Patents Assigned to E
  • Patent number: 6851805
    Abstract: An electro-active contact lens system and a method for making the electro-active contact lens system is disclosed. The system includes a contact lens, an electro-active element attached to the contact lens, a view detector attached to the contact lens and in electronic communication with the electro-active element, and a power source attached to the contact lens. In certain embodiments, the view detector may be a rangefinder which determines the distance of an object being viewed and these embodiments further include a means to stabilize the rangefinder between the opening of the eyelids when the electro-active contact lens system is worn by a wearer. The electro-active contact lens system provides electro-active vision correction of one or more focal lengths.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: February 8, 2005
    Assignee: E-Vision, LLC
    Inventors: Ronald D. Blum, William Kokonaski
  • Patent number: 6852823
    Abstract: Polyurethanes or polyurethane-ureas prepared from: (a) polytrimethylene ether glycol having a number average molecular weight in the range of about 1,000 to about 4,000 and unsaturated end groups in the range of about 0.003 to about 0.015 meq/g; (b) diisocyanate; and (c) diol or diamine chain extender; and their manufacture, intermediates and use.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: February 8, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Hari B. Sunkara, Edwin L. McInnis
  • Patent number: 6852986
    Abstract: This invention concerns a fluorometer preferably combined with a thermal cycler useful in biochemical protocols such as polymerase chain reaction (PCR) and DNA melting curve analysis. The present flourometer features a low heat-generating light source such as a light emitting diode (LED), having a one-to-one correspondence to each of a plurality of sample containers, such as capped PCR tubes in a standard titer tray. The flourometer of the present invention further comprises an optical path between each LED and its correspondingly positioned container, and another optical path between each flourescing sample within the positioned container and an optical signal sensing means. The instrument can be computer controlled.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: February 8, 2005
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: Jerald D. Lee, Stanley D. Dabell
  • Patent number: 6852306
    Abstract: The present invention relates to a process for making durable titanium dioxide pigment by vapor phase deposition of surface treatments on the titanium dioxide particle surface by reacting titanium tetrachloride vapor, an oxygen containing gas and aluminum chloride in a plug flow reactor to form a product stream containing titanium dioxide particles; and introducing silicon tetrachloride into the reactor at a point down stream of the point where the titanium tetrachloride and oxygen were contacted and where at least 97% of the titanium tetrachloride has been converted to titanium dioxide or where the reaction temperature is no greater than about 1200° C., and preferably not more than about 1100° C.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: February 8, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Narayanan Sankara Subramanian, Russell Bertrum Diemer, Jr., Pratibha Laxman Gai
  • Patent number: 6852792
    Abstract: This invention is directed to the discovery that ethylene-acid copolymers that have low melt flow index MFI (namely less than 100 g/10 min measured according to ASTM D1238 at 190° C., 2.16 kg) even with low acid content (such as less than 20 wt. %) can provide stable aqueous dispersions directly in aqueous media (i.e. free from any other solvent) with less than 1 wt. % non-dispersibles in single bases even at mild dispersion process conditions, at temperature less than 100°C., atmospheric pressure, and with low agitation speed.
    Type: Grant
    Filed: April 13, 2000
    Date of Patent: February 8, 2005
    Assignees: E. I. du Pont de Nemours and Company, Paramelt B.V.
    Inventors: John Capendale, Henk Felix, Karlheniz Hausmann, Eleni Karayianni, Metske Steffen Osinga, Bernard Rioux
  • Patent number: 6852803
    Abstract: A polymer dispersant for pigments based on a graft copolymer which contains a new type of urea functional group as the pigment anchoring group. The urea groups are attached to the graft copolymer by a convenient method which involves reaction of hydroxyl functional groups built in the graft copolymer with a diisocyanate that is capped at one end with ammonia or a primary or secondary amine. The reaction is convenient and clean. Substantial crosslinking or gelling of the polymer can be easily avoided by judicious selection of appropriate ingredients and processing conditions. These materials are effective in dispersing and stabilizing a wide range of pigments in solvent based systems and are particularly useful in forming pigment dispersions that are used in a variety of solvent borne coating compositions for automobiles and trucks, where they provide improved efficiency of pigment use, lower paint viscosity, and reduced emission of volatile organic solvent.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: February 8, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Sheau-Hwa Ma
  • Publication number: 20050024353
    Abstract: An electro-optic display, having at least one pixel capable of achieving any one of at least four different gray levels including two extreme optical states, is driven by displaying a first image on the display, and rewriting the display to display a second image thereon, wherein, during the rewriting of the display, any pixel which has undergone a number of transitions exceeding a predetermined value without touching an extreme optical state, is driven to at least one extreme optical state before driving that pixel to its final optical state in the second image.
    Type: Application
    Filed: June 29, 2004
    Publication date: February 3, 2005
    Applicant: E Ink Corporation
    Inventors: Karl Amundson, Robert Zehner, Ara Knaian, Benjamin Zion
  • Patent number: 6849684
    Abstract: The invention provides a molded composition having improved noise damping properties, made of a blend of a soft thermoplastic polyether elastomer and a hard polyester resin reinforced with a fibrous or particulate filler, the molded composition having an inhomogeneous structure comprising a surface part which is rich in elastomer and depleted in the polyester resin and the reinforcing filler compared to its inner part, obtained by monocomponent injection molding of a blend of the soft and the hard polyester resin wherein only the polyester resin contains the reinforcing particulate filler. The molded composition has a flex modulus Fm in the range 0.5 to 10 GPa, and maintains a sufficient minimum tan delta damping factor t_ over a temperature range of ?50° C. to 170° C.
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: February 1, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Ernst Poppe, Hans-Jurgen Huber, Ralf Hoffmann, Angelo Polese
  • Patent number: 6849217
    Abstract: Process for producing cables, in particular electrical cables for low-voltage power transmission or for telecommunications, which have self-extinguishing properties and produce a low level of fumes, in which the flame-retardant coating layer is obtained by extruding a flame-retardant composition comprising a polymer base, an inorganic flame-retardant filler and a dehydrating agent. The presence of the dehydrating agent makes it possible to obtain a smooth and uniform flame-retardant layer which is virtually free of pores.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: February 1, 2005
    Assignee: Pirelli Cavi e Sistemi S.p.A.
    Inventors: Franco Peruzzotti, Diego Tirelli, Paolo Liboi, Enrico Albizzati
  • Patent number: 6849768
    Abstract: Porous microcomposites have been prepared from perfluorinated ion-exchange polymer and metal oxides such as silica using the sol-gel process. Such microcomposites possess high surface area and exhibit extremely high catalytic activity.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: February 1, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mark Andrew Harmer, Qun Sun
  • Patent number: 6850032
    Abstract: Methods and apparatus for achieving a system, including: a polyphase machine having a plurality of sets of polyphase windings, each of the respective windings of a first of the sets of polyphase windings being inductively linked to one of each of the respective windings of the remaining sets of polyphase windings; a polyphase inverter operable to receive power from the windings of the first set and to produce a polyphase output; and a plurality of single-phase inverters, each operable to receive power from the windings of a respective one of the remaining sets and to produce a single-phase output, wherein each of the respective phases of the polyphase output may be coupled in series or parallel with one of the respective single-phase outputs to produce an aggregate polyphase output.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: February 1, 2005
    Assignee: E & M Power, Inc.
    Inventor: William A. Peterson
  • Patent number: 6848911
    Abstract: A rotatable shunting socket housing for telecommunication devices includes a body having two sockets respectively defined at two opposite side thereof. Each of the sockets is provided with a plurality of metal feet. A cover is mounted on a side of the body and between the sockets. A connector is rotatably mounted on the cover, and has a plug provided at an exterior side thereof. The plug is perpendicular to the sockets and electrically connected with the metal feet. The body and the cover can be rotated about the connector, and plugs of mounting cords inserted in the can be parallel to a wall, so that the mounting cords are not bent or twisted.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: February 1, 2005
    Assignee: Tsay-E International Inc.
    Inventor: Fabian Liu
  • Patent number: 6849169
    Abstract: Use of homopolymers or copolymers of 2-ethyl hexyl acrylate as an additive in aqueous cathodically depositable coatings to suppress the formation of surface defects in coating films, in which the proportion by mass of the comonomers in the monomer mixture used for the preparation of the copolymers does not exceed 35%.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: February 1, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Helmut Hoenig, Georg Pampouchidis, Gerald Hobisch
  • Patent number: 6849239
    Abstract: Disclosed herein is a method and apparatus for analyzing, sensing and measuring information related to the concentrations of various gases, including NOx, hydrocarbons, carbon monoxide and oxygen, in a multi-component gas system using chemical sensors and chemical sensor arrays. The sensors and sensor arrays use chemo/electro-active materials to analyze and detect the presence of gases.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: February 1, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Patricia A. Morris
  • Patent number: 6849781
    Abstract: Isolated nucleic acid fragments encoding starch synthase isoform V. are presented. Recombinant DNA constructs encoding all or a portion of starch synthase isoform V, in sense or antisense orientation, can be made, wherein expression of the recombinant DNA construct results in production of altered levels of the starch synthase isoform V in a transformed host cell.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: February 1, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Stephen M. Allen, Karlene H. Butler, Catherine J. Thorpe
  • Patent number: 6849701
    Abstract: A droplet polymerization process is provided to create efficacious molecularly imprinted polymers (MIPs). Such imprinted polymers have increased surface area for adsorptive or catalytic reactions. This method provides for monomer-template interactions in the absence of a suspending medium, thereby permitting formation of MIPs with increased template selectivity and substantial processing advantages. The process is particularly useful for separating isoflavones from soy whey.
    Type: Grant
    Filed: May 10, 2002
    Date of Patent: February 1, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Tucker Norton
  • Patent number: 6849822
    Abstract: A coating composition useful as an electrical insulation layer for metal conductors, particularly wires, that has improved de-coating properties for the partial de-coating of coated conductor by the use of laser irradiation; the coating composition comprises A) 1 wt. % to 90 wt. %, based on the total weight of the binder, of one or more binders, B) 0.3 wt. % to 25 wt. %, based on the total weight of the binder, of one or more reactive particles based on an element-oxygen bound network with elements from the series of aluminum, tin, boron, germanium, gallium, lead, silicon, zinc, the transition metals and the lanthanides and actinides, and C) 0 wt. % to 95 wt.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: February 1, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Gerhard Kiessling, Frank-Rainer Boehm, Hans-Georg Hinderer
  • Patent number: 6849783
    Abstract: This invention relates to an isolated nucleic acid fragment encoding a biotin synthases. The invention also relates to the construction of a chimeric gene encoding all or a portion of the biotin synthases, in sense or antisense orientation, wherein expression of the chimeric gene results in production of altered levels of the biotin synthases in a transformed host cell.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: February 1, 2005
    Assignee: E. I. Dupont de Nemours & Company
    Inventors: Stephen M. Allen, Emil M. Orozco, Jr., Anthony J. Kinney, Guo-Hua Miao
  • Patent number: D501301
    Type: Grant
    Filed: January 21, 2004
    Date of Patent: February 1, 2005
    Assignee: E. S. Originals, Inc.
    Inventor: Terrence Hooper
  • Patent number: D501376
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: February 1, 2005
    Assignee: M. E. Heuck Co.
    Inventor: Roger W. Heuck