Patents by Inventor Chaofei LI

Chaofei 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).

  • Non-modulated infrared sensor for handheld halogen leak detector and quantitative detection method thereof
    Patent number: 12359999
    Abstract: A non-modulated infrared sensor for a handheld halogen leak detector and a quantitative detection method thereof, the sensor comprising an infrared transmitter, an optical filter, an infrared absorption cell and an infrared receiver, the infrared transmitter and the optical filter being sequentially installed at one end of the infrared absorption cell, and the infrared receiver being installed at the other end of the infrared absorption cell; the infrared absorption cell is composed of a light source chamber, a gas chamber channel and an infrared-receiver chamber that are sealingly connected in sequence, the light source chamber and the infrared-receiver chamber are respectively provided with a gas inlet and a gas outlet, and the gas inlet is communicated with the target gas or the background gas through a solenoid valve; an infrared light source of the single-channel infrared receiver passes through a constant voltage power supply circuit; and the infrared receiver is connected to a single-chip microcomputer
    Type: Grant
    Filed: October 10, 2022
    Date of Patent: July 15, 2025
    Assignee: JIANGSU JINGCHUANG ELECTRONICS CO., LTD.
    Inventors: Shuangyun Li, Chong Lin, Zhongxiang Tang, Chaofei Li
  • NON-MODULATED INFRARED SENSOR FOR HANDHELD HALOGEN LEAK DETECTOR AND QUANTITATIVE DETECTION METHOD THEREOF
    Publication number: 20230110457
    Abstract: A non-modulated infrared sensor for a handheld halogen leak detector and a quantitative detection method thereof, the sensor comprising an infrared transmitter, an optical filter, an infrared absorption cell and an infrared receiver, the infrared transmitter and the optical filter being sequentially installed at one end of the infrared absorption cell, and the infrared receiver being installed at the other end of the infrared absorption cell; the infrared absorption cell is composed of a light source chamber, a gas chamber channel and an infrared-receiver chamber that are sealingly connected in sequence, the light source chamber and the infrared-receiver chamber are respectively provided with a gas inlet and a gas outlet, and the gas inlet is communicated with the target gas or the background gas through a solenoid valve; an infrared light source of the single-channel infrared receiver passes through a constant voltage power supply circuit; and the infrared receiver is connected to a single-chip microcomputer
    Type: Application
    Filed: October 10, 2022
    Publication date: April 13, 2023
    Inventors: Shuangyun LI, Chong LIN, Zhongxiang TANG, Chaofei LI
  • Single-use temperature and humidity data logger
    Patent number: D1085078
    Type: Grant
    Filed: March 13, 2023
    Date of Patent: July 22, 2025
    Inventors: Changdong Chen, Chaofei Li
  • Temperature and humidity recorder
    Patent number: D1113486
    Type: Grant
    Filed: May 20, 2024
    Date of Patent: February 17, 2026
    Inventors: Changdong Chen, Chaofei Li