Patents by Inventor Hijiri HIRATA

Hijiri HIRATA 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).

  • FUEL CELL SEPARATOR MANUFACTURING METHOD
    Publication number: 20240301564
    Abstract: The present disclosure relates to a fuel cell separator manufacturing method involving immersing a stainless-steel base material formed into a shape of a separator in an acidic solution having a fluorine ion concentration of 0.1 ppm or higher and a pH of 1±0.2 at 80° C.±5° C. for 60 minutes or longer to perform a modification treatment on a surface of the stainless-steel base material.
    Type: Application
    Filed: January 8, 2024
    Publication date: September 12, 2024
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yusuke NOMURA, Hijiri HIRATA, Tsuyoshi SEGUCHI