Patents Assigned to I
  • Vapor permeable poly(etherimide) ester elastomer films
    Patent number: 4868062
    Abstract: A flexible breathable waterproof product of a film of a thermoplastic hydrophilic poly(etherimide) ester elastomer which is the reaction product of one or more diols, one or more dicarboxylic acids, and one or more poly(oxyalkylene imide) diacids said poly(oxyalkylene imide) diacid containing sufficient repeating units of ethylene oxide so that the resulting poly(etherimide) ester elastomer has about 25-60 weight percent ethylene oxide units and said film has a water vapor transmission rate of at least about 3500 gm mil/m.sup.2 /24 hours according to ASTM E96-66 (Procedure BW).
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: September 19, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Guenther K. Hoeschele, George J. Ostapchenko
  • Radar arrangements
    Patent number: 4868917
    Abstract: A radar apparatus transmits right circular polarized signals and selects the right circular polarized components of the corresponding returns. It also transmits left circular polarized signals and selects the left circular polarized components of the corresponding returns. The selected left and right circular polarized compoments are processed by, for example, averaging them, producing a weighted average of them, or selecting the component of larger value.
    Type: Grant
    Filed: March 7, 1980
    Date of Patent: September 19, 1989
    Assignee: E M I Limited
    Inventor: Sydney C. Woolcock
  • Cleaning composition of terpene compound and dibasic ester
    Patent number: 4867800
    Abstract: A cleaning composition is disclosed which is suitable for cleaning flux residue from a printed circuit board and comprises a terpene compound and dibasic ester solvent.
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: September 19, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Kenneth T. Dishart, Mark C. Wolff
  • Orthodontic ligature
    Patent number: 4867679
    Abstract: An orthodontic device comprising filament and one or more retaining sheaths through which the filament is looped, useful for retaining wires on orthodontic brackets.
    Type: Grant
    Filed: April 18, 1988
    Date of Patent: September 19, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Robert L. Rackley
  • Herbicidal sulfonamides
    Patent number: 4867783
    Abstract: This invention relates to certain sulfonylurea compounds having substituents ortho to the sulfonyl-urea linkage that includes a 3- or 4-membered carbocyclic ring, a saturated 5- or 6-membered carbocyclic ring of a heterocyclic ring which contains 1 hetero-atom selected from O, S and NR.sub.3, agriculturally suitable compositions thereof and a method of their use as herbicides or plant growth regulants.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: September 19, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: James V. Hay, Barry A. Wexler, Donna F. Zimmerman
  • Method for preparing ceramic tape compositions
    Patent number: 4867935
    Abstract: A method for preparing a dielectric ceramic composition containing hollow microspheres which is castable on a substrate in the form of a tape or sheet for multilayer circuits in which crushing or breaking of the microspheres is avoided, and a multilayer sheet structure formed from said tape.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: September 19, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: William H. Morrison, Jr.
  • Fluoroelastomer compositions containing a tetraalkylammonium halide and vulcanization accelerator
    Patent number: 4868234
    Abstract: A fluoroelastomer composition that has enhanced adhesion to metal when cured which comprises:(a) an elastomeric copolymer of vinylidene fluoride and at least one other fluorinated monomer,(b) a vulcanization accelerator that is a quaternary phosphonium compound,(c) a crosslinking agent selected from the group consisting of a bisphenol or a polyhydroxy phenol of the formula: ##STR1## where R is H or an alkyl group or an aryl group and R' is an alkyl group or an aryl group, and(d) 0.02-0.8 weight percent based on the weight of the elastomeric copolymer of a metal adhesion promoter that is a tetraalkylammonium halide where each alkyl group contains 1-10 carbon atoms and the halide is a chloride, bromide or iodide. When cured in contact with metal the fluoroelastomer composition forms a strong bond with the metal surface.
    Type: Grant
    Filed: April 27, 1988
    Date of Patent: September 19, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: David L. Tabb, Janet M. Wilson
  • Phenyl-substituted sulfonamides
    Patent number: 4867781
    Abstract: Herbicidal sulfonamides are useful as general or selective herbicides, both pre-emergence and post-emergence.
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: September 19, 1989
    Assignee: E. I. Du Pont De Nemours and Company
    Inventor: Robert J. Pasteris
  • Catalyst for group transfer polymerization
    Patent number: 4866145
    Abstract: Group Transfer Polymerization wherein the catalyst consists essentially of:(a) about 10 to 100 mol % of a silane of specific formula; and(b) 0 to about 90 mol % of at least one of a suitable Lewis acid or mercury compound.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: September 12, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ira B. Dicker
  • Gas phase preparation of aluminum nitride
    Patent number: 4865830
    Abstract: Admixing an aluminum alkyl, and optionally a boron compound, with a hydride of nitrogen in the gas phase and maintaining a gas phase temperature, optionally in the presence of a carrier gas, and producing aluminum nitride alone or in admixture with a precursor thereof or boron nitride or both.
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: September 12, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ulrich Klabunde, Edward J. Newitt, Frederick N. Tebbe
  • Decoupled fiber optic feedthrough assembly
    Patent number: 4865410
    Abstract: A fiber optic device is provided with a feedthrough assembly adapted to decouple deflections imposed on the feedthrough from lensed end of a fiber disposed within the feedthrough assembly.
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: September 12, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Calixto Estrada, James D. Hamerslag, Robert W. Hooley, John W. Hunt, Melvin H. Johnson, Duncan D. McCabe, Joseph A. Perrotto
  • Multilayered polyolefin high shrinkage, low-shrink force shrink film
    Patent number: 4865902
    Abstract: A multi-layered, heat shrinkable film is disclosed which possesses one or two outer layers of a polyolefin and a core layer of material having a melting point below the temperature required to orient the material of the outer layer or layers, the core layer comprising 50 to 95% of the overall thickness of the film.
    Type: Grant
    Filed: March 8, 1988
    Date of Patent: September 12, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ralph C. Golike, Robert W. Thies
  • Process for making 90 K superconductors from acetate precursor solutions
    Patent number: 4866031
    Abstract: There is disclosed an improved process for preparing a superconducting composition having the formula MBa.sub.2 Cu.sub.3 O.sub.x wherein M is selected from the group consisting of Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu; x is from about 6.5 to about 7.0; said composition having a superconducting transition temperature of about 90 K; said process consisting essentially of preparing a precursor solution, drying the solution of obtain a solid material, and heating and cooling the solid material under specified conditions to obtain the desired product. In another embodiment, a shaped superconducting MBa.sub.2 Cu.sub.3 O.sub.x article is prepared by impregnating an article of cellulose material with the precursor solution, drying the impregnated article, and heating and cooling the impregnated article under prescribed conditions to obtain the desired product.
    Type: Grant
    Filed: June 9, 1987
    Date of Patent: September 12, 1989
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: John D. Bolt, Munirpallam A. Subramanian
  • Tetrachloroethyl phosphorothioate soil insecticide
    Patent number: 4866045
    Abstract: A method for controlling insect larvae which inhabit the soil and feed on growing plants selected from rootworms, cutworms and wireworms which comprises applying to the soil habitat of the larvae an insecticidally-effective amount of 0,0-diethyl 0-(1,2,2,2-tetrachloroethyl)phosphorothioate.
    Type: Grant
    Filed: November 25, 1988
    Date of Patent: September 12, 1989
    Assignee: E. I. Du Pont Nemours and Company
    Inventor: Charles H. Tieman
  • Door latch and stop mechanism
    Patent number: 4862641
    Abstract: A latch device for a hinged door including a resiliently flexible latch bar secured to the door and having a free portion extending along the inside of the door to an end portion, near the door edge, which engages a catch by means of the bending and straightening of the latch bar. Preferred embodiments include a stop bar similar to the latch bar, but extending beyond the opposite door edge to engage another catch to hold the door open. The latch and stop bars are preferably a single bar with two free portions at its opposite ends. The catches have bearing surfaces which distort the bar as the door swings to prepare it to snap into locking engagement with the catches. Access to the latch bar, to allow unlatching, is provided through the door.
    Type: Grant
    Filed: August 7, 1987
    Date of Patent: September 5, 1989
    Assignee: J. I. Case Company
    Inventor: Franklin R. McCarty
  • Apparatus and process for packaging yarn and product therefrom
    Patent number: 4863029
    Abstract: A layered yarn package is formed of continuous filament yarn wads wherein the yarn alternates between compacted and extended lengths by axially compacting the yarn into a length, segmenting the length into alternating extended and compacted lengths then arranging the compacted lengths in a common axial direction one next to the other to form a layer. The layer may be compressed. One or more layers may form the package.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: September 5, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Joseph E. Koskol, Robert J. Santucci, Louis G. Rosanio, Jr.
  • Hinge assembly for folding implement frame
    Patent number: 4862758
    Abstract: An implement floating frame hinge assembly is provided for accommodating the folding of pivotally connected first and second frame sections wherein a first lever is pivotally connected to the first frame section, a second lever is connected between the second frame section and the first lever, an an extendable and retractable actuator is pivotally connected between the first frame section and the second lever. The assembly includes a connection of the second lever to the second frame section about a pivot axis fixed relative to the second frame section. A pin is moveable with the second lever at a fixed distance from the pivot axis of the connection between the second frame section and the second lever.
    Type: Grant
    Filed: January 6, 1988
    Date of Patent: September 5, 1989
    Assignee: J. I. Case Company
    Inventor: Kevin J. Magee
  • Sway limiting means for a tractor hitch
    Patent number: 4862971
    Abstract: A sway limiting apparatus for a tractor hitch assembly including draft links which are vertically movable between a lower operative position and an upper transport position. The sway limiting apparatus includes a telescopic linkage assembly whose operative effectiveness in limiting lateral sway of the hitch assembly is controlled by a cam defining a cam profile. The cam profile and the linkage assembly cooperate to normally control lateral sway of the hitch assembly as a function of the vertical position of a draft link relative to the horizontal.
    Type: Grant
    Filed: September 19, 1988
    Date of Patent: September 5, 1989
    Assignee: J. I. Case Company
    Inventors: Joseph A. Azzarello, Carlos T. San Luis, Gerald L. Wagenbach
  • Reactive posttreatment for gas separation membranes
    Patent number: 4863496
    Abstract: A process for applying and polymerizing a monomeric material to a gas separation membrane to improve the permselectivity of the membrane with respect to at least one pair of gases is disclosed.
    Type: Grant
    Filed: April 13, 1988
    Date of Patent: September 5, 1989
    Assignee: E. I. Du Pont de Nemours and Co.
    Inventors: Okan M. Ekiner, Richard A. Hayes, Philip Manos
  • Analysis instrument having a blow molded reaction chamber
    Patent number: 4863693
    Abstract: An analysis instrument is characterized by a rotatable mold ring onto which is drawn superimposed sheets of plastic material. The inner sheet is softened and formed into an indented mold cavity and the outer sheet sealed thereover to define a partially closed sample chamber, or cuvette. A sample to be analyzed is introduced into the chamber. Any of the chambers may have selectively introduced thereinto a suitable reagent and the reaction occurring in any chamber may be selectively monitored at any predetermined circumferential location of the mold ring.
    Type: Grant
    Filed: December 23, 1987
    Date of Patent: September 5, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Gary W. Howell