Patents by Inventor Jiajiang ZHAO

Jiajiang 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).

  • Human body security inspection apparatus and method of operating the same and filter device
    Patent number: 10983243
    Abstract: A human body security inspection apparatus, a method of operating the same, and an associated filter device are disclosed. The human body security inspection apparatus includes a radiation beam exit configured for emitting a radiation beam; a beam guiding box configured for guiding the radiation beam; and a filter device configured between the radiation beam exit and the beam guiding box. The filter device includes a housing and a filter cage having a central axis. The filter cage is formed by arranging two or more pairs of filtering sheets, which are made of different materials and/or have different thicknesses, in an encircling way. The filter cage is rotatable about its central axis such that at least one pair of filtering sheets is capable of filtering the radiation beam to adjust an outputted dosage of the radiation beam of the human body security inspection apparatus.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: April 20, 2021
    Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITED
    Inventors: Zhiqiang Chen, Yuanjing Li, Ziran Zhao, Wanlong Wu, Ming Ruan, Yingkang Jin, Guangwei Ding, Zongjun Shen, Jiajiang Zhao
  • HUMAN BODY SECURITY INSPECTION APPARATUS AND METHOD OF OPERATING THE SAME AND FILTER DEVICE
    Publication number: 20200012010
    Abstract: A human body security inspection apparatus, a method of operating the same, and an associated filter device are disclosed. The human body security inspection apparatus includes a radiation beam exit configured for emitting a radiation beam; a beam guiding box configured for guiding the radiation beam; and a filter device configured between the radiation beam exit and the beam guiding box. The filter device includes a housing and a filter cage having a central axis. The filter cage is formed by arranging two or more pairs of filtering sheets, which are made of different materials and/or have different thicknesses, in an encircling way. The filter cage is rotatable about its central axis such that at least one pair of filtering sheets is capable of filtering the radiation beam to adjust an outputted dosage of the radiation beam of the human body security inspection apparatus.
    Type: Application
    Filed: December 20, 2017
    Publication date: January 9, 2020
    Inventors: Zhiqiang CHEN, Yuanjing LI, Ziran ZHAO, Wanlong WU, Ming RUAN, Yingkang JIN, Guangwei DING, Zongjun SHEN, Jiajiang ZHAO