Patents by Inventor CHENG-HSING CHANG

CHENG-HSING CHANG 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).

  • Helical permanent magnet structure and undulator using the same
    Patent number: 10485089
    Abstract: A helical permanent magnet structure includes at least one magnet assembly. The magnet assembly includes a plurality of permanent magnets and poles. The permanent magnets are with a magnetization direction, and formed as helical shape and arranged as a helical surface, the center of the helical surface has a longitudinal passage for being passed through by a charged particle. The poles are with the same amount of the permanent magnets, wherein the poles are magnetized by the permanent magnets and absorb on one side of the permanent magnets.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: November 19, 2019
    Assignee: NATIONAL SYNCHROTRON RADIATION RESEARCH CENTER
    Inventors: Cheng-Ying Kuo, Cheng-Hsing Chang, Cheng-Hsiang Chang
  • HELICAL PERMANENT MAGNET STRUCTURE AND UNDULATOR USING THE SAME
    Publication number: 20190075646
    Abstract: A helical permanent magnet structure includes at least one magnet assembly. The magnet assembly includes a plurality of permanent magnets and poles. The permanent magnets are with a magnetization direction, and formed as helical shape and arranged as a helical surface, the center of the helical surface has a longitudinal passage for being passed through by a charged particle. The poles are with the same amount of the permanent magnets, wherein the poles are magnetized by the permanent magnets and absorb on one side of the permanent magnets.
    Type: Application
    Filed: September 7, 2017
    Publication date: March 7, 2019
    Inventors: CHENG-YING KUO, CHENG-HSING CHANG, CHENG-HSIANG CHANG