Patents by Inventor Wei Zan

Wei Zan 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).

  • Liquid storage device
    Patent number: 8794257
    Abstract: The present invention provides a liquid storage device relates to the field of semiconductor manufacturing technology comprising: a liquid storage tank, a liquid intake tube, a liquid discharge tube and a gas discharge tube; the liquid intake tube, the liquid discharge tube and the gas discharge tube are all connected with the liquid storage tank; the liquid storage device also comprises a gas compensating tube connected with the liquid storage tank; the gas compensating tube comprises a differential pressure mechanism and a gas storage tank; one end of the differential pressure mechanism is connected with the liquid storage tank, and the other end is connected with the gas storage tank; the differential pressure mechanism is used for controlling the connection or disconnection between the liquid storage tank and the gas storage tank according to the pressure difference therebetween.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: August 5, 2014
    Assignee: Beijing Sevenstar Electronics Co., Ltd.
    Inventors: Jinqun He, Likun Pei, Yi Wu, Wei Zan
  • LIQUID STORAGE DEVICE
    Publication number: 20130174919
    Abstract: The present invention provides a liquid storage device relates to the field of semiconductor manufacturing technology comprising: a liquid storage tank, a liquid intake tube, a liquid discharge tube and a gas discharge tube; the liquid intake tube, the liquid discharge tube and the gas discharge tube are all connected with the liquid storage tank; the liquid storage device also comprises a gas compensating tube connected with the liquid storage tank; the gas compensating tube comprises a differential pressure mechanism and a gas storage tank; one end of the differential pressure mechanism is connected with the liquid storage tank, and the other end is connected with the gas storage tank; the differential pressure mechanism is used for controlling the connection or disconnection between the liquid storage tank and the gas storage tank according to the pressure difference therebetween.
    Type: Application
    Filed: June 13, 2012
    Publication date: July 11, 2013
    Applicant: BEIJING SEVENSTAR ELECTRONICS CO.,LTD.
    Inventors: Jinqun He, Likun Pei, Yi Wu, Wei Zan