Patents Examined by Mark L. Bell
  • Patent number: 6794326
    Abstract: A catalyst system for the polymerization of ethylene, comprising a particulate inorganic oxide supporting a chromium oxide being in a reduced oxidation state and a metallocene compound having the formula Cp2ZrR′R″, wherein each Cp, being equal or different, is an unsubstituted or substituted cyclopentadienyl compound, and R′ and R′, independent of each other, are selected from the group comprising alkyls having 1 to 6 carbon atoms, unsubstituted or substituted benzyl, and phenoxy substituted with alkyls having 1 to 6 carbon atoms; or R′ or R″ may be a halide.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: September 21, 2004
    Assignee: Borealis Technology Oy
    Inventors: Arild Follestad, Klaus-Joachim Jens, Richard Blom, Ivar Martin Dahl
  • Patent number: 6793720
    Abstract: A solid marking composition comprises a solid matrix containing at least one type of optically variable interference pigment flakes. The solid marking composition provides a document or article with a copy and counterfeit protection feature, and is preferably used in a writing instrument for applying hand-written anti-counterfeit markings and signatures.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: September 21, 2004
    Assignee: SICPA Holding S.A.
    Inventors: Edgar Müller, Olivier Rozumek
  • Patent number: 6793721
    Abstract: An invisible ink composition and a method to ensure document confidentiality. The invisible ink composition includes a carrier as a solvent; and at least one leuco dye evenly dispersing in the carrier. The invisible ink becomes visible while the leuco dye is combined with a weak acidic developer.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: September 21, 2004
    Assignee: Benq Corporation
    Inventors: Yu-Chang Shen, In-Shan Sir, Chia-Hsin Chien, Yu-Ting Lin
  • Patent number: 6794332
    Abstract: A shell impregnated catalyst of Pd—Au produced on a silica support by impregnating the support with aqueous solutions of palladium and gold salts or acids and thereafter precipitating water insoluble compounds of Pd and Au on the support with alkali metal silicate or hydroxide fixing agents, then drying the support which has precipitated compounds of Pd and Au on its surface and reducing the surface precipitated compounds of Pd and Au until substantially all of the Pd and Au contents are reduced to a free metal state, after which the catalyst precursor is impregnated with potassium acetate and then dried. Improvements in the catalyst are realized by certain factors in process and composition.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: September 21, 2004
    Assignee: Saudi Basic Industries Corporation
    Inventors: Alla Konstantin Khanmamedova, Binghui Li, Robin J. Bates, Yuangen Ken Yin
  • Patent number: 6790269
    Abstract: An ink for use in the ink-jet recording comprising a dye and/or a pigment and water as the indispensable components and a water-insoluble solid content of 1% or more of the whole quantity, the ink further comprising: a nonionic surfactant having polyethylene oxide groups and polypropylene oxide groups, which is a substance having the structure shown by the following structural formula 1; and a number x of the added polyethylene oxide groups and a number y of the added polypropylene oxide groups satisfy the relation that 0<x≦10, and the relation that x/2−1<y<x/3+2, where q and r are respectively the numbers of the methylene groups, and satisfy the relation that 9≦q+r≦11.
    Type: Grant
    Filed: April 28, 2003
    Date of Patent: September 14, 2004
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiromi Nakatsu, Masanori Kinomoto, Seita Suzuki, Takanori Kamoto, Kiyofumi Morimoto, Hiroaki Nakaya
  • Patent number: 6790267
    Abstract: Disclosed are colorant compounds of the formula wherein R is an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group, and wherein R can be joined to the phenyl moiety to form a ring, each R′, independently of the others, is a halogen atom, an alkyl group, an alkoxy group, a nitrile group, a nitro group, an amide group, or a sulfonamide group, z is an integer of 0, 1, 2, 3, or 4, n is an integer representing the number of carbon atoms in each repeat alkylene oxide unit, x is an integer representing the number of repeat alkylene oxide units, and A and B each, independently of the other, are hydrogen atoms, halogen atoms, tertiary amino groups, imine groups, ammonium groups, cyano groups, pyridine groups, pyridinium groups, ether groups, ester groups, amide groups, sulfate groups, sulfonate groups, sulfide groups, sulfoxide groups, phosphine groups, phosphonium groups, phosphate groups, nitrile groups, mercapto groups, nitro groups, sulfone groups, acyl groups, azo groups
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: September 14, 2004
    Assignee: Xerox Corporation
    Inventors: Jeffery H. Banning, Donald R. Titterington, Clifford R. King
  • Patent number: 6790808
    Abstract: In an exhaust gas purifying catalyst, an acid material with a high affinity with respect to an absorbing agent is dispersed and mixed in a catalyst layer, to which the absorbing agent is added, or a layer of the acid material is formed inside the catalyst layer in order to prevent the absorbing agent from moving from the catalyst layer into the carrier. This reduces the permeation of the absorbing agent added to the catalyst layer into a carrier, the evaporation and splash of the absorbing agent from the catalyst, and the deterioration in the durability and the exhaust gas purifying performance of the catalyst.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: September 14, 2004
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Hiroshi Tanada, Osamu Nakayama, Keisuke Tashiro, Kinichi Iwachido, Tetsuya Watanabe
  • Patent number: 6790804
    Abstract: A process of forming a polyolefin catalyst component includes contacting a metal compound of the formula MR2 with a diketone to form a metal bis(diketonate) having the formula M(OCRCR′CRO)2, wherein M is a Group IIA or Group VIIB metal, and wherein R and R′ are each hydrocarbyls or substituted hydrocarbyls having from 1 to 20 carbons atoms. Catalyst components, catalysts, polyolefin polymers, catalysts systems, and methods of preparing same are disclosed.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: September 14, 2004
    Assignee: Fina Technology, Inc.
    Inventors: Steven D. Gray, Tim J. Coffy, Edwar S. Shamshoum
  • Patent number: 6790268
    Abstract: The present invention is drawn to ink-jet ink compositions, methods, and systems for reducing satellite spotting around a printed image. Specifically, an aqueous ink-jet ink composition exhibiting a reduction in aerosol formation during printing, comprises an effective amount of an ink vehicle; an effective amount of at least one ink colorant; and from 5 to 200 ppm of a high molecular weight polysaccharide.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: September 14, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Shirley Lee, Grant A. Webster, Joe R. Pietrzyk, Farzaneh Barmaki
  • Patent number: 6790806
    Abstract: The core/jacket catalyst molding with a core made from an inorganic support material and with a jacket made from a catalytically active material can be prepared by coextruding an aqueous molding composition which comprises the support material or a precursor thereof, with an aqueous molding composition which comprises the catalytically active material or a precursor thereof, then drying the coextrudate, and then calcining the dried coextrudate.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: September 14, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Hesse, Rainer Anderlik, Hans-Gerhard Fritz, Jochen Hammer
  • Patent number: 6790805
    Abstract: The invention relates to a process for the in-situ preparation of alkylated single-site transition metal catalysts by contacting a precatalyst with an alkylating agent in the presence of one or more olefin monomers in the polymerization system. The precatalyst, which is produced prior to introducing into the polymerization system, is obtained by contacting a transition metal complex and boron-containing ionizing agent, optionally, with a support.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: September 14, 2004
    Assignee: Equistar Chemicals, LP
    Inventor: Shaotian Wang
  • Patent number: 6790266
    Abstract: An ink set for ink-jet recording comprises a yellow ink, a magenta ink, and a cyan ink. Changes of colors &Dgr;EY, &Dgr;EM, &Dgr;EC of the yellow ink, the magenta ink, and the cyan ink satisfy the following relationship when the yellow ink, the magenta ink, and the cyan ink are deposited on regular paper, followed by being irradiated with light having a wavelength of 300 nm to 400 nm and an illuminance of 100 W/m2 for 30 hours by using a xenon lamp: |&Dgr;EY−&Dgr;EM|≦5, |&Dgr;EM−&Dgr;EC|≦5, |&Dgr;EC−&Dgr;EY|≦5. The ink set is excellent in color balance after the fading.
    Type: Grant
    Filed: March 25, 2002
    Date of Patent: September 14, 2004
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Narumi Koga, Kazuma Goto, Naomichi Kobayashi, Michiko Aoyama, Shunichi Higashiyama, Masaya Fujioka
  • Patent number: 6786956
    Abstract: A ballpoint pen oil-based ink composition, comprising an ink having therein a mixture of at least one phosphoric acid ester having an acid number of 90 to 600 and at least one weakly cationic component selected from the group consisting of: a) imidazoline-type activator, b) polyoxyethylene alkylamine, c) polyoxyethylene alkylamide, and d) alkylalkanolamide.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: September 7, 2004
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventor: Shuji Ichikawa
  • Patent number: 6787500
    Abstract: Catalyst particles having a higher activity and capable of showing activities for a plurality of kinds of material are provided. The catalyst particles of the invention comprise base particles that consist of one kind of single material fine particles or two or more kinds of solid solution fine particles having primary particle diameters of a nanometer order, and a surface coating layer made of one or more kind of noble metal, or an oxide of noble metal, that covers at least a part of the surface of the base particles 1 to a thickness of one to thirty single atom layers.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: September 7, 2004
    Assignees: Denso Corporation
    Inventors: Miho Ito, Jun Hasegawa, Koichi Niihara, Tadachika Nakayama
  • Patent number: 6786959
    Abstract: A pigment dispersion including a pigment; a dispersant; and a dispersion medium including water, wherein the pigment is dispersed in the dispersion medium, wherein the average particle diameter D50 of the pigment is not greater than 50 nm and the standard deviation of the pigment particle diameter distribution thereof is less than the average particle diameter D50. An inkjet ink including the pigment dispersion and at least one of water, a water-soluble organic solvent and a surfactant. A method and apparatus for forming an image using the inkjet ink. An image produced by the image forming method and apparatus.
    Type: Grant
    Filed: April 18, 2003
    Date of Patent: September 7, 2004
    Assignee: Ricoh Company Limited
    Inventors: Minoru Hakiri, Keishi Taniguchi, Shin Hasegawa
  • Patent number: 6786958
    Abstract: Provided is an oil based ink for a ball-point pen comprising at least an alcohol-soluble dye, carbon black, a resin and an organic solvent, wherein the carbon black described above has a DBP oil absorption of 80 cc/100 g or less. The carbon black has preferably a particle diameter of 30 m&mgr; or less and a content of 1 to 15 mass % based on the total amount of the ink.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: September 7, 2004
    Assignee: Mitsubishi Pencil Kabushiki Kaisha
    Inventors: Masaaki Morita, Susumu Suzuki, Toshiaki Takayanagi, Kyoko Kobayashi
  • Patent number: 6786957
    Abstract: An aqueous ink-jet ink composition for printing on offset media is disclosed comprising an ink colorant, an effective amount of at least one surfactant, and an effective amount of at least one aprotic polar solvent wherein the solvent is comprised of molecules having a molecular weight from 40 to 1500. Optionally, an effective amount of a non-aprotic polar solvent can be added. The aqueous ink-jet inks of the present invention are effective for printing on many commercially available offset papers and other media.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: September 7, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Mark L. Choy, John R Moffatt, Joseph W Tsang
  • Patent number: 6786954
    Abstract: Disclosed are sets of ink components, and ink compositions, useful for printing markings, on security documents, that are relatively resistant to counterfeiting. Also disclosed are the security documents formed, a method of printing and a method of authenticating the printed material. The markings, formed of the ink compositions have a spectral response that deviates from a predicted spectral response when linearly additively combining spectral responses of components of the ink composition, so that it becomes difficult to reverse-engineer the ink composition from the markings. Use of plural different markings, with each marking being a microdot, increases difficulty in counterfeiting. By forming a template of spectral responses of the original pattern, spectral responses of a pattern on an unknown document can be compared to the spectral responses on the template for determining whether the unknown document is authentic. Formation of the markings is facilitated using an inkjet printer.
    Type: Grant
    Filed: May 9, 2000
    Date of Patent: September 7, 2004
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Eric R. Lee, Martin L. Perl
  • Patent number: 6783650
    Abstract: A capillary cassette is made up of two separated holders, an array of capillaries and a tube. The capillaries that make up the array are inserted into the first holder, extend through second holder having a detection window and then the capillary array is aligned and then bundled and inserted into a heat shrinkable tube which covers positions to which filler is applied, the tube is heated and shrunk to bundle them in an airtight manner and inserted into a mounting member.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: August 31, 2004
    Assignees: The Institute of Physical & Chemical Research, Shimadzu Corporation
    Inventors: Yoshihide Hayashizaki, Shin Nakamura
  • Patent number: 6783581
    Abstract: An ink-jet ink comprising a glycol compound with grafts, an aqueous solution, a pigment as a colorant, a surfactant, and a humectant is disclosed. The ink-jet ink has low surface tension and high drying speed. Moreover, the ink-jet ink has high adhesive force between the ink drops and the printing medium, and thus provides the printing medium with high water fastness.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: August 31, 2004
    Assignee: Benq Corporation
    Inventors: Yu-Chang Shen, Chia-Hsin Chien, Yu-Ting Lin