Patents Assigned to E
  • Heterogeneous immunoassay
    Patent number: 4971904
    Abstract: An improved heterogeneous immunoassay is provided which includes the utilization of support materials capable of reversible immobilization of proteinaceous binding partners of biological material of interest and the removal of labeled complexes from these supports through the use of release reagents permitting the subsequent solution phase determination of the amount of label.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: November 20, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Michael A. G. Luddy
  • Surface heating food wrap with variable microwave transmission
    Patent number: 4972058
    Abstract: The present invention provides a composite material for generation of heat by absorption of microwave energy comprising a porous dielectric substrate and a coating comprising a thermoplastic dielectric matrix and flakes of a micorwave susceptive material distributed within the matrix, said flakes having an aspect ratio of at least about 10, a generally planar, plate-like shape, with a thickness of about 0.1 to about 1.0 micrometers, a transverse dimension of about 1 to about 50 micrometers, and angular edges. The composite material exhibits decreased microwave transmission as a function of previously applied pressure.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: November 20, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Kenneth A. Benson, Dan S. C. Fong
  • Polyacetal compositions containing a non-meltable polymer stabilizer improved with at least one amide-containing phenolic antioxidant
    Patent number: 4972014
    Abstract: Incorporation into polyacetal molding compositions stabilized with a non-meltable polymer stabilizer of 0.02-1.0 weight percent of at least one amide-containing phenolic antioxidant results in significantly improved long term stability, as evidenced by greater retention of physical properties over time, of such compositions.
    Type: Grant
    Filed: June 15, 1989
    Date of Patent: November 20, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Richard A. Hayes, Leonard E. R. Kosinski, Mark E. Wagman
  • Compositions for compression refrigeration and methods of using them
    Patent number: 4971712
    Abstract: A blend of a tetrafluoroethane or pentafluoroethane refrigerant with a mono-functional random polyalkylene glycol based on significant amounts of ethylene oxide and propylene oxide and having an SUS viscosity at 100.degree. F. of 100 to 1200 is disclosed for use in compression refrigeration.
    Type: Grant
    Filed: June 2, 1989
    Date of Patent: November 20, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert A. Gorski, William L. Brown
  • Device for coagulating filaments
    Patent number: 4971539
    Abstract: A device for coagulating a warp of filaments from a linear spinneret by delivering a transparent, jetted sheet of coagulating liquid equally and uniformly along each side of the warp.
    Type: Grant
    Filed: June 21, 1989
    Date of Patent: November 20, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: David W. Luckey
  • Fibrids from intractable and thermoplastic polymer combinations
    Patent number: 4972028
    Abstract: Fibrids of poly-p-phenylenebenzobisthiazole, poly-p-phenylenebenzobisoxazole, or poly-2,5-benzoxazole and thermoplastic polymers in certain mixed solvents are provided.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: November 20, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: William C. Uy
  • System and device for package multiplexing in transmission of many data flows generated by a sole algorithm
    Patent number: 4970590
    Abstract: A system for transmission of signals coming from a source and processed by an algorithm that, to minimize data (values+parameters), generates values that are encoded, for example, with variable length. The data flows generated by the algorithm are each ordered in packages with the addition of information of source, of frame and of management before being multiplexed.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: November 13, 1990
    Assignee: Telettra - Telefonia Elettronica e Radio
    Inventors: Silvio Cucchi, Marzio Barbero
  • Method for continuously and automatically monitoring the electrical operability and control capability in a liquid crystal display unit
    Patent number: 4970503
    Abstract: A method for continuously and automatically monitoring the electrical operability and control reliability in a liquid crystal display unit and comprising, inter alia, determining the discharge or charge time of a capacitor comprised of a segment and the backplate or return electrode of the display unit when a voltage waveform fed to the segment has been disconnected, said time being determined by a binary counter which commences at the moment of disconnection of the feed waveform and stops when the capacitive discharge or charge waveform differs in binary state from the value of the segment feed wave.
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: November 13, 1990
    Assignee: Nuovopignone-Industrie Meccaniche e Fonderia S.p.A.
    Inventors: Francesco Principe, Vito Gargano
  • Method for coating substrates with boron nitride
    Patent number: 4970095
    Abstract: A method of producing coatings of boron nitride on substrates by the application of solutions containing boron compounds.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: November 13, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John D. Bolt, Frederick N. Tebbe
  • Process for the production of open pore ceramic bodies and ceramic bodies produced according to this method
    Patent number: 4970035
    Abstract: The invention concerns a process for the production of open pore ceramic bodies, wherewith is applied onto the contacting areas of the pores of an open pore matrix body a hardenable ceramic mass, this latter next being hardened and the matrix body being removed, there remaining behind a ceramic body of hardened, open pore ceramic mass. Before curing the ceramic mass, the matrix body is furnished with filaments extending, at least in one spatial direction, into this matrix body, which are removed during or after curing of the ceramic mass while forming appropriate channels.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: November 13, 1990
    Assignee: E. Dittrich KG "Schlussel"-Erzeugnisse
    Inventor: Kurt Baarsch
  • 3,5-dihydroxypentanoic acid derivatives useful as antihypercholesterolemic agents and method for preparing same
    Patent number: 4970221
    Abstract: 3,5-Dihydroxypentanoic acid derivatives are provided which are 6-hydroxy-8-(2,2-dimethyl-1-oxybutoxy-2-methyl)-substituted-thiazolidine derivatives and have the structure ##STR1## wherein Z is ##STR2## R.sup.6 is an alkali metal, lower alkyl or H; R.sup.1 and R.sup.2 are the same or different and are H, lower alkyl or aryl;X is S, O, ##STR3## or a single bond; R.sup.7 is lower alkyl; R.sup.3 is lower alkyl or aryl; R.sup.4 and R.sup.5 are the same or different and are H or lower alkyl; and represents a single bond or a double bond, and are HMG CoA reductase inhibitors and thus are useful as antihypercholesterolemic agents and in treating atherosclerosis, and also as antifungal agents.In addition, novel intermediates for use in preparing the above mevinic acid derivatives are also provided.
    Type: Grant
    Filed: July 28, 1989
    Date of Patent: November 13, 1990
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: David R. Magnin, Eric M. Gordon
  • Binary azeotropic composition of 2,3-dichloro-1,1,1,3-3-pentafluoropropane and methanol
    Patent number: 4970013
    Abstract: Azeotropic mixtures of 2,3-dichloro-1,1,1,3,3-pentafluoropropane and methanol, the azeotropic mixtures being useful in solvent cleaning applications.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: November 13, 1990
    Assignee: E. I. duPont de Nemours and Company
    Inventor: Abid N. Merchant
  • Electrode array for use in connection with a living body and method of manufacture
    Patent number: 4969468
    Abstract: The electrode array is a device for making multiple electrical contacts with cellular tissue or organs. The electrode array includes a base (1), a two dimensional array of conducting protuberances (2) arising from the base and serving as electrodes, and conductors (3) embedded onto the base and connected to such protuberances for transmitting electrical signals to and/or from the protuberances. The protuberances may also include an insulating layer (15) which covers either the entire protuberance or which leaves the tips exposed for making focused electrical contact. Electrode arrays may be used used singly or in combination with a second electrode array so as to form a sandwich around a target tissue. The sandwich electrode array (16, 17) may employ indexing cones for aligning the opposing electrode arrays and for limiting their vertical proximity.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: November 13, 1990
    Assignee: Alfred E. Mann Foundation for Scientific Research
    Inventors: Charles L. Byers, Joseph H. Schulman, David I. Whitmoyer
  • Perfluoropolymer coated pellicles
    Patent number: 4970099
    Abstract: Pellicles having films bearing at least one coating of perfluoropolymers as an anti-reflective surface, the perfluoropolymers being copolymerized units of tetrafluoroethylene and perfluro (alkyl vinyl) ether, and further comprising iodo moieties.
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: November 13, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Jerome T. Adams, Anestis L. Logothetis
  • Process for the manufacture of photosensitive materials having a low heat history
    Patent number: 4970037
    Abstract: This invention relates to a process for preparing a photosensitive composition having a low heat history which includes:(a) forming a substantially homogeneous dispersion by mixing at least one photoinitiator or photoinitiating system, and at least one binder selected from the group consisting of reactive binders and non-reactive binders in the form of a dispersion provided that when said binder is non-reactive then at least one reactive component is added which is capable of reacting with the photoinitiator;(b) coagulating the dispersion to form a coagulum and a liquid; and(c) substantially removing the liquid to form a photosensitive composition.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: November 13, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Fred Y. Kafka, Paul T. Shea
  • Carry all for transporting articles including a towel to a bathing area
    Patent number: 4967986
    Abstract: A carryall suitable for transporting articles including a towel to a bathing area includes an elongate and flexible pouch formed into a plurality of closeable compartments in the interior. Fasteners are formed on an inner surface of one end portion of the pouch and the outer surface of the opposite end portion so that the elongate pouch can be formed into a circular enclosure and held by the fasteners to define an area enclosing a rolled beach towel. One end portion of the pouch has an elongate shoulder strap fixed on the outer surface thereof, and a length of material is fitted across the outer surface of the other end portion of the pouch such that the elongate shoulder strap can be fitted under the length of material to hold the pouch in its rolled condition securely during transport of articles to a bathing area.
    Type: Grant
    Filed: April 5, 1989
    Date of Patent: November 6, 1990
    Assignee: E&B Giftware, Inc.
    Inventor: Micki Schildkraut
  • 4-Quinoline carboxylic acid derivatives useful as immunosuppressive agents
    Patent number: 4968701
    Abstract: 4-Quinolinecarboxylic acids and derivatives thereof, such as 2-(2'-fluoro-1,1'-biphenyl-4-yl)-6-fluoro-3-methyl-4-quinolinecarboxylic acid, are useful as immunomodulatory and anti-inflammatory agents. Pharmaceutical formulations containing such compounds are useful for the treatment of autoimmune diseases, organ transplantation rejection, graft vs. host disease, multiple sclerosis, and chronic inflammatory diseases such as rheumatoid arthritis.
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: November 6, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Neil R. Ackerman, Richard R. Harris, Scott E. Loveless, Russell H. Neubauer
  • Thermoplastic blend of polyphenylene ether polystyrene, hydrogenated block copolymer polyacrylate
    Patent number: 4968748
    Abstract: The invention provides thermoplastic blends of a polyphenylene ether, a polystyrene, a substantially hydrogenated styrene-butadiene block copolymer, and a rubbery acrylate polymer; said blends may have improved thermal stability, gloss, color, and processability, heat distortion, and impact strength.
    Type: Grant
    Filed: April 20, 1989
    Date of Patent: November 6, 1990
    Assignee: G E Chemicals, Inc.
    Inventors: Tracey L. Thompson, Peter H. Thompson
  • Press bonding apparatus method for terminating an optical fiber with a plastically deformable termination member
    Patent number: 4968109
    Abstract: An optical fiber material comprising at least one optical fiber and a wrapping material wrapping at least a part of the peripheral surface of the optical fiber in the axial direction of the optical fiber, wherein in its section taken at right angles to the axis of the optical fiber, the wrapping material holds the optical fiber tightly at its inside surfaces which face the optical fiber in the meridian direction of the optical fiber, or hold it tightly in at least three sites of its inner circumferential surface facing the optical fiber.The present invention provide also processes and devices for preparation thereof.
    Type: Grant
    Filed: July 28, 1989
    Date of Patent: November 6, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Toshiyasu Tanaka
  • Electromagnetic motor with secondary stator coils
    Patent number: 4968921
    Abstract: An electromagnetic motor includes a stator assembly having a stator body with at least one pole, a primary coil associated with the stator body and electrically interconnected with a power supply such that electric current is the primary coil creates a magnetic field in the pole, a secondary coil associated with the stator body and magnetically coupled with the body and primary coil, and a permanent magnet armature positioned so that there is a working air gap between the armature and the pole. Termination of current flow to the primary coil results in a collapsing magnetic field that induces an electric current in the secondary coil to reverse the magnetic polarity at the stator pole, and thereby reverse magnetic attractive propulsion force in the armature.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: November 6, 1990
    Assignee: G & E Engineering Limited
    Inventor: Dante S. Giardini