Patents Examined by David Brunsman
  • Silica-based coating film on substrate and coating solution therefor
    Patent number: 6875262
    Abstract: A silica-based coating film having a low dielectric constant not exceeding 2.5 can be formed on the surface of a substrate to serve as a planarizing layer or an interlayer insulating layer by coating the surface with a unique coating solution containing a hydrolysis-condensation product of a polyalkoxy silane compound such as tetraethoxy silane and monomethyl trimethoxy silane, which is formed by the hydrolysis of a polyalkoxy silane in the presence of a basic catalyst such as ammonia in an alcohol solvent in a relatively low concentration followed by replacement of the alcohol solvent with an aprotic polar solvent such as N-methyl pyrrolidone, followed by drying and baking at 350 to 800° C.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: April 5, 2005
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Tatsuhiko Shibuya, Yoshio Hagiwara
  • Process for sizing paper and sizing composition
    Patent number: 6869471
    Abstract: The present invention relates to a process for sizing paper comprising providing an aqueous suspension comprising cellulosic fibres, dewatering said aqueous suspension thereby forming a paper web, said process comprising adding to the cellulosic suspension an aqueous composition comprising aggregates comprising a sizing agent, the composition obtainable by mixing in any order prior to the addition to the aqueous suspension, (i) an aqueous solution comprising at least one coagulation agent, and (ii) an aqueous dispersion comprising a sizing agent, wherein the zeta potential of the composition is less than 20 mV. The invention also refers to an aqueous sizing composition.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: March 22, 2005
    Assignee: Akzo Nobel N.V.
    Inventors: Lars Ödberg, Rosa Mattsson, Pavol Barla
  • Reinforcing fibre material for bituminous aggregates, method for producing same and use
    Patent number: 6866712
    Abstract: A fibrous reinforcing material (1) is envisaged which is produced from glass filaments (2), advantageously consisting of fragments of glass yarns (3) or of chopped yarns, having a mean diameter of greater than five micrometers and a mean length of greater than six millimeters. The process comprises a selection step (4a, 4b) during which the glass yarns (3) consisting of filaments having a diameter greater than or equal to five micrometers and less than or equal to twenty-four micrometers are chosen, optionally a step (5) of mixing the selected yarns, and a milling step (6) during which the mixed yarns are chopped into filaments (2) having a length of greater than or equal to six millimeters. Advantageously, the fibrous material is in the form of flakes.
    Type: Grant
    Filed: April 12, 2000
    Date of Patent: March 15, 2005
    Assignee: Saint-Gobain Vetrotex France S.A.
    Inventors: Francesco Rossi, Antonio Ferrante
  • Sulfur additives for paving binders and manufacturing methods
    Patent number: 6863724
    Abstract: Sulfur, useable in as an additive to asphalt in the preparation of asphalt binders can be plasticized by addition of carbon and further treated with amyl acetate. This plasticized sulfur can be formed into solid particles and then added to asphalt as either a minority or majority component to create desired paving binder compositions. The solid plasticized sulfur has non-stick non-flow properties within a wide range of ambient temperatures, and it can be stored solid for subsequent use in paving applications.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: March 8, 2005
    Assignee: Shell Canada Limited
    Inventors: William R. Bailey, Norm D. Pugh
  • Process for depositing layers of zirconium oxide using soluble powders
    Patent number: 6860933
    Abstract: A sol-gel process for producing layers of zirconium oxide is described which comprises the following stages: (i) production of a soluble, zirconium-containing powder by: (a) reaction of a zirconium alcoholate of the general formula Zr(OR)4, in which the residues R are the same or different and represent straight-chain, branched or cyclic alkyl or alkenyl residues with 1 to 10 carbon atoms, which optionally exhibit one or more carbonyl and/or ester and/or carboxyl functions, with one or more polar compounds having complexing, chelating properties, (b) heating the solution, (c) mixing the solution with water, optionally in the presence of a catalyst, (d) concentrating the solution until a powder is obtained, (ii) dissolving the powder forming a sol, (iii) coating a substrate with the sol, and (iv) annealing the coated substrate.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: March 1, 2005
    Assignee: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung
    Inventors: Peer Löbmann, Walther Glaubitt, Dieter Sporn
  • Hydroxyethyl starch composition and use in paper products
    Patent number: 6855198
    Abstract: A hydroxyethyl starch composition including dent corn starch and waxy corn starch wherein a portion of at least one, and preferably both, of the dent corn starch and the waxy corn starch are hydroxyethyl starch. Also disclosed are paper products comprising a fibrous web having applied thereon the starch compositions.
    Type: Grant
    Filed: August 7, 2003
    Date of Patent: February 15, 2005
    Assignee: Cargill, Incorporated
    Inventors: Kevin R. Anderson, David E. Garlie
  • Dielectric ceramic
    Patent number: 6852655
    Abstract: The invention is to offer such a dielectric ceramic enabling to simultaneously sinter with the low resistant conductor of Ag based metals and Cu based metals, having the excellent mechanical strength and exhibiting the excellent dielectric characteristics in the GHz zone. Mixed powders of Si: 20 to 30 weight %, B: 5 to 30 weight %, Al: 20 to 30 weight %, Ca: 10 to 20 weight %, and Zn: 10 to 20 weight % are prepared, melted, and rapidly cooled to produce glass frits. The glass frits are granulated and mixed with gahnite filler and titania filler which are inorganic filler powders. Subsequently, a binder is thrown into the powders to produce a composition of dielectric ceramic, and then is formed, followed by sintering. The mixed powders may contain at least one kind of alkali metal of Li, K and Na.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: February 8, 2005
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Eiji Kodera, Kazuyuki Fujii, Makoto Baba, Hidetoshi Mizutani, Manabu Sato
  • Dispersion comprising silicon/titanium mixed oxide powder, and green bodies and shaped glass articles produced therefrom
    Patent number: 6849114
    Abstract: Aqueous dispersion comprising silicon/titanium mixed oxide powder with a BET surface area of 5 to 500 m2/g which has been prepared by flame hydrolysis and has a titanium dioxide content of 0.5 to 20 wt. %, based on the powder, water and at least one pH-regulating substance which can be removed completely from the reaction mixture on heating, the aqueous dispersion having a solids content of between 40 and 80 wt. %. A green body produced therefrom with a green density of between 40 and 85%. A shaped glass article of optical quality with a coefficient of thermal expansion of not more than 0.5×10?6/K produced from the green body.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: February 1, 2005
    Assignee: Degussa AG
    Inventors: Monika Oswald, Klaus Deller, Helmut Mangold, Gerrit Schneider, Rolf Clasen, Markus Hornfeck
  • Process and system for production of a warm foam mix asphalt composition
    Patent number: 6846354
    Abstract: The invention describes a process for preparing a warm mix asphalt composition by mixing an aggregate grain material with a soft binder, and adding a hard binder to the mixed aggregate grain material. The hard binder is foamed in a foaming process before it is introduced to the mixed grained aggregate material. A system for preparing the warm mix asphalt composition comprising a drying drum for heating and drying the aggregate component, a mixing mill for mixing the asphalt components and a mix storage silo, where the system also includes foam production facilities for foaming the hard binder before introduction to the mixing mill, is also disclosed.
    Type: Grant
    Filed: December 1, 2003
    Date of Patent: January 25, 2005
    Assignee: Kolo Veidekke A.S.
    Inventors: Olle R. Larsen, Carl . Robertus
  • Road paving material and method
    Patent number: 6846355
    Abstract: A road paving material includes an aggregate, asphalt, and fine ceramic particles selected from the group consisting of RBC particles, CRBC particles, and mixtures thereof.
    Type: Grant
    Filed: June 18, 2003
    Date of Patent: January 25, 2005
    Assignee: Minebea Co., Ltd.
    Inventors: Kazuo Hokkirigawa, Noriyuki Yoshimura, Jun Hirose
  • Refractory repair material batch
    Patent number: 6846763
    Abstract: A refractory repair batch material includes a refractory, in particular a basic resistor component in granule form and a binder system. The binder system contains at least one hard bitumen component in granule form, at least one ignitable metal powder and at least one combustible mineral oil.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: January 25, 2005
    Assignee: Refratechnik Holding GmbH
    Inventors: Helge Jansen, Heinrich Grosse Daldrup
  • Method for producing a ceramic silver niobium tantalate body
    Patent number: 6843956
    Abstract: A method of producing a ceramic object includes producing particles of a type A and a type B. Each particle has a dimension of at least 5 ?m and each type of particle includes a ceramic material that is based on a mixture of silver oxide, niobium oxide and tantalum oxide. The method includes producing a particle mixture by mixing the types of particles, producing a green compact by compressing the particle mixture, and sintering the green compact.
    Type: Grant
    Filed: August 14, 2001
    Date of Patent: January 18, 2005
    Assignee: Epcos AG
    Inventors: Matjaz Valant, Danilo Suvorov, Christian Hoffmann, Helmut Sommariva
  • Preventing flow through subterranean zones
    Patent number: 6843841
    Abstract: The present invention provides methods of preventing the flow of water or gas or both through a subterranean zone having a high temperature and a depth such that a long pumping time is required to place a sealing composition therein. The methods basically comprise the steps of preparing a polymeric sealing composition comprised of water, a cross-linking agent and a selected water-soluble polymer which reacts with the cross-linking agent and forms a sealing gel which is stable for a desired period of time at the temperature of the zone and has a pumping time before gelation in the presence of the cross-linking agent whereby the composition can be pumped to the depth of the zone and placed therein. Thereafter, the sealing composition is pumped into the zone and allowed to form a sealing gel therein.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: January 18, 2005
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Baireddy R. Reddy, Larry S. Eoff
  • Modeling composition and its use
    Patent number: 6837924
    Abstract: A modeling composition consisting of a wax-based and oil-based binder, a filler, and a coloring agent, wherein the filler is substantially a light filler comprised of hollow microbeads. The binder is comprised of solid wax, pasty wax, and a liquid component of a wax base, an oil base, or a wax and oil base. The binder is present in the modeling composition in an amount of 45 to 90% by weight. The modeling composition can be used as play dough for children or as a therapeutic composition in the medical field for training and rehabilitation.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: January 4, 2005
    Assignee: J. S. Staedtler GmbH & Co.
    Inventors: Johann Breindl, Heinrich Schnorrer, Josef Eichhammer, Josef Schuster, Heidi Hummel
  • Surface treatment for copper foil
    Patent number: 6835241
    Abstract: The present invention provides a surface treatment agent that endows a copper foil with excellent adhesion to insulating resins. The surface treatment agent of the present invention has as its active components an organosilicic compound expressed by a following General Formula (1) and/or an organosilicic compound expressed by a General Formula (2) and an olefin-based silane coupling agent. The surface treatment agent of the present invention provides particularly excellent adhesion between an insulating resin and a low-profile copper foil used for a high-frequency-adaptable substrate. In Formulas (1) and (2), R1 is a hydroxyl group or a C1 to C5 alkyl group, and R2 is a C1 to C10 alkylene group that may contain oxygen.
    Type: Grant
    Filed: May 1, 2003
    Date of Patent: December 28, 2004
    Assignee: Nikko Materials Co., Ltd.
    Inventors: Katsuyuki Tsuchida, Masashi Kumagai, Fumiaki Akase
  • Ceramic material and the production thereof
    Patent number: 6835684
    Abstract: A ceramic material with a sintering temperature below 1000° C. and a Perovskite Structure with the general stoichiometric composition A′1-x-yA″xB′1-a-bB″aB′″bO3 whereby A′=Y, La, Pr, Nd; A″=Mg, Ca, Sr, Ba; B′=Mn, Ti, V, Cr, Ni, Zn, Pb, Sb, W, Zr; B″=Co; B′″=Cu, Bl; O<x<=0.4; 0<=y<=0.1; 0.09<a<=0.6 and; 0.09<=b<=0.6.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: December 28, 2004
    Assignee: Forschungszentrum Julich GmbH
    Inventors: Frank Tietz, Wolfgand Jungen, Frank Meschke, Rajendra Nath Basu
  • Wax composition for construction board application
    Patent number: 6830614
    Abstract: Wax compositions suitable for use in making construction boards are prepared by blending a wax or oil having a low n-paraffin content with a wax having a higher n-paraffin content to provide a wax composition having at least 21 wt % of n-paraffins.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: December 14, 2004
    Assignee: ExxonMobile Research and Engineering Co.
    Inventors: Carl W. Hudson, Anthony P. Hennessy
  • Polishes and their use
    Patent number: 6830609
    Abstract: This invention relates to a furniture polish comprising a paraffin wax and a microcrystalline wax, preferably in combination wit beeswax and a silicon oil. An organic solvent and water are present, and there may additionally be a surfactant and, in aerosol can applications, a propellant. The polish gives good gloss without tendency to smearing and good resistance to water damage.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: December 14, 2004
    Assignee: Rocklin Benckiser (UK) Limited
    Inventors: David Bedford, Jean Anne Braithwaite
  • Method of manufacturing a sugar-inorganic hybrid composite
    Patent number: 6830613
    Abstract: A biodegradable sugar-inorganic hybrid composite comprising a sugar or a sugar derivative uniformly dispersed in a matrix of an inorganic oxide, of which degradation products are suitable for recycling use.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: December 14, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Chieko Mihara, Toyoko Kobayashi, Hiroyoshi Kishi, Toshihiko Takeda, Yoshihiko Kikuchi
  • Essentially lead free glass and a glass tube made therefrom
    Patent number: 6831026
    Abstract: The invention relates to an essentially lead free glass. The lead free glass is suitable for making glass tubes and glass tubes for electric lamps in particular. The essentially lead free glass is characterized by having the lead oxide of a lead glass replaced by 1.0-3.0% by weight of lithium oxide. The ultraviolet radiation absorption of the glass is improved for wavelengths shorter than 320 nm. by the presence of 0.1-0.3% by weight of cerium oxide (CeO2) and 0.05-0.15% by weight of titanium dioxide (TiO2). With such an essentially lead free glass the transmittance of visible radiation may also be improved.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: December 14, 2004
    Assignee: L. Electric Glass Co. Ltd.
    Inventor: Somchai Ovuthitham