Patents by Inventor Xiaoyong Luo

Xiaoyong Luo 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).

  • SUBSTITUTED ARYL COMPOUND AND PREPARATION METHOD THEREFOR AND USE THEREOF
    Publication number: 20210395226
    Abstract: The present application relates to a substituted aryl compound or a pharmaceutically acceptable salt, a stereoisomer, a polymorph, a solvate, a N-oxide, an isotope-labeled compound, a metabolite or a prodrug thereof, and a preparation method therefor and use thereof, also relates to a pharmaceutical composition containing the compound and a therapeutic use thereof. The compound or a pharmaceutical composition thereof can inhibit the activity of adenosine A2a receptor, and can be used for treating or preventing a disease related to adenosine A2a receptor, especially for treating a tumor.
    Type: Application
    Filed: December 19, 2019
    Publication date: December 23, 2021
    Applicant: SICHUAN KELUN-BIOTECH BIOPHARMACEUTICAL CO., LTD.
    Inventors: Jinming LIU, Ting HE, Jiaqiang CAI, Xiaoyong LI, Xiaoyong LUO, Qiang TIAN, Hongmei SONG, Tongtong XUE, Lichun WANG, Jingyi WANG
  • Peak detector and fixed gain amplifier circuit for automatic gain control and variable gain amplifier circuit
    Patent number: 7643805
    Abstract: A variable gain amplifier (VGA) circuit and an automatic gain control (AGC) method thereof are disclosed. The VGA circuit includes an amplifier circuit and an AGC circuit. The amplifier circuit amplifies an input signal to an output signal according to a predetermined gain and the AGC circuit is connected to the amplifier circuit for regulating the predetermined gain. The AGC circuit further includes a peak detector detecting a peak of the output signal, a replica of the peak detector for detecting a peak of a reference signal, and a comparator for comparing the peak of the output signal with the peak of the reference signal to provide a control signal and then providing the control signal to the amplifier circuit to regulate the predetermined gain.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: January 5, 2010
    Assignee: O2Micro International Ltd.
    Inventors: Seeteck Tan, Xiaoyong Luo
  • Peak detector and fixed gain amplifier circuit for automatic gain control and variable gain amplifier circuit
    Publication number: 20080009255
    Abstract: A variable gain amplifier (VGA) circuit and an automatic gain control (AGC) method thereof are disclosed. The VGA circuit includes an amplifier circuit and an AGC circuit. The amplifier circuit amplifies an input signal to an output signal according to a predetermined gain and the AGC circuit is connected to the amplifier circuit for regulating the predetermined gain. The AGC circuit further includes a peak detector detecting a peak of the output signal, a replica of the peak detector for detecting a peak of a reference signal, and a comparator for comparing the peak of the output signal with the peak of the reference signal to provide a control signal and then providing the control signal to the amplifier circuit to regulate the predetermined gain.
    Type: Application
    Filed: July 7, 2006
    Publication date: January 10, 2008
    Inventors: Seeteck Tan, Xiaoyong Luo