Patents by Inventor Seiji MORISHIGE

Seiji MORISHIGE 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).

  • Production method of hot-dip galvanized steel sheet
    Patent number: 11414736
    Abstract: The present invention is a production method of a hot-dip galvanized steel sheet including annealing a belt-shaped steel sheet having a Si content of greater than or equal to 0.2% by mass, wherein the annealing is continuously carried out using an annealing furnace having an oxidation heating zone and a reduction heating zone in this order, while the steel sheet is fed using rollers. The annealing includes oxidizing a surface of the steel sheet in the oxidation heating zone at a temperature at which roll pickup does not occur and reducing an iron oxide layer, formed by the oxidizing, in the reduction heating zone before the iron oxide layer reaches an initial roller in the reduction heating zone.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: August 16, 2022
    Assignee: Kobe Steel, Ltd.
    Inventors: Kazuya Kimijima, Seiji Morishige, Shinobu Nakayama, Ryo Sasaki, Mikako Takeda
  • PRODUCTION METHOD OF HOT-DIP GALVANIZED STEEL SHEET
    Publication number: 20200248294
    Abstract: The present invention is a production method of a hot-dip galvanized steel sheet including annealing a belt-shaped steel sheet having a Si content of greater than or equal to 0.2% by mass, wherein the annealing is continuously carried out using an annealing furnace having an oxidation heating zone and a reduction heating zone in this order, while the steel sheet is fed using rollers. The annealing includes oxidizing a surface of the steel sheet in the oxidation heating zone at a temperature at which roll pickup does not occur and reducing an iron oxide layer, formed by the oxidizing, in the reduction heating zone before the iron oxide layer reaches an initial roller in the reduction heating zone.
    Type: Application
    Filed: September 13, 2018
    Publication date: August 6, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Kazuya KIMIJIMA, Seiji MORISHIGE, Shinobu NAKAYAMA, Ryo SASAKI, Mikato TAKEDA