Patents Represented by Attorney, Agent or Law Firm R. L. Graham
  • Meltblowing die
    Patent number: 5269670
    Abstract: A meltblowing die assembly features (a) intermittent operation, (b) modular valve actuator to selectively shut off polymer flow, (c) an in-line electric heater, and (d) meltblowing units arranged in side-by-side relationship.
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: December 14, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Martin A. Allen, John T. Fetcko
  • Treatment of fresh water for zebra mussel infestation
    Patent number: 5256310
    Abstract: A method whereby a concentrated aqueous solution of chlorine dioxide is injected into offshore water intake facilities for preventing zebra mussel infestation therein is described. The chlorine dioxide is generated from generators positioned on a portable vessel above the water intake facilities. The treatment using concentrated chlorine dioxide solution permits periodic treatment so that the same portable generators may be used to treat a number of water intake facilities.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: October 26, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Gary E. Brooks
  • Charging method for meltblown webs
    Patent number: 5254297
    Abstract: Electrically charged meltblown webs are formed by convergingly discharging electrically charged hot air onto a row of extruded polymer fibers to contact the fibers thereby (i) attenuating and stretching the fibers and (ii) imparting an electric charge to the fibers. The fibers may be continuous or discontinuous.
    Type: Grant
    Filed: July 15, 1992
    Date of Patent: October 19, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventor: William E. Deeds
  • Metering meltblowing system
    Patent number: 5236641
    Abstract: A meltblowing system with a modular die design and on-line monitoring of web properties is described. The modular die consists of individually fed side-by-side meltblowing units. Automated control of the polymer feed rates to the units have been shown to produce a web with excellent uniformity of basis weight. The die also features a valve assembly for minimizing polymer afterflow and die tip plugging.
    Type: Grant
    Filed: September 11, 1991
    Date of Patent: August 17, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Martin A. Allen, John T. Fetcko
  • Conditioning of formation for sandstone acidizing
    Patent number: 5232050
    Abstract: A damaged zone of a subterranean oil-bearing formation is treated with four fluids:(a) an acid preflush; (b) solvent; (c) a formation conditioning fluid, preferably carbon dioxide, to miscibly displace oil from the damaged zone; and (d) a mud acid.
    Type: Grant
    Filed: March 24, 1992
    Date of Patent: August 3, 1993
    Inventor: John L. Gidley
  • Charged collector apparatus for the production of meltblown electrets
    Patent number: 5227172
    Abstract: The apparatus of the present invention employs a collector drum with an electrically charged surface for use in preparing electrically charged meltblown fibrous webs. The apparatus may be used as a primary charging system or, alternatively, with other charging system to enhance the charging of the web. The invention produces webs with exceptional filtration properties.
    Type: Grant
    Filed: May 14, 1991
    Date of Patent: July 13, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventor: William E. Deeds
  • Inhibited acid system for acidizing wells
    Patent number: 5209859
    Abstract: An acid system for acidizing wells contains corrosion inhibitor additives which consist essentially of a metal selected from antimony and antimony mixtures, a quaternary compound, and a surfactant. The corrosion inhibitor is free of toxic acetylenic compounds.
    Type: Grant
    Filed: February 12, 1992
    Date of Patent: May 11, 1993
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Dennis A. Williams, Phyllis K. Holifield, James R. Looney, Lee A. McDougall
  • Process for conditioning material for disposal
    Patent number: 5207532
    Abstract: Petroleum production, refining, and mining disposable deposits and sediments are treated with an oxidizing agent such as chlorine dioxide and/or particle separation to reduce the mass of disposable materials. The invention has particular application in treating deposits and sediments which contain naturally occurring radioactive material (NORM).
    Type: Grant
    Filed: January 9, 1991
    Date of Patent: May 4, 1993
    Assignees: Exxon Chemical Patents Inc., Rio Linda Chemical Company Inc.
    Inventors: John Y. Mason, Randall J. Block, Randall K. Tyler, John D. Milliken
  • Method of inhibiting corrosion in acidizing wells
    Patent number: 5200096
    Abstract: Corrosion inhibitor additives are added directly to an aqueous acid solution used in acidizing subterranean formations. The additives comprise a bismuth compound, a quaternary compound, and a surfactant. The corrosion inhibitor is free of toxic Sb and acetylenic compounds.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: April 6, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Dennis A. Williams, Phyllis K. Holifield, James R. Looney, Lee A. McDougall
  • Naphthenic acid corrosion inhibitors
    Patent number: 5182013
    Abstract: Naphthenic acid corrosion in refinery distillation units is inhibited by introducing into the units effective amounts of a polysulfide corrosion inhibitor.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: January 26, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Philip R. Petersen, Frederick P. Robbins, III, William G. Winston
  • Meltblowing die
    Patent number: 5145689
    Abstract: A meltblowing die assembly features (a) intermittent operation, (b) modular valve actuator to selectively shut off polymer flow, (c) an in-line electric heater, and (d) meltblowing units arranged in side-by-side relationship.
    Type: Grant
    Filed: October 17, 1990
    Date of Patent: September 8, 1992
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Martin A. Allen, John T. Fetcko
  • Method for continual monitoring and treating a hydrocarbon oil stream
    Patent number: 5132225
    Abstract: Samples of a petroleum oil stream (e.g. crude oil feed stream to a refinery) are continually monitored to determine incompatible asphaltenes therein and the rate of antifoulant is adjusted in response to changes in the level of incompatible asphaltenes. The method of the present invention employs thin layer chromatographic films for separating incompatible asphaltenes and for measuring an optical property indicative of the incompatible asphaltenes, and for varying antifoulant addition in response to changes of the optical property measured.
    Type: Grant
    Filed: June 14, 1991
    Date of Patent: July 21, 1992
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Ghazi B. Dickakian
  • Process for preventing fouling in the production of ethylene dichloride
    Patent number: 5110997
    Abstract: A method of inhibiting fouling in a crude ethylene dichloride stream comprises introducing into the stream an inhibiting amount of an antifoulant selected from (A) an acylated amine (e.g., reaction product of polyisobutylene and maleic anhydride) and a polyamine (B) magnesium alkyl aryl sulfonate, and (C) a mixture of A and B.
    Type: Grant
    Filed: April 19, 1991
    Date of Patent: May 5, 1992
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Ghazi B. Dickakian
  • Conditioning of formation for sandstone acidizing
    Patent number: 5099924
    Abstract: A damaged zone of a subterranean oil-bearing formation is treated with four sequential fluids:(a) a formation conditioning fluid, preferably carbon dioxide, to miscibly displace oil from the damaged zone;(b) an HCl acid preflush;(c) a mud acid; and(d) an afterflush.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: March 31, 1992
    Inventor: John L. Gidley
  • Method of inhibiting corrosion in acidizing wells
    Patent number: 5089153
    Abstract: Corrosion inhibitor additives are added directly to an aqueous acid solution used in acidizing subterranean formations. The additives consist essentially of a metal selected from antimony and antimony mixtures, a quaternary compound, and a surfactant. The corrosion inhibitor is free of toxic acetylenic compounds.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: February 18, 1992
    Inventors: Dennis A. Williams, Phyllis K. Holifield, James R. Looney, Lee A. McDougall
  • Meltblowing apparatus
    Patent number: 5087186
    Abstract: A meltblowing apparatus includes a die having a triangular nosepiece with a plurality of orifices at the apex of the nosepiece; a pair of air chambers positioned on both sides of the die; converging air passages formed on each side of the nosepiece; a plurality of holes interconnecting each air chamber with its associated air passage; and an air flow deflector in each flow passage.
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: February 11, 1992
    Assignee: Accurate Products Co.
    Inventor: Peter G. Buehning
  • Polymer article of manufacture
    Patent number: 5073276
    Abstract: A solid polymeric body comprising a polymer matrix containing a substantially water-insoluble reagent leachable into a substantially hydrocarbon liquid environment, the matrix being reagent permeative and the body preferably having a softening point substantially above that of the temperature of the liquid fluid environment in which it is to be employed. The body is useful for the introduction of an additive reagent into a substantially liquid hydrocarbon such as crude and refined oils.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: December 17, 1991
    Assignee: Exxon Research and Engineering Co.
    Inventors: John C. Newlove, Lee A. McDougall, John R. Walker, John R. Stockwell
  • Apparatus for delivering molten polymer to an extrusion
    Patent number: 5061170
    Abstract: A polymer metl delivery system includes a preheated hopper, a high clearance auger, a gear pump, and provisions for delivering heat to the polymer. The resin is melted and fed to the auger and pumped to the gear pump and further pump to an extrusion die. Heat is added to the polymers from the hopper and throughout its course to the outlet connection for the extrusion die. The preheated in the hopper includes heat conductive fins. The system is particularly suited for use in combination with a meltblowing die.
    Type: Grant
    Filed: December 8, 1989
    Date of Patent: October 29, 1991
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Martin A. Allen, John T. Fetcko
  • Method of improving formation permeability using chlorine dioxide
    Patent number: 5031700
    Abstract: Permeability of a subterranean formation is increased by injecting into the formation sufficient amount of chlorine dioxide solution to react with formation clays and silicates. The pH of the ClO.sub.2 solution is controlled between 0.01 and 3.2 using preferably a mineral acid and liquid CO.sub.2 blended with the aqueous ClO.sub.2 solution.
    Type: Grant
    Filed: June 15, 1990
    Date of Patent: July 16, 1991
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Lee A. McDougall, Dennis A. Williams
  • Method of treating subterranean formations using a non-damaging fracturing fluid
    Patent number: 5007481
    Abstract: Subterranean formations are fractured by use of an aqueous fracturing fluid containing an effective amount of a copolymer of acrylamide and potassium acrylate crosslinked with a titanium or zirconium compounds. The fracturing fluid also contains an oxidative gel breaker. The method is particularly suited for treatment of deep, high temperature formations.
    Type: Grant
    Filed: February 2, 1990
    Date of Patent: April 16, 1991
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Dennis A. Williams, Roger L. Horton, John C. Newlove, Robert E. Chumley