Patents by Inventor Su Yol Yoo

Su Yol Yoo 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: 6867071
    Abstract: A leadframe comprising a frame body having four peripheral sides, each adjacent pair of which collectively defines a frame corner. Disposed within a central space or opening defined by the frame body is a die paddle including four peripheral edge segments, each adjacent pair of which collectively define a paddle corner. The leadframe also includes a plurality of tie bars, each of which comprises a first portion extending from a respective paddle corner of the die paddle and a second portion which extends angularly from the first portion and perpendicularly into connection with one of the sides of the frame body. Connected to and extending from the sides of the frame body toward and in spaced relation to respective ones of the peripheral edge segments of the die paddle are a plurality of leads. Additionally, connected to and extending from the sides of the frame body in close proximity to respective ones of the frame corners are a plurality of corner leads.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: March 15, 2005
    Assignee: Amkor Technology, Inc.
    Inventors: Choon Heung Lee, Sung Sik Jang, Su Yol Yoo