Patents Represented by Attorney Larry W. Evans
  • Patent number: 4954323
    Abstract: A process and apparatus for the reduction of NO in combustion effluent comprising injecting NH.sub.3 into contact with the combustion effluents wherein the improvement comprising injecting the NH.sub.3 into the combustion effluent through a venturi used to connect the incinerator means which produces the combustion effluent to the cooling means which cools the combustion effluent prior to emission into the atmosphere.
    Type: Grant
    Filed: November 1, 1988
    Date of Patent: September 4, 1990
    Assignee: The Standard Oil Company
    Inventor: Edward J. Sockell
  • Patent number: 4952465
    Abstract: Novel additives are disclosed comprising a material capable of absorbing hydrogen and recombining oxygen, which additive is ideally suited for incorporation in sealed cells. The additive may be disposed in an energy storage device in several manners such as a coating on a negative electrode, a thin layer disposed between cell separators, an auxilliary electrode, and as one negative electrode in a device having a plurality of negative and positive electrodes.
    Type: Grant
    Filed: August 26, 1988
    Date of Patent: August 28, 1990
    Assignee: The Standard Oil Company
    Inventors: Jonathan H. Harris, Allan V. Marse, Michael A. Tenhover, Richard M. Wilson
  • Patent number: 4951286
    Abstract: Squeezed states of light having significant degrees of squeezing are achieved with modest values of atomic density and intracavity electromagnetic (EM) field by a device and method for coupling the EM field within the optical cavity. An oscillatory exchange of excitation then occurs between the atomic polarization and the EM field within the cavity.
    Type: Grant
    Filed: September 29, 1987
    Date of Patent: August 21, 1990
    Assignee: The University of Texas System
    Inventors: Harry J. Kimble, Mark G. Raizen, Luis A. Orozco
  • Patent number: 4950390
    Abstract: An improved apparatus and method for froth flotation separation of the components of a slurry is provided wherein improved recycling capability is provided by utilization of a partition in the flotation tank in which the froth flotation is performed.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: August 21, 1990
    Assignee: BP America Inc.
    Inventors: Alex Szentlaszloi, Earl T. Robinson
  • Patent number: 4950749
    Abstract: A process for the recovery of nonionic glucans by adding a divalent cation to a solution containing solubilized glucan and then adjusting the solution to an alkaline pH resulting in the precipitation of glucan.
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: August 21, 1990
    Assignee: The Standard Oil Company
    Inventors: Sayit S. Johal, George M. Coleman
  • Patent number: 4945994
    Abstract: A method for selectively producing oil from a reservoir containing both oil and gas. A lateral or horizontal wellbore is drilled within the reservoir below the gas-oil interface, and the wellbore has an inverted producing interval that is upwardly inclining toward the tail of the well. The inverted wellbore is drilled and completed in order to improve reservoir drainage by causing gas breakthrough to occur first at the far end of the upwardly inclining producing interval. A fluid restrictor is activated to restrict gas production from this breakthrough area and to permit oil production above the restrictor.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: August 7, 1990
    Assignee: Standard Alaska Production Company
    Inventor: Theodore O. Stagg
  • Patent number: 4946663
    Abstract: High surface are carbon fibers are produced by heating carbon fibres in the presence of a quality of alkali metal hydroxide in excess of 50% by weight based on weight of carbon at temperatures of above 500.degree. C. in an inert atmosphere.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: August 7, 1990
    Assignee: The British Petroleum Company, p.l.c.
    Inventors: Gary J. Audley, Alan Grint
  • Patent number: 4945249
    Abstract: Apparatus for detecting an anomaly, (e.g. the presence of a hydrocarbon seep) at or near a water or land surface comprises means for generating a beam, preferably a pulsed beam, of primary light radiation, preferably ultra-violet light, and directing the beam towards the surface. The beam is sufficiently intense and of such a spectral composition that the beam causes the anomaly, if present, to emit secondary light radiation. The apparatus also comprises means for collecting the secondary light radiation, or means for collecting solar induced secondary light radiation, spectral analysis means for analysing the spectrum of the secondary radiation, and a high resolution, multi-element digitizing detector for recovering the analyzed secondary radiation.
    Type: Grant
    Filed: January 5, 1989
    Date of Patent: July 31, 1990
    Assignee: The British Petroleum Company plc
    Inventors: Andrew I. Grant, Martyn T. MacPherson, David G. Stevens
  • Patent number: 4944592
    Abstract: Quantum nondemolition measurements are made by back-action evasion obtained by a combination of a parametric oscillation and a conversion of polarizations. A polarization converter (14, 16, 17), such as a Faraday rotator, converts at substantially a single frequency between at least a portion of a signal polarization state and a detector polarization state. A parametric amplifier (11) having a gain G is coupled to the polarization converter (14, 16, 17).
    Type: Grant
    Filed: April 4, 1989
    Date of Patent: July 31, 1990
    Assignee: The University of Texas System
    Inventors: Harry J. Kimble, Silvania F. Pereira, Daniel F. Walls
  • Patent number: 4943187
    Abstract: A projecting actuation point and a hollow ROV-operable tool for subsea equipment both have a larger diameter surface and a smaller diameter surface, the former being nearest to the subsea equipment. The smaller diameter surface of the actuation point provides a coarse guidance and early alignment of the tool over the actuation point and the larger and smaller surfaces, which fit closely, provide in combination two sets of interfaces for final alignment.The principle can be applied to a wide variety of subsea parts. The actuation point can be a spigot for a valve or choke, a point for hydraulic or electrical connection, a point for both fluid injection and valve isolation or a coupling to link a subsea component with a subsea module or to a remote power source.
    Type: Grant
    Filed: November 16, 1988
    Date of Patent: July 24, 1990
    Assignee: British Petroleum Co. p.l.c.
    Inventor: Hans P. Hopper
  • Patent number: 4943465
    Abstract: Provided is a composite for use as thermal insulation in high temperature environments. The composite comprises a layer of randomly laid and oriented, fine diameter, heat resistant fibers interlocked together into the form of a shape sustaining paper having a high fiber index and two lateral surfaces, said paper being compressed to produce a paper which has a thickness of from about 0.01 to 0.50 inch and a density of about 6 to about 30 lb/cu.ft. A high temperature resistant scrim is disposed upon each of the lateral surfaces of the paper, and a network of abrasion-resistant, high temperature-resistant threads is stitched through the scrim and the paper such that the scrim is mechanically locked to the paper by said threads. The network of threads and the scrim substantially retain the structural integrity of the said paper to maintain said paper in compression.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: July 24, 1990
    Assignee: The Carborundum Company
    Inventors: Douglas J. Bailey, Paul Boymel, Juan M. Cerdan
  • Patent number: 4940900
    Abstract: The flocculation threshold of a petroleum product containing asphaltenes is measured by measuring the radiation in the near infrared transmitted through a sample of the product in solution in a solvent in relation to the quantity of precipitant continuously added to the sample.
    Type: Grant
    Filed: August 17, 1988
    Date of Patent: July 10, 1990
    Assignee: BP Oil International Limited
    Inventor: Didier C. Lambert
  • Patent number: 4938995
    Abstract: The subject invention relates to a process for the deposition of an oxygen-containing high fluoropolymer thin film onto an approxpriate substrate comprising loading the substrate in an enclosed reactor; evacuating the reactor; charging the reactor with an inert carrier gas and an oxygen-containing fluorocarbon monomer feed gas; and plasma-polymerizing the feed gas such that a thin film of polymerized monomer is deposited onto the substrate.The invention further relates to an insulation material comprising the fluoropolymer thin film recited above, a plasma polymerized thin film of an oxygen-containing fluoropolymer, and the use of a polymerization precursor monomer for such thin films that is an oxygen-containing fluorocarbon monomer.
    Type: Grant
    Filed: May 10, 1989
    Date of Patent: July 3, 1990
    Assignee: The Standard Oil Company
    Inventors: Paul J. Giordano, George W. Prohaska, Richard C. Smierciak
  • Patent number: 4939286
    Abstract: Antimony-promoted bismuth cerium molybdate catalysts are promoted with additional elements.
    Type: Grant
    Filed: July 12, 1988
    Date of Patent: July 3, 1990
    Assignee: The Standard Oil Company
    Inventors: James F. Brazdil, Linda C. Glaeser, Robert K. Grasselli
  • Patent number: 4935538
    Abstract: The process for the production of high molecular weight oxygenates by condensing low molecular weight oxygenates in the presence of CO and a catalyst having the general formula A.sub.a CuM.sub.c X.sub.d O.sub.x. In addition, a novel condensation catalyst comprising A.sub.a CuM.sub.c Bi.sub.d O.sub.x is disclosed for use in this process.
    Type: Grant
    Filed: April 23, 1987
    Date of Patent: June 19, 1990
    Assignee: The Standard Oil Company
    Inventors: John R. Budge, Senja V. Compton
  • Patent number: 4932166
    Abstract: A method for grinding an oxygen sensitive ceramic material to a powder which comprises grinding an oxygen sensitive ceramic feed material having an average particle size of between 1 and 200 microns in a contamination free high energy autogenous attrition mill in non-oxidizing fluid in the presence of media for a sufficient time to obtain a specific surface area of at least 5 m.sup.2 /g and preferably at least 9 m.sup.2 /g. The media consists essentially of the same ceramic as the feed material is of high purity and has an average particle size of less than 4 mm and preferably less than 2.5 mm. the ground material may be further treated so that the average particle size is less than one micron and so that the greater than 97 numerical percent of the particles of the finished powder is smaller than 5 microns. The invention includes the finished powder.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: June 12, 1990
    Assignee: The Carborundum Company
    Inventors: Wolfgang D. G. Boecker, Tadeusz Korzekwa, Lewis M. Koppel
  • Patent number: 4933060
    Abstract: A method to modify the surface or fluoropolymer by a reactive gas plasma so that the surfaces have improved fluoropolymer to other substrate adhesive bond strength.
    Type: Grant
    Filed: February 4, 1988
    Date of Patent: June 12, 1990
    Assignee: The Standard Oil Company
    Inventors: George W. Prohaska, Richard J. Butler, Carl G. Nickoson
  • Patent number: 4933054
    Abstract: An electrocatalytic process is described for producing unsaturated hydrocarbon compounds from saturated hydrocarbon compounds. The process is conducted in an electrogenerative cell and generally comprises the steps of(A) providing a fuel cell comprising a solid electrolyte having a first surface coated with conductive metal, metal oxide or mixtures thereof capable of catalyzing the reduction of oxygen to oxygen ions, and a second surface coated with metal, metal oxide or mixtures thereof, the two conductive coatings being connected by an external circuit,(B) passing an oxygen-containing gas in contact with the first conductive coating while,(C) passing the saturated hydrocarbon compound-containing feed gas in contact with the second conductive coating, and(D) recovering unsaturated hydrocarbons.In a preferred embodiment, the conductive metal coating on the first and second surfaces comprises a silver-containing metal composition.
    Type: Grant
    Filed: March 13, 1987
    Date of Patent: June 12, 1990
    Assignee: The Standard Oil Company
    Inventors: Terry J. Mazanec, Thomas L. Cable
  • Patent number: 4929789
    Abstract: A process is disclosed for converting a gaseous or vaporized hydrocarbon feedstock to a product comprising ethylene, acetylene or a mixture thereof.
    Type: Grant
    Filed: January 15, 1988
    Date of Patent: May 29, 1990
    Assignee: The Standard Oil Company
    Inventors: Victor R. Gupta, Christopher J. Clark
  • Patent number: 4925609
    Abstract: An oxygen-sensing element particularly for use in the exhaust stream of an internal combustion engine. In one embodiment, the sensing element may be a tubular solid electrolyte body with a transverse web forming a relatively shallow recess at one end of the body and a relatively deep tube at the other. Separate electrodes are formed on the surface of the body proximate the recess and on both opposing sides of the web. A porous plug disposed in the recess covers one of the electrodes. When the electrode on the surface of the body is exposed to the exhaust stream of a fuel-rich air-fuel mixture, the EMF across that electrode and the electrode on the underside of the web, which is exposed to fresh air, is indicative of the oxygen content of the exhaust stream.
    Type: Grant
    Filed: April 18, 1988
    Date of Patent: May 15, 1990
    Assignee: Stemcor Corporation
    Inventors: Hisao Yamada, Thomas Yuan