Patents Represented by Attorney William H. Magidson

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  • Amide and/or imide containing polymers and monomers for the preparation thereof
    Patent number: 5032667
    Abstract: Described herein are amide and/or imide containing polymers based on novel monomers that contain isoalkylidene bridges. These polymers have excellent toughness combined with high temperature stability, low water absorption, and good melt-fabricability.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: July 16, 1991
    Assignee: Amoco Corporation
    Inventors: James E. Harris, Abe Berger, Vilas M. Chopdekar, Markus Matzner, James Spanswick
  • Single-frequency laser of improved amplitude stability
    Patent number: 5031182
    Abstract: A solid-state laser of improved amplitude stability is obtained by substantially eliminating spatial hole burning in the lasant material and maintaining the optical cavity of the laser at a temperature which results in substantially noise-free generation of output radiation.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: July 9, 1991
    Assignee: Amoco Corporation
    Inventors: Douglas W. Anthon, Pedram Akhavan-Leilabady
  • Method for producing purified trimesic acid
    Patent number: 5030749
    Abstract: A method is disclosed for producing purified trimesic acid prepared by a process involving the liquid-phase oxidation of mesitylene in a solvent consisting of an aliphatic C.sub.2 -C.sub.6 monocarboxylic acid, water or a mixture thereof in the presence of an oxidation catalyst comprising cobalt, manganese and bromine components, crystallizing crude trimesic acid by cooling to about 80.degree. C. to about 150.degree. C., separating crystallized trimesic acid from the mother liquor at a temperature in the range of 80.degree. C. to about 105.degree. C. and washing the separated crude trimesic acid crystals with water at a temperature of from about 10.degree. C. to about 100.degree. C.
    Type: Grant
    Filed: December 4, 1985
    Date of Patent: July 9, 1991
    Assignee: Amoco Corporation
    Inventor: Gregory P. Hussmann
  • Preparation of a dimethyltetralin
    Patent number: 5030781
    Abstract: A method for preparing one or more specific dimethyltetralins by cyclization of either 5-(o-, m, or p-tolyl)-pent-1- or -2-ene or 5-phenyl-hex-1- or -2-ene, with additional cyclization treatment, and optionally cracking, of a heavy fraction of the cyclization product, is disclosed.
    Type: Grant
    Filed: June 15, 1990
    Date of Patent: July 9, 1991
    Assignee: Amoco Corporation
    Inventors: David L. Sikkenga, Ian C. Zaenger, Gregory S. Williams
  • Polyarylate-polyethylene composite laminated structures
    Patent number: 5030505
    Abstract: Composite laminated structures comprising a polyarylate film bound to a polyethylene film via an intermediate tie layer are described. The structures are fabricated by coextrusion of three layer blown tubular films with the center layer being present to bond the polyethylene to the polyarylate.
    Type: Grant
    Filed: February 27, 1990
    Date of Patent: July 9, 1991
    Assignee: Amoco Corporation
    Inventor: Barry L. Dickinson
  • Molded bottles and method of producing same
    Patent number: 5028462
    Abstract: Plastic bottles and a process for producing same in which at least one layer comprises a polyamide composition comprising isophthalic acid, terephthalic acid, adipic acid, metaxylylenediamine and hexamethylenediamine moieties in a molar ratio of about 49.5-0.5/0-20/0.5-49.5/0.5-50/49.5-0.
    Type: Grant
    Filed: July 21, 1989
    Date of Patent: July 2, 1991
    Assignee: Amoco Corporation
    Inventors: John D. Matlack, James G. Villanueva, Bruce A. Newman, Lawrence D. Lillwitz, Melvin L. Luetkens, Jr.
  • Method of dehydrocyclizing alkanes
    Patent number: 5028312
    Abstract: A method is disclosed for reforming hydrocarbons, particularly C.sub.6 -C.sub.10 hydrocarbons, to aromatics, by passing the hydrocarbons over a dehydrocyclization catalyst at dehydrocyclization conditions. The catalyst comprises a non-acidic large pore zeolite having a Group VIII metal and an alkaline earth metal, said alkaline earth metal having been impregnated onto the zeolite by contacting the zeolite with an alkaline earth metal solution of a concentration sufficient to result in the zeolite having an alkaline earth metal content of less than about 2% by weight of the zeolite.
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: July 2, 1991
    Assignee: Amoco Corporation
    Inventors: Jeffrey T. Miller, Frank S. Modica, Victor K. Shum
  • Preparation of isopropylidene bis(phthalic acid)
    Patent number: 5028737
    Abstract: An oxidation process is provided for converting dixylylpropane to isopropylidene bis(phthalic acid) in good yields with minimal by-product production, especially trimellitic acid production. The oxidation process employs an oxidation catalyst that includes zirconium as well as cobalt, manganese, and bromine.
    Type: Grant
    Filed: February 22, 1990
    Date of Patent: July 2, 1991
    Assignee: Amoco Corporation
    Inventor: Paul A. Sanchez
  • Heat dissipating device for laser diodes
    Patent number: 5029335
    Abstract: A heat dissipating device and method for dissipating waste heat produced by a solid state device, which includes (a) a solid state device and (b) a heat sink for dissipating waste heat produced by the solid state device which includes a base member being in thermal contact with the solid state device and a plurality of elongated heat conducting elements extending outwardly from the base member.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: July 2, 1991
    Assignee: Amoco Corporation
    Inventors: James H. Fisher, John H. Clark, Edward J. Burke, James L. Bierschenk
  • Lower alkane conversion catalysts
    Patent number: 5028577
    Abstract: A catalytic composition effective in the catalytic conversion of a feedstock alkane, such as methane, to a higher molecular weight hydrocarbon is disclosed. The composition includes a first component comprising a Group IA metal, a second component comprising a Group IIA metal, a third component, the precursor of which comprises a sol (an aqueous suspension of aluminum, silicon, titanium, zinc, zirconium, cadmium or tin) and a fourth component including a Group VIII metal, silver or a combination thereof, present in an amount effective to substantially increase the catalytic activity of the composition.In addition, methods of preparing such catalytic compositions and catalytic compositions prepared by such methods are disclosed.
    Type: Grant
    Filed: January 11, 1989
    Date of Patent: July 2, 1991
    Assignee: Amoco Corporation
    Inventors: Glenn O. Michaels, Michael J. Spangler
  • Preparation of 2-acyl-6-methylnaphthalenes
    Patent number: 5026917
    Abstract: A regioselective acetylation process is provided for converting a 2-methylnaphthalene compound to a 2-acetyl-6-methylnaphthalene compound. The process is conducted under liquid phase conditions using a new complexing agent which is regiospecific for the beta position of naphthalene and which is an electron-rich, carbon-based compound. A preferred such agent is hexamethylbenzene. Also provided is a novel method for producing a 2-acetyl-6-methylnaphthalene compound of relative high purity from isomer mixtures by recrystallization from a hydrocarbon solvent, such as n-octane, isooctane, or n-nonane.
    Type: Grant
    Filed: March 1, 1990
    Date of Patent: June 25, 1991
    Assignee: Amoco Corporation
    Inventors: Gary P. Hagen, Gregory E. Schmidt, John M. Weis, Thomas G. Smith
  • Preparation of 4-bromo-o-xylene in liquid sulfur dioxide
    Patent number: 5026932
    Abstract: A regioselective process is provided for preparing 4-bromo-o-xylene in an isomer mixture of 4-bromo-o-xylene and 3-bromo-o-xylene by combining bromine with o-xylene in liquid sulfur dioxide medium. A bromine to o-xylene mole ratio of about 0.4:1 to about 1:1 is utilized at a temperature in the range of about -20.degree. C. to about 40.degree. C. While preferred temperatures are in the about -15.degree. C. to about -9.degree. C. range, temperatures above about -9.degree. C. can be used by maintaining the reactant solution under pressure. A product isomer mixture can be isolated by vacuum distillation. A 92:8 weight ratio mixture of 4-bromo-o-xylene and 3-bromo-o-xylene is thus obtainable.
    Type: Grant
    Filed: February 22, 1990
    Date of Patent: June 25, 1991
    Assignee: Amoco Corporation
    Inventor: Mark W. Meszaros
  • Anti-theft device for tank openings
    Patent number: 5025946
    Abstract: The anti-theft device for use in a liquid storage tank having an opening in an upper wall of the tank for receiving and mounting an access fill pipe which receives therein a drop tube having an access port. The anti-theft device comprises a mounting ring; a plug; a truncated porous hollow cone having a larger upper end fixed to the mounting ring and a smaller lower end fixed to the plug which is disposed generally concentric with the elongate axis of the drop tube. The plug may also be provided with a shaped key-way opening to allow gauging of liquid contents of a storage tank with a gauge level stick. The mounting ring of the truncated porous hollow cone is attached to the drop tube within the access fill pipe at a point below the access port of the drop tube and above the upper wall of the storage tank. The key-way opening of the plug can be T-shaped, cross-shape, C-shape, or of a circular-shape.
    Type: Grant
    Filed: July 29, 1990
    Date of Patent: June 25, 1991
    Assignee: Amoco Corporation
    Inventors: Michael S. Butkovich, Gerard V. LaLonde, Irwin Ginsburgh
  • Process for upgrading light apparatus
    Patent number: 5026938
    Abstract: The present invention relates to a process for producing aromatic compounds from a hydrocarbon gas containing C.sub.3 through C.sub.5 paraffinic hydrocarbons under conversion conditions in the presence of a catalyst comprising a gallosilicate molecular sieve, a platinum metal component, and a rhenium metal component.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: June 25, 1991
    Assignee: Amoco Corporation
    Inventor: Victor K. Shum
  • Catalysts for the oxidative conversion of methane to higher hydrocarbons
    Patent number: 5024984
    Abstract: An oxidative coupling catalyst composition for converting methane to a higher hydrocarbon comprising a mixed oxide of: a) a Group IIIB metal selected from the group consisting of yttrium, scandium and lanthanum; b) a Group IIA metal selected from the group consisting of barium, calcium and strontium; and c) a Group IVA metal selected from the group consisting of tin, lead and germanium and wherein the cationic species are present in the approximate ratio of 1:0.5-3:2-4, respectively, and an improved process employing same.
    Type: Grant
    Filed: July 19, 1989
    Date of Patent: June 18, 1991
    Assignee: Amoco Corporation
    Inventors: Mark P. Kaminsky, Mark S. Kleefisch, George A. Huff, Don M. Washecheck, Aileen E. Alvarado-Swaisgood, Mark K. Barr
  • High density thermal spray coating and process
    Patent number: 5019429
    Abstract: A high density, substantially oxide-free metal layer is deposited by spray deposition on a substrate in an atmosphere containing ambient air having an oxygen content above about 0.1% by weight. This is accomplished by directing a supersonic-velocity jet stream of hot gases carrying metal particles at the substrate through an inert gas shroud. The layer is useful as a corrosion barrier and for repairing metal substrates.
    Type: Grant
    Filed: August 11, 1989
    Date of Patent: May 28, 1991
    Assignee: Amoco Corporation
    Inventors: Larry N. Moskowitz, Donald J. Lindley
  • Process for manufacture of maleic anhydride catalysts
    Patent number: 5019545
    Abstract: Novel maleic anhydride catalysts comprising phosphorus-vanadium oxides and phosphorus-vanadium-co-metal oxides wherein said catalysts do not expand under reaction conditions for the manufacture of maleic anhydride and a process for preparing these catalysts are disclosed. The process comprises reacting a vanadium compound with a phosphoryl halide in the presence of water in an atmosphere comprising at least about 0.1% oxygen wherein the molar ratio of water to phosphorus from the phosphoryl halide is in the range of about 2.25:1 to about 3.75:1.
    Type: Grant
    Filed: October 26, 1988
    Date of Patent: May 28, 1991
    Assignee: Amoco Corporation
    Inventors: Muin S. Haddad, William S. Eryman
  • Automated flow rate machine
    Patent number: 5016467
    Abstract: An apparatus and method capable of automated flow rate measurements of thermoplastic polymers which includes mechanisms for automatically loading a test polymer into a test cavity of a heating block and mechanisms for automatically cleaning the test cavity and a piston rod movable therein. The test cavity can be provided in the heating block or can be defined by a sleeve/die insert which also serves as a sample receiving cavity and which is movable into and out of a heating block for carrying out a rheological test of polymer material received in the sleeve/die insert.
    Type: Grant
    Filed: June 7, 1989
    Date of Patent: May 21, 1991
    Assignee: Amoco Corporation
    Inventors: Jerome J. Marcec, James O. Phillips, Albert T. Grzybowski, Bohdan Grzybowski
  • Combined quick release holder and slip resistant grip for fire hoses
    Patent number: D317243
    Type: Grant
    Filed: July 10, 1990
    Date of Patent: June 4, 1991
    Assignee: Amoco Corporation
    Inventors: Richard J. Everding, David R. Lancaster
  • Fuel dispensing nozzle with sight flow indicator
    Patent number: D317969
    Type: Grant
    Filed: December 19, 1989
    Date of Patent: July 2, 1991
    Assignee: Amoco Corporation
    Inventor: Terrance L. Lambert