Patents by Inventor Hisayuki TAMURA

Hisayuki TAMURA 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).

  • X-RAY TUBE
    Publication number: 20220199347
    Abstract: According to one embodiment, in an X-ray tube, an electron convergence cup has a first surface located closer to the anode, and an electron convergence groove opening on the first surface and housing a filament. The first surface has a first edge located on the opening, and a second edge located on the opening and opposite to the first edge in a first direction. The first edge is closer to an outer peripheral part than the second edge is. When the distance between the first edge and the filament in the first direction is defined as a first distance and the distance between the second edge and the filament in the first direction is defined as a second distance, the first distance is shorter than the second distance.
    Type: Application
    Filed: March 11, 2022
    Publication date: June 23, 2022
    Applicant: CANON ELECTRON TUBES & DEVICES CO., LTD.
    Inventors: Katsunori SHIMIZU, Hisayuki TAMURA, Akihiro SASABE
  • ROTATION ANODE X-RAY TUBE UNIT AND ROTATION ANODE X-RAY TUBE ASSEMBLY
    Publication number: 20160029468
    Abstract: A rotation anode X-ray tube unit includes a rotation anode X-ray tube, a flow-passage formation member, and a X-ray shielding section. The X-ray shielding section includes an X-ray shield and a frame-shaped X-ray shielding member.
    Type: Application
    Filed: October 1, 2015
    Publication date: January 28, 2016
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Electron Tubes & Devices Co., Ltd.
    Inventors: Hidero ANNO, Masaji KANAGAMI, Yoshifumi IMAI, Yoshiaki SHIRATORI, Hisayuki TAMURA