Patents Examined by Kyle Baumstein
  • Patent number: 7671157
    Abstract: The C—H bond of pendant aromatic groups such as commercial polystyrenes with three types of tacticities (syndiotactic, isotactic, atactic) undergo catalyzed functionalization with boron reagents. A boronic ester group formed on the polymer in the polystyrene was further converted to hydroxy and arene via oxidation and coupling reactions, respectively. These functionalizations proceeded without significantly affecting the molecular weight of starting polymer and the functional concentrations could be easily controlled by changing the ratio of boron reagent to monomer unit.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: March 2, 2010
    Assignee: Board of Regents of the Nevada System of Higher Education on Behalf of the University of Nevada, Las Vegas
    Inventor: Chulsung Bae
  • Patent number: 7655738
    Abstract: A thermoset and method of making such by crosslinking a mixture of a polyhedral oligomeric silsesquioxane having pendent siloxane groups or unsaturated carbon bonds and a siloxylcarborane compound having unsaturated carbon bonds.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: February 2, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Teddy M Keller, Manoj K. Kolel-Veetil
  • Patent number: 7632882
    Abstract: The present invention is directed to a rheology control agent for coating compositions. The rheology control agent includes a compound having the Formula (I) including isomers or mixtures of isomers thereof: wherein p is 0, 1, 2, or 3; and R2, R3, R4, X and Y groups are described in the specification. The solvent-borne coating compositions containing the rheology control agent have improved rheology control on application and are useful for OEM, refinishing or repainting the exterior of automobile and truck bodies and parts thereof.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: December 15, 2009
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Christian Peter Lenges, Yanhui Niu, Yu-Ling Hsiao, Jiang Ding, Robert John Barsotti, Renee J. Kelly, Robert James Butera, Young H. Kim
  • Patent number: 7632563
    Abstract: A transparent composite article comprising a polyurethane matrix and incorporated within the matrix nanofibers having a diameter up to 5000 nanometers.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: December 15, 2009
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Stuart D. Hellring, Kaliappa G. Ragunathan, Thomas G. Rakavina, Victoria A. Trette
  • Patent number: 7612145
    Abstract: A composite material containing a thermoplastic material and a non-functional aromatic end group-containing polymer is disclosed. Also disclosed are methods of making and use the composite materials.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: November 3, 2009
    Assignee: Rohm and Haas Company
    Inventors: Bahar Azimipour, Chuen-Shyong Chou, Edward E. LaFleur, Nazir Ahmed Memon
  • Patent number: 7541426
    Abstract: Fluorinated comb co-polymers have a main chain including a semi-rigid hydrophobic fluorinated poly(ether) backbone and comb segments in the form of flexible and monodisperse side chains that are more hydrophilic than the backbone. The side chains may be hydrophilic polymeric chains obtained from “living-type” polymerization, for example polymethacrylates, polyethylene oxides, polystyrenes. Hydrophilic functionality, for example, ionic groups may be selectively introduced onto the side chain post polymerization. The side chain may be sulfonated ?-methyl polystyrene. Such polymers are useful in proton exchange membranes.
    Type: Grant
    Filed: May 26, 2006
    Date of Patent: June 2, 2009
    Assignee: National Research Council of Canada
    Inventors: Tyler B. Norsten, Jianfu Ding, Michael D. Guiver, Yinghua Qi
  • Patent number: 7538163
    Abstract: A method of preparing a polymer involving reacting at least one backbone carbamate (and/or optional urea) nitrogen of a thermoplastic polymer with a modification agent to form a modified polymer.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: May 26, 2009
    Assignee: Medtronic, Inc.
    Inventors: Deon Bezuidenhout, Jacobus P. Theron, Lawrence J. Higham, Peter P. Zilla
  • Patent number: 7495059
    Abstract: Polyurethane-based pressure-sensitive adhesive, characterized in that the polyurethane is composed of the following starting materials which are reacted catalytically with one another in the stated proportions: a) at least one aliphatic or alicyclic polyisocyanate having a functionality of in each case less than or equal to three, b) a combination of at least one triol A based on polypropylene glycol and having an average number-averaged molecular weight Mn of less than or equal to 1000 and a triol B based on polypropylene glycol and having an average number-averaged molecular weight Mn of greater than or equal to 1000, preferably greater than or equal to 3000, the ratio of the number of hydroxyl groups of the triol component A to the number of hydroxyl groups of the triol component B being between greater than 0 and 12, the ratio of the number of isocyanate groups to the total number of hydroxyl groups being between 0.8 and 1.15, preferably between 0.95 and 1.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: February 24, 2009
    Assignee: tesa AG
    Inventors: Uwe Schümann, Kirstin Weiland, Philippe Hesse