Patents by Inventor Rumi MATSUMOTO

Rumi MATSUMOTO 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).

  • Cooling device for hot-rolled steel sheet and cooling method of hot-rolled steel sheet
    Patent number: 11701697
    Abstract: The present cooling device includes: when cooling regions obtained by dividing an entire cooling region into a plurality of portions in a steel sheet conveyance direction and three or more portions in a width direction are set as divided cooling surfaces, a cooling water nozzle 23 and a switching device that switches between collision and non-collision of cooling water jetted from the cooling water nozzle 23 with the divided cooling surface, the cooling water nozzle 23 and the switching device provided for each of the divided cooling surfaces; and a control device that controls operation of the switching device based on a width-direction temperature distribution. The cooling water nozzle 23 has a jet axis P inclined with respect to a vertical line to the entire cooling region when viewed in the steel sheet conveyance direction, and the cooling water goes to the side opposite to the cooling water nozzle 23 in the width direction after colliding with the divided cooling surface.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: July 18, 2023
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Hiroshi Niitani, Nobumasa Hayashi, Rumi Matsumoto, Yoshihiro Serizawa, Tomofumi Hosho, Takumu Ushizawa, Naoko Katou
  • COOLING DEVICE FOR HOT-ROLLED STEEL SHEET AND COOLING METHOD OF HOT-ROLLED STEEL SHEET
    Publication number: 20220032352
    Abstract: The present cooling device includes: when cooling regions obtained by dividing an entire cooling region into a plurality of portions in a steel sheet conveyance direction and three or more portions in a width direction are set as divided cooling surfaces, a cooling water nozzle 23 and a switching device that switches between collision and non-collision of cooling water jetted from the cooling water nozzle 23 with the divided cooling surface, the cooling water nozzle 23 and the switching device provided for each of the divided cooling surfaces; and a control device that controls operation of the switching device based on a width-direction temperature distribution. The cooling water nozzle 23 has a jet axis P inclined with respect to a vertical line to the entire cooling region when viewed in the steel sheet conveyance direction, and the cooling water goes to the side opposite to the cooling water nozzle 23 in the width direction after colliding with the divided cooling surface.
    Type: Application
    Filed: September 10, 2019
    Publication date: February 3, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Hiroshi NIITANI, Nobumasa HAYASHI, Rumi MATSUMOTO, Yoshihiro SERIZAWA, Tomofumi HOSHO, Takumu USHIZAWA, Naoko KATOU