Patents by Inventor Katsumi NAGAOKA

Katsumi NAGAOKA 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).

  • Publication number: 20240395494
    Abstract: The purpose of the present invention, relating to lanthanide boride, which is known as a low work function material, is to provide a novel low work function material with low chemical reactivity, in particular a low work function material of which the material surface, after being exposed to atmospheric gases, can be cleaned at a heating temperature lower than in the prior art. The present invention is a laminate containing a lanthanide boride film formed on a substrate, the surface of said film being covered by a thin film, wherein the thin film is a monatomic layer of a hexagonal boron nitride thin film.
    Type: Application
    Filed: September 20, 2022
    Publication date: November 28, 2024
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Katsumi NAGAOKA, Takashi AIZAWA, Shun-ichiro OHMI