Patents by Inventor Wataru HAYAMI

Wataru HAYAMI 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).

  • EMITTER, ELECTRON GUN IN WHICH SAME IS USED, ELECTRONIC DEVICE IN WHICH SAME IS USED, AND METHOD FOR MANUFACTURING SAME
    Publication number: 20240079198
    Abstract: The present invention provides an emitter made of a hafnium carbide (HfC) single crystal that stably emits electrons with high efficiency, a method for manufacturing the emitter, and an electron gun and an electronic device using the emitter. An emitter according to an embodiment of the present invention is an emitter including a nanowire, in which the nanowire is made of the hafnium carbide (HfC) single crystal, at least an end of the nanowire through which electrons are to be emitted is coated with hafnium oxycarbide (HfC1?xOx: 0<x?0.5), and a field electron emission pattern of the end obtained by a field emission microscope (FEM) is a single spot.
    Type: Application
    Filed: June 29, 2020
    Publication date: March 7, 2024
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Jie TANG, Shuai TANG, Ta-Wei CHIU, Wataru HAYAMI, Luchang QIN