Abstract: This invention relates to a method by which olefinically-unsaturated organic molecules, which are otherwise nonpolymerizable, may be homopolymerized or copolymerized with conventional monomers through the use of cobalt chain transfer catalysts. The resulting macromonomers contain one terminal functional group and a terminal double bond on the other end of the chain.
Type:
Grant
Filed:
November 17, 1998
Date of Patent:
September 12, 2000
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
Steven Dale Ittel, Alexei Alexeyevich Gridnev
Abstract: An implantable enzyme-based monitoring system suitable for long term in vivo use to measure the concentration of prescribed substances such as glucose is provided. In one embodiment, the implantable enzyme-based monitoring system includes at least one sensor assembly, an outer membrane surrounding the sensor assembly and having a window therein, and a polymeric window cover affixed to the outer membrane and covering the window. Preferably, the outer membrane of the monitoring system is silicone and the window cover is a polymer of 2-hydroxyethyl methacrylate (HEMA), N,N,-dimethylaminoethyl methacrylate (DMAEMA) and methacrylic acid (MA). Also provided herein is an implantable enzyme-based monitoring system having at least one sensor assembly, an outer membrane surrounding the sensor assembly and a coating affixed to the exterior surface of the outer membrane, wherein the coating resists blood coagulation and protein binding to the exterior surface of the outer membrane.
Type:
Grant
Filed:
October 20, 1997
Date of Patent:
September 12, 2000
Assignee:
Alfred E. Mann Foundation
Inventors:
Joseph H. Schulman, Charles L. Byers, Gerald E. Adomian, Michael S. Colvin
Abstract: A process for creating an electronically addressable display includes multiple printing operations, similar to a multi-color process in conventional screen printing. In some of the process steps, electrically non-active inks are printed onto areas of the receiving substrate, and in other steps, electrically active inks are printed onto different areas of the substrate. The printed display can be used in a variety of applications. This display can be used as an indicator by changing state of the display after a certain time has elapsed, or when a certain pressure, thermal, radiative, moisture, acoustic, inclination, pH, or other threshold is passed. In one embodiment, the display is incorporated into a battery indicator. A sticker display is described. The sticker is adhesive backed and may then be applied to a surface to create a functional information display unit. This invention also features a display that is both powered and controlled using radio frequencies.
Type:
Grant
Filed:
August 27, 1998
Date of Patent:
September 12, 2000
Assignee:
E Ink Corporation
Inventors:
Jonathan D. Albert, Barrett Comiskey, Joseph M. Jacobson
Abstract: This invention relates to flash spinning copolymers which provide softness and quietness to nonwoven sheet structures formed of plexifilamentary film-fibril material. In particular, flash spinning polyethylene with an ethylene copolymer provides a substantial improvement in softness and quietness.
Type:
Grant
Filed:
March 27, 1997
Date of Patent:
September 12, 2000
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
David Jackson McGinty, Hyunkook Shin, Young H. Kim
Abstract: A "twin-mount" pole mounting assembly for use with a pole mounting "bracket" is disclosed, useful to hold or support lighting, security equipment (such as cameras and microphones), safety mirrors, electrical transmission lines and insulators, and the like accessories, the mounting assembly consisting of a mounting sleeve having a plurality of tubular sections, arranged so that a user may mount the bracket on poles of either circular or square cross-section, or on a tenon of circular or square cross-section affixed to such poles.
Abstract: Dispersions of an aqueous carrier medium, an insoluble particle, and a graft copolymer dispersant having backbone and side chain portions wherein both portions are prepared from ethylenically unsaturated monomers and either the backbone or sidechain portion is hydrophilic and the other portion is hydrophobic. In a preferred embodiment, the dispersion is formulated as an ink that exhibits excellent resistance to flocculation and provides images with a high color strength and gloss when used in a thermal ink jet printer.
Abstract: Lithium chloride improves electrolytic cell efficiency and performance when included in the electrolyte. Self-aligning cell diaphragms improve cell efficiency and reduce maintenance.
Type:
Grant
Filed:
December 14, 1999
Date of Patent:
September 12, 2000
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
Oswald Robert Bergmann, Howard M. Blank, Russell Bertrum Diemer, Jr., David Jain, Thomas A. Messing, Walter John Simmons
Abstract: This invention relates to herbicidal mixtures comprising halosulfuron-methyl and at least one compound selected from the group consisting of bensulfuron-methyl, azimsulfuron, pyrazosulfuron-ethyl, imazosulfuron, cyclosulfamuron and ethoxysulfuron, herbicidal compositions of said mixtures, and a method for the use of said mixtures to control undesired vegetation.
Type:
Grant
Filed:
June 22, 1999
Date of Patent:
September 5, 2000
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
Richard Manly Edmund, Otis Wilson Howe, III
Abstract: This invention covers a film base wherein polymers forming a polymeric film surface and selected from polyesters, polyolefins and polyamides are coated with an adhesion enhancing primer coating containing (a) a functionalized .alpha.-olefin containing copolymer; and (b) a crosslinking agent selected from the group consisting of amino formaldehyde resins, polyvalent metal salts, isocyanates, blocked isocyanates, epoxy resins and polyfunctional aziridines; and wherein the adhesion enhancing primer coating is applied to the polymeric film surface and reacted, at elevated temperatures with newly generated polymeric film surfaces formed during uniaxial or biaxial stretching and heat setting.
Type:
Grant
Filed:
July 16, 1996
Date of Patent:
September 5, 2000
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
Richard Paul Pankratz, Clifford Cheng-Shiou Chang, Marc Bandman
Abstract: A piston which has a diameter of about 70 to about 100 mm and which is preferably produced with a resistant, malleable alloy having low density (lower than about 3 g/cm.sup.3) and mechanical properties at high temperatures such that a yield stress greater than about 120 Mpa at temperatures of the order of 300.degree. C. to 350.degree. C. is obtained. In the preferred embodiment, the piston is a single piece piston, comprising a head portion of diameter D ranging from about 70 to about 100 mm and a skirt portion downwardly projected from the head portion and inside which is provided a pair of wrist pin bosses, each having a hole with a diameter d and axial extension L for bearing the articulating wrist pin of the piston.
Type:
Grant
Filed:
March 19, 1999
Date of Patent:
September 5, 2000
Assignee:
Metal Leve S.A. Industria E. Comercio
Inventors:
Eduardo Bueno Nigro, Jose Valentim Lima Sarabanda, Marcos Clemente, Germano Moreira de Almeida
Abstract: Self-lubricating is provided for cathodic electrodeposited coatings by including in the coating bath fine particles of polytetrafluoroethylene that have been milled with a cationic polyepoxide resin.
Type:
Grant
Filed:
September 9, 1998
Date of Patent:
September 5, 2000
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
Taddesse Gebregiorgis, Kathleen S. Shields, John Joseph Vincent
Abstract: Mixtures of different polyolefins or branched polyolefins may be made by direct, preferably simultaneous, polymerization of one or more polymerizable olefins using two or more transition metal containing active polymerization catalyst systems, one of which contains preferably late transition metals complexed to selected ligands. The polyolefin products may have polymers that vary in molecular weight, molecular weight distribution, crystallinity, or other factors, and are useful as molding resins and for films.
Type:
Grant
Filed:
August 25, 1998
Date of Patent:
September 5, 2000
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
Edward Bryan Coughlin, Samuel David Arthur, Steven Dale Ittel
Abstract: A coating containing flakes made of a thermally conductive material is disposed on the inner surface of the bottom of a cooking vessel. A first portion of the flakes is oriented in the plane of the inner surface and a second portion of the flakes is oriented in the thickness direction of the coating to form a heat conductive pattern. The flakes include flakes having a longest dimension that is greater than the thickness of the coating, thus improving heat transfer from the bottom of the cooking vessel to the upper surface of the coating. The heat conductive pattern includes a plurality of segments that extend outwardly from a center region of the inner surface toward an outer peripheral region. The outwardly extending segments improve heat transfer from the center region to the outer peripheral region, especially when the cooking vessel is heated by a heating element having a diameter smaller than the diameter of the cooking vessel bottom.
Type:
Grant
Filed:
January 8, 1999
Date of Patent:
September 5, 2000
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
Jay Z. Muchin, Kenneth Batzar, Thomas J. Leck
Abstract: Perfluoroelastomer compositions are provided which have excellent high temperature properties. The perfluoroelastomer component of the compositions are copolymers having a plurality of carbonyl-containing functional groups and copolymerized monomer units comprising a perfluoroolefin, a perfluoro(vinyl) ether and a nitrile-containing cure site monomer. The curative component is other than an organotin compound and includes peroxides, ammonium salts, aromatic amino compounds, bisamidrazones, and bisamidoximes.
Abstract: The invention relates to a breast prosthesis for breast-amputated women with a flexible plastic body (1) comprising two plastic sheets (2, 3) connected to each other along their common edge (23) and a plastic mass (4) enclosed between the two plastic sheets (2, 3), wherein the plastic body (1) has a front side (21) formed to resemble the contour of the natural breast and a back side (31) capable of facing the torso of the person, and an elastically deformeable thin part (6) secured with its edge (611) to the back side (31) of the plastic body (1). In order to improve the wear comfort of the breast prosthesis, the thin part (6) is secured to the plastic body (1) inside the common edge (23) of the connected plastic sheets (2, 3).
Type:
Grant
Filed:
April 22, 1997
Date of Patent:
September 5, 2000
Assignee:
F + E Gesellschaft fur Bekleidungsinnovation mbH & Co. KG
Abstract: A melt-mixed blend of thermoplastic polyester and grafted fluoropolymer having polar functionality exhibits good mechanical properties and is useful in articles for transport and containment of fuels and as a component of laminates, such as fuel hose.
Type:
Grant
Filed:
January 22, 1999
Date of Patent:
September 5, 2000
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
Peter Dwight Spohn, Pallatheri Manackal Subramanian
Abstract: Data packets from a remote computer are merged together with data packets from a local computer to form a combined stream of data packets. A network interface card connects a computer with a network including a plurality of computers. A remote input of the network interface card receives remote data generated by another computer in the network. A local input of the network interface card receives local data generated by the local computer for delivery to another computer in the network. Local data is stored in a local storage device when remote data is being retransmitted to the network by a processor. When the processor has finished retransmitting the remote data to the network, the processor then transmits the stored local data to the network. Remote data is stored in a remote storage device when local data is being transmitted to the network by the processor. When the processor has finished transmitting the local data to the network, the processor then retransmits the stored remote data to the network.
Abstract: Fluorinated imides useful for imparting repellency of low surface tension fluids to thermoplastic polymers of formulae ##STR1## wherein R.sub.1 is F(CF.sub.2).sub.x --(CH.sub.2).sub.m, or F(CF.sub.2).sub.x SO.sub.2 N(R.sub.5) (CH.sub.2)p wherein x is from about 4 to about 20, m is from about 2 to about 6, p is from 1 to about 12, and R.sub.5 is an alkyl radical of from 1 to about 4 carbons;R.sub.2 is a linear, branched or cyclic alkylene or poly(oxyalkylene) hydrocarbon group having from about 2 to about 15 carbons;R.sub.3 is selected from the group consisting of F(CF.sub.2).sub.x --(CH.sub.2).sub.m, F(CF.sub.2).sub.x --(CH.sub.2).sub.m --OC(O)--(CH.sub.2).sub.n, and F(CF.sub.2).sub.x SO.sub.2 N(R.sub.5)(CH.sub.2).sub.p OC(O)(CH.sub.2).sub.n wherein x is from about 4 to about 20, m is from about 2 to about 6, n is about 2 to about 12, p is from 1 to about 12, and R.sub.5 is an alkyl radical of from 1 to about 4 carbons;R.sub.4 is an alkyl or alkenyl group of from about 4 to about 20 carbons, andR.sub.
Type:
Grant
Filed:
April 7, 1998
Date of Patent:
September 5, 2000
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
Theodor Arthur Liss, Kimberly Gheysen Raiford, Edward James Greenwood
Abstract: The present invention relates to cosmetic or pharmaceutical formulations for topical application which comprises an antimicrobial effective amount of 3-furan carboxylic acid. The formulation also optionally comprises an anti-irritant effective amount of ferulic acid and an antimicrobial effective amount of 2-furan carboxylic acid.
Abstract: A system and device for loading and transporting a vehicle on a vehicle transporting surface simplifies the loading of vehicles by aligning the vehicle as it is loaded and holds the vehicle securely in alignment once loaded. The vehicle loading device is formed with an angulated surface that is attached to the side of the vehicle transporting surface. A flat plate attaches to the angulated surface and a brace extends downward from the far edge of the flat plate and rests against the side of the vehicle transporting surface. The vehicle is loaded onto the vehicle transporting surface with the angulated surface pressing against the interior of tracks or wheels of the vehicle. The angulated surface forces an initially misaligned vehicle to slide into proper alignment on the vehicle transporting surface. Opposing forces are thus exerted on the inside of the tracks and wheels which cause and maintain proper alignment.