Patents by Inventor Jun UZUHASHI

Jun UZUHASHI 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
    Patent number: 11915920
    Abstract: The present invention provides a simpler method for sharpening a tip of an emitter. In addition, the present invention provides an emitter including a nanoneedle made of a single crystal material, an emitter including a nanowire made of a single crystal material such as hafnium carbide (HfC), both of which stably emit electrons with high efficiency, and an electron gun and an electronic device using any one of these emitters. A method for manufacturing the emitter according to an embodiment of the present invention comprises processing a single crystal material in a vacuum using a focused ion beam to form an end of the single crystal material, through which electrons are to be emitted, into a tapered shape, wherein the processing is performed in an environment in which a periphery of the single crystal material fixed to a support is opened.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: February 27, 2024
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Jie Tang, Shuai Tang, Ta-Wei Chiu, Tadakatsu Ohkubo, Jun Uzuhashi, Kazuhiro Hono, Luchang Qin
  • NANOCRYSTALLINE SOFT MAGNETIC ALLOY
    Publication number: 20230049280
    Abstract: The present invention is an alloy that contains Fe, B, P, and Cu, and includes a non-crystalline phase and a plurality of crystalline phases formed in the non-crystalline, wherein an average Fe concentration in a whole alloy is 79 atomic % or greater, and wherein a density of Cu clusters when a region with a Cu concentration of 6.0 atomic % or greater among regions with 1.0 nm on a side in atom probe tomography is determined to be a Cu cluster is 0.20×1024/m3.
    Type: Application
    Filed: December 22, 2020
    Publication date: February 16, 2023
    Applicants: TOHOKU MAGNET INSTITUTE CO., LTD., NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tatsuya Tomita, Yohei Nomura, Jun Uzuhashi, Tadakatsu Ohkubo, Kazuhiro Hono
  • EMITTER, ELECTRON GUN IN WHICH SAME IS USED, ELECTRONIC DEVICE IN WHICH SAME IS USED, AND METHOD FOR MANUFACTURING SAME
    Publication number: 20220406552
    Abstract: The present invention provides a simpler method for sharpening a tip of an emitter. In addition, the present invention provides an emitter including a nanoneedle made of a single crystal material, an emitter including a nanowire made of a single crystal material such as hafnium carbide (HfC), both of which stably emit electrons with high efficiency, and an electron gun and an electronic device using any one of these emitters. A method for manufacturing the emitter according to an embodiment of the present invention comprises processing a single crystal material in a vacuum using a focused ion beam to form an end of the single crystal material, through which electrons are to be emitted, into a tapered shape, wherein the processing is performed in an environment in which a periphery of the single crystal material fixed to a support is opened.
    Type: Application
    Filed: October 20, 2020
    Publication date: December 22, 2022
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Jie TANG, Shuai TANG, Ta-Wei CHIU, Tadakatsu OHKUBO, Jun UZUHASHI, Kazuhiro HONO, Luchang QIN