Patents by Inventor Steven Liew

Steven Liew 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).

  • Zig-zagged plating bus lines
    Patent number: 6319418
    Abstract: A new pattern is provided for the bus lines that are used to facilitate plating of layers of electrical lines that form a Printed Circuit Board. Where Prior Art bus lines have a straight-line geometry, the bus lines of the invention have any geometry that is not a straight-line geometry. The geometry of the bus lines of the invention can be of any design as long as this design allows for interrupted cutting of the bus line, that is the cutting tool does not, during the process of cutting the bus line, make constant and continuous contact with the bus line.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: November 20, 2001
    Assignee: St. Assembly Test Services Pte Ltd.
    Inventors: Arvin Verdeflor, Albert Loh, Steven Liew, William S. Villaviray