Patents by Inventor Keiko Shibata

Keiko Shibata has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200200059
    Abstract: Provided is an injection device capable of suppressing the deposition of white products and performing an exhaust gas purification treatment. This injection device is provided with: an injection unit which is provided upstream of a selective reduction-type catalyst device provided inside an exhaust pipe constituting an exhaust passage of an internal combustion engine, and injects a urea aqueous solution or a diethylamine aqueous solution; a determination unit which determines whether white products derived from the urea aqueous solution injected by the injection part are deposited inside the exhaust pipe; and an injection control unit which controls the injection part to inject the diethylamine aqueous solution when the determination unit has determined that the white products were deposited.
    Type: Application
    Filed: June 12, 2018
    Publication date: June 25, 2020
    Applicant: Isuzu Motors Limited
    Inventor: Keiko SHIBATA
  • Patent number: 10559849
    Abstract: A glass-ceramic includes an oxide containing lithium (Li), silicon (Si), and boron (B) and has an X-ray diffraction spectrum with two or more peaks appearing in the range 20°?2??25° and with two or more peaks appearing in the range 25°<2??30°.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: February 11, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Keiko Furukawa, Tatsuya Furuya, Hideyuki Kumita, Sae Miyaji, Harumi Shibata, Masamitsu Suzuki, Go Sudo, Keisuke Shimizu
  • Patent number: 8535498
    Abstract: An electrochemical gas sensor includes: a disc-shaped metal bottom member; a cylindrical metal side member that extends along the axial direction of the bottom member to surround the bottom member; a ring-shaped polymer gasket that includes an opening in the center and in which both sides of the opening each have an L-shaped member in cross section, with one section of the L-shaped member being in contact with the inner side of the side member and the other section of the L-shaped member being in contact with the bottom member; a gas sensor body that is located in the opening of the gasket and whose bottom surface is in contact with the bottom member and that includes a pair of electrodes and a solid electrolyte membrane or a separator retaining a liquid electrolyte; and a metal cover that is in contact with the top surface of the gas sensor body.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: September 17, 2013
    Assignee: Figaro Engineering Inc.
    Inventors: Tomohiro Inoue, Yuki Kato, Keiko Shibata
  • Publication number: 20130068616
    Abstract: An electrochemical gas sensor includes: a disc-shaped metal bottom member; a cylindrical metal side member that extends along the axial direction of the bottom member to surround the bottom member; a ring-shaped polymer gasket that includes an opening in the center and in which both sides of the opening each have an L-shaped member in cross section, with one section of the L-shaped member being in contact with the inner side of the side member and the other section of the L-shaped member being in contact with the bottom member; a gas sensor body that is located in the opening of the gasket and whose bottom surface is in contact with the bottom member and that includes a pair of electrodes and a solid electrolyte membrane or a separator retaining a liquid electrolyte; and a metal cover that is in contact with the top surface of the gas sensor body.
    Type: Application
    Filed: March 26, 2012
    Publication date: March 21, 2013
    Applicant: FIGARO ENGINEERING INC.
    Inventors: Tomohiro INOUE, Yuki KATO, Keiko SHIBATA
  • Patent number: 7628922
    Abstract: The present invention provides a preanalysis treatment method for nitropolycyclic aromatic hydrocarbons present in diesel engine exhaust particulates and the like. The method comprises feeding a test solution 160 in which a sample containing polycyclic aromatic hydrocarbons is dissolved in a solvent to a silica gel column 170 using an eluent lowest in polarity among a plurality of eluents 110, 120 and 130 to be a mobile phase for the test solution unlike the solvent and to differ in polarity from each other; and then allowing polar solvents to flow in ascending order of polarity to fractionate nitropolycyclic aromatic hydrocarbons and polycyclic aromatic hydrocarbons other than the nitropolycyclic aromatic hydrocarbons.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: December 8, 2009
    Assignee: Isuzu Motors Limited
    Inventor: Keiko Shibata
  • Publication number: 20070138097
    Abstract: The present invention provides a preanalysis treatment method for nitropolycyclic aromatic hydrocarbons present in diesel engine exhaust particulates and the like. The method comprises feeding a test solution 160 in which a sample containing polycyclic aromatic hydrocarbons is dissolved in a solvent to a silica gel column 170 using an eluent lowest in polarity among a plurality of eluents 110, 120 and 130 to be a mobile phase for the test solution unlike the solvent and to differ in polarity from each other; and then allowing polar solvents to flow in ascending order of polarity to fractionate nitropolycyclic aromatic hydrocarbons and polycyclic aromatic hydrocarbons other than the nitropolycyclic aromatic hydrocarbons.
    Type: Application
    Filed: February 17, 2005
    Publication date: June 21, 2007
    Inventor: Keiko Shibata
  • Publication number: 20060210442
    Abstract: The invention provides an apparatus and method for efficiently analyzing nitropolycyclic aromatic hydrocarbon contained in diesel particulates. The invention comprises a step of extracting soluble organic fraction from diesel particulates contained in the exhaust of a diesel engine using a solvent, a step of concentrating and drying the extraction obtained by the extraction step, and a step of separating and extracting the solution via high-performance liquid chromatograph, wherein the separation step via the high-performance liquid chromatograph comprises a separation step using a silica gel/C8 column, a reduction step using an alumina/Pt—Rh reduction column, and a separation step using an ODS column, and further comprises a subsequent step of quantifying the nitropolycyclic aromatic hydrocarbon using a fluorescence detector.
    Type: Application
    Filed: July 9, 2004
    Publication date: September 21, 2006
    Inventor: Keiko Shibata
  • Patent number: RE47684
    Abstract: Disclosed is a cytoprotective agent for use with respect to ischemic damage, including as an active ingredient a triprenyl phenol compound represented by the following general formula (I), wherein X is —CHY—C(CH3)2Z, Y and Z are each independently —H or —OH, or jointly form a single bond, and R represents a hydrogen atom or a substituent with a molecular weight of 1000 or less.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: November 5, 2019
    Assignee: TMS CO., LTD.
    Inventors: Honda Kazuo, Terumasa Hashimoto, Keita Shibata, Keiko Hasegawa, Keiji Hasumi