Patents by Inventor Ganghua Mei

Ganghua Mei 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).

  • Miniaturized microwave cavity for atomic frequency standard
    Patent number: 6225870
    Abstract: The present invention relates to a kind of microwave cavity for atomic frequency standard, which consists of slotted tube, cylindrical cavity body, dielectric ring, heating filament, screw bolt for adjustment of cavity frequency. Its characteristics are listed as follows: 1. There are slots and electrodes at the upside of slotted tube. 2. The slotted tube and the bottom cap of the cavity are made as a whole. 3. The Rb absorption cell is inserted in the slotted tube. 4. The dielectric ring is inserted between the slotted tube and the cylindrical cavity body. 5. There is one or more screw hole in the wall of cylindrical cavity body. 6. One or more screw bolt for adjustment of cavity frequency is installed into the screw hole.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: May 1, 2001
    Assignee: Wuhan Institute of Physics and Mathematics, the Chinese Academy of Sciences
    Inventors: Ganghua Mei, Da Zhong, Shaofeng An, Jinting Liu, Xueren Huang