Patents by Inventor Funming Li

Funming 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).

  • Method and apparatus for reduction of light intensity decay in optical pumping devices
    Patent number: 5457430
    Abstract: Optical pumping devices use light reflected from reflecting surfaces to provide a portion of the light incident on the photodetector. Conventional optical pumping devices experience a decay, over time, of the initial light intensity incident on the photodetector. The optical pumping device of the invention experiences reduced light intensity decay. The invention passivates the reflecting surfaces to eliminate tarnish and oxidation by pretarnishing the surfaces or covering the surfaces with a material whose reflectivity does not vary over time, such as gold.
    Type: Grant
    Filed: November 10, 1994
    Date of Patent: October 10, 1995
    Assignee: Ball Corporation
    Inventors: Thomas C. English, Funming Li, Ronald E. White, James A. Carmichael