Patents Assigned to E
  • Driver alerting device
    Patent number: 5028920
    Abstract: A driver alerting device includes a transceiver adapted for mounting at the rearward end of a vehicle for directing its wave output rearwardly of the vehicle. Return wave signals for many objects within the transceiver range are picked up and supplied to the transceiver by an antenna. Any resultant doppler shift signal is amplified for driving an audio alarm adapted for placement within the passenger compartment of the vehicle. The circuit is adapted for electrical connection to the back-up light circuit of the vehicle for activation only when the vehicle transmission is engaged in reverse gear.
    Type: Grant
    Filed: July 16, 1990
    Date of Patent: July 2, 1991
    Assignees: Steven F. Sommers, Bruce E. Schreiner, Land Paving Company, Omni Holding Company, Jerry Ronk, Robert Wichser
    Inventor: Anthony E. Dombrowski
  • Optical articles for wavelength conversion and their manufacture and use
    Patent number: 5028107
    Abstract: Articles and process for wavelength conversion are disclosed which use a series of aligned sections of optical materials which are suitably balanced over the series with regard to the section length and the section .DELTA.k (i.e. the difference between the sum of the propagation constants for the incident waves and the sum of the propagation constants for the waves generated). The sections are selected such that the sum for the series of the product of the length of each section with the .DELTA.k is equal to about zero, and the length of each section is less than its coherence length. Embodiments are disclosed wherein at least one of the optical materials is optically nonlinear and/or wherein a layer of nonlinear optical material is provided adjacent to the series of sections.
    Type: Grant
    Filed: April 25, 1990
    Date of Patent: July 2, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John D. Bierlein, Daniel B. Laubacher
  • Novel macromonomer compositions
    Patent number: 5028677
    Abstract: Novel compositions of homopolymers and copolymers containing an olefinic polymerizable end group wherein the monomeric units comprise methacrylate, acrylate, acrylic acid, styrene, vinyl esters, acrylonitrile, methacrylonitrile, vinyl halides, vinylidene halides, substituted butadienes, ethylene-sulfonic acid derivatives, acrylamide derivatives, methacrylamide derivatives, and other monomers, and mixtures thereof are disclosed.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: July 2, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Andrew H. Janowicz
  • Radio receiver frequency control system
    Patent number: 5029237
    Abstract: Frequency control in a miniature receiver is effected by a synthesizer that is operated briefly to provide a tuning voltage to a voltage controlled local oscillator. A capacitor is shunted across the output of the synthesizer and is charged to the level of the tuning voltage. After the capacitor is charged, the synthesizer is deenergized and the diminishing voltage provided to the oscillator by the discharging capacitor is correspondingly supplemented by an AFC voltage that tracks drift of the received signal in the IF passband. The deenergizing of the synthesizer eliminates synthesizer noise and reduces the receiver's power consumption.
    Type: Grant
    Filed: August 1, 1989
    Date of Patent: July 2, 1991
    Assignee: AT&E Corporation
    Inventor: Lawrence H. Ragan
  • Process for preparing Tc-99m tris(isonitrile) copper complexes
    Patent number: 5028699
    Abstract: Tris(isonitrile)copper(I) complex salts with anions selected from BF.sub.4, PF.sub.6, ClO.sub.4, I, Br, Cl and CF.sub.3 COO are useful in preparing radionuclide complexes rapidly at room temperature. Preferred isonitrile ligands are ether isonitriles. The tris(isonitrile)copper(I) adducts enable technetium complexes, such as those of Tc99m, to be prepared easily just prior to their use as imaging agents.
    Type: Grant
    Filed: August 23, 1989
    Date of Patent: July 2, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Tahir Iqbal, John H. Cain, Jr., Jack J. Slosky
  • Discoloration-resistant spandex
    Patent number: 5028642
    Abstract: An improved spandex polymer composition provides fibers or films of the composition with increased heat set efficiency and greater discoloration resistance. The composition contains zinc oxide and a polyhydroxy additive selected from certain sugars, reduced sugars and/or polyhydroxy urethanes formed from these sugars or reduced sugars and an organic diisocyanate.
    Type: Grant
    Filed: February 9, 1990
    Date of Patent: July 2, 1991
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Charles W. Goodrich, William L. Evans
  • Methanol copolymerization of ethylene
    Patent number: 5028674
    Abstract: An improvement in the process for the continuous copolymerization of ethylene with certain polar comonomers having reactive double bonds, wherein a single phase is maintained in the reactor by means of methanol introduced concurrently with the reactants, whereby reactor fouling is significantly reduced or eliminated.
    Type: Grant
    Filed: June 6, 1990
    Date of Patent: July 2, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Paul B. Hatch, Donald R. Marshall
  • Method for producing para-aramid pulp
    Patent number: 5028372
    Abstract: A method for producing para-aramid pulp includes forming a liquid, actively-polymerizing solution and subjecting the solution to orienting flow which produces an optically anisotropic liquid solution with polymer chains oriented in the direction of the flow. When the solution has a viscosity sufficient to maintain the orientation of the polymer chains, the solution is incubated until it gels. The gel is cut transversely at intervals and para-aramid pulp is isolated from the gel. Para-aramid pulp produced by the process can be used similarly to pulp produced from spun fiber.
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: July 2, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Roland T. Brierre, Stephan C. De La Veaux, James E. Geary, Jr., Wesley Memeger, Jr., Michael L. Trancynger
  • Volumetric meter for liquids and/or gases
    Patent number: 5027654
    Abstract: A volumetric meter for liquids and/or gases, in the radial cavities of the rotor of which there are housed rolling rollers which, by undergoing mutual repulsion by the action of magnets embedded in them, are urged radially into a sealed state against the inner surface of the cylindrical chamber, which is provided in positions straddling said opposite maximum and minimum clearance zones with two portions having constant curvatures with their centre on the rotor axis and extending through an angle equal to the angular pitch between two successive rollers, i.e. to 360.degree. divided by the number of rollers used. Further inlet and outlet ports cooperating with the rear space in the housing cavities are also provided, as are fine adjustment means.
    Type: Grant
    Filed: October 18, 1989
    Date of Patent: July 2, 1991
    Assignee: Nuovopignone-Industrie Meccaniche e Fonderia S.p.A.
    Inventor: Giorgio Bergamini
  • Aromatic polyamide paper with thickened edge areas and process for making same
    Patent number: 5028300
    Abstract: Disclosed is an elongate, nonwoven flexible sheet structure and a method for its manufacture. The sheet structure consists essentially of a commingled mixture of about 45 to about 70% by weight short fibers of aromatic polyamide and about 30 to about 55% by weight fibrids of poly(meta-phenylene isophthalamide). The sheet structure has an interior thickness remote from the edges of between about 75 and about 150 microns with a thickened area along and adjacent each of the side edges having a maximum thickness which is at least about 5% greater in average thickness than the interior thickness of the sheet along and adjacent the thickened areas.
    Type: Grant
    Filed: July 13, 1990
    Date of Patent: July 2, 1991
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Peter J. Hollberg, Layton T. Hulette
  • Process for preparing a precolored image using photosensitive reproduction element containing a photorelease layer
    Patent number: 5028511
    Abstract: This invention relates to a peel-apart photosensitive element comprising a strippable coversheet, a photorelease layer, a photohardenable layer, an elastomeric layer, and a support, which is useful in a variety of image reproduction processes.
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: July 2, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John H. Choi
  • Ad insertion system and method for broadcasting spot messages out of recorded sequence
    Patent number: 5029014
    Abstract: An ad insertion system and method transmit spot messages during intervals in a broadcast transmission and provide immediate access to stored spot messages, in any sequential order, with a single video source. Custom spot messages can be created by superimposing graphics over selected video signals and simultaneously transmitting those signals with appropriate audio signals.
    Type: Grant
    Filed: October 26, 1989
    Date of Patent: July 2, 1991
    Assignee: James E. Lindstrom
    Inventor: James E. Lindstrom
  • Photohardenable electrostatic element with improved backtransfer characteristics
    Patent number: 5028503
    Abstract: Photohardenable electrostatic master with improved backtransfer characteristics comprising(1) an electrically conductive substrate, and(2) a layer of photohardenable composition consisting essentially of(a) at least one organic polymeric binder,(b) at least one compound having at least one ethylenically unsaturated group, and(c) a photoinitiator or photoinitiator system, and(d) an acidic additive as defined.A xeroprinting process is described using the master. The master is used in graphic arts, color proofing which duplicates images produced by printing, preparation of printed circuit boards, resists, soldermasks, etc.
    Type: Grant
    Filed: September 21, 1989
    Date of Patent: July 2, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Catherine T. Chang
  • Palladium catalyzed carboalkoxylation of butadiene
    Patent number: 5026901
    Abstract: A process for the preparation of linear alkyl pentenoates by reacting butadiene, carbon monoxide and an alkyl alcohol in an organic solvent with a homogeneous catalytic mixture containing five components namely, palladium, chloride, a strong acid, an aryl monodentate phosphine, and a N-heterocyclic base.
    Type: Grant
    Filed: March 29, 1990
    Date of Patent: June 25, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Michael B. D'Amore
  • Process for the preparation of dodecanedioic acid
    Patent number: 5026461
    Abstract: A process for the production of dodecanedioic acid by oxidation of cyclododecene using a two phase system in which ruthenium tetroxide serves as the oxidizing agent in the organic phase, and ruthenium tetroxide is regenerated in the second phase, an aqueous phase containing cerium ions in the plus 4 state. The cerium plus 4 ions may be regenerated by electrolytic oxidation in a separate step.
    Type: Grant
    Filed: January 19, 1990
    Date of Patent: June 25, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Darwin D. Davis, David L. Sullivan
  • Swinney's hair growth formula
    Patent number: 5026553
    Abstract: A composition for treating Male Pattern Baldness of human beings. It can also be effective for women with naturally occuring hair loss problems. The mixture consists of vegetable oil, a mixture of 10% water (H.sub.2 O) and 90% alcohol, and pure virgin olive oil. The composition in the form of a liquid mixture is applied to and massaged into the hair and/or scalp at least once in each twenty four hour period. Each application period should be for a maximum of eight to ten hours overnight. Also, the minimal period should be no less than fifteen minutes.
    Type: Grant
    Filed: April 20, 1990
    Date of Patent: June 25, 1991
    Assignee: Dale E. Swinney
    Inventor: Dale E. Swinney
  • Binary azeotropic compositions of 1,1,1,2,3,3-hexafluoro-3-methoxypropane with one of trans-1,2-dichloroethylene, cis-1,2-dichloroethylene, 1,1-dichloro-1,2-difluoroethane or 1,2-dichloro-1,1,-difluoroethane
    Patent number: 5026498
    Abstract: Azeotropic mixtures of 1,1,1,2,3,3-hexafluoro-3-methoxypropane with one of trans-1,2-dichloroethylene (t-HCC-1130), cis-1,2-dichloroethylene (c-HCC-1130), 1,1-dichloro-1,2-difluoroethane (HCFC-132c), or 1,2-dichloro-1,2-difluoroethane (HCFC-132), and the use of such azeotropic mixtures in solvent cleaning applications is disclosed.
    Type: Grant
    Filed: October 3, 1990
    Date of Patent: June 25, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Abid N. Merchant
  • Polyhalodihydrodioxins and polyhalodioxoles
    Patent number: 5026801
    Abstract: This invention is directed to halodihydrodioxins, their preparation and their polymers, which provide amorphous homopolymers that are resistant to ring opening side reactions. The resulting polymers can be used for films and thermally stable molded objects, coatings for substrates such as wood, glass, paper and metal and for protective packaging. This invention also concerns the preparation of polyhalogenated dioxoles.
    Type: Grant
    Filed: September 18, 1989
    Date of Patent: June 25, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Carl G. Krespan, Paul R. Resnick
  • Ternary azeotropic compositions of hexafluoropropylene/ethylene cyclic dimer with trans-1,2-dichloroethylene and methanol
    Patent number: 5026499
    Abstract: An azeotropic mixture of hexafluoropropylene/ethylene cyclic dimer (dimer) with trans-1,2-dichloroethylene and methanol is useful in solvent cleaning applications and as refrigerants, aerosol propellants and blowing agents.
    Type: Grant
    Filed: March 21, 1990
    Date of Patent: June 25, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Abid N. Merchant
  • Bulking agent for baked products
    Patent number: H937
    Abstract: A dry blend useful as a bulking agent in the replacement of carbohydrates and/or fats is provided. The dry blend is comprised of a mixture of a randomly-bonded polysaccharide and a cold-water-gelling granular starch having a cold-water solubility of at least about 50% by weight. Also provided are culinary premixes and method of formulating culinary premixes.
    Type: Grant
    Filed: September 18, 1989
    Date of Patent: July 2, 1991
    Assignee: A. E. Staley Manufacturing Company
    Inventor: Jane L. Sloan