Patents Represented by Attorney Charles A. Huggett

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  • Denitrification of hydrocarbon feedstock
    Patent number: 4356079
    Abstract: This invention provides a method for reducing the nitrogen content of a heavy hydrocarbonaceous feedstock, which involves contacting the feedstock with hydrogen and water in the presence of a hydrogenation catalyst and a steam stable acidic zeolite catalyst.The invention process is applicable to the denitrification of raw coal, and syncrude feed derived from oil shale and tar sands.
    Type: Grant
    Filed: June 4, 1980
    Date of Patent: October 26, 1982
    Assignee: Mobil Oil Corporation
    Inventor: Ralph M. Desaau
  • Heat balance in FCC process
    Patent number: 4356082
    Abstract: In a fluid catalytic cracking (FCC) process and apparatus, the heat balance between the reactor and the regenerator of the FCC operation is partially uncoupled by transferring at least a portion of thermal energy from the reactor vessel riser to the regenerator vessel. The transfer of thermal energy results in a higher regenerating temperature. The thermal energy is recirculated to the bottom section of the reaction riser through a regenerated catalyst having higher temperature. Consequently, the outlet of the reaction vessel is maintained at a substantially constant temperature (e.g., 100.degree. F.) and the rate of conversion of the oil feed and the octane number of gasoline produced in the process are increased.
    Type: Grant
    Filed: December 18, 1980
    Date of Patent: October 26, 1982
    Assignee: Mobil Oil Corporation
    Inventor: Benjamin Gross
  • Fluid sampling probe
    Patent number: 4355539
    Abstract: A fluid sampling probe includes a fluid sampling conduit surrounded by a sheath. Cooling fluid passes through the annulus between the fluid sampling conduit and the sheath to cool the fluid samples passing through the fluid sampling conduit. A thermocouple has its sensing end located in the annulus to monitor the temperature of the cooling fluid.
    Type: Grant
    Filed: December 30, 1980
    Date of Patent: October 26, 1982
    Assignee: Mobil Oil Corporation
    Inventor: Klaus W. Schatz
  • Water-soluble polymers and utilization thereof
    Patent number: 4356095
    Abstract: Water-soluble polymers that thicken reversibly in aqueous solution on alteration of the degree of alkalinity are manufactured by treating an aqueous suspension of protein with the enzymes elaborated extracellularly by a species of the genus Pseudomonas. The water soluble polymers resulting therefrom are biodegradable. They are useful for stabilizing emulsions, as flow-control agents in water base paint, and as anti-redeposition agents in laundry detergents. They are particularly useful as coagulants for colloidal suspensions of solids such as the phosphate slimes byproduct of the large scale hydraulic mining of the phosphate deposits. They are also particularly useful as flow control agents in the water flooding process for the recovery of petroleum.
    Type: Grant
    Filed: January 8, 1981
    Date of Patent: October 26, 1982
    Assignee: Mobil Oil Corporation
    Inventor: Richard I. Leavitt
  • Metals beneficiation process
    Patent number: 4354870
    Abstract: A process for settling sedimentary materials wherein aqueous suspensions thereof are treated with H.sub.2 S as a means for separating clays containing metals associated therewith.
    Type: Grant
    Filed: October 15, 1981
    Date of Patent: October 19, 1982
    Assignee: Mobil Oil Corporation
    Inventors: Theodore P. Goldstein, Louis D. Rollmann
  • Method of removing contaminants from hydrocarbonaceous fluids using high-sodium alumina
    Patent number: 4354927
    Abstract: Catalyst poisoning contaminants such as arsenic and selenium are removed from hydrocarbonaceous fluids particularly shale oil by contact with high-sodium alumina in the presence of hydrogen; saturation of conjugated diolefins is also effected.
    Type: Grant
    Filed: January 6, 1981
    Date of Patent: October 19, 1982
    Assignee: Mobil Oil Corporation
    Inventors: Stuart S. Shih, Philip J. Angevine, Stephen M. Oleck
  • Sonic attenuating method for distinguishing between oil, water and gas
    Patent number: 4354381
    Abstract: A novel method is disclosed for using the resonance behavior of reservoir sand to distinguish between oil-rich, gas-rich and water-rich zones. A wellbore is logged, as for example with a long spaced acoustic logging tool, to obtain data which are then interpreted to determine the damping of the acoustic signal in one sand versus another, or in that sand versus a reference sand having similar resonance characteristics.
    Type: Grant
    Filed: December 30, 1980
    Date of Patent: October 19, 1982
    Assignee: Mobil Oil Corporation
    Inventors: William L. Medlin, Lucien Masse, James H. Sexton
  • Conversion of synthesis gas with iron-containing catalyst
    Patent number: 4354963
    Abstract: A single particle catalyst composition prepared by forming a homogeneous mixture containing iron, a hydrogel matrix and a crystalline acidic aluminosilicate zeolite having a silica-to-alumina ratio of at least 12, a pore size greater than about 5 angstrom units, and a contraint index of about 1 to 12.
    Type: Grant
    Filed: April 24, 1981
    Date of Patent: October 19, 1982
    Assignee: Mobil Oil Corporation
    Inventors: Stephen A. Butter, Arthur W. Chester, Albert B. Schwartz
  • Processing of heavy hydrocarbon oils
    Patent number: 4354922
    Abstract: This invention provides an integrated process for upgrading a combination of crude petroleum residua, refractory bottoms from catalytic cracking operations, and coal to gasoline and middle distillate products.The process involves dense-gas solvent extraction under supercritical conditions, cracking, and hydroconversion stages.
    Type: Grant
    Filed: March 31, 1981
    Date of Patent: October 19, 1982
    Assignee: Mobil Oil Corporation
    Inventors: Francis J. Derbyshire, Philip Varghese, Darrell D. Whitehurst
  • Logging system depth recorder
    Patent number: 4355378
    Abstract: A logging tool recording system counts and converts depth pulses into a digital coded format. Such digital coded format is converted to a serial digital word for recording on an analog recorder. During playback the digital serial word is converted back into a digital coded format for reproduction by means of a visual digital display.
    Type: Grant
    Filed: December 2, 1980
    Date of Patent: October 19, 1982
    Assignee: Mobil Oil Corporation
    Inventors: Charles L. Dennis, John W. Harrell
  • Motor control apparatus
    Patent number: 4355268
    Abstract: Disclosed is a motor control apparatus which includes a pulse generator for producing a first signal as a pulse signal having a period corresponding to the rotational speed of a motor, a timer for producing a second signal inverted to a first level in response to the first signal and subsequently inverted to a second level after the lapse of a predetermined period of time, a phase compensator for producing a third signal obtained through a phase advance type phase compensation for the second signal, a voltage/current converter for supplying and receiving a first current signal and a second current signal in accordance with the level of the third signal, an integrator for producing an output signal obtained through the integration of the first and second current signals, and a buffer for driving the motor in accordance with the level of the output signal.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: October 19, 1982
    Assignee: Mobil Oil Corporation
    Inventors: Teruo Iwasawa, Hitomi Tojiki
  • Multilayer polyacrylonitrile film
    Patent number: 4353967
    Abstract: A novel multilayer film is made by extruding and/or casting at least two layers of resin, such as polyacrylonitrile homopolymer or interpolymers. By co-extruding a continuous multilayer film with contiguous or tandem dies from a first supply of homogeneous resin solution and a second supply of non-homogeneous redissolved resin scrap, a film may be cast onto a smooth cooled drum surface to form substantially continuous adjacent layers from two or more resin supplies. Scrap resin, such as selvage trimmed from stretched film or mill scrap, is comminuted and redissolved in solvent for recycle to the second supply of the extrusion step. The homogeneous layer prevents film disruption by inhomogeneities present in the contiguous layer containing redissolved scrap, which might cause localized stresses in the film and discontinuities during stretching.
    Type: Grant
    Filed: April 3, 1981
    Date of Patent: October 12, 1982
    Assignee: Mobil Oil Corporation
    Inventor: Gordon P. Hungerford
  • Well logging to determine the nature and extent of mud filtrate penetration
    Patent number: 4353248
    Abstract: A method of open borehole logging is disclosed which provides a mud filtrate penetration index which is proportional to the degree of mud filtrate invasion causing residual oil removal from the vicinity immediately surrounding the borehole. The present invention utilizes a unique combination of formation density logging, dielectric constant logging and gravity meter measurement techniques to arrive at this mud filtrate penetration index, which may also be used to evaluate the probable reliability of residual oil determinations made by these or other logging techniques.
    Type: Grant
    Filed: December 24, 1980
    Date of Patent: October 12, 1982
    Assignee: Mobil Oil Corporation
    Inventor: Richard L. Caldwell
  • Free-standing thermoplastic bag construction
    Patent number: 4353497
    Abstract: The present invention relates to thermoplastic bag constructions capable of standing in an open and erect position without the extraneous support means normally employed with such bags. The bag is characterized by having a bottom gusset and heat sealed side seams which form the lateral bag edges. The individual walls of the bottom gusset are sealed to the adjacent bag walls utilizing a plurality of spaced apart vertical heat seals which are arranged in a predetermined pattern whereby when the bag is open the bag bottom assumes an elliptical configuration and is self-supporting as a result of the stiffening effect of the vertical heat seals.
    Type: Grant
    Filed: February 13, 1981
    Date of Patent: October 12, 1982
    Assignee: Mobil Oil Corporation
    Inventor: Franz Bustin
  • Lubricants and fuels containing boroxarophenanthrene compounds
    Patent number: 4353807
    Abstract: The present invention relates to 9-hydroxy-9,10-boroxarophenanthrene compositions which are particularly suitable additives to improve the stability of lubricating oils and fuel compositions. More particularly, esters of 9-hydroxy-9,10-boroxarophenanthrene which are formed from hindered phenols have been found to have improved and sustained oil solubility and comprise hydrolytically stable antioxidants which, in minor amounts, have been found to impart to oils of lubricating viscosity a high level of protection against oxidative degradation.
    Type: Grant
    Filed: March 24, 1981
    Date of Patent: October 12, 1982
    Assignee: Mobil Oil Corporation
    Inventor: Milton Braid
  • Blends of polystrene or poly (p-methylstyrene) and p-methylstyrene-diene-styrene block copolymers
    Patent number: 4352908
    Abstract: Blends of polystyrene, poly(p-methylstyrene) or copolymers of styrene and p-methylstyrene; and an A-B-A' p-methylstyrene-conjugated diene-styrene block copolymer containing, by weight of the block copolymer, about 5-40% p-methylstyrene, about 5-40% styrene, and about 20-80% conjugated diene, are disclosed.
    Type: Grant
    Filed: December 30, 1981
    Date of Patent: October 5, 1982
    Assignee: Mobil Oil Corporation
    Inventor: James G. Murray
  • Production of foamed polymer
    Patent number: 4352893
    Abstract: Polymer foam is extruded as a tube or sheet into a cooling liquid which is maintained at a temperature up to about 85.degree. C. Either one or both surfaces of the polymer are cooled as the extrudate emerging from the die orifice passes through the liquid. Styrenic polymer foam extrudate produced by such a method exhibits excellent puncture resistance and tensile properties.
    Type: Grant
    Filed: July 14, 1980
    Date of Patent: October 5, 1982
    Assignee: Mobil Oil Corporation
    Inventors: D. Emil Johnson, G. Vincent Sharps, Jr.
  • Stabilized thermosetting polyester
    Patent number: 4352900
    Abstract: This invention provides a formulation comprising a thermosetting polyester, p-methylstyrene, a hydroquinone stabilizer, and 4,4'-thiobis-(3-methyl-6-t-butyl)-phenol.
    Type: Grant
    Filed: December 31, 1980
    Date of Patent: October 5, 1982
    Assignee: Mobil Oil Corporation
    Inventor: James G. Murray
  • Method and apparatus for mixing gaseous oxidant and lixiviant in an in situ leach operation
    Patent number: 4351566
    Abstract: Method and apparatus for mixing a gaseous oxidant (e.g., oxygen) and a lixiviant (e.g., an aqueous carbonate solution) at a downhole location in a well before the oxygen-saturated lixiviant is injected into a formation to be leached. The invention involves establishing a mixing zone in the well by positioning an orifice plate in the well at the downhole location. Lixiviant as it is flowed down the well passes through a restrictive opening in the plate causing a substantial increase in the flow velocity of the lixiviant. At the same time, gaseous oxidant is supplied to a point adjacent the opening in the plate and due to the increased velocity of the lixiviant flowing through the orifice, the oxidant is trapped to form a gas pocket below the orifice. Lixiviant flows through the gas pocket and becomes saturated with the gaseous oxidant.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: September 28, 1982
    Assignee: Mobil Oil Corporation
    Inventors: Tsoung-yuan Yan, Wilton F. Espenscheid
  • Manufacture of aromatic compounds
    Patent number: 4351979
    Abstract: Isomerization of xylene admixed with other alkyl aromatics of at least eight carbon atoms and with normal or slightly branched paraffins is conducted at 600.degree.-800.degree. F. with a zeolite like zeolite ZSM-5 of reduced acid activity.
    Type: Grant
    Filed: April 24, 1981
    Date of Patent: September 28, 1982
    Assignee: Mobil Oil Corporation
    Inventors: Arthur W. Chester, Yung F. Chu