Patents by Inventor Tian chi Zhao

Tian chi Zhao 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).

  • Photomultiplier tube for collecting photoelectrons from a photocathode covering a whole inner surface of a vacuum container
    Patent number: 8324807
    Abstract: A photomultiplier tube including a photocathode, an electron multiplier, an electron collector, and a power lead, wherein the photocathode and the electron multiplier are disposed in a sealed transparent vacuum envelope, the electron collector and the power lead are connected with an external circuit outside the vacuum envelope, the photocathode is formed on the entire inner surface of the vacuum envelope, and the electron multiplier is located on the internal center of the vacuum envelope to receive photoelectrons from the photocathode in all directions for electrons multiplication. Because the effective photocathode area is increased, the detection efficiency of unit light-receiving area is improved.
    Type: Grant
    Filed: July 20, 2009
    Date of Patent: December 4, 2012
    Assignee: Institute of High Energy Physics, Chinese Academy of Sciences
    Inventors: Yi fang Wang, Sen Qian, Tian chi Zhao, Jun Cao
  • PHOTOMULTIPLIER TUBE
    Publication number: 20120019132
    Abstract: a photomultiplier tube including a photocathode, an electron multiplier, an electron collector, and a power lead, wherein the photocathode and the electron multiplier are disposed in a sealed transparent vacuum envelope, the electron collector and the power lead are connected with an external circuit outside the vacuum envelope, the photocathode is formed on the entire inner surface of the vacuum envelope, and the electron multiplier is located on the internal center of the vacuum envelope to receive photoelectrons from the photocathode in all directions for electrons multiplication. Because the effective photocathode area is increased, the detection efficiency of unit light-receiving area is improved.
    Type: Application
    Filed: July 20, 2009
    Publication date: January 26, 2012
    Applicant: INSTITUTE OF HIGH ENERGY PHYSICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Yi fang Wang, Sen Qian, Tian chi Zhao, Jun Cao