Patents by Inventor Seow Hoon Tan

Seow Hoon Tan 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).

  • 3-D lead inspection
    Patent number: 6532063
    Abstract: A semiconductor lead inspection device includes a camera and an illumination source for backlighting the leads of the semiconductor device to form an image in the camera. The camera and the illumination device are arranged on optical paths which alternatively pass through or are reflected by a beamsplitter. A surface is illuminated to backlight the leads and a light deflecting device is arranged for deflecting the backlit image of the semiconductor leads to form an image in the camera.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: March 11, 2003
    Assignee: Semiconductor Technologies & Instruments
    Inventors: Seow Hoon Tan, Sreenivas Rao