Patents Examined by H. Thi Lê
  • Inorganic dopants, inks and related nanotechnology
    Patent number: 6849109
    Abstract: Ink compositions with modified properties result from using a powder size below 100 nanometers. Colored inks are illustrated. Nanoscale coated, uncoated, whisker inorganic fillers are included. The pigment nanopowders taught comprise one or more elements from the group actinium, aluminum, antimony, arsenic, barium, beryllium, bismuth, cadmuim, calcium, cerium, cesium, chalcogenide, cobalt, copper, dysprosium, erbium, europium, gadolinium, gallium, gold, hafnium, hydrogen, indium, iridium, iron, lanthanum, lithium, magnesium, manganese, mendelevium, mercury, molybdenum, neodymium, neptunium, nickel, niobium, nitrogen, oxygen, osmium, palladium, platinum, potassium, praseodymium, promethium, protactinium, rhenium, rubidium, scandium, silver, sodium, strontium, tantalum, terbium, thallium, thorium, tin, titanium, tungsten, vanadium, ytterbium, yttrium, zinc, and zirconium.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: February 1, 2005
    Assignee: NanoProducts Corporation
    Inventors: Tapesh Yadav, John Alexander
  • Black iron-based particles and black toner containing the same
    Patent number: 6844067
    Abstract: Black iron-based particles comprise a FeTiO3—Fe2O3 solid solution or a mixed composition of a FeTiO3—Fe2O3 solid solution and an iron-based oxide having a spinel structure, and having a Ti content of from more than 10.0 atm % to 40.0 atm %, calculated as Ti, based on whole Fe, and a blackness (L* value) of 6 to 13.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: January 18, 2005
    Assignee: Toda Kogyo Corporation
    Inventors: Nobuya Shimo, Koso Aoki, Hiromitsu Sakurai, Shinji Uemoto
  • Nitric oxide-releasing polymers incorporating diazeniumdiolated silane derivatives
    Patent number: 6841166
    Abstract: Biocompatible polymeric materials capable of providing in situ release of nitric oxide (NO) included diazeniumdiolated fumed silica as a filler in a multilayer polymer structure to release NO upon contact with water (blood). The blood-contacting polymer surface is preferably multi-layered so that the NO-releasing layer, containing the diazeniumdiolated fumed silica, is shielded from blood contact by one or more top (or base) coats. When in contact with blood, the NO released at the surface of the polymer prevents platelet activation and adhesion to the surface, thereby reducing platelet consumption, risk of thrombus formation and other clinical complications associated with interactions between blood and foreign materials.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: January 11, 2005
    Assignee: The Regents of the University of Michigan
    Inventors: Huiping Zhang, Mark E. Meyerhoff
  • Low pigments costs algae-retardant roofing granule products containing metallic copper
    Patent number: 6838152
    Abstract: Algae-resistant roofing granules consisting of one or two coats of a fired semi-ceramic composition having a metallic copper powder which does not significantly affect the color tint strength of the pigment contained in the coatings.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: January 4, 2005
    Assignee: ISP Investments Inc.
    Inventor: Ingo B. Joedicke
  • Organic/inorganic-oxide multilayer materials
    Patent number: 6838198
    Abstract: The present invention relates to novel organic/inorganic-oxide multilayer materials. In particular novel organic/inorganic-oxide materials based on single or multiple atomic layers of tungsten oxide, molybdenum oxide or other metal oxides interspersed between organic spacer layers is disclosed along with a method of preparing the materials, preferably via self assembly.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: January 4, 2005
    Assignee: Industrial Research Limited
    Inventor: Jeffery Tallon
  • Nanostructured titania coated titanium
    Patent number: 6835449
    Abstract: A ball valve for use in the pressure acid leaching of nickel ores is disclosed. The valve has a valve body and a ball centrally positioned in the valve body, which has a central passage rotatable in the valve body between open and closed positions. At least one seat is disposed between the ball and the valve body. The ball and seat each comprise a titanium substrate and an ultrafine or nanostructured titania coating. The titania can include from 5 to 45 volume percent of a second phase material that is immiscible with the titania and exhibits corrosion resistance.
    Type: Grant
    Filed: August 5, 2002
    Date of Patent: December 28, 2004
    Assignee: Mogas Industries, Inc.
    Inventors: George E. Kim, Jimmy Walker, Jr., John B. Williams, Jr.
  • Ultrafine particulate complex oxide containing titanium oxide
    Patent number: 6835455
    Abstract: The present invention provides a process for producing ultrafine particulate complex oxide containing titanium oxide, including vapor-phase producing a complex oxide containing titanium oxide having a BET specific surface area of about 5 to about 200 m2/g, where a starting material gas containing titanium tetrachloride and an oxidizing gas are preheated to about 700° C. or more, and are reacted with a solution or a slurry of a salt containing a metallic element. The present invention also provides an ultrafine particulate complex oxide containing titanium oxide obtained by the process, and use of the oxide.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: December 28, 2004
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Jun Tanaka, Shinichiro Tomikawa
  • Encapsulation of crystals via multilayer coatings
    Patent number: 6833192
    Abstract: The invention refers to a new process for preparing coated crystals by coating crystal template particles with alternating layers of oppositely charged polyelectrolytes and/or nanoparticles.
    Type: Grant
    Filed: March 25, 2002
    Date of Patent: December 21, 2004
    Assignee: Max-Planck Gesellschaft Zur Forderrung der Wissenschaften E.V.
    Inventors: Frank Caruso, Dieter Trau, Helmuth Möhwald, Reinhard Renneberg
  • Recycled rubber products
    Patent number: 6821623
    Abstract: Recycled rubber products are made in a two step process. In the first step, ground rubber is treated with a polyurethane binder to make a treated rubber. In the second step, the treated rubber is mixed with additional polyurethane binder and molded into finished products. This method uses less polyurethane binder than the conventional process, but the products have higher tensile strengths. The molding time is also reduced because of the reduced amount of polyurethane binder used.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: November 23, 2004
    Assignee: Ryvec, Inc.
    Inventor: Peter Kvesic
  • Metal non-oxide coated nano substrates
    Patent number: 6821615
    Abstract: Metal non-oxide coated substrates are disclosed comprising a three dimensional inorganic nano substrate having a coating of metal non-oxide on at least a portion of all three dimensions thereof, produced by a unique process having particular applicability to the manufacture of metal boride, carbide and nitride coated three dimensional substrates. Certain novel coated substrates, such as flakes and layered substrates are disclosed. The coated substrates are useful in polymers and shielding applications.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: November 23, 2004
    Assignee: Ensci Inc.
    Inventor: Thomas J. Clough
  • Preparation of nanocrystallites
    Patent number: 6821337
    Abstract: A method of manufacturing a nanocrystallite from a M-containing salt forms a nanocrystallite. The nanocrystallite can be a member of a population of nanocrystallites having a narrow size distribution and can include one or more semiconductor materials. Semiconducting nanocrystallites can photoluminesce and can have high emission quantum efficiencies.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: November 23, 2004
    Assignee: Massachusetts Institute of Technology
    Inventors: Moungi Bawendi, Nathan E. Stott
  • Multi-layered magnetic pigments and foils
    Patent number: 6818299
    Abstract: Multilayered magnetic pigment flakes and foils are provided. The pigment flakes can have a symmetrical coating structure on opposing sides of a magnetic core, or can be formed with encapsulating coatings around the magnetic core. The magnetic core can be a magnetic layer between reflector or dielectric layers, a dielectric layer between magnetic layers, or only a magnetic layer. Some embodiments of the pigment flakes and foils exhibit a discrete color shift so as to have distinct colors at differing angles of incident light or viewing. The pigment flakes can be interspersed into liquid media such as paints or inks to produce colorant compositions for subsequent application to objects or papers. The foils can be laminated to various objects or can be formed on a carrier substrate.
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: November 16, 2004
    Assignee: Flex Products, Inc.
    Inventors: Roger W. Phillips, Charlotte R. LaGallee, Charles T. Markantes, Paul G. Coombs
  • Composite material containing tungsten, tin and organic additive
    Patent number: 6815066
    Abstract: A composite material for use as a lead replacement, comprising a high density metal such as tungsten (W), a lower density metal such as tin (Sn) and an organic additive is disclosed. Also disclosed are processes for forming such composites. The composite is particularly useful in ammunition.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: November 9, 2004
    Inventor: Kenneth H. Elliott
  • Luminescent nanoparticles and methods for their preparation
    Patent number: 6815064
    Abstract: Methods for synthesizing luminescent nanoparticles and nanoparticles prepared by such methods are provided. The nanoparticles are prepared by a method in which an additive is included in the reaction mixture. The additive may be a Group 2 element, a Group 12 element, a Group 13 element, a Group 14 element, a Group 15 clement, or a Group 16 element. In additions, a luminescent nanoparticle is provided that comprises a semiconductive core surrounded by an inorganic shell, an interfacial region and an additive present in the interfacial region or both the interfacial region and the shell.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: November 9, 2004
    Assignee: Quantum Dot Corporation
    Inventors: Joseph A. Treadway, Donald A. Zehnder, Marc D. Schrier
  • All-dielectric optical diffractive pigments
    Patent number: 6815065
    Abstract: All-dielectric diffractive pigment flakes can be applied to an object to impart a diffractive effect to the object without substantially changing the background color of the object. In one case, such diffractive pigment flakes can be applied to a white object to impart a white diffractive effect. The thickness of the dielectric layers in the diffractive pigment flakes can be chosen to provide thin-film interference, as well as diffraction from the interfaces between layers patterned with a diffraction grating. In some cases, the thin-film interference can provide color shifting in addition to the diffractive effect.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: November 9, 2004
    Assignee: Flex Products, Inc.
    Inventors: Alberto Argoitia, Vladimir P. Raksha, Paul T. Kohlmann
  • Metal oxyanion coated nano substrates
    Patent number: 6811881
    Abstract: Metal oxyanion coated substrates are disclosed comprising a three dimensional inorganic nano substrate having a coating of metal oxyanion on at least a portion of all three dimensions thereof, produced by a unique process having particular applicability to the manufacture of metal oxysulfide, oxycarbide and oxynitride coated three dimensional substrates. Certain novel coated substrates, such as flakes and layered substrates are disclosed. The coated substrates are useful in polymers and shielding applications.
    Type: Grant
    Filed: April 7, 2003
    Date of Patent: November 2, 2004
    Assignee: Ensci Inc.
    Inventor: Thomas J. Clough
  • Metal oxyanion coated substrates
    Patent number: 6811880
    Abstract: Layered metal oxyanion coated substrates are disclosed comprising a three dimensional inorganic substrate having a coating of metal oxyanion derived from a pre-associated coating on at least a portion of all three dimensions thereof, produced by a unique process having particular applicability to the manufacture of metal oxysulfide, oxycarbide and oxynitride coated three dimensional substrates. Certain novel coated substrates, such as flakes, spheres and porous substrate are disclosed. The coated substrates are useful in polymer catalysis, heat dissipation and shielding applications.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: November 2, 2004
    Assignee: Ensci Inc.
    Inventor: Thomas J. Clough
  • Method of producing iron oxide pellets
    Patent number: 6811759
    Abstract: A method for producing an iron oxide pellet including the steps of adding water to a raw material mixture comprising iron oxide which serves as a primary component, a carbonaceous material in an amount sufficient for reducing the iron oxide, an organic binder in an amount sufficient for binding the iron oxide and the carbonaceous material, and an inorganic coagulant in an amount of not less than 0.05 mass % and less than 1 mass %; pelletizing the resultant mixture to thereby obtain a green pellet; and drying the green pellet until the moisture content is reduced to equal to or less than 1.0 mass %. The thus-produced iron oxide pellet is charged in a reducing furnace for reduction to thereby obtain a reduced iron pellet.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: November 2, 2004
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Osamu Tsuchiya, Hidetoshi Tanaka, Takao Harada, Jun Jimbo, Shoichi Kikuchi, Yasuhiko Igawa
  • Porous, fine inorganic particles
    Patent number: 6808768
    Abstract: The present invention provides an amorphous porous inorganic substance having small particle sizes and uniform pores, a process for synthesizing the same, and use of the same. The invention provides an amorphous porous inorganic substance having pores of a uniform pore diameter, which has an average particle size DL of 10 to 400 nm as measured by a dynamic light scattering method and a specific surface area difference, SB−SL, between a conversion specific surface area SL calculated from DL and a nitrogen adsorption specific surface area SB obtained by the BET method, of 250 m2/g or more. A process for synthesizing the same and use of the same are also disclosed.
    Type: Grant
    Filed: December 26, 2002
    Date of Patent: October 26, 2004
    Assignee: Asani Kasei Kabushiki Kaisha
    Inventors: Seiji Satou, Yasuhide Isobe, Kenzou Onizuka
  • Method for producing fillers having improved bulk material stability and pourability
    Patent number: 6808809
    Abstract: Disclosed is a method for producing surface-modified fillers by spray-drying an aqueous suspension of a filler that consists of fine particles, whereby 0.1 to 50 wt. % (calculated as dry substance), preferably 0.3 up to less than 1 wt %, of an aqueous dispersion of a thermoplastic polymer or copolymer or a caoutchouc are added. Said fillers have improved bulk material stability and improved pourability. The inventive fillers are particularly suitable as flame-retardant fillers for synthetic materials or rubber, in a cable insulation for instance.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: October 26, 2004
    Assignee: Albemarle Corporation
    Inventors: René Herbiet, Mario Neuenhaus