Patents Examined by Hoa Thi Le
  • Patent number: 7108915
    Abstract: Water-dispersible nanoparticles are prepared by applying a coating of a multiply amphipathic dispersant to the surface of a hydrophobic nanoparticle comprised of a semiconductive or metallic material. The multiply amphipathic dispersant has two or more hydrophobic regions and two or more hydrophilic regions, and is typically polymeric. Preferred polymeric dispersants are comprised of (1) a hydrophobic backbone with hydrophilic branches, (2) a hydrophilic backbone with hydrophobic branches, or (3) a backbone that may be either hydrophobic or hydrophilic, and substituted with both hydrophilic and hydrophobic branches. Monodisperse populations of water-dispersible nanoparticles are also provided, as are conjugates of the water-dispersible nanoparticles with affinity molecules such as peptides, oligonucleotides, and the like.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: September 19, 2006
    Assignee: Invitrogen Corp.
    Inventors: Edward William Adams, Marcel Pierre Bruchez, Jr.
  • Patent number: 5132181
    Abstract: Disclosed is a method of producing a functionalized layer and an aluminum hydroxide layer on an aluminum substrate, the aluminum hydroxide layer located between the substrate and the functionalized layer. The method comprises the steps of subjecting an aluminum substrate to a hydrothermal treatment in an aqueous solution having a pH in the range of 2 to 14 to form a layer of aluminum hydroxide on said substrate and thereafter treating said aluminum substrate with a phosphorus-containing acid selected from phosphinic and phosphonic acid to form a functionalized layer on said aluminum hydroxide layer, the functionalized layer comprised of the reaction product of said acid and the layer of aluminum hydroxide.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: July 21, 1992
    Assignee: Aluminum Company of America
    Inventors: Karl Wefers, Gary A. Nitowski, Larry F. Wieserman
  • Patent number: 5082742
    Abstract: This invention relates to a composite of a thermoplastic resin (other than a polyolefin) and a polyolefin adhered together by a tie-layer system comprised of at least two co-reactive, functionalized polymers either in laminate contact or as a blend.
    Type: Grant
    Filed: September 24, 1990
    Date of Patent: January 21, 1992
    Assignee: Monsanto Company
    Inventor: Allen R. Padwa
  • Patent number: 5082741
    Abstract: The present invention relates to a novel thermal spray material in any one of the forms of a particle mixture material, a granule material, and an electric fused material of 2CaO.SiO.sub.2 and CaO.ZrO.sub.2. As 2CaO.SiO.sub.2, .gamma.-2CaO.SiO.sub.2 is used. The ratio of .gamma.-2CaO.SiO.sub.2 to CaO.ZrO.sub.2 is specified by weight %. This invention relates also to a thermal sprayed member formed by thermal spraying this thermal spray material on a thermal resistant substrate.
    Type: Grant
    Filed: February 8, 1991
    Date of Patent: January 21, 1992
    Assignees: Tocalo Co., Ltd., Onoda Cement Co., Ltd.
    Inventors: Hatsuo Taira, Masakazu Ikeda, Yoshio Harada, Hiroshi Hagiwara
  • Patent number: 5069966
    Abstract: The present invention provides a thin continuous organic coating on metals, particularly on continuous metal bodies, so that the product obtained is weldable and resistant to corrosion as well as to the effect of strongly acid and strongly alkaline baths, while being punchable and paintable. The coating according to the invention comprises epoxy resins characterized by ultimate elongation higher than 10%, electrical insulation resistance less than 2000 Ohm/cm.sup.2, able to produce a continuous coating on the metal substrate with micro-roughnesses (Ra) of about 3 .mu.m--Ra being average roughness--and capable of withstanding for thirty minutes liquids with pH between 2 and 12.5.
    Type: Grant
    Filed: May 18, 1989
    Date of Patent: December 3, 1991
    Assignee: Centro Sviluppo Materiale SpA
    Inventors: Ferdinando Colaiacovo, Domenico Derchi, Massimo Memmi
  • Patent number: 5061571
    Abstract: A biaxially oriented polyester film containing 0.01 to 4 wt %, based on the polyester film, of inorganic particles, the volumetric shape parameter being 0.02 to 0.2, the weight-average particle size being 0.05 to 3 .mu.m, and the ratio (Dw/Dn) of the weight-average particle size (Dw) and the number-average particle size (Dn) being not more than 1.1 is disclosed. The film of the present invention has a uniform surface and shows excellent running property and wear resistance so that it is useful as a base film for a magnetic tape, for example. Thus, the film of the present invention has a high industrial value.
    Type: Grant
    Filed: December 7, 1990
    Date of Patent: October 29, 1991
    Assignee: Diafoil Company, Limited
    Inventor: Seiji Sakamoto