Patents by Inventor Mingmei LIU

Mingmei LIU 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).

  • Variable capacitor and method for manufacturing the same
    Patent number: 9984830
    Abstract: A variable capacitor, including: two movable plates, two poles, and one rotary shaft. The two movable plates are conductor belts, and the conductor belts are sheathed in insulators. The two poles are conductors, and each is capable of rotating around an axis thereof. First ends of the two movable plates are connected via the insulators and fixed on the rotary shaft, and second ends of the two movable plates are connected to the two poles, respectively. A conductor member of the two movable plates directly contacts the two poles. The lengths of the two movable plates are identical, and are greater than the distance from one pole to the rotary shaft.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: May 29, 2018
    Inventor: Mingmei Liu
  • VARIABLE CAPACITOR AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20170125169
    Abstract: A variable capacitor, including: two movable plates, two poles, and one rotary shaft. The two movable plates are conductor belts, and the conductor belts are sheathed in insulators. The two poles are conductors, and each is capable of rotating around an axis thereof. First ends of the two movable plates are connected via the insulators and fixed on the rotary shaft, and second ends of the two movable plates are connected to the two poles, respectively. A conductor member of the two movable plates directly contacts the two poles. The lengths of the two movable plates are identical, and are greater than the distance from one pole to the rotary shaft.
    Type: Application
    Filed: December 6, 2016
    Publication date: May 4, 2017
    Inventor: Mingmei LIU