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).

  • Patent number: 4520223
    Abstract: 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: Grant
    Filed: October 11, 1983
    Date of Patent: May 28, 1985
    Inventors: Roger N. McGinnis, Lewis E. Drehman, Emory W. Pitzer
  • Patent number: 4431750
    Abstract: 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: Grant
    Filed: May 19, 1982
    Date of Patent: February 14, 1984
    Assignee: Phillips Petroleum Company
    Inventors: Roger N. McGinnis, Lewis E. Drehman, Emory W. Pitzer
  • Patent number: 4389305
    Abstract: 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: Grant
    Filed: April 30, 1981
    Date of Patent: June 21, 1983
    Assignee: Phillips Petroleum Company
    Inventors: Lloyd E. Gardner, Floyd E. Farha, Jr., Alan D. Eastman, Lewis E. Drehman
  • Patent number: 4333855
    Abstract: 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: Grant
    Filed: April 30, 1981
    Date of Patent: June 8, 1982
    Assignee: Phillips Petroleum Company
    Inventors: Lloyd E. Gardner, Floyd E. Farha, Jr., Alan D. Eastman, Lewis E. Drehman
  • Patent number: 4263132
    Abstract: 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: Grant
    Filed: February 28, 1980
    Date of Patent: April 21, 1981
    Assignee: Phillips Petroleum Company
    Inventors: Lewis E. Drehman, Floyd E. Farha, Jr.
  • Patent number: 4263133
    Abstract: 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: Grant
    Filed: February 28, 1980
    Date of Patent: April 21, 1981
    Assignee: Phillips Petroleum Company
    Inventors: Lewis E. Drehman, Floyd E. Farha, Jr., Darrell W. Walker
  • Patent number: 4191846
    Abstract: 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: Grant
    Filed: January 12, 1976
    Date of Patent: March 4, 1980
    Assignee: Phillips Petroleum Company
    Inventors: Floyd Farha, Jr., Lewis E. Drehman
  • Patent number: 4169815
    Abstract: 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: Grant
    Filed: September 27, 1978
    Date of Patent: October 2, 1979
    Assignee: Phillips Petroleum Company
    Inventor: Lewis E. Drehman
  • Patent number: 4167472
    Abstract: 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: Grant
    Filed: April 26, 1978
    Date of Patent: September 11, 1979
    Assignee: Phillips Petroleum Co.
    Inventors: James E. Dick, Fred T. Sherk, Lewis E. Drehman
  • Patent number: 4152365
    Abstract: 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: Grant
    Filed: March 17, 1975
    Date of Patent: May 1, 1979
    Assignee: Phillips Petroleum Company
    Inventor: Lewis E. Drehman
  • Patent number: 4053533
    Abstract: 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: Grant
    Filed: October 15, 1975
    Date of Patent: October 11, 1977
    Assignee: Phillips Petroleum Company
    Inventors: Lewis E. Drehman, Floyd Farha, Jr., Arlo J. Moffat
  • Patent number: 4049743
    Abstract: 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: Grant
    Filed: July 7, 1976
    Date of Patent: September 20, 1977
    Assignee: Phillips Petroleum Company
    Inventors: Lewis E. Drehman, Floyd Farha, Jr.
  • Patent number: 4035433
    Abstract: 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: Grant
    Filed: July 13, 1976
    Date of Patent: July 12, 1977
    Assignee: Phillips Petroleum Company
    Inventors: Lewis E. Drehman, Thomas Davis
  • Patent number: 4000206
    Abstract: 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: Grant
    Filed: October 16, 1975
    Date of Patent: December 28, 1976
    Assignee: Phillips Petroleum Company
    Inventor: Lewis E. Drehman
  • Patent number: 3957688
    Abstract: 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: Grant
    Filed: November 15, 1973
    Date of Patent: May 18, 1976
    Assignee: Phillips Petroleum Company
    Inventors: Floyd Farha, Jr., Lewis E. Drehman