Patents by Inventor Shinobu CHIBA

Shinobu CHIBA 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).

  • Plant control apparatus, plant control method and power generation plant
    Patent number: 11391184
    Abstract: In one embodiment, a plant control apparatus includes a first stop controller configured to, when stopping a plant, stop a steam turbine to start to drop rotating speed of a second shaft of the steam turbine from rated speed, and start to drop rotating speed of a first shaft of a gas turbine from the rated speed while continuing combustion of a combustor after the stop of the steam turbine. The apparatus further includes a second stop controller configured to shut off fuel of the combustor to stop the gas turbine when the rotating speed of the first shaft drops to first speed. The second stop controller stops the gas turbine such that the rotating speed of the first shaft catches up with the rotating speed of the second shaft at second speed that is equal to or lower than the first speed and a clutch is engaged.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: July 19, 2022
    Assignees: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION, TOSHIBA PLANT SYSTEMS & SERVICES CORPORATION
    Inventors: Mohammed Ameen Abbas Alzuraiqi, Masayuki Tobo, Yuta Iwata, Mizu Kajihara, Shinobu Chiba
  • PLANT CONTROL APPARATUS, PLANT CONTROL METHOD AND POWER GENERATION PLANT
    Publication number: 20210095579
    Abstract: In one embodiment, a plant control apparatus includes a first stop controller configured to, when stopping a plant, stop a steam turbine to start to drop rotating speed of a second shaft of the steam turbine from rated speed, and start to drop rotating speed of a first shaft of a gas turbine from the rated speed while continuing combustion of a combustor after the stop of the steam turbine. The apparatus further includes a second stop controller configured to shut off fuel of the combustor to stop the gas turbine when the rotating speed of the first shaft drops to first speed. The second stop controller stops the gas turbine such that the rotating speed of the first shaft catches up with the rotating speed of the second shaft at second speed that is equal to or lower than the first speed and a clutch is engaged.
    Type: Application
    Filed: August 25, 2020
    Publication date: April 1, 2021
    Applicants: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION, TOSHIBA PLANT SYSTEMS & SERVICES CORPORATION
    Inventors: Mohammed Ameen Abbas ALZURAIQI, Masayuki TOBO, Yuta IWATA, Mizu KAJIHARA, Shinobu CHIBA
  • VEHICLE OUTER MIRROR DEVICE
    Publication number: 20130328339
    Abstract: A back coat, a metal thin film and a top coat are applied to an outer surface of a base member of a visor cover of a vehicle door mirror device, and in particular the metal thin film is formed by vapor deposition. The film thickness of the metal thin film can accordingly be made thinner than a case of when forming a metal film by plating, and the thickness of the metal thin film is easily managed. Accordingly, unwanted deformation of the visor cover when forming the metal thin film to the outer surface of the visor cover is not occurred, or deformation occurring in the visor cover can be suppressed.
    Type: Application
    Filed: June 10, 2013
    Publication date: December 12, 2013
    Inventors: Takehiro HAMADA, Masakazu IWATSUKI, Koichi HARUTA, Takafumi SAITO, Kengo OKAMOTO, Shinobu CHIBA