Patents by Inventor Alfred Ka On Yue

Alfred Ka On Yue 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).

  • Patent number: 6276598
    Abstract: A method and apparatus are described for placing a plurality of balls in a predetermined array. The method and apparatus are particularly suitable for transferring solder balls to a ball grid array package. In the method the balls are transferred from a supply means 1 to a template 2 in which the balls are positioned in the desired array before being picked up by a ball pick head 3 for transfer to the final position while remaining in the desired array.
    Type: Grant
    Filed: July 13, 1999
    Date of Patent: August 21, 2001
    Assignee: ASM Assembly Automation Ltd.
    Inventors: Chi Wah Cheng, Alfred Ka On Yue, Chiu Fai Wong