Patents Represented by Attorney Frank J. Sroka

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  • High moduli polyimides
    Patent number: 5243024
    Abstract: Improved imide-containing copolymers comprising, in the aromatic diamine component, p-phenylene diamine and at least one additional aromatic diamine have increased rigidity and useful processability. The copolymers of this invention also may exhibit improved resistance to the detrimental effects of humid environments and retain mechanical properties at elevated temperatures after exposure to humid environments.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: September 7, 1993
    Assignee: Amoco Corporation
    Inventors: Ronald E. Bockrath, Edward J. Gordon
  • Identifying, characterizing, and mapping of seismic noise
    Patent number: 5241514
    Abstract: The present invention provides novel methods for identifying, characterizing and mapping seismic noise as an aid in evaluating and enhancing seismic data. In particular, an array of seismic receivers can be beam steered to sense seismic energy arriving from a plurality of azimuths. A measure of the strength of the seismic energy for each azimuth can be obtained for a plurality of arrival times, velocities and distances from the array. Displays of the azimuthal distribution of the strength of the seismic energy sensed by the areal array can then be produced for identifying and characterizing seismic noise into seismic data.
    Type: Grant
    Filed: May 6, 1992
    Date of Patent: August 31, 1993
    Assignee: Amoco Corporation
    Inventor: Jerry W. Ehlers
  • Method for enhancing geophysical data by nonlinear compression of the dynamic range
    Patent number: 5239467
    Abstract: The present invention provides an improved method of processing and displaying geophysical data so as to enhance the evaluation and interpretation of subtle variations in the earth's geological and lithological structures. In particular, the dynamic range of geophysical data is compressed to more nearly approximate the inherent dynamic range limitations of visual displays of the geophysical data.
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: August 24, 1993
    Assignee: Amoco Corporation
    Inventors: Michael C. Kelly, Jean M. Rickert
  • Process for preparation of poly(aryl ether) polymers by macro bicyclic catalysts
    Patent number: 5239043
    Abstract: An improved process for the preparation of poly(aryl ether) polymers by reacting, in the absence of dipolar aprotic solvents, an alkali metal double salt of a dihydric phenol with a dihalobenzenoid compound in the presence of a macro bicyclic compound having nitrogen bridgehead atoms linked together by three hydrocarbon bridging chains having in each of the hydrocarbon bridging chains at least one additional hetro atom selected from the group consisting of oxygen, nitrogen and sulfur atoms.The poly(aryl ether) polymer resins produced by the process have a low degree of coloration and excellent mechanical and electrical properties which allow them to be molded into a variety of articles.
    Type: Grant
    Filed: December 31, 1991
    Date of Patent: August 24, 1993
    Assignee: Amoco Corporation
    Inventor: Selvaraj Savariar
  • Oriented polymeric microporous films
    Patent number: 5236963
    Abstract: This invention relates to polymeric compositions capable of being converted into oriented microporous films having microvoid cells, interconnecting pores between the cells, and improved elongation, softness and tear strength, comprising an ethylene-propylene block copolymer having an ethylene content of about 10 to about 50 wt %, a low flexural modulus propylene-based polymer, a propylene homopolymer or copolymer having up to about 10 wt % of a comonomer of ethylene or an .alpha.-olefin of 4 to 8 carbon atoms, an inorganic filler such as calcium carbonate, a beta-spherulite nucleating agent, and optionally, a low molecular weight polypropylene and to microporous films formed from such compositions.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: August 17, 1993
    Assignee: Amoco Corporation
    Inventors: Philip Jacoby, William T. Tapp
  • Process for preparation of poly(aryl ether) polymers by acyclic catalysts
    Patent number: 5235020
    Abstract: An improved process for the preparation of poly(aryl ether) polymers by reacting, in the absence of dipolar aprotic solvents, an alkali metal double salt of a dihydric phenol with a dihalobenzenoid compound in the presence of an alkoxylated tertiary amine compound having a nitrogen atom linking together three organic chains comprising hydrocarbon groups and in each of the chains at least one oxygen atom.The poly(aryl ether) polymer resins produced by the process have a low degree of coloration and excellent mechanical and electrical properties which allow them to be molded into a variety of articles.
    Type: Grant
    Filed: December 31, 1991
    Date of Patent: August 10, 1993
    Assignee: Amoco Corporation
    Inventor: Selvaraj Savariar
  • Process for preparation of poly(aryl ether) polymers by macro monocyclic catalysts
    Patent number: 5235019
    Abstract: An improved process for the preparation of poly(aryl ether) polymers by reacting, in the absence of dipolar aprotic solvents, an alkali metal double salt of a dihydric phenol with a dihalobenzenoid compound in the presence of a macrocyclic polyether compound having one ether ring in which oxygen atoms are separated one from the other by 2 to 3 carbon atoms, the ring having fused thereto from 0 to 4 monocyclic or polycyclic aromatic or saturated hydrocarbon nuclei. The nuclei are attached by vicinal carbon atoms thereof to adjoining ring oxygens in oxygen-carbon-carbon-oxygen arrangement.The poly(aryl ether) polymer resins produced by the process have a low degree of coloration and excellent mechanical and electrical properties which allow them to be molded into a variety of articles.
    Type: Grant
    Filed: December 31, 1991
    Date of Patent: August 10, 1993
    Assignee: Amoco Corporation
    Inventor: Selvaraj Savariar
  • Preparation of 2-alkoxy-6-ethylnaphthalenes
    Patent number: 5235115
    Abstract: A method for the selective ethylation of 2-alkoxy-naphthalene compounds at the 6 position of the naphthalene nucleus is disclosed.
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: August 10, 1993
    Assignee: Amoco Corporation
    Inventors: Gary P. Hagen, Wen-Dong Chang, Andreas B. Ernst, David A. Palmer, Daniel B. Pourreau, Patrick E. McMahon, John G. Schaffhausen
  • Catalytic distillation using rigid, cellular monoliths as catalyst-packing material
    Patent number: 5235102
    Abstract: There is provided a process for the conversion of a feedstream comprising gaseous and/or liquid feed materials to a desired products by means of catalytic distillation employing a catalyst-packing material comprising a rigid, cellular monolith or a rigid, cellular monolith coated with a catalytically-active material.Preferred rigid, cellular monoliths are ceramic honeycomb monoliths.
    Type: Grant
    Filed: November 20, 1990
    Date of Patent: August 10, 1993
    Assignee: Amoco Corporation
    Inventors: David A. Palmer, Gary P. Hagen
  • Suppression of dust from solid aromatic anhydrides
    Patent number: 5235070
    Abstract: A method for reducing the formation of dust produced by solid aromatic anhydrides, and aromatic anhydride compositions that have a reduced tendency to emit aromatic anhydride dust, are disclosed. The method comprises treating the aromatic anhydride with low levels of suitable organic compounds.
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: August 10, 1993
    Assignee: Amoco Corporation
    Inventors: Michael R. Green, Chang M. Park, Adel B. Abdul-Malek
  • Process for regenerating a spent resin hydroprocessing catalyst using a group IV metal
    Patent number: 5232885
    Abstract: A method of regenerating a contaminant metal-containing, coke deactivated, molecular sieve-free catalyst having at least one hydrogenation metal and at least one Group IV metal deposited on an inorganic oxide support comprising contacting the catalyst with an oxygen-containing gas under conditions sufficient to remove a substantial amount of the coke from the catalyst.
    Type: Grant
    Filed: December 18, 1991
    Date of Patent: August 3, 1993
    Assignee: Amoco Corporation
    Inventors: Frederick T. Clark, Mary C. Springman
  • Process for the catalytic isomerization of light hydrocarbons
    Patent number: 5233121
    Abstract: The present invention relates to a process for isomerizing a light paraffinic naphtha feedstock having a boiling range from about 50.degree. F. to about 210.degree. F. and containing at least 85 weight percent aliphatic hydrocarbon having 6 carbon atoms or less. The process comprises contacting the feedstock at isomerization conditions with an isomerization catalyst comprising a zeolite beta component.
    Type: Grant
    Filed: August 4, 1992
    Date of Patent: August 3, 1993
    Assignee: Amoco Corporation
    Inventor: Frank S. Modica
  • Polyamide-imide sized fibers
    Patent number: 5230956
    Abstract: The present invention is directed to fibers which are sized or coated on the surface with a polyamide-amic acid, an amide-imide polymer, an amide-imide copolymer or mixtures of these materials and to composites prepared from the sized fibers.
    Type: Grant
    Filed: December 12, 1990
    Date of Patent: July 27, 1993
    Assignee: Amoco Corporation
    Inventors: Bill W. Cole, Robert B. Hanson, Gary T. Brooke
  • Means for and methods of low sulfur and hydrotreated resids as input feedstreams
    Patent number: 5228978
    Abstract: The inventive solvent extraction process uses hydrotreated (HTR) and low sulfur (LSR) resids feedstreams in a single deasphalter unit and in a way that optimizes the disposition of the oils, resins, and asphaltene fractions of each resid for downstream processing. After the refractory asphaltenes are separated from the HTR feedstream, the LSR resid is introduced into the deasphalter so that its resin and asphaltene fractions are combined with the HTR resins. The oils fractions from the two resids are combined and then used as a feedstock for catalytic cracking.
    Type: Grant
    Filed: January 23, 1992
    Date of Patent: July 20, 1993
    Assignee: Amoco Corporation
    Inventors: James L. Taylor, William I. Beaton, Jeffrey J. Kolstad
  • Liquefaction of decarboxylated carbonaceous solids
    Patent number: 5228982
    Abstract: A composition consisting essentially of a carbonaceous solid containing at least one carboxyl group is heated with subcritical liquid water at decarboxylation conditions including a temperature of at least about 300.degree. F. to substantially decarboxylate the solid, thereby producing a stream comprising a decarboxylated solid and water. The water is separated from the decarboxylated solid prior to liquefying the solid.
    Type: Grant
    Filed: April 22, 1991
    Date of Patent: July 20, 1993
    Assignee: Amoco Corporation
    Inventors: Charles G. Scouten, Arunabha Basu, Joseph T. Joseph
  • Olefin polymerization and copolymerization catalyst
    Patent number: 5227354
    Abstract: A process for making a magnesium-containing supported titanium-containing and vanadium-containing catalyst or catalyst component for the polymerization or copolymerization of alpha-olefins.
    Type: Grant
    Filed: April 3, 1992
    Date of Patent: July 13, 1993
    Assignee: Amoco Corporation
    Inventors: Nicholas M. Karayannis, Steven A. Cohen, Julie L. Ledermann
  • Alcohol conversion using copper chromium aluminum borate catalysis
    Patent number: 5227530
    Abstract: Conversion of alcohol to organic compounds which comprises contacting the alcohol with a heterogeneous catalyst composition comprising crystallineCu.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 10 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.
    Type: Grant
    Filed: March 24, 1992
    Date of Patent: July 13, 1993
    Assignee: Amoco Corporation
    Inventors: Larry C. Satek, Patrick E. McMahon
  • Method of geophysical exploration
    Patent number: 5226019
    Abstract: An improved method of stratigraphic analysis of geophysical data is provided. In one embodiment seismic data are transformed into one or more instantaneous attributes descriptive of the wave-like nature of the seismic signals comprising the seismic data. A stratum in the earth's subsurface, having both lateral and vertical extent, is defined on the seismic data. The instantaneous attributes within the stratum can thereafter be transformed into a descriptor statistically representative of changes in the formation materials comprising the stratum. The descriptor can then be plotted in both cross-sectional and plan view so as to identify and characterize both lateral and vertical variations in the lithology, geology and pore fluid content of the formation materials comprising the stratum.
    Type: Grant
    Filed: January 10, 1992
    Date of Patent: July 6, 1993
    Assignee: Amoco Corporation
    Inventor: Michael S. Bahorich
  • Fuel dispenser handle
    Patent number: D338209
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: August 10, 1993
    Assignee: Amoco Corporation
    Inventors: Michael S. Butkovich, Dennis J. Strock, Wolfgang H. Koch
  • Fuel dispenser handle
    Patent number: D338210
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: August 10, 1993
    Assignee: Amoco Corporation
    Inventors: Terrance L. Lambert, Dennis J. Strock, Michael S. Butkovich, Wolfgang H. Koch