Patents Represented by Attorney Ronald D. Hantman

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  • Saturated polyesters and crosslinked membranes therefrom for aromatics/saturates separation
    Patent number: 5177296
    Abstract: The present invention describes a method for the synthesis of saturated aliphatic polyesters by reaction of saturated or aromatic diacid chlorides with oligomeric aliphatic polyester diols, a method to thermally crosslink membranes prepared from the above saturated aliphatic polyesters, and the use of the crosslinked membranes to separate aromatics from saturates.
    Type: Grant
    Filed: April 16, 1992
    Date of Patent: January 5, 1993
    Assignee: Exxon Research and Engineering Company
    Inventors: Guido Sartori, W. S. Winston Ho, Bruce H. Ballinger
  • Polysulfone membranes for aromatics/saturates separation
    Patent number: 5159130
    Abstract: The present invention describes a method for separating mixtures of aromatics and non-aromatics into aromatic-enriched and non-aromatic-enriched streams by contacting the mixture with one side of a polysulfone membrane and selectively permeating the aromatic components through the membrane.
    Type: Grant
    Filed: June 24, 1991
    Date of Patent: October 27, 1992
    Assignee: Exxon Research and Engineering Company
    Inventors: Guido Satori, W. S. Winston Ho, Robert E. Noone
  • Unsaturated polyesters and crosslinked membranes therefrom for aromatics/saturates separation
    Patent number: 5138023
    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: October 11, 1991
    Date of Patent: August 11, 1992
    Assignee: Exxon Research and Engineering Company
    Inventors: Guido Sartori, W. S. Winston Ho, Robert E. Noone
  • Method of preparing crystalline ZSM-20 zeolites (C-2517)
    Patent number: 5133953
    Abstract: An improved method of preparing crystalline aluminosilicate zeolite ZSM-20, that involves preparing a reaction mixture having the formula, expressed in terms of mole ratio of oxides:(9-12)TEA.sub.2 O:(1-1.4)Na.sub.2 O:Al.sub.2 O.sub.3 :(20-28)SiO.sub.2 :(270-340)H.sub.2 Ofrom an alkali metal oxide source, tetraethylammonium (TEA) oxide, an aluminum oxide, a silicon oxide, tetraethylorthosilicate (TEOS) and water and seeding the reaction mixture with a seed solution having the formula, expressed in terms of mole ratio of oxides:(12-16)Na.sub.2 O:(0.8-1.2)Al.sub.2 O.sub.3 :(10-18)SiO.sub.2 :(250-500)H.sub.2 Oand heating the reaction mixture at temperatures ranging from about 80.degree. C. to about 120.degree. C. for a time sufficient to form crystals, wherein the time required for crystallization is shortened.
    Type: Grant
    Filed: April 17, 1991
    Date of Patent: July 28, 1992
    Assignee: Exxon Research and Engineering Company
    Inventors: David E. W. Vaughan, Karl G. Strohmaier
  • Saturated polyesters and crosslinked membranes therefrom for aromatics/saturates separation
    Patent number: 5128439
    Abstract: The present invention described a method for the synthesis of saturated aliphatic polyesters by reaction of saturated or aromatic diacid chlorides with oligomeric aliphatic polyester diols, a method to thermally crosslink membranes prepared from the above saturated aliphatic polyesters, and the use of the crosslinked membranes to separate aromatics from saturates.
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: July 7, 1992
    Assignee: Exxon Research and Engineering Company
    Inventors: Guido Sartori, W. S. Winston Ho, Bruce H. Ballinger
  • Crystalline zeolite ECR-35 and a method for producing same
    Patent number: 5116590
    Abstract: A synthetic large pore crystalline metalsilicate zeolite composition, designated as ECR-35, having the formula, expressed in term of mole ratio of oxides: ##STR1## where T is an organic cation selected from the group consisting of tetraethylammonium and methyltriethyl ammonium, and mixtures thereof and X is Al or Ga; wherein the composition consists of an X-ray diffraction pattern having the line intensities:______________________________________ Line # d(.ANG.) Intensity ______________________________________ (1) 15.00 .+-. 0.2 weak to very strong (2) 14.20 .+-. 0.2 very strong (3) 13.40 .+-. 0.2 weak to medium (4) 8.70 .+-. 0.2 medium (5) 8.03 .+-. 0.2 zero to medium (6) 7.40 .+-. 0.15 medium (7) 5.65 .+-. 0.
    Type: Grant
    Filed: July 9, 1991
    Date of Patent: May 26, 1992
    Assignee: Exxon Research and Engineering Company
    Inventors: David E. W. Vaughan, Karl G. Strohmaier, Michael M. J. Treacy, John M. Newsam
  • Molybdenum phosphate compositions
    Patent number: 5117019
    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: January 31, 1991
    Date of Patent: May 26, 1992
    Assignee: Exxon Research and Engineering Company
    Inventors: Robert C. Haushalter, Linda A. Mundi
  • Method for regenerating a Group VIII noble metal deactivated catalyst
    Patent number: 5106798
    Abstract: A method for regenerating a Group VIII noble metal catalyst which has been contaminated with coke during a reforming process. The method comprises (a) burning off the coke from the catalyst, (b) redispersing the noble metal on the surface of the catalyst support by contacting the catalyst with halogen gas and carbon dioxide, and (c) chemically reducing the catalyst. The presence of carbon dioxide in the redispersing step improves the activity of the regenerated catalyst.
    Type: Grant
    Filed: July 12, 1990
    Date of Patent: April 21, 1992
    Assignee: Exxon Research and Engineering Company
    Inventor: Shun C. Fung
  • Gallium silicate zeolite, ecr-9, and its metallo derivatives
    Patent number: 5096686
    Abstract: The present invention relates to a metallo gallium silicate zeolite, designated as ECR-9. It also relates to a process for preparation of the zeolite. The zeolite may be employed in catalytic, absorbent or separation applications, particularly in the separation of small molecules, or normal from iso-paraffins, or the preferential reaction of n-paraffins in a mixed hydrocarbon stream.
    Type: Grant
    Filed: October 9, 1990
    Date of Patent: March 17, 1992
    Assignee: Exxon Research and Engineering Company
    Inventors: David E. W. Vaughan, Karl G. Strohmaier
  • Halogenated polyurethanes
    Patent number: 5093003
    Abstract: A new copolymer composition comprising the soft segment of an aliphatic polyester and the hard segment of a highly halogenated polyurethane containing from 3 to 36 halogen atoms is disclosed. The new halogenated polyurethane copolymer membrane has high thermal stability, and good selectivity and permeability for separation of an aromatic/saturate mixture.
    Type: Grant
    Filed: March 25, 1991
    Date of Patent: March 3, 1992
    Assignee: Exxon Research and Engineering Company
    Inventors: W. S. Winston Ho, Guido Sartori, Warren A. Thaler, Bruce H. Ballinger, David C. Dalrymple, Robert P. Mastondrea
  • Automatic vehicle recognition and customer billing system
    Patent number: 5072380
    Abstract: The present invention is a system and method for identifying a vehicle in a prescribed area of a service station and associating services with the vehicle. Each vehicle includes a transponder. Communication between the transponder and the service stations is via radio frequency signals.
    Type: Grant
    Filed: June 12, 1990
    Date of Patent: December 10, 1991
    Assignee: Exxon Research and Engineering Company
    Inventors: Robert E. Randelman, Ronald R. Chance
  • Sulfonated polysulfone membranes for aromatics/saturates separation
    Patent number: 5055631
    Abstract: The present invention describes a method for separating mixtures of aromatics and non-aromatics by permeation through a sulfonated polysulfone membrane which is selective for aromatics.
    Type: Grant
    Filed: July 11, 1990
    Date of Patent: October 8, 1991
    Assignee: Exxon Research & Engineering Company
    Inventors: Guido Sartori, W. S. Winston Ho, Robert E. Noone, Abraham D. Cohen
  • Halogenated polyurethanes
    Patent number: 5028685
    Abstract: A new copolymer composition comprising the soft segment of an aliphatic polyester and the hard segment of a highly halogenated polyurethane containing from 3 to 36 halogen atoms is disclosed. The new halogenated polyurethane copolymer membrane has high thermal stability, and good selectivity and permeability for separation of an aromatic/saturate mixture.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: July 2, 1991
    Assignee: Exxon Research & Engineering Company
    Inventors: W. S. Winston Ho, Guido Sartori, Warren A. Thaler, Bruce H. Ballinger, David C. Dalrymple, Robert P. Mastondrea
  • Passive acoustics process to monitor fluidized bed flow
    Patent number: 5022266
    Abstract: A method for the non-intrusive determination of flow anisotropy through the cross-section of a two phase fluid bed reactor.
    Type: Grant
    Filed: March 2, 1989
    Date of Patent: June 11, 1991
    Assignee: Exxon Research and Engineering Company
    Inventors: George D. Cody, Eugene R. Elzinga, Jr., Charles L. Baker, Jr.
  • Passive acoustics system to monitor fluidized bed systems
    Patent number: 5022268
    Abstract: Vibrational Analysis technology translates acoustic/vibratory energy created by industrial processes into useful, process-related information. This invention enables a non-acoustical expert to easily collect and interpret the data.
    Type: Grant
    Filed: May 22, 1989
    Date of Patent: June 11, 1991
    Assignee: Exxon Research and Engineering Company
    Inventors: H. Alan Wolf, David L. Chu
  • Non-porous polycarbonate membranes for separation of aromatics from saturates
    Patent number: 5019666
    Abstract: The present invention is a method for separating aromatics from saturates using a non-porous polycarbonate membrane. In a preferred embodiment, the polycarbonate membrane may be crosslinked.
    Type: Grant
    Filed: March 9, 1990
    Date of Patent: May 28, 1991
    Assignee: Exxon Research and Engineering Company
    Inventors: Guido Sartori, W. S. Winston Ho, David W. Savage, Robert E. Noone, Robert P. Mastondrea
  • Process for preparation of an ECR-5 crystalline zeolite composition
    Patent number: 5015454
    Abstract: ECR-5, a twelve-ring zeolite isostructural with cancrinite, has been synthesized in an ammonia free system for the first time. A range of Li-Na alumino silicate compositions yields porous materials useful as catalysts and sorbents.
    Type: Grant
    Filed: May 2, 1990
    Date of Patent: May 14, 1991
    Assignee: Exxon Research & Engineering Company
    Inventor: David E. W. Vaughan
  • ECR-18, method of its preparation, and uses for sorption and separation
    Patent number: 5013536
    Abstract: This invention relates to a synthetic zeolite, designated as ECR-18, having a structure similar to the mineral paulingite, a process for preparation of the zeolite, and processes for the use of such products.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: May 7, 1991
    Assignee: Exxon Research and Engineering Company
    Inventors: David E. W. Vaughan, Karl G. Strohmaier
  • Polyarylate membranes or aromatics/saturates separation (C-2415)
    Patent number: 5012036
    Abstract: The present invention describes a method for separating mixtures of aromatics and non-aromatics into aromatic-enriched and non-aromatic-enriched streams by contacting the aromatic/non-aromatics mixture with one side of a polyarylate membrane and selectively permeating the aromatic components through the membrane.
    Type: Grant
    Filed: July 11, 1990
    Date of Patent: April 30, 1991
    Assignee: Exxon Research and Engineering Company
    Inventors: Guido Sartori, W. S. Winston Ho, Robert E. Noone
  • Polyphthalatecarbonate membranes for aromatics/saturates separation
    Patent number: 5012035
    Abstract: The present invention describes a method for separating mixtures of aromatics and non-aromatics into aromatic-enriched and non-aromatic-enriched streams by contacting the mixture with one side of a polyphthalate-carbonate membrane and selectively permeating the aromatic components of the mixture through the membrane.
    Type: Grant
    Filed: July 11, 1990
    Date of Patent: April 30, 1991
    Assignee: Exxon Research and Engineering Company
    Inventors: Guido Sartori, W. S. Winston Ho, Robert E. Noone