Patents by Inventor Hirokazu Kojima

Hirokazu Kojima 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: 20240376618
    Abstract: A hydrogen production system includes a hydrogen production facility and a management server. The management server includes an operation plan creation unit and an operation plan output unit. The operation plan creation unit creates an operation plan for the hydrogen production facility. The operation plan output unit outputs data including the operation plan created by the operation plan creation unit. The operation plan creation unit creates an operation plan for the hydrogen production facility including a demand response possible amount for each unit time based on a demand response consideration for each unit time determined in advance.
    Type: Application
    Filed: August 15, 2022
    Publication date: November 14, 2024
    Applicants: ENEOS Corporation, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Kosuke HARADA, Hirofumi TAKAMI, Ichiro OKUMO, Kazuki UEHARA, Hirokazu KOJIMA, Hiroshi KIKUSATO, Takashi OOZEKI, Hirohide FURUTANI
  • Publication number: 20220316075
    Abstract: A method for controlling a hydrogen generation system includes controlling the potentials of an electrode for oxygen generation and an electrode for hydrogen generation included in an electrolyzer so that the potential change is smaller in the electrode for oxygen generation or the electrode for hydrogen generation having a larger deterioration rate than in the electrode having a smaller deterioration rate.
    Type: Application
    Filed: September 11, 2020
    Publication date: October 6, 2022
    Applicant: ENEOS CORPORATION
    Inventors: Kosuke HARADA, Koji MATSUOKA, Hirofumi TAKAMI, Yasushi SATO, Hirokazu KOJIMA, Naoya ITOU, Taku TSUJIMURA, Hirohide FURUTANI
  • Patent number: 8967340
    Abstract: A friction clutch device includes clutch plates which are retained through meshing engagement on the inner peripheral surface of an outer case, which is rotatably driven by an engine. Each clutch plate includes a flat, annular pressing element which is pressed against a clutch friction plate for frictional contact therewith. Engagement protrusions are formed on the outer peripheral surface of the pressing element. The engagement protrusions fit into recessed engagement grooves provided on the outer case and mesh with the outer case. Proiectinq portions which project toward the inner peripheral surface of the outer case are formed on the outer peripheral surface of the pressing element.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: March 3, 2015
    Assignee: Kabushiki Kaisha F.C.C.
    Inventors: Jun Tokumasu, Yoichiro Nakano, Hirokazu Kojima
  • Publication number: 20130015025
    Abstract: A plate element which can reduce drag torque, a friction clutch device including such a plate element, and a brake device including such a plate element are provided. A friction clutch device 100 includes clutch plates 103 which are retained, through meshing engagement, on the inner peripheral surface 101a of an outer case 101, which is rotatably driven by an engine. Each clutch plate 103 includes a flat, annular pressing element 103a which is pressed against a clutch friction plate 107 for frictional contact therewith. Engagement protrusions 103b are radially formed on the outer peripheral surface of the pressing element 103a. The engagement protrusions 103b are fit into recessed engagement grooves 101b provided on the outer case 101 and are meshed with the outer case 101. Projecting portions 103c which project toward the inner peripheral surface 101a of the outer case 101 are formed between adjacent engagement protrusions 103b on the outer peripheral surface of the pressing element 103a.
    Type: Application
    Filed: February 3, 2011
    Publication date: January 17, 2013
    Inventors: Jun Tokumasu, Yoichiro Nakano, Hirokazu Kojima