Patents by Inventor Tatsunori Yokote

Tatsunori Yokote 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).

  • Non-aqueous electrolyte secondary battery
    Patent number: 9748565
    Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode, a non-aqueous electrolyte, and a separator, wherein the positive electrode includes a positive electrode current collector and a positive electrode material mixture layer formed on one or both sides of the positive electrode current collector, the positive electrode material mixture layer has a thickness greater than 80 ?m per side of the positive electrode current collector, the positive electrode material mixture layer includes a positive electrode active material, the positive electrode active material is composed of secondary particles formed by aggregation of primary particles, the secondary particles have an average particle size of 6 ?m or less, and, when diffraction-line integrated intensities of the (003) plane and the (104) plane in an X-ray diffraction chart of the positive electrode material mixture layer are I003 and I104, respectively, the ratio I003/I104 of the integrated intensities is 1.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: August 29, 2017
    Assignee: HITACHI MAXELL, LTD.
    Inventors: Tatsunori Yokote, Mitsuhiro Kishimi
  • NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
    Publication number: 20130236780
    Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode, a non-aqueous electrolyte, and a separator, wherein the positive electrode includes a positive electrode current collector and a positive electrode material mixture layer formed on one or both sides of the positive electrode current collector, the positive electrode material mixture layer has a thickness greater than 80 ?m per side of the positive electrode current collector, the positive electrode material mixture layer includes a positive electrode active material, the positive electrode active material is composed of secondary particles formed by aggregation of primary particles, the secondary particles have an average particle size of 6 ?m or less, and, when diffraction-line integrated intensities of the (003) plane and the (104) plane in an X-ray diffraction chart of the positive electrode material mixture layer are I003 and I104, respectively, the ratio I003/I104 of the integrated intensities is 1.
    Type: Application
    Filed: March 9, 2012
    Publication date: September 12, 2013
    Applicant: HITACHI, LTD.
    Inventors: Tatsunori Yokote, Mitsuhiro Kishimi