Patents by Inventor Jenn-Yuh Ke

Jenn-Yuh Ke 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).

  • Timer device
    Patent number: 4720821
    Abstract: An improved timer device which incorporates an electronic circuit to offer the user two selectable timer modes, either one-time timing mode or repeat-cycle timing mode. The cycle interval under the a repeat-cycle timing mode can be presetted by the user. The timer device comprises two AC power control circuits to control two loads concurrently.
    Type: Grant
    Filed: February 5, 1986
    Date of Patent: January 19, 1988
    Inventor: Jenn-Yuh Ke