Patents Examined by Margaret Medley
  • Patent number: 6750182
    Abstract: Ester based industrial oils containing acid scavengers exhibit improved sludge performance when a minor amount of hydrocarbon oil is included in the formulation.
    Type: Grant
    Filed: October 9, 1998
    Date of Patent: June 15, 2004
    Assignee: ExxonMobil Research and Engineering Company
    Inventor: Todd Timothy Nadasdi
  • Patent number: 6734147
    Abstract: A process is disclosed for manufacturing a lubricant composition comprising combining a superabsorbent polymer with a material for decreasing friction between moving surfaces. The superabsorbent polymer absorbs from about 25 to greater than 100 times its weight in water and may comprise a polymer of acrylic acid, an acrylic ester, acrylonitrile or acrylamide, including co-polymers thereof or starch graft co-polymers thereof or mixtures thereof. A product produced by the process includes the material for decreasing friction comprising a petroleum lubricant containing an additive, water containing an additive, synthetic lubricant, grease, solid lubricant or metal working lubricant, wherein the synthetic lubricant, grease, solid lubricant or metal working lubricant optionally contain an additive. A process comprising controlling the delivery of a lubricant to at least one of two moving surfaces in order to decrease friction between said moving surfaces, is also disclosed.
    Type: Grant
    Filed: October 3, 1997
    Date of Patent: May 11, 2004
    Assignee: LCC County Mosquito Control
    Inventor: Richard Levy
  • Patent number: 6719814
    Abstract: The invention provides a lubricity additive in the form of an ester of an acid and an alcohol, wherein the acid is an aromatic mono-, di- or polyhydric, mono-, di- or polycarboxylic acid or mixture thereof, which may be alkylated and/or alkoxylated and wherein the alkyl and/or alkoxy groups, if any, are independently selected from groups having from 1 to 30 carbon atoms, characterised in that (a) the alcohol is glycerol, and (b) the mole percent of acid groups in the lubricity additive is less than 10%, based on the total of acid and ester groups. The invention also provides a process for preparing the lubricity additive, and a middle distillate fuel oil having a sulphur concentration of 0.2% by weight or less, and a minor portion of the lubricity additive.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: April 13, 2004
    Assignee: Infineum International LTD
    Inventor: Jian Lin
  • Patent number: 6713438
    Abstract: High performance engine oils and other liquid lubricants comprise a liquid lubricant basestock of low viscosity from 1.5 to 12 cSt (100C) with two dissolved polymer components of differing molecular weights. The basestock is preferably a single PAO or blend of PAOs with a co-basestock component which is preferably an ester or an alkylated aromatic of comparable viscosity. The lower molecular weight polymer is highly viscoelastic in character and is preferably an HVI-PAO; this component in the lubricant which provides unexpectedly high film thickness and unexpectedly good wear protection under conditions where the second, higher molecular weight polymer may lose some or all of its thickening power. The use of the highly viscoelastic low molecular weight polymer in combination with the higher molecular weight thickener enables the production of very widely cross-graded engine oils, especially oils with a low temperature grading of 0W or better.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: March 30, 2004
    Assignee: Mobil Oil Corporation
    Inventors: David J. Baillargeon, Raymond J. Bergstra, Andrew Jackson, William L. Maxwell, G. James Johnston, Robert A. Pache
  • Patent number: 6713527
    Abstract: The invention relates to surgical bone cement compositions and more particularly to bone cement compositions having aneasthetic properties, and to methods for producing analgesia.
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: March 30, 2004
    Assignee: Queen's University at Kingston
    Inventors: David M. Bond, John F. Rudan, Michael A. Adams
  • Patent number: 6699298
    Abstract: Hindered amine compounds which are substituted by a long hydrocarbon chain are useful in a number of applications where the solubility or compatibility afforded by said substitution is needed. This is seen particularly for example with white, dyed, dipped, unscented and/or scented candle wax which is effectively stabilized against discoloration and fading by the incorporation therein of a long chain hindered amine alone or in combination with a UV absorber and/or an antioxidant.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: March 2, 2004
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Mervin G. Wood, Andrea R. Smith, James P. Galbo
  • Patent number: 6695975
    Abstract: The invention provides a suspo-emulsion formulation comprising defined first and second compatible components, the first component acting primarily as an oil emulsifier and secondarily as a particle dispersant, and the second component acting primarily as a particle dispersant and secondarily as an oil emulsifier. The invention enables the preparation of stable suspo-emulsions containing a variety of active ingredients and components and containing large quantities of oily components.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: February 24, 2004
    Assignee: Bayer Cropscience GmbH
    Inventors: Graham Kneebone, Smita Patel
  • Patent number: 6696392
    Abstract: Dry film lubricant coatings are provided by using a silicone resin binder, either as an aqueous emulsion or in a solvent-based system, to fix an alkaline earth metal fluoride to a substrate. The compositions used to apply the coatings may also include relatively minor amounts of xylene, ammonium benzoate, a wetting agent, and/or a porosity-inducing agent—although none of those additives remains in the cured coating. Multi-layer dry film lubricant coatings are also disclosed, with the multi-layer coating having a basecoat layer as described above, and a topcoat layer made of a layer-lattice solid such as graphite or molybdenum disulfide, and a silicone resin, aluminum phosphate or an alkali metal silicate binder.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: February 24, 2004
    Assignee: Rolls-Royce Corporation
    Inventors: Subhash K. Naik, James M. Klotz, Michael J. Barber
  • Patent number: 6693064
    Abstract: The invention relates to compositions comprising an ester of a polyol and a mixture of fatty acids, wherein at least a part (I) the esterified fatty acids has a chain length of 5-12 carbon atoms and another part (II) of the esterified fatty acids has a chain length of 16-22 carbon atoms, and wherein the composition has a viscosity of 7000 mm2/s or less, when tested according to ASTM (D2531). Such compositions have unexpected good low temperature properties, in particular a good rheology after having been kept for a prolonged time at a low temperature (e.g. at −30° C.). These compositions are suitable for use as (part of) hydraulic fluid in applications at low temperatures.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: February 17, 2004
    Assignee: Unichema Chemie B.V.
    Inventors: Thomas Friedrich B√ľnemann, Arie Dick Kardol, Abraham Cornelis de Mooij
  • Patent number: 6689285
    Abstract: Fire-fighting equipment utilizes a fire-extinguishing aerosol that is formed during burning of pyrotechnical composite. A pyrotechnical, aerosol-forming fire-extinguishing composite is formed with good deformation strength characteristics, low fire-extinguishing concentration and regulated burning velocity. The pyrotechnical aerosol-forming fire-extinguishing composite contains an oxidizer, a production process additive and burning binder formed by thermoplastic formaldehyde and phenol polycondensate, plasticized by dicarboxylic acid ester and reinforced by polytetrafluoroethylene. The composite is produced by mixing of formaldehyde and phenol polycondensate suspension in an organic solvent and polytetrafluoroethylene dispersion in dicarboxylic acid ester, mixing the resulting composition with an oxidizer and a production process additive with subsequent thermomechanical effect.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: February 10, 2004
    Assignee: Techno-TM LLC
    Inventors: Dmitriy Leonidovich Rusin, Anatoliy Petrovich Denisyuk, Dmitriy Borisovich Michalev, Juriy Germanovich Shepelev
  • Patent number: 6676856
    Abstract: The invention provides for improvements in composition and methods for the preservation of cellulosic materials through use of solutions comprising organic multi-valent metal carbonates, C1-C4 alcohol having a moisture content of less than 100 ppm, and 86-99 weight percent of a solvent having a moisture content of less than 100 ppm.
    Type: Grant
    Filed: July 5, 2000
    Date of Patent: January 13, 2004
    Inventor: Richard Daniel Smith
  • Patent number: 6676920
    Abstract: Provided are magnesium hydroxide particles having a hexagonal crystal form and having an aspect ratio (H) which satisfies the following expression (I), 0.45·A·B<H<1.1·A·B  (I) (wherein H is an aspect ratio, A is an average secondary particle diameter (&mgr;m) of all of the particles measured by a laser diffraction scattering method and B is a specific surface area (m2/g) of all of the particles measured by a BET method), a flame-retardant comprising the particles, a flame-retardant resin composition comprising 100 parts by weight of a synthetic resin and a 5 to 300 parts by weight of the magnesium hydroxide particles, and a molded article therefrom. The magnesium hydroxide particles are hexagonal single crystals, the hexagonal form thereof are not necessarily required to be regular hexagonal, and the size thereof are not necessarily constant.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: January 13, 2004
    Assignee: Kyowa Chemical Industry Co., Ltd.
    Inventors: Shunji Oishi, Taro Ando, Makoto Yoshii, Wataru Hiraishi
  • Patent number: 6669874
    Abstract: A method for production of a nuclear fuel element with oxide base, in which the nuclear fuel with oxide base is mixed with Cr and sintered to a solid body. The amount of chrome oxide added is =>50 and <100 ppm with respect to the amount of nuclear fuel with oxide base added.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: December 30, 2003
    Assignee: Westinghouse Atom AB
    Inventors: Philippe Abry, Sten Borell, Sven Eriksson
  • Patent number: 6663680
    Abstract: A gas turbine is driven by combustion of a fuel which is a hydrocarbon oil-in-water emulsion. Successful operation is achieved with minimized corrosion of turbine blades by keeping the Na+ content of the emulsion to less than 1 ppm. Deionized water is generally to be used in making up the emulsion. Heavy oils can be used because their conversion to oil-in-water emulsion form makes them suited to the pre-atomization requirements of gas turbine combustion.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: December 16, 2003
    Assignee: Quadrise Limited
    Inventors: Peter Jeremy Dodd, Alan Stockwell
  • Patent number: 6664216
    Abstract: Lubricant compositions comprising biodegradable ester base stocks are provided for water-cooled or air-cooled two-cycle engines.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: December 16, 2003
    Assignee: Cognis Corporation
    Inventors: Stephen C. Lakes, Henry G. Stoeppel, II, Bruce J. Beimesch
  • Patent number: 6656888
    Abstract: Lubricant compositions comprising biodegradable ester base stocks are provided for water-cooled or air-cooled two-cycle engines. Grease compositions comprising biodegradable ester base stocks are provided for a wide variety of machinery including chain saws, truck chassis, and the rail, wheel flanges and switches on the railroads.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: December 2, 2003
    Assignee: Cognis Corporation
    Inventor: Eugene R. Zehler
  • Patent number: 6656238
    Abstract: A method for the manufacture of coal-based carbon foams from a coal particulate starting material that comprises blending from 1 to about 10% by weight of pitch with the coal particulate before foaming. Blends of coal-based particulate with 1 to about 10% by weight of pitch as well as coal-based carbon foams manufactured from such blends are also described.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: December 2, 2003
    Assignee: Touchstone Research Lab.
    Inventors: Darren Kenneth Rogers, Janusz Wladyslaw Plucinski
  • Patent number: 6656239
    Abstract: According to the present invention, carbon foams are produced largely in accordance with the methods described in U.S. patent application Ser. No. 09/902,828, but with starting materials that comprise from about 10 to about 90% by weight of ground petroleum pitch and from about 90 to about 10% by weight of bituminous coal particulate exhibiting a free swell index of from about 3.5 to about 5.0.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: December 2, 2003
    Assignee: Touchstone Research Lab.
    Inventors: Darren Kenneth Rogers, Janusz Wladyslaw Plucinski
  • Patent number: 6656235
    Abstract: A method for manufacturing silver containing candles includes preparing a candle composition containing main components of paraffin, hardening oil and stearic acid, and adding fine silver particles to the main components. A wick is prepared by soaking a multi-ply thread in a solution containing silver and drying the thread. The wick is fixed on a mold frame and the candle composition is poured into the mold frame. The silver particles are dispersed in the air by thermal convection during burning, so that the dispersed silver particles produce disinfecting and human-beneficial effects.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: December 2, 2003
    Inventor: Jung-O An
  • Patent number: 6656382
    Abstract: Minerals that reversibly fix ions, in particular NO3—, i.e. that can exchange one anion for another anion can be used as fertilizers and soil conditioners, as well as for the purification and treatment of water, particularly for the elimination of nitrate. The minerals used are preferably natural or synthetic mixed value metal-metal-hydroxyl salts, e.g. layered double hydroxides (LDHs) that contain exchangeable fixed anions in the intermediary layers. A method for producing anion-exchanging minerals, particularly suitable LDHs, and their use as fertilizers and soil conditioners and for the purification and treatment of water.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: December 2, 2003
    Assignee: Hydro Agri Deutschland GmbH
    Inventors: Hermann Kuhlmann, Paul Seward, Josef Christian Buhl, Kirstin Beavers, Manfred Schenk, Claus Bull