Patents by Inventor Katsuki Hayashi

Katsuki Hayashi 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).

  • Patent number: 11340277
    Abstract: An abnormality determination device for a secondary battery includes an internal-resistance calculation unit, a threshold memory unit, a capacity balance comparison unit, and an abnormality determination unit. The internal-resistance calculation unit detects an internal resistance in a negative-electrode reaction resistance dominant region in which a reaction resistance of a negative electrode is dominant in a charge and discharge reaction of the secondary battery. The threshold memory unit stores a capacity balance threshold used as a reference for determining abnormality in a balance between a capacity of a positive electrode and a capacity of the negative electrode in the secondary battery. The capacity balance comparison unit compares the internal resistance calculated by the internal-resistance calculation unit with the capacity balance threshold stored in the threshold memory unit.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: May 24, 2022
    Assignee: DENSO CORPORATION
    Inventors: Nobuo Yamamoto, Ichiro Yamada, Shuhei Yoshida, Masaya Nakamura, Takehiko Yamaki, Hiroyasu Suzuki, Katsuki Hayashi
  • Publication number: 20220146590
    Abstract: A degradation degree assessment device for a secondary battery is to assess a degree of degradation of a secondary battery and includes a battery characteristic acquisition unit, a capacity estimation unit, and an assessment unit. The battery characteristic acquisition unit acquires a battery characteristic relating to a voltage transition of the secondary battery in a predetermined voltage section. The assessment unit assesses the degree of degradation of the secondary battery based on the battery characteristic acquired by the battery characteristic acquisition unit or based on a battery characteristic-related value computed on the basis of the battery characteristic.
    Type: Application
    Filed: January 27, 2022
    Publication date: May 12, 2022
    Applicant: DENSO CORPORATION
    Inventors: Tomomi ASAI, Nobuo YAMAMOTO, Hiroyasu SUZUKI, Katsuki HAYASHI, Yuya MINABE
  • Publication number: 20210339653
    Abstract: In a system for setting power supply of reusable secondary cell modules, a degradation level estimation unit estimates a degradation level of a cell-module performance of each of a plurality of secondary cell modules, based on: the history information items about the respective the secondary cell modules acquired by a history information collection unit; and the cell-module performances of the respective secondary cell modules collected by a cell performance collection unit. A suppliable quantity prediction unit predicts a suppliable quantity of power of each of the plurality of secondary cell modules in accordance with the degradation level of the cell-module performance of a corresponding one of the plurality of secondary cell modules. A supply balance setting unit sets a power supply balance among the plurality of secondary cell modules based on the suppliable quantity of power of each of the plurality of secondary cell modules predicted by the prediction unit.
    Type: Application
    Filed: July 16, 2021
    Publication date: November 4, 2021
    Applicant: DENSO CORPORATION
    Inventors: Nobuo YAMAMOTO, Shuhei YOSHIDA, Katsuki HAYASHI, Takehiko YAMAKI, Hiroyasu SUZUKI, Yuya MINABE
  • Publication number: 20200371145
    Abstract: An abnormality determination device for a secondary battery includes an internal-resistance calculation unit, a threshold memory unit, a capacity balance comparison unit, and an abnormality determination unit. The internal-resistance calculation unit detects an internal resistance in a negative-electrode reaction resistance dominant region in which a reaction resistance of a negative electrode is dominant in a charge and discharge reaction of the secondary battery. The threshold memory unit stores a capacity balance threshold used as a reference for determining abnormality in a balance between a capacity of a positive electrode and a capacity of the negative electrode in the secondary battery. The capacity balance comparison unit compares the internal resistance calculated by the internal-resistance calculation unit with the capacity balance threshold stored in the threshold memory unit.
    Type: Application
    Filed: August 13, 2020
    Publication date: November 26, 2020
    Applicant: DENSO CORPORATION
    Inventors: Nobuo YAMAMOTO, Ichiro YAMADA, Shuhei YOSHIDA, Masaya NAKAMURA, Takehiko YAMAKI, Hiroyasu SUZUKI, Katsuki HAYASHI
  • Patent number: 6001103
    Abstract: Bone connector including a first joint and a second joint insertable and securable into respective cut bone pieces for joining the cut bone pieces. Each joint has a flat end surface flush with the cut end of the corresponding cut bone piece when secured therein. The first joint includes a stepped hole having a coaxial hole portion, a shoulder with a surface substantially perpendicular to the longitudinal direction of the joints, and an innermost engaging portion. The second joint includes a stepped shaft having a first shaft fitting the coaxial hole portion and an engaging portion for engaging the innermost engaging portion of the first joint, which hold the joints coaxially along a line, as well as a plate spring member. The joints both include cylindrical bodies of substantially equal diameter for connecting the cut bone pieces, and at least outer surface portions of the joints are made of a material having a bioactive affinity with the human body or biocompatibility with human tissue.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: December 14, 1999
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Shigeki Hitomi, Hiroshi Mizuno, Satoshi Ojima, Katsuki Hayashi
  • Patent number: 5553052
    Abstract: A detecting apparatus which detects an inclination of an objective lens relative to a reference surface is provided. The objective lens is part of an optical data recording and reproducing apparatus in which data is optically recorded on and reproduced from a recording medium which is placed parallel to the reference surface. The apparatus includes a transparent parallel plate which is opposite the objective lens, parallel to the reference surface, and made of a material that is substantially optically equivalent to a transparent material of the recording medium. The apparatus further includes a reflecting mechanism for reflecting coherent light which has passed through the objective lens and the transparent parallel plate back towards the transparent parallel plate and the objective lens, and a beam splitting mechanism for splitting the coherent light into a first beam and a second beam.
    Type: Grant
    Filed: August 2, 1994
    Date of Patent: September 3, 1996
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Masahiro Oono, Hisashi Konno, Toshiyuki Kase, Katsuki Hayashi, Hiroshi Nishikawa
  • Patent number: 5317144
    Abstract: An apparatus for measuring a wave front aberration includes a light beam splitter for dividing a parallel laser light beam made incident from a measuring object into two beamfluxes, an image rotator disposed in at least one optical path of the divided beam fluxes for rotating the wave front on the optical axis, an interference device for interfering after superposing the beam fluxes whose wave fronts are rotated relatively, an imaging lens for forming the interfered beam into an image, and an observation device for observing the imaged interference fringes.
    Type: Grant
    Filed: July 28, 1992
    Date of Patent: May 31, 1994
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Masahiro Oono, Tsuyoshi Itoh, Katsuki Hayashi, Toshiyuki Kase, Masahiko Sasaki, Hiroshi Yamamoto, Isao Okuda
  • Patent number: 5223970
    Abstract: A mechanism for adjusting an optical axis of an optical device, particularly in an optical information recording and reproducing system, in accordance with which the optical axis is movable in two directions, independently of each other. Various parts of the optical system, such as an anamorphic prism and a fixed prism, may be moved to adjust the degree of parallelism and/or displacement of a laser beam. A laser ray source in the system also may be movable independently in different directions.
    Type: Grant
    Filed: August 27, 1990
    Date of Patent: June 29, 1993
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Masahiro Oono, Tsuyoshi Itoh, Masahiko Sasaki, Hiroshi Yamamoto, Katsuki Hayashi
  • Patent number: 5157459
    Abstract: An apparatus for measuring a wave front aberration including a light beam splitter for dividing a parallel laser light beam incident from a measuring object into two beam fluxes, an image rotator disposed in at least one optical path of the divided beam fluxes for rotating the wave from on the optical axis, an interference device for interfering, after superposing the beam fluxes, whose wave fronts are rotated relatively, an imaging lens for forming the interfered beam into an image, and an observation device for observing the imaged interference fringes.
    Type: Grant
    Filed: August 29, 1990
    Date of Patent: October 20, 1992
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Masahiro Oono, Tsuyoshi Itoh, Katsuki Hayashi, Toshiyuki Kase, Masahiko Sasaki, Hiroshi Yamamoto, Isao Okuda