Patents Represented by Attorney William H. Magidson

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  • Acid anhydrides and dianhydrides of disubstituted maleic anhydrides
    Patent number: 5072003
    Abstract: Compounds are disclosed which are anhydrides containing additional carboxylic acid moieties and dianhydrides of disubstituted maleic anhydride compounds wherein the acid anhydrides and dianhydrides retain their alkene character. These compounds are useful as precursors for polyesters, thermally stable polyamide-imides and polyimides.
    Type: Grant
    Filed: June 11, 1990
    Date of Patent: December 10, 1991
    Assignee: Amoco Corporation
    Inventors: Steven J. Behrend, Ellis K. Fields
  • Self-doubling micro-laser
    Patent number: 5070505
    Abstract: A micro-laser is formed from a substantially thin etalon of a self-doubling crystal which has two opposite faces and which is positioned, relative to a close coupled and diode pumped source of optical radiation, for resonantly enhanced phase-matched harmonic generation along an axis of propagation which is substantially perpendicular to the two faces of the etalon.
    Type: Grant
    Filed: January 7, 1991
    Date of Patent: December 3, 1991
    Assignee: Amoco Corporation
    Inventor: George J. Dixon
  • Three micron laser
    Patent number: 5070507
    Abstract: A laser system is disclosed wherein neodymium laser is used to pump a holmium laser to produce a moderately high energy output pulse at about 3 microns. The holmium host has a concentration of holmium in execess of 15 percent and a praseodymium concentration of at least 0.005 percent.
    Type: Grant
    Filed: March 2, 1990
    Date of Patent: December 3, 1991
    Assignee: Amoco Corporation
    Inventor: Douglas W. Anthon
  • Sludge addition to a coking process
    Patent number: 5068024
    Abstract: The present invention relates to a process and apparatus for injecting sludge into the vapor phase of a coking process to vaporize the sludge while minimizing the carryover of solids and coke to downstream equipment. The process and apparatus are applicable to use in both fluid and delayed coking operations and are useful on various sludges which can be found in refineries or petrochemical plants.
    Type: Grant
    Filed: August 3, 1990
    Date of Patent: November 26, 1991
    Assignee: Amoco Corporation
    Inventors: Jon C. Moretta, Robert D. Gombas, Jr.
  • Compartmented oxidation method
    Patent number: 5068406
    Abstract: An apparatus and a method for continuously oxidizing an aromatic alkyl in the liquid phase and under oxidation reaction conditions, for the purpose of producing a desired aromatic carboxylic acid product, is disclosed. A seriatim arranged array of reactor compartments, each of which is adapted to accommodate a gaseous phase as well as a liquid phase is contemplated. Means for separately adjusting the reaction mixture composition of each reaction compartment is provided.
    Type: Grant
    Filed: August 1, 1990
    Date of Patent: November 26, 1991
    Assignee: Amoco Corporation
    Inventors: Juergen K. Holzhauer, Albert P. Brown, Aubrey C. Reeve
  • Process for producing polymeric plasticizers from polyethylene terephthalate
    Patent number: 5068395
    Abstract: A process is disclosed for preparing polymeric plasticizers from polyethylene terephthalate which comprises reacting a trimellitic acid polyester ether with polyethylene terephthalate to prepare a nonlinear copolymer with hydroxyl functionality which is then reacted with a fatty acid of from 12 to 18 carbon atoms. The resulting composition has excellent properties as a polymeric plasticizer for polyvinylchloride resin.
    Type: Grant
    Filed: April 25, 1990
    Date of Patent: November 26, 1991
    Assignee: Amoco Corporation
    Inventor: Oscar M. Bathe
  • BF3-tertiary etherate complexes for isobutylene polymerization
    Patent number: 5068490
    Abstract: Disclosed herein are boron trifluoride etherate complexes in which the ether of the complex has at least one tertiary carbon bonded to an ether oxygen. The etherates are useful for polymerizing a one-olefin or mixtures thereof, preferably comprising isobutylene, whereby the resulting polymer contains a high percentage (80-100%) vinylidene character.
    Type: Grant
    Filed: June 6, 1990
    Date of Patent: November 26, 1991
    Assignee: Amoco Corporation
    Inventor: Bruce E. Eaton
  • Catalyst and process for high selectivity reforming with PT/RE on BA-K-L zeolite
    Patent number: 5066628
    Abstract: This invention comprises a reforming catalyst and process with an unsulfided catalyst comprising Zeolite L, in which the cationic sites have been exchanged to contain potassium or barium or both; a Group VIII noble metal and rhenium, where the ratio of noble metal to rhenium is from about 0.1:1 to about 10:0. This catalyst gives improved selectivity toward aromatics formation and has improved sulfur tolerance compared to other L zeolite reforming catalysts.
    Type: Grant
    Filed: May 23, 1990
    Date of Patent: November 19, 1991
    Assignee: Amoco Corporation
    Inventors: Jeffrey T. Miller, Victor K. Shum
  • Wholly aromatic polyesters comprising isophthalic acid, terephthalic acid, p-hydroxybenzoic acid, hydroquinone and an arylene diol
    Patent number: 5066767
    Abstract: Wholly aromatic polyesters based on isophthalic acid, terephthalic acid, p-hydroxybenzoic acid, hydroquinone and an arylene diol, e.g. 4,4'-biphenol are described. The materials displayed are excellent overall combination of mechanical and thermal properties. Their melting points and heat distortion temperatures (264 psi) are at least about 260.degree. C. and 260.degree. C., respectively. These novel polymers can be melt-fabricated using standard injection molding, extrusion, and melt spinning techniques and yield fabricated articles with good surface characteristics.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: November 19, 1991
    Assignee: Amoco Corporation
    Inventors: Markus Matzner, Richard Layton
  • Method and apparatus for parametric generation of midinfrared light in KNbO.sub.3
    Patent number: 5065046
    Abstract: A method and apparatus for parametric conversion of electromagnetic radiation in KNbO.sub.3 crystals of optical energy at a wavelength near 1 .mu.m to optical energy at wavelengths in the range from 1.4 .mu.m to 4.6 .mu.m. A pump beam and a signal beam impinge on a KNbO.sub.3 crystal and interact to produce optical energy at an idler wavelength and a signal wavelength at the expense of optical energy of the impinging pump beam wavelength. The KNbO.sub.3 crystal has an orientation axis which is aligned with the direction of the impinging pump and signal energy and is on a locus defined by a minimum phase relation between the energy at the pump, signal, and idler frequencies.
    Type: Grant
    Filed: November 28, 1990
    Date of Patent: November 12, 1991
    Assignee: Amoco Corporation
    Inventor: Dean R. Guyer
  • Process for monitoring particle size and moisture content of finely divided material
    Patent number: 5062709
    Abstract: The instant invention relates to a process for monitoring the particle size and moisture content of finely divided material employing the reflectance of scattered light. The invention is particularly directed to monitoring the particle size within limits and moisture content of terephthalic acid after crystallization and drying processes. The invention is futther directed to providing feedback signals to control dryer throughput and dryer temperature to control moisture content of the finely-divided material.
    Type: Grant
    Filed: April 25, 1990
    Date of Patent: November 5, 1991
    Assignee: Amoco Corporation
    Inventor: James D. Slee
  • Internally-doubled, composite-cavity microlaser
    Patent number: 5063566
    Abstract: A microlaser is disclosed comprising: a gain medium having one face which is adapted be coupled to a source of optical pumping radiation and having an opposite face; harmonic conversion means having a close face which is located adjacent to and spaced apart from the opposite face of the gain medium and which is coated for high transmission at a fundamental and high reflectivity at a harmonic and having an opposite face which is coated for high transmission at the fundamental and some transmission at said harmonic; and polarization control means, located adjacent to and spaced apart from the opposite face of the harmonic conversion means, for controlling the polarization of the fundamental.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: November 5, 1991
    Assignee: Amoco Corporation
    Inventor: George J. Dixon
  • Stabilized poly(aryl ether ketone) compositions
    Patent number: 5063265
    Abstract: Described herein are novel heat-stabilized poly(aryl ether ketone) compositions. Stability is imparted by blending a poly(aryl ether ketone) with an aromatic phosphorus compound and an organic acid having a dissociation constant within a well-defined range.
    Type: Grant
    Filed: January 3, 1990
    Date of Patent: November 5, 1991
    Assignee: Amoco Corporation
    Inventor: James E. Harris
  • Tailored laser system
    Patent number: 5062117
    Abstract: A laser system comprising: a holder having one end which is adapted to receive pumping light from a source and having an opposite end which transmits laser light to an optical fiber, the holder defining a predetermined axis of propagation which extends between its ends; and a lasant material which is carried by the holder between the ends of the holder and which is located by the holder at an angle which is measured between at least one optical axis and the axis of propagation and which has a magnitude from zero to ninety degrees.
    Type: Grant
    Filed: July 11, 1990
    Date of Patent: October 29, 1991
    Assignee: Amoco Corporation
    Inventors: Douglas W. Anthon, Alan T. Eggleston, Gregory R. Ristau
  • Tin-containing composition and use
    Patent number: 5059740
    Abstract: A tin-containing composition is provided, the composition having a tin Auger line transition wherein the ratio of the area of the M.sub.5 N.sub.4,5 N.sub.4,5 transition peak at 424.5 eV.+-.1 eV, having a 6 eV FWHM, to the area of M.sub.4 N.sub.4,5 N.sub.4,5 transition peak at 430.5 eV.+-.1 eV is at least 10 to 1. Additional such tin-containing compositions, including catalyst compositions are also provided as are methods for converting feedstock alkanes containing from 1 to 4 carbon atoms to higher molecular weight hydrocarbons using such catalyst compositions.
    Type: Grant
    Filed: June 25, 1990
    Date of Patent: October 22, 1991
    Assignee: Amoco Corporation
    Inventors: Mark P. Kaminsky, Mark S. Kleefisch, Gerry W. Zajac
  • Oil stabilization
    Patent number: 5059303
    Abstract: A method for stabilizing oil is provided. An oil fraction having hydrocarbons with an initial boiling point of about 200.degree. F. to about 1050.degree. F. is hydrotreated to reduce the nitrogen content of the oil fraction to be stabilized. Subsequently, condensed aromatic compounds are selectively extracted from the hydrotreated oil fraction to yield a stable oil fraction.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: October 22, 1991
    Assignee: Amoco Corporation
    Inventors: James L. Taylor, Albert L. Hensley, John M. Forgac, David F. Tatterson
  • Solids-liquid separation
    Patent number: 5059331
    Abstract: A method and a system for separating solids from a solids-containing liquid feed is disclosed wherein ultrasonic energy is applied to a fouled separation element in situ in the separator unit associated with the element while the element is immersed in a liquid to effect removal therefrom of solids fouling the elements and wherein the separation element is backflushed with a backflush liquid.
    Type: Grant
    Filed: March 6, 1990
    Date of Patent: October 22, 1991
    Assignee: Amoco Corporation
    Inventor: Shri K. Goyal
  • Lower alkane conversion
    Patent number: 5053578
    Abstract: A method for converting a feedstock alkane containing from 1 to 3 carbon atoms to a higher molecular weight hydrocarbon comprising contacting a feedstock with an oxygen-containing gas in the presence of a catalytic composition is disclosed. The catalytic composition includes a Group IA metal, a Group IIA metal and a third component, the precursor of which is a sol such as an aqueous suspension of a metal such as aluminum, silicon, titanium, zinc, zirconium, cadmium or tin with which the other components of the composition are thoroughly dispersed.
    Type: Grant
    Filed: February 8, 1990
    Date of Patent: October 1, 1991
    Assignee: Amoco Corporation
    Inventors: Glenn O. Michaels, Michael J. Spangler
  • Multistage ethylbenzene dehydrogenation process with split-flow hydrocarbon feed
    Patent number: 5053572
    Abstract: An improved multistage ethylbenzene dehydrogenation process comprising feeding steam and a major fraction of a hydrocarbon feed to a first reactor and feeding a remaining minor fraction of the hydrocarbon feed and a product of the first reactor to a second reactor.
    Type: Grant
    Filed: September 18, 1990
    Date of Patent: October 1, 1991
    Assignee: Amoco Corporation
    Inventors: Dae K. Kim, George M. Longland, Jr.
  • Single baffle tile for fixed heater for oil refineries
    Patent number: D320848
    Type: Grant
    Filed: June 17, 1988
    Date of Patent: October 15, 1991
    Assignee: Amoco Corporation
    Inventors: Ronald L. Cutshall, Frank L. Groenewold, Martin F. Brennan