Patents by Inventor Hideyuki ISHIGAMI

Hideyuki ISHIGAMI 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).

  • Indentation resistance measurement method, indentation resistance prediction method for rolling bearings, machining condition selection method, bearing material quality selection method, burnishing condition selection method, and bearing manufacturing method
    Patent number: 11965556
    Abstract: A method for measuring indentation resistance includes: obtaining a first curve indicating a yield shear stress in a depth direction of a raceway surface of a material forming a rolling bearing in a state before the raceway surface is subjected to machining, a second curve indicating a static shear stress in the depth direction of the raceway surface in a state in which the raceway surface is subjected to the machining, and a third curve indicating a static shear stress in the depth direction of the raceway surface in a state in which rolling elements are in contact with the raceway surface and a static load is applied to the raceway surface; and obtaining a correlation between an area and an indentation depth of the raceway ring by defining a region surrounded by exceeding the first curve and the second curve and falling below the third curve as the area.
    Type: Grant
    Filed: April 7, 2021
    Date of Patent: April 23, 2024
    Assignee: NSK LTD.
    Inventors: Hirofumi Ito, Takahito Shimada, Masahide Natori, Hideyuki Hidaka, Hayato Ishigami, Hiroki Komata
  • System model evaluation system, operation management system, system model evaluation method, and program
    Patent number: 11288159
    Abstract: There is provided a system model evaluation system including a system model candidate creation part configured to create a candidate(s) of a system model by changing a pattern of selecting an inter-sensor-value relationship created by using sensor values acquired from sensors arranged in a system to which the system model is directed. This system model evaluation system further includes a system model evaluation part configured to evaluate the candidate(s) of the system model by inputting predetermined evaluation data to the created candidate(s) of the system model.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: March 29, 2022
    Assignees: CHUBU ELECTRIC POWER COMPANY, INC., NEC CORPORATION, JERA CO., INC.
    Inventors: Motohiro Ichiba, Hideyuki Ishigami, Takayoshi Asakura, Tomoya Soma, Mayumi Takagi
  • SYSTEM MODEL EVALUATION SYSTEM, OPERATION MANAGEMENT SYSTEM, SYSTEM MODEL EVALUATION METHOD, AND PROGRAM
    Publication number: 20190220380
    Abstract: There is provided a system model evaluation system including a system model candidate creation part configured to create a candidate(s) of a system model by changing a pattern of selecting an inter-sensor-value relationship created by using sensor values acquired from sensors arranged in a system to which the system model is directed. This system model evaluation system further includes a system model evaluation part configured to evaluate the candidate(s) of the system model by inputting predetermined evaluation data to the created candidate(s) of the system model.
    Type: Application
    Filed: May 25, 2017
    Publication date: July 18, 2019
    Applicants: CHUBU ELECTRIC POWER COMPANY, INC., NEC CORPORATION
    Inventors: Motohiro ICHIBA, Hideyuki ISHIGAMI, Takayoshi ASAKURA, Tomoya SOMA, Mayumi TAKAGI