Patents by Inventor Chong Foo

Chong Foo 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).

  • Publication number: 20050018403
    Abstract: According to one aspect of the invention, a method and apparatus for handling semiconductor packages is provided. The semiconductor packages include package substrates with a plurality contact formations on a bottom surface thereof. The packages are fed into a handling machine, which includes a CCD camera. The contact formations are imaged by the CDD camera after the semiconductor packages are picked from the feeder. The captured image is relatively low resolution and is made of relatively large pixels. A computer approximates a center of the contact formations based on the captured images and places the packages on a circuit board in the handling machine.
    Type: Application
    Filed: June 25, 2003
    Publication date: January 27, 2005
    Inventors: Chong Foo, Booh Yeoh, Kok Gan