Patents Assigned to E
  • Patent number: 5731404
    Abstract: A polyimide alignment film based on pyromellitic dianhydride and a bis(4-aminophenoxy) aromatic compound, such as 1,3-bis(4-aminophenoxy)benzene or 1,4-bis(4-aminophenoxy)benzene, providing low tilt angles of from to 2 degrees when used in liquid crystal displays.
    Type: Grant
    Filed: November 1, 1995
    Date of Patent: March 24, 1998
    Assignees: E. I. du Pont de Nemours and Company, Merck Patent GmbH
    Inventors: Brian Carl Auman, Edgar Bohm
  • Patent number: 5731158
    Abstract: The present invention concerns a method to catalyze reporter deposition to improve detection or quantitation of an analyte in a sample by amplifying the detector signal which comprises reacting an analyte dependent enzyme activation system with a conjugate consisting of a detectably labeled substrate specific for the enzyme system, said conjugate reacts with the analyte dependent enzyme activation system to form an activated conjugate which deposits substantially wherever receptor for the activated conjugate is immobilized, said receptor not being reactive with the analyte dependent enzyme activation system.In another embodiment the invention concerns an assay for detecting or quantitating the presence or absence of an analyte in a sample using catalyzed reporter deposition to amplify the reporter signal.
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: March 24, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mark Norman Bobrow, Gerald Joseph Litt
  • Patent number: 5731069
    Abstract: A two-component, heat reactive patch particularly useful for sealing gage and drain holes in automobile bodies which comprises an ionomer component and an olefinic/elastomeric component. The ionomer component contains an ionomeric copolymer of ethylene and an .alpha.,.beta.-ethylenically-unsaturated C.sub.3 -C.sub.8 carboxylic acid, a metallic coagent and a filler and, optionally, a non-ionomeric copolymer of ethylene. The olefinic/elastomeric component contains an uncrosslinked elastomer, a multifunctional acrylic monomer, and a free-radical curing agent.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: March 24, 1998
    Assignees: E. I. du Pont de Nemours and Company, Sika Corporation
    Inventors: Ralph Delle Donne, Elizabeth Alexander Schowe, John Lynch Hanley, IV, Rohit Kumar Shah
  • Patent number: 5731088
    Abstract: A multilayer polyimide-fluoropolymer insulation structure containing (a) a layer of a polyimide-fluoropolymer composite composed of a polyimide copolymer base layer, fluorinated ethylene-propylene (FEP) copolymer layers bonded to both sides of the polyimide copolymer base layer and a FEP-polytetrafluoroethylene (PTFE) blend layer bonded to at least one of the FEP layers and (b) an overlying layer of unsintered PTFE. The insulation structure has superior cut-through resistance when used in aerospace wire and cable applications.
    Type: Grant
    Filed: June 4, 1996
    Date of Patent: March 24, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Philip R. La Court
  • Patent number: 5731403
    Abstract: This invention concerns a low temperature process for the manufacture of nylon.
    Type: Grant
    Filed: July 30, 1996
    Date of Patent: March 24, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: James Joseph Lang
  • Patent number: 5730548
    Abstract: Deadening pavement for roads, comprising: an upper layer (10), formed by a wearing course of asphalt having an average granulometry, and a lower layer (12) supporting the wearing course (10), and which is made of cement, concrete, or similar materials, wherein in the lower layer (12) there is obtained a plurality of cavities (18), facing directly the upper layer (10),which act as Helmholtz resonators.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: March 24, 1998
    Assignees: Autostrade-Concessioni E Costruzioni Autostrade S.p.A., IPSE s.r.l.
    Inventors: Giovanni Battista Brero, Antonio Ostino, Germano Dealessandri
  • Patent number: 5731602
    Abstract: The present invention provides for an improved package for a laser diode. The package has portions of its inner surfaces covered with a non-reflecting material, such as simple black paint, non-reflective metals or specific anti-reflection coatings. Such non-reflecting materials surprisingly enhances the performance of packaged laser diodes used as pumping lasers for fiber amplifiers, for example.
    Type: Grant
    Filed: January 18, 1996
    Date of Patent: March 24, 1998
    Assignee: E-Tek Dynamics, Inc.
    Inventors: Jing-Jong Pan, Paul Shi-Qi Jiang, Jian Chen, Li-Hua Wang
  • Patent number: 5730894
    Abstract: Compositions of 1,1,2,2,3,3,4,4-octafluorobutane and a compound of the formula selected from the group consisting of a 4-6 carbon linear or a cyclic hydrofluorocarbon or fluorocarbon, a 3-5 carbon fluoroether, a fluorinated alcohol, perfluoro-n-methylmorpholine; and an ether are disclosed.These compositions, which may be azeotropic or azeotrope-like, may be used as refrigerants, in small turbine high speed compressors. They may also be used as refrigerants, cleaning agents, expansion agents for polyolefins and polyurethanes, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, displacement drying agents or as an anesthetic.
    Type: Grant
    Filed: April 16, 1996
    Date of Patent: March 24, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Barbara Haviland Minor
  • Patent number: 5731163
    Abstract: A reagent, useful in the detection of environmental insults comprising bacterial cells containing a stress promoter operably linked to a lux gene complex has been prepared by lyophilizing the cells in a specified medium. The reagent may be used immediately upon rehydration where a positive test for the presence of an environmental insult is given by an increase in light production from the cells.
    Type: Grant
    Filed: November 22, 1996
    Date of Patent: March 24, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Tina Kangas Vandyk, Lorraine Winona Wagner
  • Patent number: 5728556
    Abstract: Applicants have provided methods for obtaining aliphatic omega-cyanocaboximides of Formula INC--CH(R.sub.1)(CH).sub.n CH(R.sub.2)C(O)NH.sub.2whereinn=1-8 and R.sub.1 or R.sub.2 are either H or CH.sub.3,from dinitriles of Formula IINC--CH(R.sub.1)(CH).sub.n CH(R.sub.2)CNwhereinn=1-8 and R.sub.1 or R.sub.2 are either H or CH.sub.3,using biocatalysts which have regioselective nitrile hydratase activity and which are derived from members of the bacterial species Pseudomonas putida.
    Type: Grant
    Filed: March 14, 1996
    Date of Patent: March 17, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, Barry Stieglitz, Robert D. Fallon
  • Patent number: 5728693
    Abstract: Arthropodicidal compounds, compositions and use of compounds having the formula ##STR1##
    Type: Grant
    Filed: June 25, 1996
    Date of Patent: March 17, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Thomas Martin Stevenson
  • Patent number: 5727876
    Abstract: A mixing apparatus suitable for mixing and conveying solid, particulate, polymeric materials, comprising a barrel that can be heated and cooled, at least two co-rotatable, self-wiping extruder screws located within the bore of the barrel, the screws being connected through a laterally flexible coupling to a dirve means which can reverse the direction of rotation of the screws upon the occurrence of a predetermined event. The apparatus also comprises a closeable feed port and a closeable discharge port, both of which can be made gas-tight, the shafts of the screws being provided with seals capable of withstanding elevated gas pressures inside the barrel.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: March 17, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Daniel Gregory Tynan
  • Patent number: 5727477
    Abstract: This disclosure is directed to the use of rigid and semi-rigid materials to form a decorative covering device for standard folding banquet and convention tables. Through the use of a hinging mechanism on the front, rear and sides, this provides a device which can be folded up into an inside-out, flat configuration that can be easily transported and stored with minimal wear damage to its finished surfaces. The normally vertical front, rear and side sections of this device fold independently of one another into three different positions. Front, rear and side sections are a sandwich composition of plastic laminate and foam; the top section is a hardwood framework covered with a sandwich composition of plastic laminate and plywood. The first position of the sections is the operational position where the front, rear, and two side sections are deployed in a vertical position, hanging down from the top section, which rests upon the folding table.
    Type: Grant
    Filed: September 28, 1995
    Date of Patent: March 17, 1998
    Assignee: E-Z Topper, Inc.
    Inventor: Timothy L. Kirkendall
  • Patent number: 5728205
    Abstract: The present invention provides a process for producing titanium dioxide (TiO.sub.2) pigment comprising boron oxide (B.sub.2 O.sub.3), comprising the steps of: (a) reacting titanium tetrachloride (TiCl.sub.4) in the vapor phase with an aluminum compound and an oxygen-containing gas in a reactor at a temperature in the range of about 900.degree. C. to about 1600.degree. C. to provide a gaseous suspension comprising TiO.sub.2 particles, and (b) contacting the gaseous suspension comprising the TiO.sub.2 particles with a boron compound to produce TiO.sub.2 pigment comprising B.sub.2 O.sub.3.
    Type: Grant
    Filed: December 11, 1996
    Date of Patent: March 17, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Alvin Allen, John Steven Gergely
  • Patent number: 5728639
    Abstract: A process is disclosed for converting a spent catalyst from conventional fluorination processes into a commercially useful tantalum or niobium oxide such as Ta(OH)5, Ta2O5, Nb(OH)5, or Nb2O5. The process broadly relates to dissolving the spent catalyst into water or an aqueous hydrofluoric acid solution, separating and disposing the undissolved residue, extracting the aqueous solution with a suitable solvent such as methyl isobutyl ketone (MIBK), and obtaining useful tantalum or niobium oxide products.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: March 17, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Vinci Martinez Felix
  • Patent number: 5728651
    Abstract: Compounds of Formula I having herbicidal utility are disclosed ##STR1## wherein the left-hand ring contains only single bonds or one bond in the ring is a double bond, and R.sup.1, R.sup.2, Q and n are defined in the text, including compositions containing such compounds and a method for controlling weeds employing such compounds.
    Type: Grant
    Filed: September 26, 1995
    Date of Patent: March 17, 1998
    Assignees: E. I. du Pont de Nemours and Company, Degussa Aktiengesellschaft
    Inventors: Wonpyo Hong, Karlheinz Drauz, Matthias Schafer, William Thomas Zimmerman
  • Patent number: 5729191
    Abstract: A vehicle security system includes a controller for performing a function responsive to receipt of a corresponding command signal, and a remote transmitter for sending a command signal from a plurality of banks of command signals. More particularly, the remote transmitter includes a plurality of first momentary contact switches for transmitting a first respective command signal responsive to depressing the switch for less than a first time and for transmitting a second respective command signal responsive to depressing the switch for more than the first time. The remote transmitter also includes a bank selector switch for selecting one of the plurality of banks of command signals. A valet switch is included for placing the controller in a valet mode, such as to permit a service technician or valet to use the vehicle without triggering an alarm.
    Type: Grant
    Filed: April 14, 1995
    Date of Patent: March 17, 1998
    Assignee: Kenneth E. Flick
    Inventors: Geoffrey C. Allen, Kenneth E. Flick
  • Patent number: 5728340
    Abstract: Certain polyester-based polyurethaneureas in solutions of organic solvent at a 12 to 20% concentration are particularly suited for use in a mandrel-dipping process for producing thin-walled elastic articles, such as surgical gloves, which are more resistant to puncture and tear than conventional surgical gloves made from rubber latex.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: March 17, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Richard Lewis Dreibelbis, Nathan Eli Houser, Jacob Lahijani
  • Patent number: 5728505
    Abstract: Aqueous processable, photopolymerized coating compositions are disclosed, which after curing, have superior flexibility for use as permanent coatings for the protection of printed circuitry.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: March 17, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Thomas Eugene Dueber, Frank Leonard Schadt, III
  • Patent number: 5728258
    Abstract: An apparatus for applying non-gravitational pressure to a surface includes a frame structure having a longitudinal axis, a pair of connecting members coupled to the frame structure along parallel axes normal to the longitudinal axis of the frame structure, vacuum fasteners coupled to the connecting members to secure the frame structure on an underlying surface, a vacuum pump mounted on the frame structure for activating the vacuum fasteners and a positive pressure pump mounted on the frame structure for inflating a collapsible diaphragm to apply pressure to the underlying surface. The apparatus is useful for applying doublers to aircraft repair localized damage.
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: March 17, 1998
    Assignee: E-Systems, Inc.
    Inventor: Jaycee H. Chung