Patents by Inventor Kuan-Cheng Chuang

Kuan-Cheng Chuang 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).

  • Patent number: 6229488
    Abstract: An antenna for receiving signals from GPS and GSM comprises a cylindrical body formed of dielectric material, an axial central through hole, a first conductor layer coated on the bore of the through hole, a ground conductor layer coated on the bottom of the body being in contact with the first conductor layer, an insulator fitted into the through hole, a feeding pin provided in the center of the insulator with both ends extended above the top and the bottom of the body wherein the end atop the body being attached to a helical antenna, and a patch antenna formed on the circumferential surface of the body such that the antenna can receive signals from GPS and GSM respectively. This greatly reduces the size of antenna as well as reduces the manufacturing and transporting costs.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: May 8, 2001
    Assignee: Emtac Technology Corp.
    Inventors: Huey-Jen Lin, Kuan-Cheng Chuang