Patents by Inventor Motonobu Murakami

Motonobu Murakami 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: 20230134512
    Abstract: An energy storage apparatus used in a flight vehicle includes battery circuits connected in series, through which current flows during charge and discharge of the energy storage apparatus. Each of the battery circuits includes: a first electrical path; an energy storage cell connected to an adjacent battery circuit through the first electrical path; a first switch that includes a diode and is provided in the first electrical path such that a forward direction of the diode is a charge direction of the energy storage apparatus; a second electrical path connected to the adjacent battery circuit in parallel with the energy storage cell and the first switch; and a second switch that includes a diode and is provided in the second electrical path such that a forward direction of the diode is a discharge direction of the energy storage apparatus, and is turned on when the first switch is turned off.
    Type: Application
    Filed: March 19, 2021
    Publication date: May 4, 2023
    Inventors: Jiromasa MURAMATSU, Motonobu MURAKAMI, Daisuke KONISHI
  • Publication number: 20140038053
    Abstract: A positive active material for a lithium secondary battery contains a lithium-transition metal composite oxide represented by a composition formula of Li1+?Me1??O2 (Me is a transition metal element including Co, Ni, and Mn; 1.2<(1+?)/(1??)<1.6). A molar ratio (Co/Me) of Co contained in the Me ranges from 0.24 to 0.36, and when a space group R3-m is used for a crystal structure model based on an X-ray diffraction pattern, a half width of a diffraction peak that attributes to a (003) line ranges from 0.204° to 0.303°, or a half width of a diffraction peak that attributes to a (104) line ranges from 0.278° to 0.424°.
    Type: Application
    Filed: March 11, 2013
    Publication date: February 6, 2014
    Applicant: GS YUASA INTERNATIONAL LTD.
    Inventors: Daisuke Endo, Motonobu Murakami, Hiromasa Muramatsu