Patents by Inventor Yongwei Gu

Yongwei Gu 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).

  • High intensity discharge lamps, arc tubes and methods of manufacture
    Patent number: 6517404
    Abstract: A tipless arc tube for a high intensity discharge lamp and method of manufacture wherein the arc tube may remain open to an uncontrolled atmosphere during the step of hermetically scaling the arc tube. The novel arc tube and method obviate the need to perform any process steps within a controlled atmosphere. The pressure of the fill gas sealed within the arc tube may be controlled by controlling the temperature of the fill gas during the step of hermetically sealing the arc tube. The novel arc tube and method obviate the need to use a pump to control the fill gas pressure.
    Type: Grant
    Filed: May 30, 2001
    Date of Patent: February 11, 2003
    Assignee: Advanced Lighting Technologies, Inc.
    Inventors: Abbas Lamouri, Juris Sulcs, Yongwei Gu