Patents Represented by Attorney S. R. LaPaglia

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  • Motion damping apparatus
    Patent number: 4576520
    Abstract: The present invention generally relates to devices and methods used to suppress the motion of an offshore structure due to wind, wave, seismic, and current forces. More specifically, the invention suppresses structural excitation due to secondary wave forces.The apparatus comprises a mechanical energy absorbing means and a submerged mass. The mechanical energy absorbing means may be a combination of linear or non-linear springs and dampers and is attached to the structure so the vibrating motion may be transferred to the motion damper. The proper weight or size of the damper and mechanical energy absorbing means is determined by first measuring the natural frequency of the structure and the mass of the structure then using those numbers in an equation to calculate the mass and spring constant for the desired apparatus.
    Type: Grant
    Filed: October 11, 1984
    Date of Patent: March 18, 1986
    Assignee: Chevron Research Company
    Inventors: Sung L. Suh, Gerald E. Burns, William H. Silcox
  • Methods for metering two-phase flow
    Patent number: 4576043
    Abstract: A method for metering two-phase flow wherein the successive accelerational pressure drops across an orifice plate and across a venturi coupled in series with the orifice plate are correlated to obtain one or more flow-rate parameter.
    Type: Grant
    Filed: May 17, 1984
    Date of Patent: March 18, 1986
    Assignee: Chevron Research Company
    Inventor: Tanh V. Nguyen
  • Lubricant composition containing a mixture of neutralized phosphates
    Patent number: 4575431
    Abstract: Disclosed is a lubricating oil additive comprising a mixture of phosphates, said phosphates being essentially free of monothiophosphates and comprising:(a) dihydrocarbyl hydrogen dithiophosphates; and(b) a sulfur-free mixture of hydrocarbyl dihydrogen phosphates and dihydrocarbyl hydrogen phosphates, said composition being at least 50% neutralized by a hydrocarbyl amine having 10 to 30 carbons in said hydrocarbyl group.
    Type: Grant
    Filed: July 31, 1985
    Date of Patent: March 11, 1986
    Assignee: Chevron Research Company
    Inventor: Christopher G. Salentine
  • Non-condensible gas injection including alpha-olefin sulfonate surfactant additives
    Patent number: 4572294
    Abstract: An improved non-condensible gas injection process for recovering hydrocarbons from a subterranean formation. The process includes the use of alpha-olefin sulfonate surfactants along with the non-condensible gas to form a gas-foam drive medium which is injected into the formation through at lest one injection well to enhance the recovery of hydrocarbons from at least one production well.
    Type: Grant
    Filed: May 16, 1984
    Date of Patent: February 25, 1986
    Assignee: Chevron Research Company
    Inventors: John H. Duerksen, Robert G. Wall, Jack D. Knight
  • Diesel fuel and method for deposit control in compression ignition engines
    Patent number: 4568358
    Abstract: A diesel fuel composition and method for improving the operation and efficiency of a compression ignition or diesel engine is disclosed comprising operating the engine using a fuel comprising a major amount of hydrocarbon fuel boiling in the diesel range and from about 600 to about 10,000 ppm of an additive comprising a polyoxyalkylene amine or polyamine of from about 500 to about 2,500 molecular weight.
    Type: Grant
    Filed: July 30, 1984
    Date of Patent: February 4, 1986
    Assignee: Chevron Research Company
    Inventor: Richard L. Courtney
  • Process of fabricating a portion of an optical fiber capable of reflecting predetermined wavelength bands of light
    Patent number: 4566889
    Abstract: The invention covers a process of forming gratings in optical fiber. The gratings are formed at depth wherein the evanescent waves of the optical fiber are encountered. The process permits the fabrication of gratings in the optical fiber that reflect light of predetermined wavelengths. The grated optical fibers can be used as reflectors or interferometers when the gratings are used in pairs.
    Type: Grant
    Filed: November 16, 1984
    Date of Patent: January 28, 1986
    Assignee: Chevron Research Company
    Inventor: Donald C. Schmadel, Jr.
  • Conversions of low molecular weight hydrocarbons to higher molecular weight hydrocarbons using a silicon compound-containing catalyst
    Patent number: 4567311
    Abstract: Disclosed is a catalytic process for the production of higher molecular weight hydrocarbons from lower molecular weight hydrocarbons. More particularly, disclosed is a catalytic process for the conversion of methane to C.sub.2 + hydrocarbons, particularly hydrocarbons rich in ethylene or benzene, or both. The process utilizes a silicon compound-containing catalyst, high reaction temperatures of greater than 1000.degree. C., and a high gas hourly space velocity of greater than 3600 hr.sup.-1.
    Type: Grant
    Filed: October 31, 1983
    Date of Patent: January 28, 1986
    Assignee: Chevron Research Company
    Inventors: Louis DeVires, P. R. Ryason
  • Fungicidal tin salts of thienyl and furyl hydroxamic acids, compositions, and method of use therefor
    Patent number: 4565812
    Abstract: Compounds of the formula: ##STR1## wherein Z is sulfur or oxygen; R is alkyl of 1 to 7 carbon atoms; R.sup.1 is aryl of 6 to 10 carbon atoms, lower alkyl of 1 to 6 carbon atoms or cycloalkyl of 3 to 8 carbons, all optionally substituted with 1 to 3 halogen atoms; a is 0 or 1; b is 0, 1, or 2; X is independently halo, nitro, trihalomethyl, lower alkyl of 1 to 3 carbon atoms, or lower alkoxy of 1 to 3 carbon atoms are useful as fungicides and insecticides.
    Type: Grant
    Filed: November 30, 1984
    Date of Patent: January 21, 1986
    Assignee: Chevron Research Company
    Inventor: William F. King
  • Quaternary deposit control additives
    Patent number: 4564372
    Abstract: A fuel composition is disclosed containing 30 to 10,000 ppm of an additive comprising quaternized polyoxyalkylene amine salts of molecular weight 500 to about 2500, the polyoxyalkylene moiety comprising 1 to 30 oxyalkylene units, the units having 2 to 4 carbon atoms and the amine comprising 1 to 12 amine nitrogen atoms and 2 to 40 carbon atoms and having a connecting moiety linking the polyoxyalkylene moiety to the amine moiety. Also disclosed are lubricating oil compositions containing the additive, concentrates of this additive and the composition of the additive itself.
    Type: Grant
    Filed: July 20, 1984
    Date of Patent: January 14, 1986
    Assignee: Chevron Research Company
    Inventor: Curtis B. Campbell
  • Method for improving fuel economy of internal combustion engines using borated 1,2-alkanediols
    Patent number: 4563293
    Abstract: Lubricating oils containing borated long-chain 1,2-alkane diols have been found to reduce fuel consumption in an internal combustion engine.
    Type: Grant
    Filed: July 31, 1984
    Date of Patent: January 7, 1986
    Assignee: Chevron Research Company
    Inventor: Vernon R. Small, Jr.
  • Pesticidal O-(N-alkoxy-substituted-ortho-fluoro-benzimidoyl)-thiophosphonates
    Patent number: 4562180
    Abstract: Compounds of the formula: ##STR1## wherein X is sulfur or oxygen; R.sup.1 is lower alkyl having from 1 to 3 carbon atoms; R.sup.2 is lower alkyl having from 1 to 4 carbon atoms; and R.sup.3 is lower alkylthio having from 1 to 4 carbon atoms, are active as insecticides.
    Type: Grant
    Filed: March 30, 1984
    Date of Patent: December 31, 1985
    Assignee: Chevron Research Company
    Inventor: William F. King
  • Gas diffusion anode
    Patent number: 4560443
    Abstract: Disclosed is a gaseous diffusion anode and a process for the production of gaseous hydrogen chloride in an electrolytic cell.
    Type: Grant
    Filed: December 5, 1983
    Date of Patent: December 24, 1985
    Assignee: Chevron Research Company
    Inventor: Peter C. Foller
  • Alkylaromatic dealkylation
    Patent number: 4560820
    Abstract: A process for dealkylating alkylaromatic hydrocarbons using intermediate pore size zeolites substantially free of acidity is disclosed.
    Type: Grant
    Filed: October 25, 1984
    Date of Patent: December 24, 1985
    Assignee: Chevron Research Company
    Inventor: Leslie A. Field
  • Method for producing industrial asphalts
    Patent number: 4559128
    Abstract: Disclosed is a one-step method of producing an industrial asphalt from a bituminous material which comprises mixing together without air-blowing:(a) a feed material comprising a bituminous material having a viscosity of at least 50 centistokes at 350 degrees Fahrenheit and wherein the feed petroleum residuum forms a single phase when mixed with 5 percent of 98 percent sulfuric acid; and(b) from about 0.1 to 20.0 percent by weight of sulfuric acid, said mixing being done at a temperature in the range of 351 to 600 degrees Fahrenheit, whereby the softening point of the feed is substantially increased and the penetration is significantly decreased.
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: December 17, 1985
    Assignee: Chevron Research Company
    Inventor: Judson E. Goodrich
  • Upflow packed bed catalytic reactor with periodic bed expansion
    Patent number: 4559132
    Abstract: A gas-liquid or a gas-liquid-solid feed is contacted in a vessel containing a packed bed of contact particles. At least a portion of the feed is passed upwardly through the packed bed and the mass flow rate of the feed is periodically increased sufficiently to cause a portion of the particles within the vessel to form an expanded region within the packed bed.
    Type: Grant
    Filed: October 5, 1981
    Date of Patent: December 17, 1985
    Assignee: Chevron Research Company
    Inventor: Christopher W. Kuehler
  • Manufacture of noble metal/zeolite catalysts
    Patent number: 4556646
    Abstract: A simplified method of manufacture of noble metal/zeolite catalysts involves impregnation of the formed catalyst base with a solution of the noble metal and an ammonium salt. Catalysts having a highly uniform radial distribution of the noble metal are prepared.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: December 3, 1985
    Assignee: Chevron Research Company
    Inventor: Richard D. Bezman
  • Steam injection including alpha-olephin sulfonate dimer surfactant additives and a process of stimulating hydrocarbon recovery from a subterranean formation
    Patent number: 4556107
    Abstract: An improved steam injection process for recovering hydrocarbons from a subterranean formation. The process includes the use of alpha-olefin sulfonate dimer surfactants in the steam to form a foam-steam drive medium which is injected into the formation through at least one injection well to enhance the recovery of hydrocarbons from at least one production well.
    Type: Grant
    Filed: April 28, 1983
    Date of Patent: December 3, 1985
    Assignee: Chevron Research Company
    Inventors: John H. Duerksen, Robert G. Wall, Jack D. Knight
  • Leaching metals from spent hydroprocessing catalysts with ammonium sulfate
    Patent number: 4554138
    Abstract: A process for enhancing recovery of metals, especially cobalt, from spent hydroprocessing catalysts when the spent catalyst particles are first roasted at between 400.degree. C. and 600.degree. C. and then contacted with a first aqueous solution of ammonia and an ammonium salt to recover nickel, cobalt, molybdenum, tungsten, and vanadium. The once-leached spent hydroprocessing catalysts are again leached by contacting them with a second aqueous solution of ammonium sulfate at a pH of 1 to 4.
    Type: Grant
    Filed: October 30, 1984
    Date of Patent: November 19, 1985
    Assignee: Chevron Research Company
    Inventor: Paul J. Marcantonio
  • Cracking of heavy hydrocarbons with improved yields of valuable liquid products
    Patent number: 4551229
    Abstract: Hydrocarbon feedstocks, especially those high in Ramsbottom carbon, are vaporized by contact with a relatively inactive coked cracking catalyst, separating the resulting intermediate into a high and low boiling fraction, and cracking the high boiling fraction in a fluid catalytic cracker containing active cracking catalyst.
    Type: Grant
    Filed: March 19, 1984
    Date of Patent: November 5, 1985
    Assignee: Chevron Research Company
    Inventors: Theresa A. Pecoraro, Russell R. Krug, Joanne Deady
  • Oligomerization of liquid olefin over a nickel-containing silicaceous crystalline molecular sieve and hydrocarbyl aluminum halide
    Patent number: 4551438
    Abstract: A process for oligomerizing olefins in the liquid phase using a catalyst composition comprising a nickel-containing silicaceous crystalline molecular sieve catalyst and an hydrocarbyl-aluminum halide.
    Type: Grant
    Filed: April 11, 1984
    Date of Patent: November 5, 1985
    Assignee: Chevron Research Company
    Inventor: Stephen J. Miller