Patents by Inventor Shaohua Chang

Shaohua 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).

  • Patent number: 11508487
    Abstract: A full-digital control rod position measurement device and a method thereof. The full-digital rod position measurement device transforms the core process of rod position measurement that is normally processed by an analog circuit or analog-to-digital mixed circuit into a digital processing. The full-digital rod position measurement device comprises an excitation power supply, an integrated interface board, and a universal signal processor. The universal signal processor processes output signals of detectors according to a preset numerical processing algorithm and outputs Gray code rod position signals. The full-digital rod position measurement device and method disclosed by the present disclosure may effectively reduce the complexity of the primary excitation circuit and the secondary measurement signal processing circuit of the detectors, and improve the operation reliability and measurement accuracy of the rod position processing equipment.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: November 22, 2022
    Assignee: CNNC NUCLEAR POWER OPERATION MANAGEMENT CO., LTD
    Inventors: Zhengke Chang, Long Yu, ShengFeng Xu, ShaoHua Xu, Bo Chao, Fei Xu, Peng Zhao, Yuan Huang, Chengguang Yuan
  • Publication number: 20140296216
    Abstract: A compound of formula (I) or (II) and use of the compound in the preparation of drugs for treating cancer are disclosed. The study shows that the compounds can inhibit the growth of many kinds of tumor cells, can be used for targeting epidermal growth factor receptor (EGFR), and particularly can inhibit tumor cells with single or multiple mutations of EGFR (T790M). Therefore, the compound can be used as EGFR inhibitor to treat cancer and has a relatively large application value.
    Type: Application
    Filed: December 21, 2011
    Publication date: October 2, 2014
    Applicant: GUANGZHOU INSTITUTE OF BIOMEDICINE AND HEALTH, CHINESE ACADEMY OF SCIENCES
    Inventors: Ke Ding, Shaohua Chang, Shilin Xu, Lianwen Zhang, Zhengchao Tu, Jian Ding, Meiyu Geng, Yi Chen