Patents Assigned to E
  • Photopolymerizable printing plate for flexographic printing
    Patent number: 5210004
    Abstract: A photopolymerizable printing element comprising a photopolymerizable layer and an elastomeric layer coated thereon wherein said elastomeric layer contains at least one thermoplastic, elastomeric block copolymer and at least one reaction product of an epoxide resin with a rosin derivative. The element produces flexographic printing plates having improved printing results with aqueous and alcoholic printing inks.
    Type: Grant
    Filed: July 8, 1991
    Date of Patent: May 11, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Werner Abele
  • High efficiency refrigerant recovery system
    Patent number: 5209074
    Abstract: The invention is directed to a process and apparatus for recovering refrigerant from a refrigeration purge stream wherein a gaseous purge stream containing a refrigerant and non-condensible gasses is countercurrently contacted with a high boiling point liquid which absorbs the refrigerant from the purge stream. Preferably a scrubbing column is used to effect countercurrent contact between the purge stream and the liquid stream.
    Type: Grant
    Filed: December 18, 1991
    Date of Patent: May 11, 1993
    Assignee: E. I. du Pont de Nemours & Company
    Inventors: Donald E. McConnell, William E. Holland, Mark A. Casey
  • Fluid distribution system having noise reduction mechanism
    Patent number: 5209259
    Abstract: A fluid distribution system, such as a valve, comprises a housing having a chamber which has a plurality of acoustic modes. The acoustic modes are excited when fluid flows through the chamber. An inlet passage and an outlet passage are disposed in fluid communication with the chamber. A plate is disposed in the inlet passage. A plurality of orifices are formed in the plate. The orifices conduct fluid from the inlet passage to the chamber and reduce the coupling between the flow of fluid through the inlet passage and the acoustic modes of the chamber. With this arrangement, the acoustic modes of the chamber and the resonance frequency of each of the orifices are substantially unexcited by the flow of fluid through the orifices.
    Type: Grant
    Filed: January 15, 1991
    Date of Patent: May 11, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Terrence A. Dear, Karl U. Ingard
  • Process for the preparation of images on tonable, light-sensitive layers
    Patent number: 5210001
    Abstract: A process for preparing images on a tonable, light-sensitive layer in which a transfer layer containing a toner and a core/shell polymer as a binder is used. The core polymer has a glass transition temperature above 50.degree. C. and the shell polymer has a glass transition temperature below 40.degree. C. Such transfer layers are used in proofing processes for high quality printing.
    Type: Grant
    Filed: April 6, 1992
    Date of Patent: May 11, 1993
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Helmut Frohlich, Michael Fryd
  • Homogeneous, high modulus ultrahigh molecular weight polyethylene composites and processes for the preparation thereof
    Patent number: 5210130
    Abstract: A homogeneous composite is provided comprising (a) about 0.5 to 90% by weight of an ultrahigh molecular weight linear polyethylene having a molecular weight of at least about 400,000, a crystalline melting point of greater than 143.degree. C., the reduction of said melting point upon remelting being at least 3.degree. C., and a crystal morphology comprising a bimodal distribution of molecular chain fold spacings reflecting significant populations of both folded and very highly extended molecular chains, and (b) about 0.5 to 90% by weight of at least one filler compound having a neutral-to-acidic surface, said polyethylene being polymerized onto the surface of said filler, and said composite being substantially free of polymer-free filler and of filler-free polymer. Also provided are processes for the preparation of such composites.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: May 11, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Edward G. Howard, Jr.
  • Mowing device
    Patent number: 5209054
    Abstract: A two-piece cutter member for mounting on a sickle bar has a rigid thin support element arranged for relatively permanent attachment to a sickle bar, and a flat planar pyramid-shaped spring metal blade. A portion of the blade provides at least one bridge or loop for encircling the support element and holding the blade on the support element. A section of either said the portion or the support element is displaced with respect to the support face to releasably hold the blade on the support when the blade is fully positioned on said support element.
    Type: Grant
    Filed: March 21, 1991
    Date of Patent: May 11, 1993
    Assignee: James E. Cummings
    Inventor: Francis J. Lawson
  • Method for preparing a phosphonic acid ester
    Patent number: 5210262
    Abstract: A method is provided for preparing a phosphonic acid ester having the structure ##STR1## wherein R.sup.1 is farnesyl or a derivative or analog thereof, and R.sup.2 is lower alkyl, by treating a farnesyl halide R.sup.1 Hal(Hal=Cl,Br,I) with an alkoxide of the structure ##STR2## wherein M is an alkali metal and R.sup.2c is lower alkyl. The resulting phosphonic acid ester is an intermediate in preparing a squalene synthetase inhibitor which is used for inhibiting cholesterol biosynthesis.
    Type: Grant
    Filed: September 14, 1992
    Date of Patent: May 11, 1993
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Janak Singh, Richard H. Mueller
  • Herbicidal pyridinesulfonylureas
    Patent number: 5209770
    Abstract: This invention relates to herbicidal pyridinesulfonylureas which are highly active as preemergence and postemergence herbicides.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: May 11, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Paul H. Liang
  • Cyclic perfluoropolyether
    Patent number: 5210233
    Abstract: Novel hydroxy containing fluorovinyl ethers, polymers of hydroxy containing fluorovinyl ethers, novel cyclic ethers, copolymers of selected hydroxy containing fluorovinyl ethers, a process for reducing ester containing fluorovinyl compounds to the corresponding alcohol with borohydrides, and a process for polymerizing hydroxy containing fluorovinyl ethers are disclosed.
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: May 11, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William B. Farnham, Ming-Hong Hung
  • Stabilization of choline and its derivatives against discoloration
    Patent number: 5209858
    Abstract: The stabilization of aqueous or alkanolic solutions of choline and derivative of choline against discoloration on aging by the addition of an unsubstituted hydroxylamine salt to the choline solutions at levels of less than 1 percent.
    Type: Grant
    Filed: February 6, 1991
    Date of Patent: May 11, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: George E. Heinsohn, Rudolf E. Svadlenak
  • Method of making fibrids
    Patent number: 5209877
    Abstract: A thickener for liquids is disclosed. The thickener consists of organic polymer fibrid particles with a very small size, a very high aspect ratio, and very low bulk density. The thickener is made by drying newly-coagulated fibrid particles in a way that results in high particulate surface area.
    Type: Grant
    Filed: March 19, 1992
    Date of Patent: May 11, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Arnold Frances, Lee J. Hesler, James E. Van Trump, Rita M. Vasta
  • Automatic leak detection apparatus for process fluids from production and/or research plants, in particular energy plants
    Patent number: 5210526
    Abstract: An automatic leak detection apparatus for process fluids from production and/or research plants, in particular energy plants comprises three different and separate sets of sensors, the first of which analyzes signals sensed in the visual spectrum through a telecamera, the second set analyzes signals sensed in the infrared spectrum through a thermocamera, and the third set analyzes qualitatively and quantitatively any change in the composition of the environmental atmosphere through a chemical-excitation mass spectrometer, and means adapted to process data supplied by said three sets of sensors, to compare said data with reference data, to store said data, to generate alarm signals at different levels, and to give assistance, if necessary.
    Type: Grant
    Filed: October 11, 1990
    Date of Patent: May 11, 1993
    Assignee: Ente per le Nuove Technologie, l'Energia e l'Ambiente (ENEA)
    Inventor: Franco Imperiali
  • Recovery of lactate esters and lactic acid from fermentation broth
    Patent number: 5210296
    Abstract: The production of high purity lactate ester or lactic acid from a concentrated fermentation broth by continuous acidification in the presence of an alcohol diluent with sequential or simultaneous esterification, distillation off of high purity ester, and, if desired, hydrolysis of the ester to high purity lactic acid.
    Type: Grant
    Filed: June 20, 1991
    Date of Patent: May 11, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Michael C. M. Cockrem, Pride D. Johnson
  • Treatment of chronic renal failure with imidazole angiotensin-II receptor antagonists
    Patent number: 5210079
    Abstract: Substituted imidazoles such as 2-butyl-4-chloro-1-[(2'-(1H-tetrazol-5-yl)biphenyl-4-yl)methyl]-5-(hydroxy methyl)imidazole and 2-butyl-4-chloro-1-[(2'-carboxybiphenyl-4-yl)-methyl]-5-(hydroxymethyl)imi dazole and pharmaceutically acceptable salts thereof are useful for treating chronic renal failure, mediated by angiotensin-II.
    Type: Grant
    Filed: February 7, 1992
    Date of Patent: May 11, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: David J. Carini, John Jonas V. Duncia, Pancras C. Wong
  • Process for preparing mounting tapes for automatic mounting of electronic components
    Patent number: 5210006
    Abstract: The process of the invention produces tapes for automatic mounting of electronic components. These mounting tapes have metallic conductive tabs with metallic bumps on at least one of their ends. The metallic bumps can be thermally welded or soldered, have well-defined areas and heights, and adhere well to the conductive tabs.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: May 11, 1993
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Manfred Sondergeld
  • Adhesives for laminating vinyl to various substrates
    Patent number: 5209983
    Abstract: Adhesives suitable for preparing laminates of polyvinyl chloride or polyvinyl chloride copolymers with wood or metal are prepared from a three component polymer mixture of polyvinyl chloride or its copolymers itself, a direct ethylene copolymer preferably containing units derived from carbon monoxide, and another direct ethylene copolymer containing units derived from a monomer containing glycidyl units. The adhesive is especially useful for preparing PVC/wood laminates which are subject to outdoor weathering.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: May 11, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ronald B. Case, Robert J. Statz
  • Moisture-curable melt-processible ethylene copolymer adhesives
    Patent number: 5210150
    Abstract: Moisture-curable melt-processible adhesives are obtained by reacting certain ethylene copolymers containing an n-alkyl acrylate and a carefully limited amount of a carboxylic acid with a stoichiometric amount of an epoxy-silane. A process of preparing the moisture-curable melt-processible adhesives in the absence of solvent is also available.
    Type: Grant
    Filed: November 22, 1991
    Date of Patent: May 11, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George W. Prejean
  • Degradable foam materials
    Patent number: 5210108
    Abstract: Environmentally benign closed cell compositions made by foaming star-shaped polymers with a plurality of poly(hydroxy acid) chains attached to a central polyfunctional compound having a plurality of hydroxyl and/or amino groups.
    Type: Grant
    Filed: July 29, 1992
    Date of Patent: May 11, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Maria Spinu, Thomas M. Ford
  • Preparation of purified concentrated BDO
    Patent number: 5209825
    Abstract: A distillation process for the preparation of purified concentrated BDO.High boiling impurities, including color formers, precursors of color formers and tar formers are removed from the BDO early in the process and under mild conditions.
    Type: Grant
    Filed: April 24, 1991
    Date of Patent: May 11, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Hashim M. Badat, Peter G. Gelblum, Robert E. Trotter
  • Key coupling device for high-speed rotary dobbies
    Patent number: 5209270
    Abstract: A control device for rotary dobbies in which a key has a transverse groove of width equal to the thickness of a control ring with which it cooperates plus the length of travel undergone by the key in its insertion into or withdrawal from radial grooves in a big end of a main crank arm or in a drive shaft. The control ring has an elliptical shape and is fixed onto a operating lever which, pivoted on a minor axis of an ellipse and retained in its rest position by a V-shaped spring, is made to rock to one side or the other about the axis of symmetry of the spring by a pusher rod. The pusher arm is operated by a cam mechanism and moved by a needle selector controlled by a programmer, to act on one of two valleys provided in a rocking sector on an operating lever symmetrically about an axis of symmetry.
    Type: Grant
    Filed: July 3, 1991
    Date of Patent: May 11, 1993
    Assignee: Nuovopignone-Industrie Meccaniche e Fonderia S.p.A.
    Inventor: Costantino Vinciguerra