Patents Assigned to Continental Oil Company
  • Patent number: 4118623
    Abstract: A method is provided for determining the shale content of mined coal by monitoring the thorium content of the coal. Thorium content and ash content are shown to be related whereby a direct reading of the thorium will be indicative of the shale content of the coal and the ash content of the coal. The method utilizes the natural radiation of thorium to provide the continuous or selective control of mined coals.
    Type: Grant
    Filed: March 31, 1977
    Date of Patent: October 3, 1978
    Assignee: Continental Oil Company
    Inventors: Walter H. Fertl, Preston L. Gant
  • Patent number: 4117106
    Abstract: Aluminum alkoxides are hydrolyzed at low temperatures using high injection velocities and are then vacuum stripped at or below 80.degree. C to produce .beta.-alumina trihydrates in large proportion. The .beta.-alumina trihydrate can then be converted to eta alumina.
    Type: Grant
    Filed: August 1, 1977
    Date of Patent: September 26, 1978
    Assignee: Continental Oil Company
    Inventors: Larry L. Bendig, John F. Scamehorn
  • Patent number: 4116882
    Abstract: Alumina spheres are formed by peptizing alumina slurries, centrifugates, and filtercakes, aging and dropping the peptized material through a hydrocarbon filled column. The improved method avoids the drying and reslurrying of alumina powders currently used and provides a method whereby harmful ions such as chloride and sulfates can be excluded from the alumina.
    Type: Grant
    Filed: December 14, 1977
    Date of Patent: September 26, 1978
    Assignee: Continental Oil Company
    Inventors: Larry L. Bendig, Cathy S. Siemsen, Donald E. Stowell
  • Patent number: 4116301
    Abstract: Apparatus for supplying a large amount of air periodically at a controlled rate to the air cushion beneath an air-cushion vehicle as particularly employed for coupling of controlled frequency seismic energy into the earth. The apparatus consists of a vehicle body which includes a compressed air supply or input to a self-contained plenum chamber space for applying air pressure through a multi-port rotary valve thereafter to be directed into an air cushion formed between the vehicle and the earth surface with periodic exhaust to the atmosphere. The rotary air modulator or valve is comprised of a cylindrical stator, a rotor, and a shutter, each of which includes a plurality of equispaced ports, and air flow from the plenum chamber to the air cushion is modulated by passage through the stator and rotor in accordance with an intermediate shutter position; pressure exhaust is similarly controlled.
    Type: Grant
    Filed: March 3, 1977
    Date of Patent: September 26, 1978
    Assignee: Continental Oil Company
    Inventor: Delbert W. Fair
  • Patent number: 4117243
    Abstract: A process for preparing o-benzylphenol is disclosed. The process comprises heating benzyl phenyl ether, either in liquid or vapor phase, in the presence of an effective amount of activated alumina catalyst.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: September 26, 1978
    Assignee: Continental Oil Company
    Inventors: Charles M. Starks, Allan J. Lundeen
  • Patent number: 4117085
    Abstract: A method of reducing discoloration of alumina which is caused by exposure of said alumina to high temperatures is disclosed. The method comprises adding an effective amount of an inorganic oxidizing agent (e.g. H.sub.2 O.sub.2 or NaOCl) to the alumina prior to exposing it to the high temperature.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: September 26, 1978
    Assignee: Continental Oil Company
    Inventors: Kang Yang, John F. Scamehorn
  • Patent number: 4115606
    Abstract: Scale formation on metallic surfaces exposed to liquids containing scale-forming components is retarded by coating the surfaces with a mixture of a low surface energy polymer having hydrophobic properties and a low surface energy filler having hydrophilic properties.
    Type: Grant
    Filed: August 26, 1977
    Date of Patent: September 19, 1978
    Assignee: Continental Oil Company
    Inventors: Orwin G. Maxson, Gary D. Achenbach
  • Patent number: 4115246
    Abstract: A hydrogen donor diluent cracking process for upgrading a heavy liquid hydrocarbon wherein pitch fractionated from the cracked products is subjected to a partial oxidation process to reduce the amount of pitch and to provide hydrogen for hydrogenation of hydrogen donor diluent for the cracking step.
    Type: Grant
    Filed: January 31, 1977
    Date of Patent: September 19, 1978
    Assignee: Continental Oil Company
    Inventor: Glenn A. Sweany
  • Patent number: 4115688
    Abstract: A method for determining the distance from a given point in a coal seam to shale by sensing the thorium radiation from shale layers positioned about the coal seam. The invention is useful for maintaining a drill in a desired position in a coal seam and guiding the drill in response to the sensed radiation.
    Type: Grant
    Filed: March 31, 1977
    Date of Patent: September 19, 1978
    Assignee: Continental Oil Company
    Inventors: Walter H. Fertl, Preston L. Gant
  • Patent number: 4112206
    Abstract: Polyvinyl chloride containing certain fluorocarbon surfactants has improved antistatic properties.
    Type: Grant
    Filed: July 5, 1977
    Date of Patent: September 5, 1978
    Assignee: Continental Oil Company
    Inventor: James A. Wingrave
  • Patent number: 4109719
    Abstract: A method for creating a zone of relatively high permeability within a subterranean carbonaceous deposit which includes gasifying a portion of the carbonaceous deposit to provide a cavity, placing at least one explosive device in the deposit in the vicinity of the cavity so that energy generated upon detonation of the explosive device extends into the cavity, and detonating the explosive device thereby causing a portion of the carbonaceous deposit to be fragmented and to collapse into the cavity.
    Type: Grant
    Filed: December 5, 1977
    Date of Patent: August 29, 1978
    Assignee: Continental Oil Company
    Inventors: William L. Martin, Harry A. Wahl, Gary C. Young
  • Patent number: 4110544
    Abstract: A process for preparing cresols from di-hydrocarbyl-substituted cresols, wherein the hydrocarbyl groups contain from 3 to 7 carbon atoms, is disclosed. In the process the di-hydrocarbyl-substituted cresol is contacted with a catalyst (e.g. alumina) in the liquid phase at elevated temperatures and pressure. 4,6-di-t-butyl-m-cresol is a typical feedstock.
    Type: Grant
    Filed: January 13, 1977
    Date of Patent: August 29, 1978
    Assignee: Continental Oil Company
    Inventors: Thomas E. Goodwin, Charles M. Starks
  • Patent number: 4110275
    Abstract: A method and composition is provided for positioning a polymeric material having particulate matter disposed therein in a subterranean formation penetrated by a wellbore. The composition consists essentially of a hydrocarbon oil, a quaternary salt of an essentially undegraded, cellulose sulfate, solid particulate matter in an amount equal to from about 0.25 to about 22 pounds of particulate matter per gallon of hydrocarbon oil and an acid-settable thermosetting resin in an amount equal to from about 0.1 to about 5.0 gallons per cubic foot of particulate material. The composition is placed in contact with a subterranean formation in a wellbore by a method comprising injecting a first mixture consisting essentially of said quaternary salt of an essentially undegraded cellulose sulfate mixed with hydrocarbon oil followed by the injection of the composition with a post injection of an additional quantity of the quaternary salt in oil.
    Type: Grant
    Filed: July 14, 1977
    Date of Patent: August 29, 1978
    Assignee: Continental Oil Company
    Inventors: Thomas R. Sifferman, Derry D. Sparlin
  • Patent number: 4110543
    Abstract: A method of preparing hydrocarbyl-substituted cresols is disclosed. The method comprises heating a mixture of mono- or di-hydrocarbyl-substituted cresols and an alcohol, which is benzyl alcohol or a C.sub.1 -C.sub.10 aliphatic alcohol, at an elevated temperature in the presence of a catalytic amount of alumina. The product contains at least one hydrocarbyl substituent corresponding to the hydrocarbon moiety of the alcohol used in the process. A typical process employs 4,6-di-t-butyl-m-cresol and isopropanol to prepare a product mixture containing a substantial amount of thymol.
    Type: Grant
    Filed: February 24, 1977
    Date of Patent: August 29, 1978
    Assignee: Continental Oil Company
    Inventors: Thomas E. Goodwin, Charles M. Starks
  • Patent number: 4110253
    Abstract: This invention provides an improved process for the disproportionation of highly alkylated phenols with phenol using an improved magnesium oxide catalyst promoted with tungsten oxide, silica sol, and sodium silicate. The method provides a catalyst having a high reactivity, high surface area, and high crush strength compared to known magnesium oxide, tungsten oxide catalysts. The catalyst is useful in phenol methylation and disproportionation. The effect of silica sol and sodium silicate is synergistic since these materials alone will not catalyze these reactions. Surprisingly, the catalyst will not disproportionate olefins.
    Type: Grant
    Filed: January 24, 1977
    Date of Patent: August 29, 1978
    Assignee: Continental Oil Company
    Inventor: Bruce E. Leach
  • Patent number: 4108256
    Abstract: Apparatus and method for drilling generally horizontal holes through subterranean coal beds for release of methane gas from the coal beds are described. A sliding stabilizer on a drill rod is selectively positioned to provide elevational control to a rotating drill bit. The stabilizer is keyed to a slot in the drill rod, and lateral offsets in the slot are used to retain the stabilizer in the desired position on the drill rod.
    Type: Grant
    Filed: May 12, 1977
    Date of Patent: August 22, 1978
    Assignee: Continental Oil Company
    Inventor: Richard G. Moore, III
  • Patent number: 4108909
    Abstract: A method for the production of n-alkylated cresylic acids such as n-hexyl resorcinol by direct alkylation of a cresylic acid such as resorcinol under liquid phase conditions.
    Type: Grant
    Filed: November 18, 1976
    Date of Patent: August 22, 1978
    Assignee: Continental Oil Company
    Inventors: Bruce Eugene Leach, Charles M. Starks
  • Patent number: 4109010
    Abstract: An anti-microbial composition consisting of ammoniated zinc compounds optionally formulated into surfactant formulations and toilet bars is presented.
    Type: Grant
    Filed: February 15, 1974
    Date of Patent: August 22, 1978
    Assignee: Continental Oil Company
    Inventor: Roy C. Sias
  • Patent number: 4107037
    Abstract: A sidestream of injection liquid taken downstream of a filter is passed through a monitoring filter of appropriate pore size. Pressure drop over the monitoring filter is determined and a regeneration cycle for the main filter is triggered in response to differential pressure (.DELTA.P) over a preset value, which corresponds to deterioration in filtrate quality.
    Type: Grant
    Filed: September 28, 1977
    Date of Patent: August 15, 1978
    Assignee: Continental Oil Company
    Inventors: Robert J. Cavanaugh, Robert L. Coffee, Dell Conley, Howard H. Ferrell
  • Patent number: 4107054
    Abstract: Lubricating oil compositions having improved corrosion inhibition are disclosed. The lubricating oil compositions comprise (a) a major amount of a base lubricating oil, (b) alkenyl succinimide dispersant, and (c) corrosion inhibiting amount of certain specific acidic derivatives of benzene (e.g. 2-amino-5-methylbenzoic acid). In one aspect the lubricating oil composition contains additionally a minor amount of an overbased sulfonate.
    Type: Grant
    Filed: June 27, 1977
    Date of Patent: August 15, 1978
    Assignee: Continental Oil Company
    Inventor: Warren W. Woods