Patents Represented by Attorney Ralph C. Medhurst
  • Patent number: 5171796
    Abstract: Described herein are miscible blends of a poly(aryl ether ketone) and an imide-containing polymer which are useful in the manufacture of extruded film, continuous fiber composites and injection molded articles.
    Type: Grant
    Filed: August 12, 1988
    Date of Patent: December 15, 1992
    Assignee: Amoco Corporation
    Inventors: James E. Harris, Lloyd M. Robeson, Michael D. Cliffton, Bernard H. Eckstein, Markus Matzner
  • Patent number: 5171423
    Abstract: A catalytic cracking process is provided for cost effectively separating and stripping hydrocarbon from catalyst while limiting the occurrence of undesired catalytic overcracking and thermal cracking reactions. The process includes the steps of contacting feed with catalyst, grossly separating the larger coked catalyst particles from the hydrocarbon, disengaging the smaller coked catalyst fines from the hydrocarbon, removing volatile hydrocarbon from the grossly separated and disengaged catalyst, and recycling the volatile hydrocarbon back to the gross separating step. The disengager step includes the steps of dampening the flow of grossly separated hydrocarbon and internally cyclone separating the smaller catalyst fines from the hydrocarbon product.
    Type: Grant
    Filed: May 25, 1990
    Date of Patent: December 15, 1992
    Assignee: Amoco Corporation
    Inventor: Larry W. Kruse
  • Patent number: 5154819
    Abstract: The present invention relates to a hydroprocessing process that employs a catalyst that has been regenerated by subjecting the catalyst to an initial partial decoking step, followed by impregnation with a Group IIA metal-containing component and then subjected to a final decoking step.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: October 13, 1992
    Assignee: Amoco Corporation
    Inventors: Frederick T. Clark, Albert L. Hensley, Jr.
  • Patent number: 5124025
    Abstract: The invention reduces cracking catalyst fines in decanted oil by mixing the decanted oil (DCO) containing cracking catalyst fines with asphaltene and then treating the DCO-asphaltene mixture with a non-aromatic hydrocarbon solvent in an extraction unit or in a multi-stage deasphalting unit.
    Type: Grant
    Filed: November 20, 1990
    Date of Patent: June 23, 1992
    Assignee: Amoco Corporation
    Inventors: Jeffrey J. Kolstad, William I. Beaton, James L. Taylor
  • Patent number: 5113015
    Abstract: There is provided a process for recovering acetic acid from methyl acetate wherein the methyl acetate is hydrolyzed catalytically to methanol and acetic acid in the same tower or column that is used to separate the methanol from the acetic acid and the hydrolysis and separation are carried out coextensively in the vessel. The process is employed suitably in a process for the partial oxidation of a polymethylbenzene to a polycarboxylic acid in the presence of an oxidation catalyst and an acetic acid solvent.
    Type: Grant
    Filed: November 20, 1990
    Date of Patent: May 12, 1992
    Assignee: Amoco Corporation
    Inventors: David A. Palmer, Keith D. Larson, Kristi A. Fjare
  • Patent number: 5110449
    Abstract: A process is disclosed for sludge addition to a coking zone in which the sludge is contacted with oxygen. The sludge is then contacted with feed, liquid derived from the feed, or vapor derived from the feed. Oxygen also contacts the feed, liquid derived from the feed, or vapor derived from the feed to help maintain reaction temperature in the coking zone.
    Type: Grant
    Filed: June 18, 1991
    Date of Patent: May 5, 1992
    Assignee: Amoco Corporation
    Inventors: Dean G. Venardos, Shri K. Goyal
  • Patent number: 5110744
    Abstract: Improved process control is achieved in processes for which it is useful to control variable process conditions based upon on-line determinations of the concentration of weak acids and weak bases, or their soluble salts, in liquid streams of the processes. For example, amine system energy savings and waste treatment system control improvements are taught.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: May 5, 1992
    Assignee: Amoco Corporation
    Inventors: Ernest H. Baughman, Barbara R. Coughlin
  • Patent number: 5110880
    Abstract: Described herein is a molding composition comprising a blend of a select poly(aryl ketone) and a polyetherimide. These blends have an improved ultimate use temperature and stress crack resistance.
    Type: Grant
    Filed: January 30, 1987
    Date of Patent: May 5, 1992
    Assignee: Amoco Corporation
    Inventors: James E. Harris, Lloyd M. Robeson, John P. Gavula
  • Patent number: 5108973
    Abstract: The preparation, structure, and properties of solid inorganic materials containing at least copper, chromium, aluminum, boron and oxygen which new materials have a characteristic X-ray diffraction pattern are described. Also described is the use of such materials in catalytic compositions for the conversion of organic compounds. In particular, new compositions comprising material having a structureCu.sub.2-x Cr.sub.y Al.sub.6-y B.sub.4 O.sub.17 M.sub.m M'.sub.nwhere M is a divalent metal, M' is a monovalent metal, m is a number in a range from 0 to 0.8, n is a number in a range from 0 to 1.6, X is a number in a range from 0 to 0.8 and is equal to the sum of m and n/2, and y is a number in a range from 0.01 to 3, having a characteristic X-ray diffraction pattern are described as well as the use of such materials in various catalyzed processes including dehydrogenation of hydrocarbons and oxygen-containing hydrocarbons.
    Type: Grant
    Filed: May 28, 1991
    Date of Patent: April 28, 1992
    Assignee: Amoco Corporation
    Inventors: Larry C. Satek, Patrick E. McMahon
  • Patent number: 5108658
    Abstract: The invention relates to a light metal oxide-based amorphous electrical conductor which comprises an amorphous ternary composition consisting of alumina, boria, and an oxide of a light metal selected from Group IA and IIA of the Periodic Table of Elements. Amorphous conductors of the present invention can be produced by forming an aqueous composition comprising a source of light metal ions, a source of alumina and a source of boria to form a homogeneous gel, drying the gel to form a superifically dry solid, and calcining the dry solid at a sufficiently high temperature to form an amorphous ternary composition as described above. The conductor is used as an element of a moisture and/or a high temperature sensor.
    Type: Grant
    Filed: January 24, 1991
    Date of Patent: April 28, 1992
    Assignee: Amoco Corporation
    Inventors: Larry C. Satek, Mark P. Kaminsky, Richard E. DeSimone
  • Patent number: 5109027
    Abstract: A process for converting synthesis gas to olefins or higher alcohols depending on operating pressure includes an alkali metal-containing cobalt synthesis gas conversion catalyst. The process allows great flexibility in selecting the product mix by changing process conditions.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: April 28, 1992
    Assignee: Amoco Corporation
    Inventors: Jeffrey T. Miller, Cecelia A. Radlowski
  • Patent number: 5109464
    Abstract: A raised-rib waveguide provides a low-loss coupling to a conventional single-mode optical fiber propagating light of a wavelength (.lambda.). An exemplary embodiment of the waveguide is disclosed for a wavelength of 0.85 .mu.m. In order to identify the values of the structural and compositional parameters of the raised-rib waveguide, a method employing a computer is used to identify a set of parameters that optimize the efficiency of the coupling of the waveguide to an optical fiber while maintaining the waveguide's ability to propagate a selected mode.
    Type: Grant
    Filed: May 24, 1991
    Date of Patent: April 28, 1992
    Assignee: Amoco Corporation
    Inventors: Michael Munowitz, David J. Vezzetti
  • Patent number: 5104845
    Abstract: The preparation, structure, and properties of solid inorganic materials containing aluminum, boron, oxygen and at least one metallo element selected from Group IA of the Periodic Table is described. Also described is the use of such materials in catalytic compositions for the conversion of organic compounds. In particular, the new materials having the general formula:(x) M.sub.2 O.(y) Al.sub.2 O.sub.3.(z) B.sub.2 O.sub.3where M is at least one metallo element selected from Group IA of the Periodic Table having atomic number from 11 through 55, inclusive, and x, y and z are numbers representing molar amounts of the oxides are described as well as the use of such materials in various catalyzed processes including synthesis of methacrylic acid.
    Type: Grant
    Filed: September 22, 1988
    Date of Patent: April 14, 1992
    Assignee: Amoco Corporation
    Inventors: Ruth A. Montag, Larry C. Satek
  • Patent number: 5105046
    Abstract: A method for converting lower alkanes to a higher molecular weight hydrocarbon using a contact material of a fluorine-containing compound of at least one of Sr, Ba, Sc, Y or La, as well as such contact material compositions themselves is provided.
    Type: Grant
    Filed: December 12, 1990
    Date of Patent: April 14, 1992
    Assignee: Amoco Corporation
    Inventor: Don M. Washecheck
  • Patent number: 5105073
    Abstract: A credit card reader extender comprising an elongate generally rectangular body having a top side, a bottom side, a central portion and two end portions. The central portion has a generally rectangular opening therethrough extending from the bottom side to the top side and is adapted to be received over and to fit closely around a card reader of a card reading machine. The card reader is generally elongate and has a slot therein extending downwardly from the top side thereof into the card reader and longitudinally parallel to an elongate axis thereof. The end portions of the body each have a slot extending downwardly from the top side thereof into the body end portion and longitudinally parallel to an elongate axis of the body and in alignment and in registry with the slot in the card reader.
    Type: Grant
    Filed: December 4, 1990
    Date of Patent: April 14, 1992
    Assignee: Amoco Corporation
    Inventors: Albert J. Kovach, Michael S. Butkovich
  • Patent number: 5103122
    Abstract: A high speed, low power DC-offsetting circuit, comprising: an amplifier having an inverting input, a non-inverting input which is adapted to be connected to a high speed low DC voltage source and having an output; a current source which is connected to said inverting input and through a bypass resistor to said output; and capacitor means and resistor means, connected in series with each other at an output node, for connecting said non-inverting input to said output.
    Type: Grant
    Filed: August 21, 1990
    Date of Patent: April 7, 1992
    Assignee: Amoco Corporation
    Inventors: Mark O'Leary, Paul A. Levin
  • Patent number: 5102630
    Abstract: A continuous stirred-tank reactor suitable for the liquid-phase oxidation of an aromatic alkyl to an aromatic carboxylic acid is provided with vertically disposed, relatively narrow baffles on the reactor wall and with oxidizing gas inlet means below the agitator in the reactor. The baffle width is about 0.02 to about 0.04 times the diameter of the reactor.
    Type: Grant
    Filed: March 17, 1988
    Date of Patent: April 7, 1992
    Assignee: Amoco Corporation
    Inventor: Myon K. Lee
  • Patent number: 5102805
    Abstract: The concentration of weak acid and weak base constituents, or their soluble salts, in liquids is determined by passing succeeding samples of constant volume to a separation zone wherein target constituents are volatilized by reagents, then volatilized analytes are stripped from the liquid matrix and carried to a detection zone at a constant flow rate, wherein signals proportional to the variations in individual target analyte concentrations between succeeding samples are generated.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: April 7, 1992
    Assignee: Amoco Corporation
    Inventors: Ernest H. Baughman, Karl G. Schick, Barbara R. Coughlin
  • Patent number: 5102565
    Abstract: A high performance lubricating grease effectively lubricates and protects caster rollers and bearings in steel mills and other metal processing mills. The high performance grease has excellent extreme pressure and antiwear qualities and is economical, nontoxic and safe. The high performance gease can comprise a base oil, a calcium soap thickener, extreme pressure wear-resistant additives comprising tricalcium phosphate and calcium carbonate, and a water-resistant high performance polymer.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: April 7, 1992
    Assignee: Amoco Corporation
    Inventor: John A. Waynick
  • Patent number: 5102567
    Abstract: An improved high performance food grade lubricating oil is provided that effectively lubricates bearings, gears, and slide mechanisms present in food industry equipment. The food grade oil provides superior oxidation, thermal, and hydrolytic stability properties and is economic to manufacture. In the preferred form, the lubricating oil includes a base oil and an additive package comprising the combination of phenolic and aromatic amine antioxidants.
    Type: Grant
    Filed: June 25, 1990
    Date of Patent: April 7, 1992
    Assignee: Amoco Corporation
    Inventor: Leslie R. Wolf