Patents Assigned to E
  • Holographic optical combiners for head-up displays
    Patent number: 4950567
    Abstract: Optical Combiners are provided for use in Head-Up Displays. The Combiners have a refractive index modulation greater than approximately 0.001.
    Type: Grant
    Filed: June 22, 1989
    Date of Patent: August 21, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Dalen E. Keys, William K. Smothers, Albert F. Harrington, Jacob Beutel, Scott R. Schicker, Dillon F. Scofield
  • Ostomy coupling
    Patent number: 4950261
    Abstract: An ostomy coupling has a pair of coupling rings. The body side ring has a flange attached to a medical grade adhesive pad and a chute wall surrounding a stomal aperture. The bag side ring has a rib member and a seal strip. To provide easy disengagement, the bag side ring has an integral flexible latching arm having a hook portion positioned to engage under a hook flange on the body side ring when the rings are coupled. The hook portion is disengagable from the hook flange by a lifting movement of the latching arm.
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: August 21, 1990
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Peter L. Steer
  • Hydro-rotary vascular catheter
    Patent number: 4950238
    Abstract: A hydro-rotary vascular catheter for insertion in a body vessel comprises a tubular outer shell having a fluid-directing head rotatably mounted at its distal end. A plurality of outlet passages are formed about the circumference of the fluid-directing head, including a row of primary outlet passages formed near the base of the fluid-directing head and a row of secondary outlet passages formed forwardly of the primary outlet passages. The primary outlet passages are inclined radially and tangentially with respect to the shell to impart a tangential component of velocity to fluid exiting through the primary openings, while the secondary outlet openings are inclined axially in order to eject fluid in a primarily forward direction. A protective shield surrounds the primary openings to prevent the radially ejected fluid from rupturing the walls of the vessel, and to increase the turbulence of the exiting fluid.
    Type: Grant
    Filed: July 20, 1989
    Date of Patent: August 21, 1990
    Assignee: Clarence E. Sikes
    Inventor: Dennis E. Sullivan
  • Laminar articles of a polyolefin and a nylon/polyvinyl alcohol blend
    Patent number: 4950513
    Abstract: A laminar article with good barrier properties to oxygenated and hydrocarbon compounds is prepared by blending a polyolefin with about 2 to 39% of a melt blend of a nylon and a polyvinyl alcohol component, using an alkylcarboxyl-substituted polyolefin as a compatibilizer.
    Type: Grant
    Filed: March 17, 1988
    Date of Patent: August 21, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Vinod K. Mehra
  • Manufacture of 5-cyanovaleric acid and its esters using cyclic cosolvents
    Patent number: 4950778
    Abstract: Manufacture of 5-cyanovaleric acid by carbonylation of pentenenitriles from a mixture consisting essentially of pentenenitrile, CO and at least one compound of the formula ROH, where R is hydrogen or alkyl of 1 to 6 carbon atoms, and a cyclic urea and/or a cyclic amide, where the combined weight of the cosolvents is between about 70% and 99% of the total weight of the reaction mixture.
    Type: Grant
    Filed: November 8, 1989
    Date of Patent: August 21, 1990
    Assignee: E. I. Du Pont de Nemours & Company
    Inventors: Patrick M. Burke, James B. Sieja
  • Chromium, molybdenum and tungsten compounds as charging adjuvants for electrostatic liquid developers
    Patent number: 4950576
    Abstract: An electrostatic liquid developer consisting essentially of (A) a nonpolar liquid having a Kauributanol value of less than 30, present in major amount; (B) thermoplastic resin particles less than 30 .mu.m average particle size; (C) a chromium, molybdenum or tungsten compound having an oxidation state of at least +3 wherein the anionic component is as defined above, and (D) a nonpolar liquid soluble ionic or zwitterionic charge director compound. The process of preparation of the electrostatic liquid developer is also described. The liquid developers are useful in copying, color proofing including digital color proofing, lithographic printing plates, and resists.
    Type: Grant
    Filed: May 10, 1989
    Date of Patent: August 21, 1990
    Assignee: E. I. DuPont De Nemours and Company
    Inventor: James R. Larson
  • Multi-segment play apparatus
    Patent number: 4950912
    Abstract: A method of playing a board game, where the game comprises a play surface and multi-segmented playing pieces representing characters adapted to stand upright on the surface. Each character is comprised of a stack of segments. By progressively removing segments from the bottom of the stack upwardly, the character appears to be sinding deeper and deeper below the surface, as for example, quicksand or a body of water. As segments are added back to the bottom of the stack in the reverse order, the character appears to emerge upwardly again. Portions of adjacent segments interconnect to maintain the segments in the desired stacked condition and relative orientation to one another.
    Type: Grant
    Filed: February 10, 1989
    Date of Patent: August 21, 1990
    Assignee: Adolph E. Goldfarb
    Inventors: Adolph E. Goldfarb, Randall Klimpert
  • Catalytic process of synthetizing ethylene-tetracarboxylic esters
    Patent number: 4950785
    Abstract: Process of synthetizing ethylene-tetracarboxylic esters by duplication of lonic compounds of the formula: ##STR1## wherein X=COOR, Y=COOR' and R and R' represent an organic group, characterized in that the duplication is an oxidative duplication conducted in the presence of a catalyst consisting of the salt of a transition metal.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: August 21, 1990
    Assignee: Presidenza del Consilglio dei Ministri Ufficio del Ministro per il coordinamento delle iniziative per la ricerca scientifica e tecnologica
    Inventors: Roberto Santi, Giuseppe Cometti
  • Shrink-wrapping apparatus and method
    Patent number: 4947605
    Abstract: There is disclosed an apparatus for forming a shrink-wrapped package from polyolefin film which overcomes the problems of forming the bottom lap seal of the tubular package formed from the film and initial low strength of the heat seal at the forward end of the package, by positioning the static sealer for the bottom lap seal upstream from the heat sealer for the forward end of the package and by using a ram to move packages into the tubular package but to stop them short of the heat seal at the forward end of the package.
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: August 14, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Harold E. Ramsey
  • Process for manufacture of polymethyl methacrylate sheet with controlled color
    Patent number: 4948546
    Abstract: AB dispersants made by group transfer polymerization aid in controlling color shift during casting of MMA polymer sheet containing color pigments and additives, particularly chain transfer agent and sheet release agent.
    Type: Grant
    Filed: December 2, 1988
    Date of Patent: August 14, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Walter H. Delphin, Clyde S. Hutchins, Robert J. Buchacek
  • Process of forming imaged photohardened material
    Patent number: 4948704
    Abstract: A positively working, tonable, photohardenable mixture, as well as image-forming material prepared therefrom are described, which as essential components, contains a binder or mixture of binders, a photohardenable compound, a photoinitiator or an initiator system and a multivalent metal compound to improve the toning properties of the material.
    Type: Grant
    Filed: September 29, 1989
    Date of Patent: August 14, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Richard D. Bauer, Ursula A. Kraska, Manfred A. J. Sondergeld
  • 2,3-dihydrobenzo[b]thiophenes
    Patent number: 4948418
    Abstract: This invention pertains to novel heterocyclic 2,3-dihydrobenzofuran and chromane compounds, including stereoisomers, agriculturally suitable compositions containing them, and their use as broad spectrum herbicides.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: August 14, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Joseph E. Semple
  • Herbicidal pyridine sulfonamides
    Patent number: 4948419
    Abstract: This invention relates to certain novel pyridine sulfonamide compounds, to compositions containing such compounds, and to a method of use of such compositions to control the growth of undesired vegetation.
    Type: Grant
    Filed: February 15, 1989
    Date of Patent: August 14, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mary A. Hanagan, Barry A. Wexler
  • Silver halide wash-out elements
    Patent number: 4948701
    Abstract: A gelatino, silver halide, wash-out element containing a dispersion of a plasticized hydrophobic thermoplastic polymer dispersed as droplets in water, is described. This element can be used to prepare wash-out images of superior quality and integrity. Carbon black also may be present to enhance and darken the resulting images prepared therefrom.
    Type: Grant
    Filed: November 1, 1989
    Date of Patent: August 14, 1990
    Assignee: E. I. DuPont de Nemours and Company
    Inventor: Robert P. Held
  • Amorphous copolymers of perfluoro-2,2-dimethyl-1,3-dioxole
    Patent number: 4948851
    Abstract: Articles made from amorphous dipolymers of perfluoro-2,2-dimethyl-1,3-dioxole with tetrafluoroethylene having high glass transition temperatures of 140.degree. C. or higher, low indices of refraction, and good physical properties, and low dielectric constants, include, among others, substrates for circuit boards, composites, sheets and films, optical lenses, and electronic current carrying devices.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: August 14, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Edward N. Squire
  • Benzylketone phospholipase A.sub.2 inhibitors
    Patent number: 4948813
    Abstract: The invention relates to benzylketone phospholipase A.sub.2 inhibitors, pharmaceutical compositions containing them, and methods of treating phospholipase A.sub.2 -mediated conditions in mammals by administration of a therapeutically effective amount of such a benzylketone phospholipase A.sub.2 inhibitor. These compounds are also intermediates in the synthesis of other PLA.sub.2 inhibitors.
    Type: Grant
    Filed: July 28, 1989
    Date of Patent: August 14, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Wendell W. Wilkerson
  • Peroxide-curable fluoroelastomers and chlorofluoroelastomers having bromine and iodine curesites and the preparation thereof
    Patent number: 4948852
    Abstract: Peroxide-curable fluoroelastomers and chlorofluoroelastomers are prepared in the presence of iodinated compounds, with iodine bonding to a substantial number of terminal positions on the fluoroelastomer, and comprising up to 3 weight percent of bromine-containing units selected from fluoroolefins and perfluoroalkyl perfluorovinyl ethers, and complementally at least 97 weight percent of either units of vinylidene fluoride, one or more fluoroolefins, and optionally perfluoroalkyl perfluorovinyl ethers, or units of tetrafluoroethylene, perfluoroalkyl perfluorovinyl ether, and ethylene. The resulting fluoroelastomers have improved processability, excellent strength and compression set properties, and are useful in the preparation of injection molded shaft seals, gaskets and other molded parts. The fluoroelastomer is prepared by a continuous emulsion polymerization process.
    Type: Grant
    Filed: October 26, 1989
    Date of Patent: August 14, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Albert L. Moore
  • Tie down device for truck beds
    Patent number: D310017
    Type: Grant
    Filed: June 8, 1987
    Date of Patent: August 21, 1990
    Assignees: James E. Irvin, Amy B. Irvin
    Inventor: James R. Matthews
  • Combined watch housing and bezel therefor
    Patent number: D310034
    Type: Grant
    Filed: October 15, 1987
    Date of Patent: August 21, 1990
    Assignee: E. Gluck Corporation
    Inventors: Rafael Braun, Bernard Fernandez, Li T. Wing
  • Combined watch and band therefor
    Patent number: D310035
    Type: Grant
    Filed: October 15, 1987
    Date of Patent: August 21, 1990
    Assignee: E. Gluck Corporation
    Inventors: Rafael Braun, Bernard Fernandez, Li T. Wing