Patents Examined by Anthony Green
  • Patent number: 6432187
    Abstract: A friction material characterized as containing, as a friction control agent, 3-50% by weight of one or more substances selected from flat layered titanates represented by the general formula (1), AxMyTi2−yO4 (wherein A represents an alkaline metal other than lithium; M represents one or more elements selected from lithium, magnesium, zinc, nickel, copper, iron, aluminum, gallium and manganese; x is a number of 0.5-1.0; and y is a number of 0.25-1.0) and flat layered titanic acids represented by the general formula (2), Hx(M′y)zTi2−yO4.nH2O (wherein M′ represents one or more elements selected from lithium, magnesium, zinc, nickel, copper, iron, aluminum, gallium and manganese; x is a number of 0.5-1.0; y is a number of 0.25-1.0; z is a number of 0 or 1; and n is a number of 0≦n≦2).
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: August 13, 2002
    Assignee: Otsuka Chemical Co., Ltd.
    Inventors: Hiroshi Ogawa, Minoru Takenaka
  • Patent number: 6432192
    Abstract: A pigment is synthesized in an aqueous medium and the pigment dispersion is purified by ultrafiltration or microfiltration. In particular, an aqueous pigment dispersion having a very small average particle size and a narrow particle size distribution may be prepared by the steps of (a) synthesizing a pigment in an aqueous medium and (b) removing an impurity such as a dissolved synthesis by-product or unreacted starting material through cross flow filtration using a membrane having an average pore diameter of from about 3 nanometers to about 3000 nanometers to produce a purified aqueous pigment dispersion.
    Type: Grant
    Filed: February 23, 2000
    Date of Patent: August 13, 2002
    Assignee: Flint Ink Corporation
    Inventors: Wayne L. Cook, Douglas P. Gebler, Norman E. Pratt
  • Patent number: 6432320
    Abstract: An additive suited to use in combination with heat transfer media comprises a chemically stabilized nano-particle size powder. Suitable powders include those of copper, beryllium, titanium, nickel, iron, alloys or blends thereof, and carbon. The surface of the powder is modified by surface complexation or physical adsorption with a chemical agent. The additive, when mixed with a heat transfer medium, forms a colloidal dispersion which exhibits enhanced heat transfer capacity and thermal conductivity, stable chemical composition, faster heat transfer rates, dispersion maintenance which are beneficial to most heat transfer systems.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: August 13, 2002
    Inventors: Patrick Bonsignore, Michael H. Gurin
  • Patent number: 6425947
    Abstract: The invention relates to compositions for the application of coatings primarily to wood and metal structures and installations, which have high fireproofing and thermal insulation properties, and can be used in construction, the aircraft industry, rail transport and shipbuilding. The composition includes a foaming system, which itself includes pentaerythritol or sorbitol, ammonium polyphosphate, boric acid, urea, filler and pigment, and also resin as a binder.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: July 30, 2002
    Assignee: Isle Firestop Limited
    Inventors: Alexandr A. Berlin, Nikolai A. Khalturinsky, Tatyana A. Rudakova, Jury M. Evtushenko
  • Patent number: 6423126
    Abstract: There is provided an anticorrosive composition for a memory unit bearing so as to control outgas generation which would cause magnetic head crushing or memory error. The anticorrosive composition for a memory unit bearing contains a carbonic ester represented by the following formula: wherein R and R′ are branched alkyl groups of 13 to 15 carbon atoms and may either be the same or different.
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: July 23, 2002
    Assignee: Minebea Co., Ltd.
    Inventor: Motoharu Akiyama
  • Patent number: 6419735
    Abstract: The composition is based on a samarium sesquisulphide, it exhibits a samarium purity with respect to other rare earth metals of greater than 99% and it comprises at least one alkali metal or alkaline earth metal element, at least a portion of which is included in the crystal lattice of the said sesquisulphide. According to another embodiment, the composition is based on a sesquisulphide of samarium and of at least one rare earth metal which is solely trivalent and it comprises at least one alkali metal or alkaline earth metal element, at least a portion of which is included in the crystal lattice of the said sesquisulphide. According to a third embodiment, the composition exhibits a samarium purity such that the cerium content is less than 1%. The process consists in reacting samarium, trivalent rare earth metal and alkali metal or alkaline earth metal compounds with a gaseous mixture of hydrogen sulphide and of carbon disulphide.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: July 16, 2002
    Assignee: Rhodia Chimie
    Inventors: Sylvain Busnot, Pierre Macaudiere
  • Patent number: 6419741
    Abstract: The present invention relates to an improvement in cement for use in concrete of high strength and high flowability, mass concrete, shrinkage compensating concrete or concrete of high resistibility which are employed in the field of engineering and architecture or as building material through incremental launching method or wet formation. When the ratio of Al2O3 to Fe2O3 is regulated to a value of 0.05 to 0.62, the strength of concrete of high strength and high flowability can further be improved, and heat of hydration can be prevented, while improving the flowability of cement and maintaining a long-term strength thereof.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: July 16, 2002
    Assignee: Sumitomo Osaka Cement Co., Ltd.
    Inventors: Tatsuo Ikabata, Seiichi Nagaoka, Takanori Yamamoto, Tatsushi Akiyama, Ayaji Yasumoto
  • Patent number: 6413309
    Abstract: Pigment preparations comprising a) at least one organic base pigment, b1) at least one perylene pigment dispersant of the formula (I)  and b2) at least one acidic, carboxyl- or sulfo-containing perylene pigment dispersant have advantageous rheological and coloristic properties.
    Type: Grant
    Filed: January 25, 2000
    Date of Patent: July 2, 2002
    Assignee: Clariant GmbH
    Inventors: Joachim Weber, Manfred Urban, Manfred Opravil, Erwin Dietz
  • Patent number: 6413444
    Abstract: A phase change particulate saline slurry and methods and apparatus are provided for producing phase change particulate saline slurries. One method for producing phase change particulate saline slurries includes the steps of providing a liquid with a set percentage freezing point depressant, such as, a set percentage saline solution; subcooling the saline solution to a freezing point to produce ice particles; and increasing an ice particle concentration under controlled temperature for a period of time to provide a set ice particle concentration for the phase change particulate saline slurry. In another method for producing phase change particulate saline slurries, water and a first set amount of sodium chloride are provided to produce a saline solution. The saline solution is cooled to a set temperature. A selected percentage of chunk ice is added to the saline solution and the chunk ice is broken into ice particles. The ice particles have a small size.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: July 2, 2002
    Assignee: The University of Chicago
    Inventor: Kenneth E. Kasza
  • Patent number: 6413445
    Abstract: A description is given of antifreeze concentrates which comprise a) at least one water-miscible alcohol which lowers the freezing point; b) at least one corrosion inhibitor; and c) as reserve alkalinity donor, at least one mono- or polycyclic aromatic compound which has at least one hydroxyl group and a high buffer capacity in the pH range from about 6 to 10 and of coolant compositions which comprise said concentrates and are intended for the cooling circuits in internal combustion engines.
    Type: Grant
    Filed: January 9, 2001
    Date of Patent: July 2, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Knut Oppenländer, Wolfgang Günther, Klaus Pfitzner, Michael Gillich, Ladislaus Meszaros
  • Patent number: 6409816
    Abstract: Pigment preparations comprise a) at least one diketopyrrolopyrrole pigment, and b) at least one perylene pigment dispersant of the formula (I)  and have advantageous rheological and coloristic properties.
    Type: Grant
    Filed: February 16, 2000
    Date of Patent: June 25, 2002
    Assignee: Clariant GmbH
    Inventors: Joachim Weber, Erwin Dietz
  • Patent number: 6409809
    Abstract: A method for preventing the fading of pigmented coatings, especially water based acrylic paints, includes incorporating therein a biocide containing a mixture of from about 1% to about 99% by weight of a halogenated benzonitrile compound and from about 1% to about 99% by weight of a conazole compound.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: June 25, 2002
    Assignee: Cognis Corporation
    Inventors: Kenneth Breindel, Samuel A. Firman
  • Patent number: 6409821
    Abstract: The invention provides a hydraulic binder, dry premixes and cement compositions having the improved property of maintaining unaltered, brilliance and coloring quantity for a longer time period. These compositions contain, in bulk, particles of a photocatalyst capable of oxidizing polluting substances in the environment in the presence of light, oxygen and water.
    Type: Grant
    Filed: February 3, 1999
    Date of Patent: June 25, 2002
    Assignee: Italcementi S.p.A.
    Inventors: Luigi Cassar, Carmine Pepe
  • Patent number: 6402825
    Abstract: The invention provides a surface modified carbon black and method for production. The surface modified carbon black is produced by reacting self-dispersing or oxidized carbon with a steric inducing compound via an organic acid halide intermediary. The steric inducing compounds are substantially soluble in the organic components of an ink composition and are reactive with an organic acid halide. Electrostatic and steric stability are provided by the surface modified carbon black. The surface modified carbon black exhibits solubility in aqueous and organic media and exhibits excellent resistance to coagulation within an ink jet printhead.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: June 11, 2002
    Assignee: Lexmark International, Inc
    Inventor: Jing X Sun
  • Patent number: 6402828
    Abstract: Pigment composition which comprises azo pigments and auxochromes. The composition is prepared in-situ by coupling an aromatic diazonium compound with 3-hydroxy-2-naphthoic acid and can be produced in a fixed quality with excellent reproducibility, transparency, a high color strength, clear and vivid hue and good water resistance.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: June 11, 2002
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Greig Chisholm, Paul Kerwin, Mairi Nicol
  • Patent number: 6402976
    Abstract: A textile finish composition containing: (a) an esterquat; and (b) a quatemized fatty acid imidazoline.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: June 11, 2002
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Bernd Wahle, Guenter Uphues, Yvonne Reichert, Rafael Pi Subirana, Terese Copete Vidal
  • Patent number: 6402829
    Abstract: An improved process for producing a substantially pure gamma phase a quinacridone pigment or pigment derivative involving preparing an aqueous slurry of a crude quinacridone in the presence of caustic alkali and a non-polar, water immiscible solvent; and heating said slurry at a temperature above about 120° C.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: June 11, 2002
    Assignee: Sun Chemical Corporation
    Inventors: Edward H. Sung, George H. Robertson, Humberto Velasquez
  • Patent number: 6402982
    Abstract: A phase change composition is provided which includes a nucleating agent to reduce supercooling of the composition. The phase change composition may comprise a eutectic mixture of water and sodium chloride. The nucleating agent may comprise calcium oxide, calcium hydroxide, or pentaerythritol. The phase change composition may also include silica particles such that it is provided in the form of a gel or powder. The phase change composition may be used in a variety of applications including thermal shipping containers.
    Type: Grant
    Filed: April 2, 2001
    Date of Patent: June 11, 2002
    Assignee: Energy Storage Technologies Inc.
    Inventor: Ival O. Salyer
  • Patent number: 6398865
    Abstract: A cement composition comprising (A) hydraulic cement, (B) a silicone oil emulsion containing crosslinked silicone particles with an average particle size of from 0.05 &mgr;m to 100 &mgr;m in drops of silicone oil with an average size of 0.1 &mgr;m to 500 &mgr;m dispersed in water, the particle size of the crosslinked silicone particles being smaller than the size of the silicone oil drops, in an amount such that the total weight of the silicone oil and crosslinked silicone particles in component (B) ranges from 0.1 parts by weight to 50 parts by weight per 100 parts by weight of component (A), and optionally (C) aggregate.
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: June 4, 2002
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Yoshitsugu Morita, Masahiko Uomori, Kazuo Kobayashi
  • Patent number: 6398979
    Abstract: A liquid deicer composition suitable for use as a deicer or as a pre-coat for solid deicers is disclosed. The composition typically includes molasses solids, magnesium chloride, and a corrosion inhibitor. In one implementation the liquid deicer composition includes molasses solids; magnesium chloride, and a corrosion inhibitor.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: June 4, 2002
    Assignee: Cargill, Incorporated
    Inventors: Robert Scott Koefod, Richard Hunt Rose, III