Patents by Inventor William W. Ip

William W. Ip 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).

  • CMOS eprom sense amplifier
    Patent number: 4725984
    Abstract: Individual CMOS floating-gate memory cells capable of storing data are arranged in an array structure and selected with horizontal and vertical access lines. Current flow through the array cells is measured, amplified, and then compared with an unprogrammed cell using the sense amplifier of the present invention. The sense amplifier tolerates increased variation in the characteristics of programmed or unprogrammed cells and therefore increases the manufacturing yields of the arrays. It additionally achieves fast accessing and sensing of the stored data.
    Type: Grant
    Filed: February 21, 1984
    Date of Patent: February 16, 1988
    Assignee: Seeq Technology, Inc.
    Inventors: William W. Ip, Gust Perlegos
  • Redundancy circuit for use in a semiconductor memory array
    Patent number: 4617651
    Abstract: A semiconductor memory circuit having primary and redundant arrays with the capability of substituting the redundant arrays for defective primary arrays by address location.
    Type: Grant
    Filed: February 22, 1984
    Date of Patent: October 14, 1986
    Assignee: Seeq Technology, Inc.
    Inventors: William W. Ip, Gust Perlegos