Patents Assigned to E
  • Thermoplastic blends of ABS containing ethylene terpolymers
    Patent number: 5086113
    Abstract: Terpolymers of various amounts of polymer repeat units of ethylene, ethyl acrylate, and carbon monoxide are intimately admixed with acrylonitrile/butadiene/styrene (ABS) resin to form a blend with a flex modulus of at least 1700 MPa. The resulting blend has enhanced impact strength properties over the resin alone. Such blends are useful as molding resins. The process for preparation of the blend involves admixing the terpolymer with the ABS resin.
    Type: Grant
    Filed: November 28, 1990
    Date of Patent: February 4, 1992
    Assignee: E. I. Du Pont de Nemours & Company
    Inventors: Kathryn A. Kamins, Robert J. Statz
  • Polymerization of selected vinyl monomers
    Patent number: 5086137
    Abstract: A process in which selected vinyl monomers, such as acrylic esters and acids, and chloroprene are polymerized by contacting them with an aryl diazotate or a metal cyanate in the presence of certain halogenated organic compounds. The process is especially useful for preparing block copolymers.
    Type: Grant
    Filed: August 6, 1990
    Date of Patent: February 4, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Joe D. Druliner, Michael Fryd
  • Method and apparatus for referencing a cassette and/or an intensifying screen on a radiograph
    Patent number: 5086445
    Abstract: The present invention relates to a method and apparatus for imprinting information, particularly identifying an intensifying screen and cassette used to produce a radiograph, permanently on the radiograph.
    Type: Grant
    Filed: September 13, 1990
    Date of Patent: February 4, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Edwin W. Fisher, Christopher Schreiber, Douglas R. Walker
  • Aqueous pigmented inks for ink jet printers
    Patent number: 5085698
    Abstract: A pigmented ink for ink jet printers which comprises an aqueous carrier medium, and pigment particles dispersed in an AB or BAB block copolymer having a hydrophilic segment and a segment that links to the pigment. The A block and the B block(s) have molecular weights of at least 300. These inks give images having good print quality, water and smear resistance, lightfastness, and storage stability.
    Type: Grant
    Filed: April 11, 1990
    Date of Patent: February 4, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Sheau-Hwa Ma, Howard Matrick, Arthur C. Shor, Harry J. Spinelli
  • Connector having a switching device
    Patent number: 5086284
    Abstract: A connector comprising a carrier body with at least two contact elements and a magnetically actuatable switching device. The switching device is arranged to electrically connect or disconnect the two contact elements when the connector mates with or disconnects from another connector. Control means activate the switching device. The control means includes a movably disposed tracer finger. In a preferred embodiment, the switching device includes a reed relay which is activated by a permanent magnet.
    Type: Grant
    Filed: January 8, 1990
    Date of Patent: February 4, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Bob Mouissie
  • Doped crystalline compositions and a method for preparation thereof
    Patent number: 5084206
    Abstract: A composition is disclosed which consists essentially of doped crystalline MTiOXO.sub.4 (wherein M is selected from the group consisting of K, Rb and Tl, X is selected from the group consisting of P and As) which contain at least about 100 ppm total of at least one dopant selected from the group consisting of Ga, Al and Si. The compositions generally have low ionic conductivity, and may be prepared using an improved flux process wherein Ga, Al and/or Si dopant is added to the flux in a total amount of at least about 0.5 mole % and the crystallization temperature is controlled to provide a crystalline composition containing the desired amount of dopant.
    Type: Grant
    Filed: February 2, 1990
    Date of Patent: January 28, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Albert A. Ballman, John D. Bierlein, August Ferretti, Thurman E. Gier, Patricia A. Morris
  • Dispersible aramid pulp
    Patent number: 5084136
    Abstract: A process is disclosed for making a compacted, redispersible, aramid pulp fiber product wherein aramid pulp is opened using the forces of a turbulent air grinding mill and then the opened pulp is compacted to the extent desired for shipping.
    Type: Grant
    Filed: February 28, 1990
    Date of Patent: January 28, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Dina M. Haines, Thomas F. Schuler
  • Laminates utilizing chemically etchable adhesives
    Patent number: 5084345
    Abstract: A multilayer laminate having a metallic layer and a dielectric layer, such as a chemically etchable polyimide, bonded to each other with a chemically etchable adhesive containing phenolic ester groups in the backbone.
    Type: Grant
    Filed: November 26, 1990
    Date of Patent: January 28, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Philip Manos
  • Epoxidation of fluorine containing olefins
    Patent number: 5084583
    Abstract: The synthesis of epoxides from fluorine containing olefins using elemental fluorine in mixtures of water and acetonitrile is disclosed.
    Type: Grant
    Filed: January 9, 1991
    Date of Patent: January 28, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Shlomo M. Rozen, Bruce E. Smart
  • Magnetic field generating apparatus
    Patent number: 5084677
    Abstract: Magnetic field generating apparatus for example for use in a nuclear magnetic resonance system comprises a first set of coils for generating a first magnetic field in a working volume outside the volume defined by the coils. A separate, second coil is provided spaced from the first set of coils for generating a second magnetic field in the working volume. The arrangement is such that the resultant magnetic field in the working volume is substantially homogeneous. An active shield coil may optionally be provided around the first set of coil.
    Type: Grant
    Filed: May 31, 1990
    Date of Patent: January 28, 1992
    Assignees: Oxford Medical Limited, E. I. Du Pont de Nemours and Company
    Inventor: Ian L. McDougall
  • Low-temperature synthesis of group III-group V semiconductors
    Patent number: 5084128
    Abstract: This invention relates to a low-temperature process for the preparation of group III-group V semiconducting material. More particularly, in the present process at least one group III compound is reacted with at least one group V compound in an aprotic solvent to form a precursor, which is then heated to form the semiconducting material.
    Type: Grant
    Filed: October 23, 1990
    Date of Patent: January 28, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ralph T. Baker
  • Soybean plants with dominant selectable trait for herbicide resistance
    Patent number: 5084082
    Abstract: The utilization of a positive selection seed screening process to isolate rate variants with resistance to a herbicide is described. The ability to screen large numbers of mutagenized seed has made it feasible to pursue and isolate plants with low frequency dominant herbicide-resistance mutations. The dominant herbicide resistance mutations are useful for many applications including expanding the utility of sulfonylurea herbicides for soybean weed control, production of F.sub.1 and F.sub.2 seeds, and as selectable markers for efficient seed purification.
    Type: Grant
    Filed: February 20, 1990
    Date of Patent: January 28, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Scott A. Sebastian
  • Method for determining level of bulk and control thereof
    Patent number: 5084823
    Abstract: An apparatus that includes speed, temperature, tension, position and pressure sensors on a BCF yarn spinning machine in connection with a digital computer incorporates models in the computer which predict yarn bulk and dyeability properties as a function of sensor inputs: hot roll temperature, bulking jet temperature, ladder guide tension, relative viscosity, draw zone tension, Hall-effect Watt-meter measuring the power consumption of the spinning pump, finish roll speed, takeup roll speed, wind up speed and wind up tension.
    Type: Grant
    Filed: November 9, 1989
    Date of Patent: January 28, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Richard S. Andrews, III, Nitin J. Champaneria
  • Preparation of articles of manufacture from isotropic and anisotropic polyamide anion solutions
    Patent number: 5084497
    Abstract: A process for preparing shaped articles of manufacture such as fibers, films and coatings from aromatic polyamide anions in liquid sulfoxides; anisotropic solutions of aromatic polyamide anions useful for the preparation of shaped articles having anistropic properties; isotropic solutions comprising the potassium salt of the polyamide anion; and methods for regulating solution viscosity by control of the degree to which the aromatic polyamide anions are deprotonated.
    Type: Grant
    Filed: May 30, 1990
    Date of Patent: January 28, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert R. Burch, Jr., Hans-Werner Schmidt
  • Process for preparing (3R-(3a.alpha.,4.beta.,7.beta..beta.,7a.alpha.))-octahydro-4,7 epoxyisobenzofuranol from associated aldehydes
    Patent number: 5084581
    Abstract: Disclosed herein is a novel process in which novel aldehydes ##STR1## and the trans isomer thereof are hydrolyzed by treatment with an alkali metal carbonate, bicarbonate or hydroxide and water to form the cis enantiomer ##STR2## Also disclosed is a process for preparing [1S-[1.alpha., 2.alpha.(Z), 3.alpha., 4.alpha.]]-7-[3[[[[(1-oxoheptyl)amino]acetyl]-amino ]methyl-7-oxabicyclo-[2.2.1]hept-2-yl]-5-heptenoic acid using the above process.
    Type: Grant
    Filed: December 18, 1990
    Date of Patent: January 28, 1992
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: David Kronenthal, John K. Thottathil
  • Suction cup for curling a sheet near its edge and method of use
    Patent number: 5083764
    Abstract: The present invention relates to a method and apparatus for moving sheets from substrates without substantially moving the substrate and, specifically, where the sheets are sheets of X-ray film and the substrates are screens found in conventional X-ray cassettes or other sheets in a closely packed stack of sheets. The method and apparatus use at least one suction cup for curling and, thereby, lifting a portion of a sheet near an edge thereof allowing air to partially enter underneath the sheet. The suction cup has a sheet contacting face with a recess extending into the face where the recess is defined by an inner conical surface, a first planar surface and a second planar surface.
    Type: Grant
    Filed: July 16, 1990
    Date of Patent: January 28, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Robert W. Chambers
  • Microbiological hydrolysis for the preparation of (exo,exo)-7-oxabicyclo(2.2.1) heptane-2,3, monoacyl ester dimethanol
    Patent number: 5084387
    Abstract: Disclosed herein is a process for preparing a novel monoester of the formula ##STR1## in which the associated novel diester ##STR2## is hydrolyzed in the presence of one or more water-soluble enzymes or microorganisms capable of selectively hydrolyzing the --O--C(O)--R.sup.1 group, wherein the treatment is carried out in a biphasic solvent system comprising an aqueous phase having the enzymes or microorganisms and an organic phase immiscible in water having the diester. Also disclosed is a process for preparing [1S-[1.alpha., 2.alpha.(Z),3.alpha.,4.alpha.]]-7-[3[[[[(1-oxoheptyl)amino]acetyl]-amino]m ethyl-7-oxabicyclo-[2.2.1]hept-2-yl]-5-heptenoic acid using this enzymatic/microbial process.
    Type: Grant
    Filed: December 18, 1990
    Date of Patent: January 28, 1992
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Ramesh N. Patel, Laszlo J. Szarka, John K. Thottathil, David Kronenthal
  • Process for stabilizing copolymers of ethylenically unsaturated fluoro compounds with vinyl ethers
    Patent number: 5084498
    Abstract: A copolymer of an unsaturated fluoro compound with a vinyl ether and, optionally, with at least one additional ethylenically unsaturated monomer can be stabilized against gelling by the addition, either to the copolymerization reaction or to the copolymer in solution or in aqueous dispersion, of a 2,2-unsubstituted alicyclic 1,3-diketone in the presence of the enolate ion of said ketone, which enolate may be formed in situ. Solutions and dispersions of such copolymers are very useful in hard, weather-resistant finishes, for example, those used for bridge ironwork and architectural maintenance and in automotive applications.
    Type: Grant
    Filed: October 17, 1990
    Date of Patent: January 28, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Norman M. van Gulick
  • Cleaning composition of dibasic ester, hydrocarbon solvent, compatibilizing surfactant and water
    Patent number: 5084200
    Abstract: A cleaning composition is disclosed which is suitable for cleaning flux residue from a printed circuit board and comprises dibasic ester, a hydrocarbon solvent, a compatibilizing surfactant and water.
    Type: Grant
    Filed: August 7, 1989
    Date of Patent: January 28, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Kenneth T. Dishart, Mark C. Wolff, Harold L. Jackson
  • Fish hook hold-downs
    Patent number: 5083942
    Abstract: The present invention relates to hold-downs for securing components to circuit assemblies and more particularly to fish hook hold-downs for securing connectors to printed circuit boards.
    Type: Grant
    Filed: February 13, 1991
    Date of Patent: January 28, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Marlyn E. Hahn