Patents Assigned to E.I. Du Pont
  • Fiber charging apparatus
    Patent number: 7465159
    Abstract: A fiber spinning apparatus for charging a polymer-containing liquid stream, having at least one electrically charged, point-electrode positioned adjacent the intended path of said liquid stream and creating an ion flow by corona discharge to impart electrical charge to the polymer-containing liquid stream.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: December 16, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Jack Eugene Armantrout, Benjamin Scott Johnson, Colby Abraham Rude, Michael Allen Bryner
  • Production of ?-linolenic acid in oleaginous yeast
    Patent number: 7465564
    Abstract: The present invention relates to methods for the production of ?-linolenic acid (GLA) in oleaginous yeast. Thus, ?12 and ?6 desaturases able to catalyze the conversion of oleic acid to GLA have been introduced into the genome of Yarrowia, using zeta-directed integration. Transformed strains produced over 25% GLA in the total lipids, as opposed to wildtype Yarrowia that is unable to synthesize any GLA. Metabolic engineering and fermentation methods are provided to further enhance GLA productivity in oleaginous yeast.
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: December 16, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Quinn Qun Zhu, Dana M. Walters Pollak
  • Compositions and methods for altering the disulfide status of proteins
    Patent number: 7465852
    Abstract: Compositions and methods for the alteration of the disulfide status of plant proteins are provided. Novel nucleotide molecules, comprising nucleotide sequences for thioredoxin h and NADPH-thioredoxin reductase, and the proteins encoded thereby are provided. The nucleotide sequences can be used to transform plants alone or in combination with other sequences, such as sequences encoding NADPH generating enzymes, to manipulate the thioredoxin h system and alter the protein disulfide status in plants. Transformed plants, plant cells, plant tissues, seed and grain are provided.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: December 16, 2008
    Assignees: Pioneer Hi-Bred International, Inc., E.I. du Pont de Nemours and Company
    Inventors: Vincent Sewalt, Craig Hastings, Robert Meeley, Sabine Susanne Hantke, Rudolf Jung, John D. Everard, Stephen M. Allen
  • Method of discovering patterns in symbol sequences
    Patent number: 7467047
    Abstract: A method of discovering one or more patterns in two sequences of symbols S1 and S2 includes the formation, for each sequence, of a master offset table that groups for each symbol the position in the sequence occupied by each occurrence of that symbol. The difference in position between each occurrence of a symbol in one of the sequences and each occurrence of that same symbol in the other sequence is determined and a Pattern Map is formed. For each given value of a difference in position the Pattern Map lists the position in the first sequence of each symbol therein that appears in the second sequence at that difference in position. The collection of the symbols tabulated for each value of difference in position thereby defines a parent pattern in the first sequence that is repeated in the second sequence.
    Type: Grant
    Filed: May 9, 2001
    Date of Patent: December 16, 2008
    Assignee: E.I. Du Pont de Nemours & Company
    Inventors: Akhileswar Ganesh Vaidyanathan, David Reuben Argentar, Karen Marie Bloch, Herbert Alan Holyst, Allan Robert Moser, Wade Thomas Rogers
  • POLY(HYDROXYALKANOIC ACID) AND ARTICLES THEREWITH
    Publication number: 20080306185
    Abstract: Disclosed is a composition comprising poly(hydroxyalkanoic acid) and one or more carboxylic acids having about 10 to about 30 carbon atoms wherein the carboxylic acid is present in the composition from 0.5 to about 15%, based on the weight of the composition and the carboxylic acid includes aromatic carboxylic acid, aliphatic carboxylic acid, polycarboxylic acid, aliphatic hydroxycarboxylic acid; or combinations of two or more thereof. Also disclosed are a process that can be used for producing the composition and an article comprising the composition.
    Type: Application
    Filed: June 10, 2008
    Publication date: December 11, 2008
    Applicant: E. I. du Pont de Nemours and Company
    Inventor: JULIUS URADNISHECK
  • USE OF CONDUCTOR COMPOSITIONS IN ELECTRONIC CIRCUITS
    Publication number: 20080305249
    Abstract: Use of a composition comprising finely divided particles of (a) an electrically-conductive material; (b) one or more inorganic binders; and (c) zinc, wherein components (a), (b) and (c) are dispersed in a liquid vehicle, in the manufacture of an electrically-conductive pattern on a substrate for the purpose of increasing the resistivity of said electrically-conductive pattern.
    Type: Application
    Filed: August 13, 2008
    Publication date: December 11, 2008
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: SARAH JANE MEARS
  • PROCESS FOR ELIMINATING BACTERIAL SPORES ON SURFACES AND SPORICIDE FOR USE IN THE PROCESS
    Publication number: 20080305183
    Abstract: A process for eliminating bacterial spores on surfaces by contacting the surfaces with an aqueous composition comprising 3 to 30 wt. % of hydrogen peroxide and having a pH value of 6 to 8 for a period of 1 to 60 minutes at a temperature of 0 to 35° C., wherein the process does not comprise any germination step.
    Type: Application
    Filed: June 6, 2008
    Publication date: December 11, 2008
    Applicant: E. I. du Pont de Nemours and Company
    Inventors: Vincent Brian Croud, Philip James Weaver, Mark Wallace Squire, Kelly Ann Ames
  • Transparent Colored High Modulus Interlayers and Laminates Therefrom
    Publication number: 20080302461
    Abstract: A process for preparing a transparent laminate comprising a colored interlayer and a rigid sheet, comprising: (a) forming a color concentrate comprising a thermoplastic ionomer copolymer and about 1 to about 10 wt % (based on the total weight of the color concentrate) of pigment by: (i) combining (a) one or more colored master batch, each comprising about 50 to about 80 wt % (based upon the weight of the master batch) a thermoplastic matrix polymer and about 20 to about 50 wt % (based on the weight of the master batch) of pigment, and (b) one or more thermoplastic ionomer copolymer; and (ii) melt mixing the one or more colored master batch and the one or more thermoplastic ionomer copolymer at a temperature above the melting points of the thermoplastic ionomer copolymer and the thermoplastic matrix polymer; (b) forming an interlayer composition comprising thermoplastic ionomer copolymer and about 0.
    Type: Application
    Filed: June 8, 2007
    Publication date: December 11, 2008
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Richard Allen Hayes, Thomas R. Phillips, Sam Louis Samuels, Rebecca L. Smith
  • METHOD AND APPARATUS FOR LASER WELDING THERMOPLASTIC RESIN MEMBERS
    Publication number: 20080302484
    Abstract: A method and apparatus for welding members formed of thermoplastic resin material, with high welding strength and small strength variations. A laser welding apparatus 1 brings a first member 2 formed of a transmissive thermoplastic resin that transmits a laser beam into contact with a second member 3 formed of an absorptive thermoplastic resin that absorbs the laser beam, and joins the thermoplastic resin members by melting their contact surfaces 4 with the laser beam. The laser welding apparatus 1 further comprises a laser beam generator 10 for irradiating the contact surfaces with the laser beam shone from the side of the first member 3 so as to melt at least one of the contact surfaces of the first member and the second member.
    Type: Application
    Filed: August 12, 2008
    Publication date: December 11, 2008
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Toshio WATANABE, Katsuhiko NAKAJIMA, Hideo NAKAMURA, Hiroshi MORI, Susumu FUJITA, Mitsunobu NAKATANI
  • Method of preparation for the high performance thermoelectric material indium-cobalt-antimony
    Patent number: 7462217
    Abstract: The present invention relates to a process for the preparation of thermoelectric compositions of the formula InxCO4Sb12 (0<x<1), with a figure of merit greater than 1.0 and a composition made by that process.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: December 9, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Tao He, James J. Krajewski, Munirpallam Appadorai Subramanian
  • Conductive compositions used in the manufacture of semiconductor device
    Patent number: 7462304
    Abstract: The present invention is directed to a thick film conductive composition comprising: (a) electrically conductive silver powder; (b) Mn-containing additive; (c) glass frit wherein said glass frit has a softening point in the range of 300 to 600° C.; dispersed in (d) organic medium. The present invention is further directed to a semiconductor device and a method of manufacturing a semiconductor device from a structural element composed of a semiconductor having a p-n junction and an insulating film formed on a main surface of the semiconductor comprising the steps of (a) applying onto said insulating film the thick film composition as describe above; and (b) firing said semiconductor, insulating film and thick film composition to form an electrode.
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: December 9, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Yueli Wang, Alan Frederick Carroll, Kenneth Warren Hang, Richard John Sheffield Young
  • Water dispersible polyanilines made with polymeric acid colloids for electronics applications
    Patent number: 7462298
    Abstract: Compositions are provided comprising aqueous dispersions of polyaniline and colloid-forming polymeric acids. Films from invention compositions are useful as buffer layers, in organic electronic devices including electroluminescent devices, such as organic light emitting diodes (OLED) displays. Films cast from invention compositions are also useful in combination with metal metalwires or carbon nanotubes in applications such as drain, source, or gate electrodes in thin film field effect transistors.
    Type: Grant
    Filed: September 24, 2003
    Date of Patent: December 9, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Che-Hsiung Hsu, Frank P. Uckert
  • Fluoropolymer release coating having improved heat transfer properties and abrasion resistance
    Patent number: 7462387
    Abstract: The invention relates to a structure comprising a substrate and a baked release coating on the substrate, the coating comprising an undercoat and a fluoropolymer overcoat, wherein said undercoat contains magnetizable flakes and a plurality of silicon carbide particles. The coated substrates of the invention have improved heat transfer properties, improved abrasion resistance and good release.
    Type: Grant
    Filed: May 15, 2006
    Date of Patent: December 9, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Michael J. Witsch
  • Glyphosate N-acetyltransferase (GAT) genes
    Patent number: 7462481
    Abstract: Novel proteins are provided herein, including proteins capable of catalyzing the acetylation of glyphosate and other structurally related proteins. Also provided are novel polynucleotides capable of encoding these proteins, compositions that include one or more of these novel proteins and/or polynucleotides, recombinant cells and transgenic plants comprising these novel compounds, diversification methods involving the novel compounds, and methods of using the compounds. Some of the novel methods and compounds provided herein can be used to render an organism, such as a plant, resistant to glyphosate.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: December 9, 2008
    Assignees: Verdia, Inc., Pioneer Hi-Bred Int'l., Inc., E.I. du Pont de Nemours
    Inventors: Linda A. Castle, Dan Siehl, Lorraine Giver, Jeremy Minshull, Christina Ivy, Yong Hong Chen, Phillip A. Patten, Rebecca Gorton, Nicholas B. Duck, Billy Fred McCutchen, Roger Kemble
  • Polyvinylbutyral interlayer sheet with improved adhesion to glass and a process for preparing same
    Patent number: 7462664
    Abstract: The present invention is an improved PVB composition comprising an adhesion control agent which is a mixture of potassium and magnesium salts in a ratio of from about 0.05:1 to about 5:1, by weight, potassium salts to magnesium salts. The present invention also describes a method for improved control of adhesion of PVB to glass.
    Type: Grant
    Filed: July 29, 2003
    Date of Patent: December 9, 2008
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Rebecca L. Smith, Donald L. Rymer, Robert M. Harper, Dan J. McKiernan
  • Ibuprofen complexes as wood preservatives
    Patent number: 7462227
    Abstract: Complexes of ibuprofen and copper and/or zinc were solubilized in ammoniacal solution providing preservative solutions that fully penetrate wood. With loss of the ammonia from the wood, the complexes were stably retained in the wood providing a long lasting preservative.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: December 9, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Albert Gordon Anderson, John Feaster, Damini Patel, Mark Scialdone
  • Computer-implemented system and method for analyzing mixtures of gases
    Patent number: 7460958
    Abstract: A computer-implemented system and method for converting the resistances of an array of metal oxide sensors into constituents and concentrations of a multi-component gas provided around the sensor array. The method includes preprocessing the resistances of the sensor array; selecting a model that calculates the constituents and concentrations of the multi-component gas based on the preprocessed resistances; and post-processing the constituents and concentrations of the multi-component gas generated by the selected model to provide the actual constituents and concentrations of the multi-component gas.
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: December 2, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Alicia Marie Walsh, Kenneth S. Dahl, Charles E. Miller, Patricia A. Morris, Michael Joseph Piovoso
  • Carbon fiber composite transfer member with reflective surfaces
    Patent number: 7459215
    Abstract: A method of transporting precision equipment materials without absorption of thermal energy through the heat sensitive material or device such as flat panel displays. The transfer member has a carbon fiber reinforced composite material body with a layer of metal film on the top and bottom surfaces of the transfer member that provides a reflective surface. Flat panel displays, for example, release radiant thermal energy that is absorbed by the carbon fiber reinforced composite which is detrimental to the flat panel display. The reflective surface created by the metal film prevents the energy absorption by the carbon fiber reinforced composite. A glass fiber and epoxy layer on the metal film surface protects the metal film.
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: December 2, 2008
    Assignees: E.I. du Pont de Nemours and Company, Nippon Oil Corporation
    Inventors: Chris L. Miller, Daisuke Uchida, Takashi Kobayashi, Kenichi Aoyagi, Shinichi Takemura
  • Sheet material especially useful for circuit boards
    Patent number: 7459044
    Abstract: A sheet comprising thermoplastic polymer (TP) and short high tensile modulus fibers, in which the concentration of TP in the middle of the sheet is higher than at the surface of the sheet, useful for making prepregs with a thermoset resin.
    Type: Grant
    Filed: February 3, 2005
    Date of Patent: December 2, 2008
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Subhotosh Khan, Michael Robert Samuels, Mikhail R. Levit
  • Glyceraldehyde-3-phosphate dehydrogenase and phosphoglycerate mutase regulatory sequences for gene expression in oleaginous yeast
    Patent number: 7459546
    Abstract: The regulatory sequences associated with the Yarrowia lipolytica glyceraldehyde-3-phosphate dehydrogenase (gpd) and phosphoglycerate mutase (gpm) genes have been found to be particularly effective for the expression of heterologous genes in oleaginous yeast. The promoter regions of the invention, intron and enhancer have been shown to drive high-level expression of genes involved in the production of ?-3 and ?-6 fatty acids.
    Type: Grant
    Filed: July 18, 2005
    Date of Patent: December 2, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Stephen K. Picataggio, Quinn Qun Zhu