Patents by Inventor Caijun Li

Caijun Li 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).

  • Detection circuit for a nerve stimulator
    Patent number: 11614466
    Abstract: A detection circuit includes an open circuit detection branch and a current detection branch. The open circuit detection branch includes a comparator and a digital logic branch. A positive input terminal of the comparator is connected to one end of the sampling resistor adjacent to the stimulation source, a negative input terminal of the comparator is connected to one end of the sampling resistor facing away from the stimulation source, and an output terminal of the comparator is connected to the digital logic branch. The current detection branch includes an amplifier and a first switch. A negative input terminal of the amplifier is connected to the one end of the sampling resistor facing away from the stimulation source, an output terminal of the amplifier is connected to a control terminal of the first switch.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: March 28, 2023
    Assignee: SCENERAY CO., LTD
    Inventors: Weiran Zhu, Caijun Li
  • METHOD AND APPARATUS FOR EVALUATING VOLUMES OF DISCHARGED HYDROCARBON AND EXTERNALLY CHARGED HYDROCARBON IN MUD SHALE
    Publication number: 20230053348
    Abstract: A method and apparatus for evaluating volumes of discharged hydrocarbon and externally charged hydrocarbon in a mud shale. The method comprises: determining a hydrogen index and a current hydrocarbon generation potential parameter of a mud shale in target block based on total organic carbon test data and pyrolysis analysis test data of the mud shale; determining an original hydrogen index of the mud shale based on the hydrogen index and the pyrolysis analysis test data; and evaluating a volume of discharged hydrocarbon and a volume of externally charged hydrocarbon in the mud shale based on the current hydrocarbon generation potential parameter and the original hydrogen index.
    Type: Application
    Filed: August 23, 2022
    Publication date: February 23, 2023
    Inventors: Tao HU, Xiongqi PANG, Fujie JIANG, Yuan LIU, Guanyun WU, Jiahao LYU, Zhenxue JIANG, Yao HU, Caijun LI, Chenxi ZHANG, Meiling HU, Renda HUANG
  • DETECTION CIRCUIT FOR A NERVE STIMULATOR
    Publication number: 20220317204
    Abstract: A detection circuit includes an open circuit detection branch and a current detection branch. The open circuit detection branch includes a comparator and a digital logic branch. A positive input terminal of the comparator is connected to one end of the sampling resistor adjacent to the stimulation source, a negative input terminal of the comparator is connected to one end of the sampling resistor facing away from the stimulation source, and an output terminal of the comparator is connected to the digital logic branch. The current detection branch includes an amplifier and a first switch. A negative input terminal of the amplifier is connected to the one end of the sampling resistor facing away from the stimulation source, an output terminal of the amplifier is connected to a control terminal of the first switch.
    Type: Application
    Filed: November 25, 2019
    Publication date: October 6, 2022
    Applicant: SCENERAY CO., LTD.
    Inventors: Weiran Zhu, Caijun Li