Patents by Inventor Nobuyuki Tagami

Nobuyuki Tagami 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).

  • Steering control device and steering device
    Patent number: 11912351
    Abstract: A steering control device which applies an assist torque or a reaction torque to a steering member operated by a driver, includes: a torque loss estimation unit which estimates torque loss; and a correction amount calculation unit which calculates a correction amount according to a rack axial force estimation value calculated based on a roll rate when the torque loss estimation unit estimates the torque loss.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: February 27, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Kyouichi Tagami, Ken Isshiki, Nobuyuki Enomoto, Eishi Ishimaru
  • Lithium composite compound particles and process for producing the same, and non-aqueous electrolyte secondary battery
    Patent number: 9455444
    Abstract: The present invention relates to lithium composite compound particles having a composition represented by the formula: Li1+xNi1?y?zCoyMzO2 (M=B or Al), wherein the lithium composite compound particles have an ionic strength ratio A (LiO?/NiO2?) of not more than 0.3 and an ionic strength ratio B (Li3CO3+/Ni+) of not more than 20 as measured on a surface of the respective lithium composite compound particles using a time-of-flight secondary ion mass spectrometer. The lithium composite compound particles of the present invention can be used as a positive electrode active substance of a secondary battery which has good cycle characteristics and an excellent high-temperature storage property.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: September 27, 2016
    Assignee: TODA KOGYO CORPORATION
    Inventors: Hiroyasu Watanabe, Taiki Imahashi, Kazuhiko Kikuya, Nobuyuki Tagami, Hideaki Sadamura
  • LITHIUM COMPOSITE COMPOUND PARTICLES AND PROCESS FOR PRODUCING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
    Publication number: 20110281168
    Abstract: The present invention relates to lithium composite compound particles having a composition represented by the formula: Li1+xNi1-y-zCoyMzO2 (M=B or Al), wherein the lithium composite compound particles have an ionic strength ratio A (LiO?/NiO2?) of not more than 0.3 and an ionic strength ratio B (Li3CO3+/Ni+) of not more than 20 as measured on a surface of the respective lithium composite compound particles using a time-of-flight secondary ion mass spectrometer. The lithium composite compound particles of the present invention can be used as a positive electrode active substance of a secondary battery which has good cycle characteristics and an excellent high-temperature storage property.
    Type: Application
    Filed: December 3, 2009
    Publication date: November 17, 2011
    Applicant: TODA KOGYO CORPORATION
    Inventors: Hiroyasu Watanabe, Taiki Imahashi, Kazuhiko Kikuya, Nobuyuki Tagami, Hideaki Sadamura