Patents by Inventor Jyh-Yeong Tsay

Jyh-Yeong Tsay 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).

  • Automated processing liquid drain system
    Patent number: 6148838
    Abstract: The present invention discloses an automated processing liquid drain system that utilizes a series of processing liquid drain tanks and at least two waste collection tanks that are in fluid communication with the processing liquid drain tanks such that when a high liquid level sensor mounted on the drain tank is activated, the spent processing liquid collected from processing machines can be transferred to one of the waste collection tanks and thus preventing overflow in the processing liquid drain tanks.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: November 21, 2000
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Jyh-Yeong Tsay, Yung-Cheng Chen