Patents Assigned to E
  • Patent number: 5891318
    Abstract: A process and a system uses a direct chlorination reactor for producing ethylene dichloride by direct chlorination, without the need for an oxychlorination unit. This ethylene dichloride may be used to make vinyl chloride monomer. In the process for making ethylene dichloride, ethylene and chlorine are both supplied to a direct chlorination reactor. The ethylene reacts with the chlorine to form ethylene dichloride. Chlorine is supplied to the direct chlorination reactor from an electrochemical cell which converts anhydrous hydrogen chloride to dry chlorine gas. This chlorine gas is purified and liquefied to form liquid dry chlorine, and the liquid dry chlorine is recycled to the direct chlorination reactor. The ethylene dichloride may be pyrolyzed to produce vinyl chloride monomer and anhydrous hydrogen chloride.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: April 6, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Francisco Jose Freire, Bruce Arthur Kaiser, Dennie Turin Mah, Vinci Martinez Felix
  • Patent number: 5891500
    Abstract: Package comprising a polymer blend of ionomer and polybutylene in which at least one seam is made up of the blend being sealed to itself.
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: April 6, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Vincent Brodie, III
  • Patent number: 5891568
    Abstract: Improved polyester fibers, filling materials and filled articles are provided by fibers of helical configuration, high void content and low friction.
    Type: Grant
    Filed: October 1, 1997
    Date of Patent: April 6, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: James Victor Hartzog, Juergen Musch, Darren Scott Quinn
  • Patent number: 5891963
    Abstract: Disclosed herein are processes for polymerizing ethylene, acyclic olefins, and/or selected cyclic olefins, and optionally selected olefinic esters or carboxylic acids, and other monomers. The polymerizations are catalyzed by selected transition metal compounds, and sometimes other co-catalysts. Since some of the polymerizations exhibit some characteristics of living polymerizations, block copolymers can be readily made. Many of the polymers produced are often novel, particularly in regard to their microsructure, which give some of them unusual properties. Numerous novel catalysts are disclosed, as well as some novel processes for making them. The polymers made are useful as elastomers, molding resins, in adhesives, etc. Also described herein is the synthesis of linear .alpha.-olefins by the oligomerization of ethylene using as a catalyst system a combination a nickel compound having a selected .alpha.-diimine ligand and a selected Lewis or Bronsted acid, or by contacting selected .alpha.
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: April 6, 1999
    Assignees: E. I. du Pont de Nemours and Company, University of North Carolina
    Inventors: Maurice S. Brookhart, Lynda Kaye Johnson, Christopher Moore Killian, Samuel David Arthur, Elizabeth Forrester McCord, Stephan James McLain
  • Patent number: 5892176
    Abstract: A cable for recording conditions in a well bore, the cable including a tube having a generally smooth outer surface and an inner surface defining an elongated, uninterrupted opening extending throughout the length of the tube, at least one fiber optic, disposed within the opening of the tube, the fiber optic extending the length of the tube, an electrical conductor disposed within the opening of the tube, the electrical conductor extending the length of the tube, and insulating material disposed within the tube, the insulating material encapsulating the fiber optic and electrical conductor so as to form a core, wherein the core is of substantially smaller diameter than the opening to permit thermal expansion of the fiber optic, the conductor and the insulating material. The size of the tube and the core may be selected such that there is an annulus between the inside surface of the tube and the outside surface of the core, the annulus providing a flowpath extending the length of the tube.
    Type: Grant
    Filed: November 5, 1996
    Date of Patent: April 6, 1999
    Assignee: Phillip E. Pruett
    Inventors: Mitchell Findlay, Phillip E. Pruett
  • Patent number: 5892135
    Abstract: A process for the production of trifluoroethylene (i.e., CF.sub.2 =CHF or HFC-1123) is disclosed. The process involves contacting (in the vapor phase) at least one halogenated ethane of the formula CF.sub.3 CClFX (where X is H, Cl or F) with hydrogen in the presence of a catalyst including at least one component selected from elemental metals, metal oxides, metal halides and metal oxyhalides. The metal of the component is ruthenium, copper, nickel, and/or chromium and the halogen of the halides and the oxyhalides is fluorine and/or chlorine.
    Type: Grant
    Filed: August 14, 1997
    Date of Patent: April 6, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: William H. Manogue, V.N. Mallikarjuna Rao
  • Patent number: 5892101
    Abstract: Disclosed is a process for the production of chemical intermediates by the cross dimerization of two compounds containing carbon-carbon double bonds, wherein said process is catalyzed by a nickel II catalyst which is a complex with .eta..sup.3 carbon-based allyl or substituted allyl, trisubstituted phosphine, and a weakly coordinating ligand. This catalyst may be used to selectively cross-dimerizes ethylene and methyl acrylate to give methyl 4-pentenoate, a nylon 6,6 intermediate.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: April 6, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Maurice S. Brookhart, Elisabeth Muriel Hauptman
  • Patent number: 5890302
    Abstract: A disposable protective shoecover for use by health care workers is formed by two pieces of fluid resistant, fluid proof, impermeable material sealed along the outer edges except at the back. The back of the shoecover is closed by two double coated adhesive closures spaced at two intervals along the back. The upper most closure is spaced two inches from the top of the shoecover. The closures can be easily released by inserting a finger in a top of the back of the shoecover and then removing the shoecover, whereby the finger only touches an interior of the shoe cover upon removal. This protects the wearer from touching any exterior portion of the shoecover which may be contaminated.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: April 6, 1999
    Assignee: E Jacquelyn Kirkis
    Inventor: E. Jacquelyn Kirkis
  • Patent number: 5891319
    Abstract: Carbonyl halide is produced from carbon monoxide and halogen produced from the electrochemical conversion of anhydrous hydrogen halide. Both the oxidation of anhydrous hydrogen halide and the formation of carbonyl halide are carried out in the anode-compartment of an electrochemical cell. This reduces the equipment and thus the capital investment necessary for carrying out these reactions. Moreover, no catalyst is needed to form halogen and subsequently make carbonyl halide, as in the prior art. In addition, the health hazards associated with making a carbonyl halide, such as phosgene, at high temperatures from chlorinated hydrocarbons with atmospheric oxygen are virtually eliminated. Furthermore, the halogen produced as a result of the oxidation of anhydrous hydrogen halide are dry, thereby eliminating the need for a preheater before the halogen is reacted with carbon monoxide.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: April 6, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Francisco Jose Freire, Kenneth Bernard Keating, Edward Kaoru Sakata
  • Patent number: 5891282
    Abstract: The joint between two drywall panels is taped with a paper tape which is backed with a pressure sensitive adhesive. After burnishing the applied tape with a metal or other stiff blade, a water-soaked sponge is moved along the burnished tape to soak the outwardly facing paper surface. The drywall mud is then applied to the wetted paper tape to bridge the joint between the panels without raised or protruding portions of the paper tape, thereby presenting a more continuous and aesthetically satisfying bridge between the panels.
    Type: Grant
    Filed: August 20, 1997
    Date of Patent: April 6, 1999
    Assignee: E-Z Taping System, Inc.
    Inventors: Ronald A. Stough, Edward A. Thompson, Gary L. Kozloski
  • Patent number: 5891985
    Abstract: A soluble mono-alkyl Stannoic Acid/glycol liquid phase catalyst produced from the reaction of a mono-alkyl Stannoic Acid and a glycol at a temperature of from at least 180.degree. C., and its use in preparing high molecular weight polyester polymers.
    Type: Grant
    Filed: October 1, 1997
    Date of Patent: April 6, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Edward Gus Brugel
  • Patent number: 5892781
    Abstract: Arrangements for high output power laser sources and optical fiber amplifiers are disclosed. In one arrangement, an optical fiber section which is doped with erbium, is coupled with one or two mirror elements, such as fiber Bragg gratings, to form a DBR or DFB fiber laser. The optical fiber section receives energy at one end from a pumping laser and lases at one or more selected wavelengths. This output light, along with energy from the pumping laser, is transmitted through the second end of the optical fiber section to an erbium-doped fiber amplifier, which boosts the laser output even higher. The gain of the optical fiber section may be further increased by co-doping the section with erbium and ytterbium. With co-doped optical fiber sections, high power output fiber optical amplifiers and laser sources, in the form of DBR and DFB fiber lasers, which can accept the pumping energies of a plurality of pumping lasers, can be created with properly selected WDM coupler and WDM coupler/isolator devices.
    Type: Grant
    Filed: September 2, 1997
    Date of Patent: April 6, 1999
    Assignee: E-Tek Dynamics, Inc.
    Inventors: Jing-Jong Pan, Yuan Shi
  • Patent number: 5890865
    Abstract: An automated device for lifting and loading materials employs a pick-up arm for engaging material at ground level and an associated, inverted U-shaped lift arm. The pick-up arm can be swung relative to the lift arm about a vertical axis to bring the pick-up arm into a close-in position in front of a cab and into an outreaching position. The pick-up arm is automatically moved into the outreaching position as the lift arm moves toward a ground-level load position and is automatically moved into the close-in position as the lift arm moves toward the off-load level above ground to facilitate off-loading operations above ground. When moved closer toward the off-load position, the pick-up arm is automatically vertically tipped to facilitate off-loading operations. During off-loading operations, the vertical height of the container and lift arm assembly is minimized through the use of a dump link and associated four-bar linkage.
    Type: Grant
    Filed: November 24, 1995
    Date of Patent: April 6, 1999
    Assignee: McClain E-Z Pack
    Inventors: Fred T. Smith, Fred P. Smith, William Johnson, Larry D. Horning
  • Patent number: 5892122
    Abstract: An improved method for making cyclohexanone and cyclohexanol from oxidation of cyclohexane in which a polyprotic acid is used to neutralize caustic to prevent oligomerization of cyclohexanone during fractional distillation.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: April 6, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John Joseph Ostermaier, George Crumbaugh Russell, III
  • Patent number: 5892123
    Abstract: A method is disclosed for catalytically decomposing cyclododecyl hydroperoxide into cyclododecanone and cyclododecanol using a chromium catalyst.
    Type: Grant
    Filed: February 3, 1998
    Date of Patent: April 6, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Howard Wayne Anderson, James Bernard Sieja
  • Patent number: 5887749
    Abstract: A food container especially for pet feeding has a plurality of compartments at least one compartment of which is circular to house canned wet food. The inside walls of the compartments include a upper rim wall portion set back at a rim wall base elevation between the compartment floors and the container top surface that is the same in all compartments. The setback provides a continuous shoulder lining each compartment adjacent the rim wall base. A lid for the container has at least one closed course protrusion raised in the underside of the lid. The protrusion has peripheral shape and outside dimensions sufficiently corresponding to the peripheral shape and internal dimensions of the rim walls of the circular and the other of the compartments, to interferingly nest the protrusion within the circular and other compartments above the shoulder of the compartments.
    Type: Grant
    Filed: September 15, 1997
    Date of Patent: March 30, 1999
    Assignee: Philip E. Schommer
    Inventors: Philip E. Schommer, David L. Waldron
  • Patent number: 5889904
    Abstract: A fiberoptic coupler capable of many functions is presented. The basic fiberoptic coupler has a first sleeve, a second sleeve, a first collimating GRIN or conventional lens, and a second collimating GRIN or conventional lens. The first sleeve holds end sections of two or more input optical fibers along the longitudinal axis of the sleeve. The second sleeve holds an end section of at least one output optical fiber. The end face of the second sleeve faces the first sleeve end face. The first collimating GRIN or conventional lens in front of the first sleeve end face collimates light signals from the input optical fibers and the second collimating GRIN or conventional lens in front of the second sleeve end face focusses light signals from at least one of the input optical fibers into the single output fiber, or at least one of the output optical fibers. With only one output fiber the coupler operates as a combiner.
    Type: Grant
    Filed: February 7, 1997
    Date of Patent: March 30, 1999
    Assignee: E-Tek Dynamics, Inc.
    Inventors: Jing-Jong Pan, Ming Shih, Jingyu Xu
  • Patent number: 5888701
    Abstract: A photosensitive printing element having an overall layer of powder material and a process for making a flexographic printing plate from such an element are disclosed. The photosensitive element includes a support, a photopolymerizable layer, and a layer of powder material on the photopolymerizable layer. The layer of powder material can be opaque or transparent depending upon desired use.
    Type: Grant
    Filed: October 1, 1997
    Date of Patent: March 30, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Roxy Fan
  • Patent number: 5887874
    Abstract: In one form of the game, the player must maintain her face in position to be sprayed while using a tool to capture or manipulate a visually observed object. This game may include an open electrical circuit that mishandling of the tool causes to close to direct a spray at the player.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: March 30, 1999
    Assignee: Adolph E. Goldfarb
    Inventors: Adolph E. Goldfarb, Martin I. Goldfarb
  • Patent number: 5888424
    Abstract: Fluoroplastics become identifiable as to source by incorporating 1 to 450 ppm of inorganic phosphor into the fluoroplastic which does not degrade the fluoroplastic upon processing at a temperature of 300.degree. C. and does not discolor the fluoroplastic but does emit radiation which is characteristic of the phosphor when the fluoroplastic is exposed to excitation radiation.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: March 30, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Sina Ebnesajjad, Vadim Leonidovitch Lichtchinski, Carmine Torardi, Robert Clayton Wheland