Patents by Inventor Ming H. Yeh

Ming H. Yeh 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).

  • Coaxial cable output terminal safety plug device
    Patent number: 5106312
    Abstract: A coaxial cable output terminal safety plug device which is screwed with a conventional coaxial cable output terminal to prevent unauthorized use, wherein the safety plug device includes a hollow plug receiving a plug seat therein, and if the plug is rotated alone, then the plug seat can not be driven and screwed and therefore a special tool is used to drive the plug and screw or unscrew the same from the output terminal, the plug seat being formed with an output hole for insertion of a resistor for matching impedance.
    Type: Grant
    Filed: June 27, 1991
    Date of Patent: April 21, 1992
    Inventor: Ming H. Yeh