Patents Examined by Cynthia A. Prezlock
  • Method for minimizing fouling of heat exchanger
    Patent number: 4556476
    Abstract: Hydrocarbon processing equipment is protected against fouling during the processing of hydrocarbons at elevated temperatures by adding to the equipment small amounts of mixtures of N,N'-dimer of phenothizine or substituted phenothiazine and one or more N,N diaromatic substituted hydroxylamines.
    Type: Grant
    Filed: August 10, 1984
    Date of Patent: December 3, 1985
    Assignee: Atlantic Richfield Company
    Inventors: Richard F. Miller, Michael P. Nicholson
  • Refrigeration lubricating oil containing dialkyl sulfosuccinate
    Patent number: 4556496
    Abstract: A refrigeration lubricating oil composition comprising a branched-chain alkylbenzene or mixture of branched-chain alkylbenzenes containing a total of from 10 to 25 carbon atoms in the alkyl groups, and about 50 ppm to 5 weight percent of a dialkyl sulfosuccinate wherein each alkyl group has 3 to 7 carbon atoms.
    Type: Grant
    Filed: March 28, 1984
    Date of Patent: December 3, 1985
    Assignee: Chevron Research Company
    Inventor: David J. Glova
  • Process for the isomerization of isolated double bonds to conjugated double bonds in low-molecular weight homo- and/or copolymers of 1,3-dienes
    Patent number: 4556754
    Abstract: A process for the isomerization of isolated double bonds to conjugated double bonds in low-molecular weight homo- and/or copolymers of 1,3-dienes uses an isomerization catalyst optionally in the presence of a solvent, wherein the isomerization catalyst is a mixture of(a) a hydroxide of the alkali metals potassium, rubidium, or cesium, and an alcohol or(b) a lithium alcoholate or sodium alcoholate and a potassium, rubidium, or cesium salt or(c) sodium hydroxide, an alcohol, and a polar, aprotic compound.The isomerization is conducted at a temperature of 80.degree.-220.degree. C.
    Type: Grant
    Filed: February 18, 1983
    Date of Patent: December 3, 1985
    Assignee: Chemische Werke Huels Aktiengesellschaft
    Inventors: Wolfgang Kampf, Christoph Herrmann
  • Borated phosphonates as lubricant and fuel additives
    Patent number: 4555353
    Abstract: Compounds made by reacting a vicinal diol with a hydrocarbyl phosphite and then borating the resulting product have been found to be effective friction reducers when added to lubricants or fuels. This is true in any use of lubricants, but is especially true when they are used in internal combustion engines. In the latter case, the fuels used, when they contain the additive, aid in the reduction of friction in the engine.
    Type: Grant
    Filed: March 13, 1985
    Date of Patent: November 26, 1985
    Assignee: Mobil Oil Corporation
    Inventors: Andrew G. Horodysky, Phillip S. Landis
  • Methane conversion
    Patent number: 4554395
    Abstract: A method for synthesizing hydrocarbons from a methane source which comprises contacting methane with an oxidative synthesizing agent under elevated pressures, preferably at pressures within the range of about 5 to 30 atmospheres. Particularly effective oxidative synthesizing agents are reducible oxides of metals selected from the group consisting of Mn,Sn,In,Ge,Pb,Sb, and Bi.
    Type: Grant
    Filed: August 12, 1983
    Date of Patent: November 19, 1985
    Assignee: Atlantic Richfield Company
    Inventors: C. Andrew Jones, John J. Leonard, John A. Sofranko
  • Heat exchanger antifoulant
    Patent number: 4551226
    Abstract: Disclosed is a process for reducing the fouling in a heat exchanger in which a hydrocarbon stream is heated or cooled as it passes through the heat exchanger. From 1 to 500 parts per million of an organic hydroxylamine is added to the stream to reduce fouling.
    Type: Grant
    Filed: February 26, 1982
    Date of Patent: November 5, 1985
    Assignee: Chevron Research Company
    Inventor: Richard L. Ferm
  • Arsenic removal from shale oils
    Patent number: 4551237
    Abstract: Shale oil produced from arsenic-containing oil shale is treated with an aqueous solution of one or more sulfide materials and separated therefrom, yielding an oil fraction of reduced arsenic content. Preferred sulfide materials include ammonium sulfide and ammonium polysulfide.
    Type: Grant
    Filed: June 25, 1982
    Date of Patent: November 5, 1985
    Assignee: Union Oil Company of California
    Inventor: Donald M. Fenton
  • Process and facility for making coke suitable for metallurgical purposes
    Patent number: 4551232
    Abstract: Process and facility for upgrading heavy hydrocarbonaceous materials for making coke suitable for metallurgical purposes comprises mixing the heavy hydrocarbonaceous materials with a diluent having a closely controlled boiling range and subjecting the oil diluent mixture to distillation and careful fractionation so as to maximize liquid yields in the coking step.
    Type: Grant
    Filed: February 9, 1983
    Date of Patent: November 5, 1985
    Assignee: Intevep, S.A.
    Inventors: Jose L. Calderon, Humberto Betancourt
  • Thermal cracking of hydrocarbons
    Patent number: 4548706
    Abstract: A method for thermally cracking hydrocarbons under elevated pressure is disclosed.
    Type: Grant
    Filed: January 26, 1983
    Date of Patent: October 22, 1985
    Assignee: Standard Oil Company (Indiana)
    Inventors: Christos G. Papadopoulos, Narasimhan Calamur
  • Methane conversion using a silica/magnesia support
    Patent number: 4547608
    Abstract: An improved method for converting methane to higher hydrocarbon products by contacting a gas comprising methane with a contact agent at a selected temperature, the agent comprising a reducible metal oxide, a support of at least two oxides, and an alkali metal.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: October 15, 1985
    Assignee: Atlantic Richfield Company
    Inventor: Marvin F. L. Johnson
  • Methane conversion
    Patent number: 4547610
    Abstract: An improved method for converting methane to higher hydrocarbon products by contacting a gas comprising methane and a reducible metal oxide under synthesis conditions, the improvement which comprises performing the contacting in the presence of oxides of nitrogen. Nitrous oxide is a preferred nitrogen oxide.
    Type: Grant
    Filed: November 8, 1984
    Date of Patent: October 15, 1985
    Assignee: Atlantic Richfield Company
    Inventors: John A. Sofranko, Howard P. Withers, Jr.
  • Methane conversion process
    Patent number: 4547607
    Abstract: A method is disclosed for converting methane to higher hydrocarbon product by contacting the methane with a solid which comprises a reducible metal oxide which when contacted with methane at a temperature within the range of about 500.degree. to 1000.degree. C. is reduced and produces higher hydrocarbon products and water, the improvement comprising recycling C.sub.2 + alkanes recovered during subsequent processing of the effluent produced by the contacting to the contacting step.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: October 15, 1985
    Assignee: Atlantic Richfield Company
    Inventors: C. Andrew Jones, John J. Leonard, John A. Sofranko
  • Methane conversion
    Patent number: 4547611
    Abstract: An improved method for converting methane to higher hydrocarbon products by contacting a gas comprising methane and an oxidative synthesizing agent at synthesizing conditions, the improvement which comprises contacting methane with a solid comprising a promoting amount of alkali metal and/or compounds thereof, said solid being associated with a support selected from the group consisting of alkaline earth metals and compounds thereof. Magnesia is a particularly preferred support.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: October 15, 1985
    Assignee: Atlantic Richfield Company
    Inventors: C. Andrew Jones, John A. Sofranko
  • Lubricants containing polyhydroxy hydrocarbylamines
    Patent number: 4545915
    Abstract: Polyhydroxy-containing hydrocarbylamines, when added to a lubricant or to a liquid fuel, reduce friction between surfaces of metal in contact. They also can reduce fuel consumption in an internal combustion engine.
    Type: Grant
    Filed: August 21, 1984
    Date of Patent: October 8, 1985
    Assignee: Mobil Oil Corporation
    Inventors: Andrew G. Horodysky, Joan M. Kaminski
  • Methane conversion using a magnesia/silica support
    Patent number: 4544786
    Abstract: An improved method for converting methane to higher hydrocarbon products by contacting a gas comprising methane with a contact agent at a selected temperature, the agent comprising a reducibile metal oxide, a support of at least two oxides, and an alkali metal.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: October 1, 1985
    Assignee: Atlantic Richfield Company
    Inventors: E. William Breder, Jr., John A. Jaecker, Marvin F. L. Johnson
  • Preparative process for supports
    Patent number: 4544787
    Abstract: An improved process for the production of a contact agent comprising digesting a reducible oxide of at least one metal, the oxide of which forms a reduced metal oxide, and a support in the presence of a silicon component, drying the precipitate of the reducible oxide and calcining the precipitate to form the contact agent.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: October 1, 1985
    Assignee: Atlantic Richfield Company
    Inventor: E. William Breder, Jr.
  • Methane conversion
    Patent number: 4544784
    Abstract: A method is disclosed for converting methane to higher hydrocarbon product by contacting methane with a contact solid which comprises a reducible metal oxide which when contacted with methane at a temperature within the range of about 500.degree. to 1000.degree. C. is reduced and produces higher hydrocarbon products and water; and a promoting amount of at least one halogen component.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: October 1, 1985
    Assignee: Atlantic Richfield Company
    Inventors: John A. Sofranko, C. Andrew Jones
  • Stereoselective synthesis of internal olefins
    Patent number: 4544789
    Abstract: Regioselective and stereoselective synthesis of trans-internal olefins is effected with transition metal catalyst complexes having pairs of associated active sites. Photolytic conditions are generally employed.
    Type: Grant
    Filed: September 6, 1983
    Date of Patent: October 1, 1985
    Assignee: University of Illinois Board of Trustees
    Inventors: Theodore L. Brown, Philip O. Nubel
  • Methane conversion
    Patent number: 4544785
    Abstract: A method is disclosed for converting methane to higher hydrocarbon product by contacting methane with a solid which comprises a reducible metal oxide which when contacted with methane at a temperature within the range of about 500.degree. to 1000.degree. C. is reduced and produces higher hydrocarbon products and a promoting amount of at least one chalcogen component. The preferred chalcogen components are selected from a group consisting of sulfur, selenium, tellurium, and compounds thereof.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: October 1, 1985
    Assignee: Atlantic Richfield Company
    Inventors: Howard P. Withers, John A. Sofranko
  • Process for the removal of solids from an oil
    Patent number: 4539099
    Abstract: A process for removing suspended solids particularly difficultly filterable inorganic solids from an oil obtained as a refinery process bottom fraction from both steam and catalytic cracking units (e.g. catalytic cracker bottoms) or from coal conversion processes (e.g. coal tar) by adding to the oil an agglomerating agent comprising an oxyalkylated phenol formaldehyde resin glycol ester whereby said solids are clustered together into readily filterable agglomerates.
    Type: Grant
    Filed: September 20, 1984
    Date of Patent: September 3, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: Philip Merchant, R. Roger Wunderlich