Patents by Inventor Stephen I. Runyon

Stephen I. Runyon 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).

  • Method for implementing overlay-based modification of VLSI design layout
    Patent number: 7490308
    Abstract: A method of modifying a VLSI layout for performance optimization includes defining a revised set of ground rules for a plurality of original device shapes to be modified and flattening the plurality of original device shapes to a prime cell. A layout optimization operation is performed on the flattened device shapes, based on the revised set of ground rules, so as to create a plurality of revised device shapes. An overlay cell is then created from a difference between the revised device shapes and the original device shapes.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: February 10, 2009
    Assignee: International Business Machines Corporation
    Inventors: Christopher J. Gonzalez, Michael S. Gray, Matthew T. Guzowski, Jason D. Hibbeler, Stephen I. Runyon, Xiaoyun K. Wu