Patents by Inventor Felipe Sumagaysay

Felipe Sumagaysay 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).

  • PBGA stiffener package
    Patent number: 5972738
    Abstract: A PBGA package includes PBGA member, a stiffener ring, and a stiffener fixture which includes a retaining recess having a floor for receiving the stiffener ring and includes a ledge positioned above the recess floor for receiving the PBGA member. An adhesive layer is applied to the stiffener ring, which is adhered to the PBGA member. The stiffener ring and PBGA member are essentially coplanar to less than 8 mils. A top plate is placed on top of the PBGA member and the ring and member are secured together tightly.
    Type: Grant
    Filed: May 7, 1997
    Date of Patent: October 26, 1999
    Assignee: LSI Logic Corporation
    Inventors: Sutee Vongfuangfoo, Brent Bacher, Felipe Sumagaysay