Patents by Inventor Ichiro USHIJIMA

Ichiro USHIJIMA 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).

  • Radiation shield and optical lattice clock including radiation shield
    Patent number: 11493887
    Abstract: Provided according to an embodiment of the present disclosure is a radiation shield 10 including a shield wall surrounding a hollow region capable of accommodating therein atoms for an optical lattice clock 100, the shield wall having, provided therein, at least two apertures communicating with outside.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: November 8, 2022
    Assignee: RIKEN
    Inventors: Hidetoshi Katori, Masao Takamoto, Ichiro Ushijima, Takehiro Tawara, Hideo Yokota
  • RADIATION SHIELD AND OPTICAL LATTICE CLOCK INCLUDING RADIATION SHIELD
    Publication number: 20190227496
    Abstract: Provided according to an embodiment of the present disclosure is a radiation shield 10 including a shield wall surrounding a hollow region capable of accommodating therein atoms for an optical lattice clock 100, the shield wall having, provided therein, at least two apertures communicating with outside.
    Type: Application
    Filed: January 18, 2019
    Publication date: July 25, 2019
    Inventors: Hidetoshi KATORI, Masao TAKAMOTO, Ichiro USHIJIMA, Takehiro TAWARA, Hideo YOKOTA