Patents by Inventor Kyoko NAITO

Kyoko NAITO 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).

  • STEEL SHEET AND PRODUCTION METHOD THEREFOR
    Publication number: 20240026481
    Abstract: Provided is a steel sheet having excellent workability while ensuring excellent strength. The steel sheet comprises: a predetermined chemical composition; and a steel microstructure that contains ferrite: 45% to 90%, martensite: 5% to 30%, bainite: 1% to 25%, and retained austenite: 3% or more and in which [Mn]M/[Mn] is 1.00 to 1.15 and [Mn]M/[Mn]F is 1.00 to 1.30, wherein TS×El is 16000 MPa·% or more.
    Type: Application
    Filed: December 15, 2021
    Publication date: January 25, 2024
    Applicant: JFE STEEL CORPORATION
    Inventors: Takuya HIRASHIMA, Tatsuya NAKAGAITO, Masaki KOBA, Kyoko NAITO, Seisuke TSUDA, Katsuya HATA, Shotaro TERASHIMA