Patents Assigned to E
  • Production of acid anhydrides and acid chlorides
    Patent number: 6429334
    Abstract: A process that can be used to produce an acid anhydride or acid chloride is provided. The process comprises contacting a reaction medium with a catalyst. The reaction medium comprises at least one organic acid, combination of the organic acid and phosgene, combination of at least one organic anhydride and phosgene, or combinations of the organic acid, the organic anhydride, and phosgene. The reaction medium can further comprise a solvent. The catalyst is a Group IVB transition metal halide.
    Type: Grant
    Filed: June 7, 2000
    Date of Patent: August 6, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Gordon L. Thayer, Jr.
  • Silicon reactive oligomers and coating compositions made therefrom
    Patent number: 6428898
    Abstract: The present invention is directed to low VOC curable coating compositions suitable for use in various mar and etch resistant coatings, such as in automotive coatings. The binder of the composition includes silicon/hydroxyl and cross-linking components. The silicon/hydroxyl component includes one or more reactive oligomers having linear or branched cycloaliphatic moiety and at least two functional groups with at least one being a silane or silicate group, the remaining being a hydroxyl group. Applicants have unexpectedly discovered that by including silane or silicate functionalities in these reactive oligomers, the solids level of the composition can be significantly increased at reduced composition viscosities. As a result, such high solids low VOC compositions can be readily applied by conventional application means, such as by spraying.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: August 6, 2002
    Assignee: E. I. du Pont de Nemours & Company
    Inventors: Robert J. Barsotti, Isidor Hazan, John David Nordstrom
  • Wire coating compositions
    Patent number: 6429237
    Abstract: A process for high speed melt extrusion onto wire conductors of fluoropolymer pigmented with oxide-coated titanium dioxide.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: August 6, 2002
    Assignee: E. I. du Pont de Nemours & Company
    Inventor: Patricia A. Tooley
  • Sanitary napkin
    Patent number: 6428523
    Abstract: A sanitary napkin provided with wings, and particularly a women's sanitary napkin. There is disclosed a sanitary napkin provided with wings that are adapted to be folded over the edges of an undergarment and tension relief structures which are located on a garment faceable surface of the wings. The tension relief structures have first surface affixed to a garment faceable surface of the wing and a second surface that is adapted to contact the undergarment in use. The second surface is movable with respect to the first surface and the second surface has an adhesive region that releasably adheres the tension relief structure to the user's undergarment.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: August 6, 2002
    Assignee: Johnson & Johnson Industria E Comercio LTDA
    Inventor: Igor Philip Passos Proglhof
  • Catalyst for the decomposition of nitrous oxide
    Patent number: 6429168
    Abstract: This invention relates to a process for the conversion of nitrous oxide to nitrogen and oxygen using a supported catalyst comprising iron and, optionally, certain other metals and to a novel catalyst composition.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: August 6, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Paul Douglas Vernooy
  • Process for recycling of powder coating waste
    Patent number: 6428843
    Abstract: A process for the recycling of polymeric powder coating waste involves the steps of contacting polymeric powder coating chips with the powder coating waste to form a combination, by applying the powder coating waste to at least a portion of the surface of the powder coating chips, followed by heating the combination to a temperature and for a period of time sufficient to firmly bond the powder coating waste to the powder coating chips.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: August 6, 2002
    Assignee: E. I. du Pont de Nemours & Company
    Inventors: Rene Graewe, Armin Rettig
  • Polymerization of fluoromonomers
    Patent number: 6429258
    Abstract: Aqueous dispersion polymerization of fluoromonomers is improved by using a combination of fluorosurfactants, one of which is a perfluoropolyether carboxylic acid or salt.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: August 6, 2002
    Assignee: E. I. du Pont de Nemours & Company
    Inventors: Richard Alan Morgan, Clay Woodward Jones, Theodore Arthur Treat, Jeffrey A. Hrivnak
  • Waveguide coupler
    Patent number: 6430341
    Abstract: A waveguide coupler comprises at least a first waveguide coupled at a coupling region to a second waveguide such that at least a part of radiation propagating along the first waveguide is coupled into the second waveguide. The second waveguide comprises a diffraction grating disposed at the coupling region to inhibit coupling of radiation from the first waveguide into the second waveguide at wavelengths characteristic of the diffraction grating.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: August 6, 2002
    Assignee: Pirelli Cavi e Sistemi S.p.A.
    Inventors: Philip St. John Russell, Jean-Luc Archambault
  • Process for the production of calcium fluoride
    Patent number: 6428764
    Abstract: A process is disclosed for producing calcium fluoride. The process comprises (a) mixing phosphate rock with aqueous H2SiF6 at ambient temperature for at least one hour; (b) nucleating the calcium fluoride in the slurry prepared in step (a) by reacting the slurry at a temperature and for a time sufficient to initiate and sustain nucleation of calcium fluoride and SiO2 by-product; (c) aggregating the SiO2 by-product by heating the slurry produced in step (b) at a temperature of about 90° C. to about 105° C. for at least 0.5 hours; and (d) recovering a calcium fluoride-containing product of an average particle size of less than 1 micron.
    Type: Grant
    Filed: May 5, 2000
    Date of Patent: August 6, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John Byrne Michel, Paul Douglas Vernooy
  • Corn pullulanase
    Patent number: 6429358
    Abstract: This invention relates to isolated nucleic acid fragments encoding all or a substantial portion of a corn pullulanase. The invention also relates to the construction of chimeric genes encoding all or a portion of a corn pullulanase, in sense or antisense orientation, wherein expression of the chimeric gene results in production of altered levels of corn pullulanase in a transformed host cell.
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: August 6, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Karen E. Broglie
  • Method for identifying the source of carbon in 1,3-propanediol
    Patent number: 6428767
    Abstract: A new polypropylene terephthalate composition is provided. The polypropylene terephthalate is comprised of 1,3-propanediol and terephthalate. The 1,3-propanediol is produced by the bioconversion of a fermentatble carbon source, preferable glucose. The resulting polypropylene terephthalate is distinguished from petrochemically produced polymer on the basis of dual carbon-isotopic fingerprinting which indicates both the source and the age of the carbon.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: August 6, 2002
    Assignees: E. I. du Pont de Nemours and Company, Genencor International, Inc.
    Inventors: Robert R. Burch, Robert R. Dorsch, Lisa Anne Laffend, Vasantha Nagarajan, Charles Nakamura
  • Genes encoding denitrification enzymes
    Patent number: 6429003
    Abstract: This invention relates to the isolation of nucleic acid fragments from Pseudomonas sp. strain G-179 that encode periplasmic nitrate reductase and nitric oxide reductase enzymes. The enzymes are useful in denitrification reactions and for the identification of other denitrifying bacteria. In addition, this invention also relates to the construction of chimeric genes encoding all or a substantial portion of a bacterial nitric oxide reductase or a bacterial periplasmic nitrate reductase enzymes, in sense or antisense orientation, wherein the expression of the chimeric genes results in production of altered levels of the nitric oxide reductase or periplasmic nitrate reductase in a transformed host cell.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: August 6, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Laura Anne Bedzyk, Rick Weizhang Ye
  • One step process for producing dicarboxylic acids
    Patent number: 6426432
    Abstract: A process for making an alkanedioic acid in which a mixture of a cycloalkene, a base and a solvent is contacted simultaneously with both oxygen and ozone at a temperature between 40 and 60 degrees Centigrade.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: July 30, 2002
    Assignee: E. I. DuPont de Nemours & Company
    Inventor: Chester Arthur Thayer, II
  • Poly (trimethylene terephthalate) polymer composition
    Patent number: 6426398
    Abstract: A poly(trimethylene terephthalate) polymer composition (a) comprising repeat units derived from terephthalic acid and 1,3- propanediol, (b) having a b value of less than about 10, and (c) having an intrinsic viscosity (IV) in the range from about 0.74 to about 2.0. The poly(trimethylene terephthalate) polymer composition does not contain a blue masking pigment. It is prepared by a process comnprising contacting, in the presence of a catalyst comprises tin and titanium. A copolymer that contains up to 20 mole percent of another acid and/or a second alcohol is also disclosed. Further disclosed is a composition of, or comprising, a bis (3-hydroxypropyl) terephthalalte prepolymer. The bis (3-hydroxypropyl) terephthalalte prepolymer and poly(trimethylene terephthalalte) can each contain 10 to 100 ppm tin and 10 to 200 ppm titanium relative to the terephthalic acid content.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: July 30, 2002
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: Joseph V Kurian, Yuanfeng Liang, Donald Edward Putzig
  • Apparatus for making composite sheet
    Patent number: 6425430
    Abstract: A process and an apparatus for high speed manufacture of a composite sheet material, which includes a cylindrical cam-driven strand-traverse guide that can loop strands around pins projecting from a pair of advancing pin conveyors which can transfer the strands to the surface of a moving sheet, are provided. When the strands are elastic, the elastic composite sheet material made by this process and apparatus are useful in elastic components of disposable diapers, adult incontinence articles and other garments.
    Type: Grant
    Filed: July 5, 2000
    Date of Patent: July 30, 2002
    Assignee: E. I. du Pont de Nemours & Company
    Inventors: Robert Roch Ward, Joshua Benin, Cathy Jane Hamilton, Leslie C. Talo
  • Oligomeric epoxy/isocyanate systems
    Patent number: 6426148
    Abstract: A curable coating composition comprising, in an organic solvent, a binder of (i) a non-isocyanate oligomer or blend of oligomers containing at least two functional groups with at least one being an epoxy group, the remaining being epoxy or hydroxyl; (ii) optionally a polyester, oligoester, or acrylic polymer with at least two hydroxyl groups; and (iii) an oligomeric crosslinker or blend of crosslinkers which contain at least two isocyanate groups.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: July 30, 2002
    Assignee: E. I. du Pont de Nemours & Company
    Inventors: Robert John Barsotti, Lee R. Harper, John David Nordstrom
  • Method for forming a cylindrical photosensitive element
    Patent number: 6425327
    Abstract: A method for forming a seamless cylindrical photosensitive element on a flexible cylindrical sleeve wherein the flexible sleeve is mounted onto a sleeve support to isolate the flexible sleeve from high temperature and/or high pressure associated with forming a cylindrical photosensitive layer on the flexible sleeve.
    Type: Grant
    Filed: August 12, 1999
    Date of Patent: July 30, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Roxy Ni Fan, William John Hommes
  • Single-wall carbon nanotube-polymer composites
    Patent number: 6426134
    Abstract: This invention relates to single-wall carbon nanotube/polymer composites, a process for the production of such, and their use as fibers, films and articles.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: July 30, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John Gerard Lavin, Harry Vaughn Samuelson
  • Gene combinations that alter the quality and functionality of soybean oil
    Patent number: 6426448
    Abstract: Novel gene combinations resulting in novel lipid profiles of soybean seeds and oil extracted from such seeds are disclosed. Methods for making such combinations are also described. In addition, the oils of this invention are disclosed to be useful in the manufacture of margarine and spread products.
    Type: Grant
    Filed: May 3, 1999
    Date of Patent: July 30, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John Russell Booth, Jr., Richard Martin Broglie, William Dean Hitz, Anthony John Kinney, Susan Knowlton, Scott Anthony Sebastian
  • Geographic adaptor electric plug
    Patent number: D461165
    Type: Grant
    Filed: April 13, 2001
    Date of Patent: August 6, 2002
    Assignee: E & B Giftware LLC
    Inventor: David W. Eyman