting catalysts contain relatively small total amounts of platinum-group metal positioned primarily at the surface, yet are as highly active as catalysts uniformly impregnated throughout the body of the pellet and containing much larger amounts of platinum-group metal. The catalyst further can contain rhenium.Type: GrantFiled: October 11, 1983Date of Patent: May 28, 1985Inventors: Roger N. McGinnis, Lewis E. Drehman, Emory W. Pitzer
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Patent number: 4431750Abstract: Platinum or other platinum-group metals can be deposited substantially on the surface only of pellets of a refractory catalyst support by impregnation with an aqueous solution of such as hexammonium platinum tetrasulfite. The resulting catalysts contain relatively small total amounts of platinum-group metal positioned primarily at the surface, yet are as highly active as catalysts uniformly impregnated throughout the body of the pellet and containing much larger amounts of platinum-group metal. The catalyst further can contain thenium.Type: GrantFiled: May 19, 1982Date of Patent: February 14, 1984Assignee: Phillips Petroleum CompanyInventors: Roger N. McGinnis, Lewis E. Drehman, Emory W. Pitzer
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Patent number: 4389305Abstract: The catalytic hydrodenitrogenation of organic compounds containing sulfur and/or nitrogen is carried out in the presence of a catalyst composition comprising zinc titanate and at least one promoter selected from the group consisting of vanadium, chromium, cobalt, nickel, molybdenum, tungsten, rhenium, platinum, palladium, rhodium, ruthenium, and compounds thereof.Type: GrantFiled: April 30, 1981Date of Patent: June 21, 1983Assignee: Phillips Petroleum CompanyInventors: Lloyd E. Gardner, Floyd E. Farha, Jr., Alan D. Eastman, Lewis E. Drehman
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Patent number: 4333855Abstract: The catalytic hydrodesulfurization and/or hydrodenitrogenation of organic compounds containing sulfur and/or nitrogen is carried out in the presence of a catalyst composition comprising zinc, titanium and at least one promoter selected from the group consisting of vanadium, chromium, cobalt, nickel, molybdenum, tungsten, rhenium, platinum, palladium, rhodium, ruthenium, and compounds thereof.Type: GrantFiled: April 30, 1981Date of Patent: June 8, 1982Assignee: Phillips Petroleum CompanyInventors: Lloyd E. Gardner, Floyd E. Farha, Jr., Alan D. Eastman, Lewis E. Drehman
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Patent number: 4263133Abstract: The catalytic reforming of a feedstock which contains at least one reformable organic compound or the hydrocracking of a feedstock which contains at least one hydrocrackable organic compound is carried out in the presence of a catalyst composition comprising zinc and titanium.Type: GrantFiled: February 28, 1980Date of Patent: April 21, 1981Assignee: Phillips Petroleum CompanyInventors: Lewis E. Drehman, Floyd E. Farha, Jr., Darrell W. Walker
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Patent number: 4263132Abstract: The catalytic reforming of a feedstock which contains at least one reformable organic compound or the hydrocracking of a feedstock which contains at least one hydrocrackable organic compound is carried out in the presence of a catalyst composition comprising zinc, titanium and rhenium.Type: GrantFiled: February 28, 1980Date of Patent: April 21, 1981Assignee: Phillips Petroleum CompanyInventors: Lewis E. Drehman, Floyd E. Farha, Jr.
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Patent number: 4191846Abstract: Dehydrogenatable organic compounds diluted with steam, are dehydrogenated in the absence of free oxygen at high conversion and selectivity to less saturated compounds with a catalyst composite consisting essentially of one or more metals selected from the group consisting of Ni, Pd, Pt, Ir and Os, tin and a metal selected from the group consisting of gold and silver deposited on a support such as alumina, silica or a Group II aluminate spinel.Type: GrantFiled: January 12, 1976Date of Patent: March 4, 1980Assignee: Phillips Petroleum CompanyInventors: Floyd Farha, Jr., Lewis E. Drehman
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Patent number: 4169815Abstract: Dehydrogenatable organic compounds, diluted with steam, are dehydrogenated in the absence of free oxygen at high conversion and selectivity to less saturated compounds with a catalyst composite consisting essentially of one or more metals selected from the group consisting of Ni, Pd, Pt, Ir and Os in association with tin and a metal selected from the group consisting of cesium, rubidium, thalium and cerium deposited on a support such as alumina, silica or a Group II aluminate spinel.Type: GrantFiled: September 27, 1978Date of Patent: October 2, 1979Assignee: Phillips Petroleum CompanyInventor: Lewis E. Drehman
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Patent number: 4167472Abstract: A process for treating a hydrocarbon composition containing both straight chain and non-straight chain hydrocarbons in which said hydrocarbon composition is separated into a straight chain hydrocarbon-rich fraction and a non-straight chain hydrocarbon-rich fraction, non-aromatics in said non-straight chain hydrocarbon-rich fraction are converted to aromatics, and at least a portion of the straight chain hydrocarbon-rich fraction is passed in combination with steam over a steam active catalyst comprising at least one Group VIII metal and a tin modified Group II metal aluminate under conditions such that aromatics are produced.Type: GrantFiled: April 26, 1978Date of Patent: September 11, 1979Assignee: Phillips Petroleum Co.Inventors: James E. Dick, Fred T. Sherk, Lewis E. Drehman
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Patent number: 4152365Abstract: A feedstock comprising olefinic hydrocarbons having more than one double bond per molecule is selectively hydrogenated to produce hydrocarbons having less unsaturation relative to the feedstock by contacting the feedstock in the presence of steam and hydrogen with a catalyst comprising a Group VIII metal or an oxide thereof on a carrier comprising a Group II metal aluminate spinel containing tin or an oxide of tin. The feedstock can be produced by reforming paraffin and cycloparaffin hydrocarbons in the presence of steam with a catalyst comprising a Group VIII metal or an oxide thereof on a carrier comprising a Group II metal aluminate spinel containing tin or an oxide of tin.Type: GrantFiled: March 17, 1975Date of Patent: May 1, 1979Assignee: Phillips Petroleum CompanyInventor: Lewis E. Drehman
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Patent number: 4053533Abstract: Acetylenic compounds are selectively removed from hydrocarbon mixtures containing same by oxidation in the presence of a solid copper-manganese-oxygen catalyst. In one embodiment, acetylenic compounds are selectively removed from a conjugated diene mixture containing same by contacting oxygen and a mixture with a copper manganite catalyst under oxidizing conditions.Type: GrantFiled: October 15, 1975Date of Patent: October 11, 1977Assignee: Phillips Petroleum CompanyInventors: Lewis E. Drehman, Floyd Farha, Jr., Arlo J. Moffat
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Patent number: 4049743Abstract: Acetylenic compounds are selectively removed from hydrocarbon mixtures containing same by oxidation in the presence of a copper-manganese-rare earth metal-zinc aluminate catalyst. In one embodiment, acetylenic compounds are selectively removed from a conjugated diene mixture containing same by contacting oxygen and the mixture with a catalyst of zinc aluminate promoted with copper, manganese, and a rare earth metal under oxidizing conditions.Type: GrantFiled: July 7, 1976Date of Patent: September 20, 1977Assignee: Phillips Petroleum CompanyInventors: Lewis E. Drehman, Floyd Farha, Jr.
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Patent number: 4035433Abstract: Acetylenic compounds are selectively removed from hydrocarbon mixtures containing same by oxidation in the presence of a copper chromite catalyst. In one embodiment, acetylenic compounds are selectively removed from streams containing C.sub.4 unsaturated hydrocarbons containing same by contacting oxygen and the stream with a catalyst of copper, chromium, and oxygen under oxidizing conditions.Type: GrantFiled: July 13, 1976Date of Patent: July 12, 1977Assignee: Phillips Petroleum CompanyInventors: Lewis E. Drehman, Thomas Davis
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Patent number: 4000206Abstract: A C.sub.6 hydrocarbon stream is converted to benzene, cyclohexane and a motor fuel blending stock by a combination of steps comprising fractionation, hydrogenation and isomerization of the fractions boiling in the isohexanes range and above the n-hexane range, and reforming of the fraction boiling in the n-hexane range and separately recovering a motor fuel blending stock, cyclohexane and benzene as products of the process.Type: GrantFiled: October 16, 1975Date of Patent: December 28, 1976Assignee: Phillips Petroleum CompanyInventor: Lewis E. Drehman
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Patent number: 3957688Abstract: Dehydrogenatable organic compounds diluted with steam, are dehydrogenated in the absence of free oxygen at high conversion and selectivity to less saturated compounds with a catalyst composite consisting essentially of one or more metals selected from the group consisting of Ni, Pd, Pt, Ir and Os, tin and a metal selected from the group consisting of gold and silver deposited on a support such as alumina, silica or a Group II aluminate spinel.Type: GrantFiled: November 15, 1973Date of Patent: May 18, 1976Assignee: Phillips Petroleum CompanyInventors: Floyd Farha, Jr., Lewis E. Drehman