Patents Represented by Attorney Ronald D. Hantman

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  • Divalent transition-metal-aluminosilicate hydrocarbon conversion catalysts having mazzite-like structures, ECR-23-D
    Patent number: 5338526
    Abstract: This invention relates to novel zeolitic compositions having one or more transition metals as well as aluminum and silicon in the framework tetrahedral positions. The composition has a mazzite-like structure. The invention also involves a process of preparation in which at least one divalent transition metal is directly synthesized into the product.
    Type: Grant
    Filed: February 1, 1993
    Date of Patent: August 16, 1994
    Assignee: Exxon Research and Engineering Company
    Inventors: David E. W. Vaughan, Karl G. Strohmaier
  • On-line corrosivity monitor for petroleum products
    Patent number: 5332900
    Abstract: A method and system for monitoring the presence of a corrosive constituent in a petroleum product. [The invention detects the reflected] Reflected radiation is detected from a metal standard in the petroleum product which indicates the presence of the corrosivity constituent.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: July 26, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventors: Horst Witzke, Joshua Varon
  • Transition-metal-aluminosilicate hydrocarbon conversion catalysts having an L type structure, ECR-22-D
    Patent number: 5328675
    Abstract: This invention relates to novel zeolitic compositions having zinc as well as aluminum and silicon in the framework tetrahedral positions. The composition has a structure similar to type-L aluminosilicate zeolites. The invention also involves a process of preparation in which one or more divalent transition metals is directly synthesized into the product metalo-aluminosilicate.
    Type: Grant
    Filed: February 1, 1993
    Date of Patent: July 12, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventors: David E. W. Vaughan, Karl G. Strohmaier
  • Pillared interlayered kandite clay compositions
    Patent number: 5326734
    Abstract: This invention includes compositions of matter made up of a kandite clay which has been treated with large molecules containing multi-atom metallic or semi-metallic species and heated to produce pillars within the clay which are located generally between the clay's layers. The pillared kandite composition is useful as a catalyst support, sorbent, or ion exchanger.The invention also includes a process for producing the pillared kandite composition comprises mixing the finely divided clay in an aqueous solution with the pillaring medium and heating the resulting composition at a temperature high enough to decompose the added compound.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: July 5, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventor: David E. W. Vaughan
  • Process for preparing LTL nano-crystalline zeolite compositions
    Patent number: 5318766
    Abstract: The reaction of premade gels with KOH in aqueous ammonia solvents yields highly crystalline but ultrasmall particulate, colloidal, products having major advantages in catalytic and sorption process.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: June 7, 1994
    Assignee: Exxon Research and Engineering Company
    Inventors: David E. W. Vaughan, Karl G. Strohmeier
  • Method to determine liquid flow rate for manifold feed nozzles
    Patent number: 5297442
    Abstract: The present invention is a method for determining the mass flow rate of liquid from each of the nozzles on a manifold of nozzles. A method is demonstrated to provide an absolute calibration technique.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: March 29, 1994
    Assignee: Exxon Research & Engineering Company
    Inventors: Henry A. Wolf, Richard J. Bellows
  • Synthesis of ECR-26 (C-2646)
    Patent number: 5283047
    Abstract: A transition metal substituted form of the mineral gmelinite.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: February 1, 1994
    Assignee: Exxon Research and Engineering Company
    Inventors: David E. W. Vaughan, Karl G. Strohmaier
  • Supercritical mixed-solvent separation of polymer mixtures
    Patent number: 5264536
    Abstract: A supercritical separation process is proposed for polymers, utilizing mixed solvents. Such a process can be used to remove light end, or heavy end, or generate bulk fractions of low polydispersity. Three modes of operation are proposed: increasing solvent capacity, decreasing solvent capacity, and single-vessel multistage separation.
    Type: Grant
    Filed: June 2, 1992
    Date of Patent: November 23, 1993
    Assignee: Exxon Research and Engineering Company
    Inventor: Maciej Radosz
  • Polyimide/aliphatic polyester copolymers without pendent carboxylic acid groups (C-2662)
    Patent number: 5241039
    Abstract: The present invention includes new polyimide/polyester copolymers without pendent carboxyl groups, a method for their synthesis, and their use as membranes for aromatics/saturates separation.
    Type: Grant
    Filed: August 14, 1992
    Date of Patent: August 31, 1993
    Assignee: Exxon Research & Engineering Company
    Inventors: W. S. Winston Ho, Guido Sartori, Suh J. Han
  • Non-intrusive liquid flow meter for liquid component of two phase flow based on solid or fluid borne sound (C-2408)
    Patent number: 5218871
    Abstract: A method for measuring the mass flow rate of liquid flow exiting a two phase (gas/liquid) feed nozzle. The method includes determining the Power Spectral Density from the output of a vibrational sensor (accelerometer or dynamic pressure sensor) in close proximity to the nozzle or in contact with the fluid within the nozzle in a frequency band that includes resonant peaks whose magnitude or area is strongly dependent on the mass flow rate of the liquid and which increases as the flow increases. Measurement of the area of the resonant peaks or of a band of frequencies that includes them can be correlated with the liquid flow and is insensitive to the gas flow.
    Type: Grant
    Filed: June 20, 1991
    Date of Patent: June 15, 1993
    Assignee: Exxon Research and Engineering Company
    Inventors: George D. Cody, Charles L. Baker, Jr., Gerald V. Storch, Jr.
  • Multilayered catalyst for controlled transport of reactant
    Patent number: 5210059
    Abstract: The present invention is a multilayered catalyst structure coated onto the surface of a membrane which does not have physical micropores. The non-microporous membrane serves as a mechanical support for the thin multilayered catalyst structure and also can be used to control the rate at which some reactants arrive at (or some products leave from) the multilayered catalyst structure.A multilayered catalyst structure is coated on the non-microporous membrane which is composed of at least a catalyst layer and a separate transport layer.
    Type: Grant
    Filed: October 10, 1991
    Date of Patent: May 11, 1993
    Assignee: Exxon Research & Engineering Company
    Inventors: Michael G. Matturo, Harry W. Deckman, James A. McHenry, Robert P. Reynolds, Jr.
  • Non-intrusive flow meter for the liquid based on solid, liquid or gas borne sound
    Patent number: 5207107
    Abstract: A method for measuring the mass flow rate of liquid flow exiting a two phase (gas/liquid) feed nozzle. The method includes determining the Power Spectral Density from the output of an accelerometer in close proximity to the restriction orifice controlling the gas flow, or determining the Power Spectral Density from the output of a pressure transducer in contact with the gas flow on the down stream side of the restriction orifice. The liquid flow can then be obtained from a predetermined correlation between the RMS Vibrational Signal and the mass or liquid flow rate.
    Type: Grant
    Filed: June 20, 1991
    Date of Patent: May 4, 1993
    Assignee: Exxon Research and Engineering Company
    Inventors: Henry A. Wolf, Richard E. Walter, Linda Hofmann, George D. Cody, Gerald V. Storch, Jr.
  • Plasma polymer membrane (C-2564)
    Patent number: 5207909
    Abstract: The present invention is a membrane for separating aromatics from feeds which are mixtures of aromatics and saturates and for separating saturated linear hydrocarbons from feeds which are mixtures of saturated linear and saturated branched hydrocarbons. The membrane is a plasma polymer formed from plasma polymerizing monomers. In a preferred embodiment, the membrane is a plasma polymer film formed from plasma polymerizing the monomer 2,4 pentane dione.
    Type: Grant
    Filed: March 25, 1992
    Date of Patent: May 4, 1993
    Assignee: Exxon Research and Engineering Company
    Inventor: Benjamin Abeles
  • Synthesis of ECR-1 using methyltriethanolammonium cations
    Patent number: 5206005
    Abstract: The present invention is a method to make ECR-1 with a methylmethanol ammonium cation template. This new synthesis produces an improved product at lower cost, with improved catalytic properties.
    Type: Grant
    Filed: August 19, 1992
    Date of Patent: April 27, 1993
    Assignee: Exxon Research & Engineering Company
    Inventors: David E. W. Vaughan, Karl G. Strohmaier
  • Molybdenum phosphate compositions
    Patent number: 5200187
    Abstract: A class of new oxide structures containing octahedral molybdenum and tetrahedral phosphorous has been generated using hydrothermal, techniques. These materials are produced by the reaction of a molybdenum oxide source with phosphate and any one, or combination of organic cation/alkali-metal cation/organic amine as a templating/mineralizing agent. A reducing agent is necessary to convert the Mo(VI) to a lower valent form and can be either added to the reaction mixture or is provided in the form of one of the reactants.
    Type: Grant
    Filed: September 18, 1991
    Date of Patent: April 6, 1993
    Assignee: Exxon Research and Engineering Company
    Inventors: Robert C. Haushalter, Linda A. Mundi
  • On-stream method for detecting erosion or plugging for manifolded feed nozzle systems
    Patent number: 5193406
    Abstract: A on-line method for detecting erosion or plugging for manifolded feed nozzle systems which carry two-phase liquid/gas flow by determining a liquid flow parameter related to liquid flow. The method can determine whether the erosion is at the liquid nozzle or the gas restriction orifice. The amount of erosion or plugging can be quantified.
    Type: Grant
    Filed: June 20, 1991
    Date of Patent: March 16, 1993
    Assignee: Exxon Research and Engineering Company
    Inventors: Henry A. Wolf, Richard J. Bellows, George D. Cody
  • Trivalent transition-metal-aluminosilicate hydrocarbon conversion catalysts having mazzite-like structures, ECR-23-T (C-2491)
    Patent number: 5185136
    Abstract: This invention relates to novel zeolitic compositions having transition metals as well as aluminum and silicon in the framework tetrahedral positions. The composition has a structure similar to mazzite type zeolites. The invention also involves a process of preparation in which at least one transition metal is directly synthesized into the product.
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: February 9, 1993
    Assignee: Exxon Research and Engineering Co.
    Inventors: David E. W. Vaughan, Karl G. Strohmaier
  • Divalent transition-metal-aluminosilicate hydrocarbon conversion catalysts having mazzite-like structures, ECR-23-D (C-2494)
    Patent number: 5185137
    Abstract: This invention relates to novel zeolitic compositions having one or more transition metals as well as aluminum and silicon in the framework tetrahedral positions. The composition has a mazzite-like structure. The invention also involves a process of preparation in which at least one divalent transition metal is directly synthesized into the product.
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: February 9, 1993
    Assignee: Exxon Research and Engineering Company
    Inventors: David E. W. Vaughan, Karl G. Strohmaier
  • Transistion-metal-aluminosilicate hydrocarbon conversion catalysts having an L type structure, ECR-22-D
    Patent number: 5185138
    Abstract: This invention relates to novel zeolitic compositions having transition metals as well as aluminum and silicon in the framework tetrahedral positions. The composition has a structure similar to type-L aluminosilicate zeolites. The invention also involves a process of preparation in which one or more divalent transition metals is directly synthesized into the product metalo-aluminosilicate.
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: February 9, 1993
    Assignee: Exxon Research and Engineering Company
    Inventors: David E. W. Vaughan, Karl G. Strohmaier
  • Unsaturated polyesters and crosslinked membranes therefrom for aromatics/saturates separation
    Patent number: 5180496
    Abstract: The present invention describes a method for the synthesis of unsaturated aliphatic polyesters, their crosslinking by thermal treatment and the use of the corresponding crosslinked membranes to separate aromatics from saturates.
    Type: Grant
    Filed: April 16, 1992
    Date of Patent: January 19, 1993
    Assignee: Exxon Research and Engineering Company
    Inventors: Guido Sartori, W. S. Winston Ho, Robert E. Noone