Patents Assigned to E
  • Non-slip rectilinear wiredrawing machine with synchronization between successive tangentially uncoiling capstans
    Patent number: 5136866
    Abstract: In a non-slip rectilinear wiredrawing machine with tangentially uncoiling pstans, each capstan is composed of two concentric and coaxial parts, the first of which driven by a motor and comprising the typical capstan pulling face, the second part a freely-revolving ring affording a run-out from which the wire is drawn through a die by and onto a successive capstan; the speed of the individual capstans is synchronized by a device capable of monitoring both the angular movement of the shaft driving the first part of the capstan and the angular movement of the ring, detecting any difference between the two, and correcting the angular velocity of the shaft accordingly.
    Type: Grant
    Filed: March 11, 1991
    Date of Patent: August 11, 1992
    Assignee: R. Lisciani Trailerie E. Divisione Dyn Automazione Industriale S.n.c.
    Inventor: Giulio Lisciani
  • Spinnable dopes and articles therefrom
    Patent number: 5137986
    Abstract: As-spun fibers from certain spinnable dopes of poly-p-phenylenebenzobisthiazole, poly-p-phenylenebenzobisoxazole, or poly-2,5-benzoxazole and thermoplastic polymers in certain mixed solvents are provided.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: August 11, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: William C. Uy
  • Floating self-centering turbine impeller
    Patent number: 5137418
    Abstract: A floating, self-centering impeller for a turbine pump assembly has a plurality of "D-shaped" recesses arranged in one or more circumferential rows on its end surfaces to induce pressurized film between its end surfaces and adjacent thrust surfaces of side plates to prevent galling or seizing of the pump as the impeller is rotated. A corresponding array of such "D-shaped" recesses may be provided on the opposing surfaces of the side plates.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: August 11, 1992
    Assignee: Roy E. Roth Company
    Inventor: Leonard J. Sieghartner
  • Reverse osmosis membranes of polyamideurethane
    Patent number: 5137606
    Abstract: The present invention is directed to an improved reverse osmosis membrane that shows surprisingly improved solute rejection and permeation properties. The membrane includes a separating layer of a polyamideurethane formed in situ by reaction of a haloformyloxy-substituted acyl halide with a diamine-treated substrate.
    Type: Grant
    Filed: September 5, 1991
    Date of Patent: August 11, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Samuel D. Arthur
  • Phase transfer catalyzed halogenation of carbon acids
    Patent number: 5138107
    Abstract: A process is disclosed for chlorinating, brominating and/or iodinating an organic substrate containing both a single acidic hydrogen atom and at least one electron withdrawing group attached to the same carbon atom. The process replaces the single acidic hydrogen with chlorine, bromine and/or iodine and involves reacting the substrate in solution with a halogenating agent (e.g., a perhalomethane wherein the halogen substituents are I, Br and/or Cl, a trihaloacetic acid ester wherein the halogen substituents are Br and/or Cl, or a perfluoroalkyl halide wherein the halide is I, Br and/or Cl) in the presence of (i) a phase transfer catalyst of the formula R.sup.1 R.sup.2 R.sup.3 R.sup.4 LJ where L is selected from the group consisting of phosphorus and nitrogen, where J is an inorganic anion other than fluoride, and where R.sup.1, R.sup.2, R.sup.3 and R.sup.
    Type: Grant
    Filed: July 12, 1991
    Date of Patent: August 11, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Yoel Sasson
  • Tablet composition and method for problem pharmaceutical materials using citric acid
    Patent number: 5137730
    Abstract: In accordance with the present invention an improved tablet composition for drugs or active ingredients prone to poor tabletting properties is disclosed. The improved composition comprises a premixture, consisting essentially of between about 85 and 99.9 percent by weight of the active ingredient and between about 0.1 and 15 percent by weight of citric acid, and one or more other formulation ingredients added to premixture. The present invention also involves the process for making such compositions and products therefrom.
    Type: Grant
    Filed: May 28, 1991
    Date of Patent: August 11, 1992
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Andrew B. Dennis, Peter Timmins, Himadri Sen
  • Hot melt adhesive compositions
    Patent number: 5137974
    Abstract: Hot melt adhesive composition of ethylene copolymer grafted with lactam oligomer, characterized by improved melt flow characteristics.
    Type: Grant
    Filed: April 25, 1990
    Date of Patent: August 11, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: George W. Prejean
  • Treatment of central nervous system disorders with benzimidazole angiotensin-II receptor antagonists
    Patent number: 5137906
    Abstract: Substituted benzimidazoles such as 2-butyl-1-[(2'-carboxybiphenyl-4-yl)methyl]-6-chlorobenzimidazole and pharmaceutically acceptable salts thereof are useful for treating central nervous system disorders, such as cognitive and learning disorders, mediated by angiotensin II.
    Type: Grant
    Filed: March 20, 1990
    Date of Patent: August 11, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Andrew T. Chiu, Victor J. De Noble, John J. V. Duncia, Pancras C. B. Wong
  • Continuous catalyzed vapor phase dimeric cyclic ester process
    Patent number: 5138074
    Abstract: A continuous catalyzed vapor phase process for the production of dimeric cyclic esters which comprises converting the corresponding alpha-hydroxy-carboxylic acid or ester in the vapor phase over a solid catalyst, such as a silica-alumina, preferably a silica-alumina having a high silica content, in the presence of a carrier of gas.
    Type: Grant
    Filed: June 28, 1990
    Date of Patent: August 11, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Harold E. Bellis, Kamlesh K. Bhatia
  • High yield recycle process for lactide
    Patent number: 5136057
    Abstract: Processes are described for recovering lactic acid from impure lactide and the residue produced in the depolymerization of polylactic acid to lactide. Lactic acid is recovered from the impure lactide by a dual solvent extraction process and, from the polylactic acid residue by hydrolysis. The lactic acid recovered from the impure lactide and the depolymerization residue is recycled to provide for a high yield lactide process.
    Type: Grant
    Filed: October 22, 1991
    Date of Patent: August 4, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Kamlesh K. Bhatia
  • Mattress cushion with multiple zones
    Patent number: 5134735
    Abstract: A single layer mattress cushion formed of a common material throughout and having three distinct convoluted zones arranged along its length. The first zone is specifically configured for supporting the shoulder and head area of a person while the middle zone is specifically formed for supporting the torso area of a person and the third zone is specifically formed for supporting the feet and lower leg portion of a person. Each of the cushion's three separate sleep areas has a different compression modulus such that the middle zone provides a maximum dual level peak support for the torso area while the first zone section provides a mid-range support function to the head and shoulders of the person and the third zone section provides light and well ventilated support for the legs and feet of the user.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: August 4, 1992
    Assignee: E. R. Carpenter Company, Inc.
    Inventor: Robert J. Rose
  • Connectors with ground structure
    Patent number: 5135405
    Abstract: The present invention relates to electrical connectors with a ground structure for impedance and cross talk control between signal carrying conductors.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: August 4, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: David F. Fusselman, Peter K. Townsend
  • Reactive-oligoimide adhesives, laminates, and methods of making the laminates
    Patent number: 5135815
    Abstract: A reactive oligoimide, which may serve as an adhesive for bonding at least one layer or film to another layer, preferably a flexible metallic layer to a flexible layer of a polyimide, in order to form a flexible multilayer metal-clad laminate.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: August 4, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Philip Manos
  • Photosensitive elastomeric element having improved solvent resistance
    Patent number: 5135837
    Abstract: A photosensitive elastomeric composition and process of using the composition to prepare flexographic printing plates having substantially improved solvent resistance are described.
    Type: Grant
    Filed: September 5, 1990
    Date of Patent: August 4, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: David W. Swatton
  • Hold-down terminal
    Patent number: 5135412
    Abstract: The present invention relates to hold-downs for securing components to circuit assemblies and more particularly to hold-down terminals for securing connectors to printed circuit boards.
    Type: Grant
    Filed: January 29, 1991
    Date of Patent: August 4, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Fred C. Sitzler
  • Heterocyclic ketone prostaglandin analogs
    Patent number: 5135939
    Abstract: Prostaglandin analogs useful in treating thrombotic and vasospastic disease having the structural formula ##STR1## wherein: m is 1, 2, or 3;n is 0, 1, 2 or 3;R.sup.1 is hydrogen, alkyl, alkenyl, alkynyl, aralkyl, aryl cycloalkyl, cycloalkylalkyl, cycloheteroalkyl, cycloheteroalkylalkyl, heteroaryl or heteroarylalkyl, each of R.sup.1 being unsubstituted or optionally substituted with alkyl, aryl, cycloalkyl, or cycloalkylalkyl;R.sup.2 is CO.sub.2 R CONHSO.sub.2 R.sup.3, CONHR.sup.4 ;R is hydrogen, alkyl, or alkali metal;X is O or NH;Y is --O--, a single bond or vinylene, except that Y cannot be --O--when n is O;Z is --CH.dbd.CH--, --(CH.sub.2).sub.2 --, or ##STR2## and the remaining symbols are as defined in the specification.
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: August 4, 1992
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Raj N. Misra
  • Hyperbranched polyesters
    Patent number: 5136014
    Abstract: This invention relates to hyperbranched, functional polyesters prepared by self-condensation of AB.sub.n -type monomers wherein n is at least 2 and wherein B moieties contain a terminal carboxylic acid group or derivative thereof, wherein A or B is carboxyl or hydroxyl-terminated moiety which is an aromatic or aliphatic amino. The polyesters have utility as rheology modifiers or drug delivery vehicles.
    Type: Grant
    Filed: June 22, 1990
    Date of Patent: August 4, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Garret D. Figuly
  • Polyolefin backside coating for photosensitive reproduction element
    Patent number: 5135836
    Abstract: A polyolefin coating provides slip and antiblock properties to a multilayer, peel-apart photosensitive element.
    Type: Grant
    Filed: September 20, 1991
    Date of Patent: August 4, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Richard P. Pankratz
  • Stable solutions of polyaniline and shaped articles therefrom
    Patent number: 5135682
    Abstract: Polyaniline fibers are spun from stable solutions of the polymer in certain amine solvents.
    Type: Grant
    Filed: March 15, 1990
    Date of Patent: August 4, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Jeffrey D. Cohen, Raymond F. Tietz
  • Method for catalytic production of hydrogen peroxide
    Patent number: 5135731
    Abstract: An improved process for directly producing hydrogen peroxide from oxygen and hydrogen is disclosed. Hydrogen and oxygen are contacted in the presence of a catalyst, acid, halide ions and a multifunctional phosphonate or phosphate preparation so as to increase hydrogen peroxide yield and decrease catalyst deactivation.
    Type: Grant
    Filed: May 15, 1991
    Date of Patent: August 4, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Lawrence W. Gosser, Michael A. Paoli