Patents by Inventor James Sundquist

James Sundquist 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 OF PERFORMING DESIGN RULE CHECKING
    Publication number: 20050240886
    Abstract: A method of performing latch up check on an integrated circuit (IC) design that comprises rasterizing a conductor region shape and contact shapes and iteratively expanding the contact shapes within the conductor region shape using a cellular algorithm. Direction values for contact cells can be used to limit the number of neighboring cells which must be explored. In every fourth iteration of the expansion process, corner cells may not be expanded. Reachable areas outside of conductors can also be explored.
    Type: Application
    Filed: April 21, 2004
    Publication date: October 27, 2005
    Applicant: International Business Machines Corporation
    Inventors: Henry Bonges, David Reynolds, James Sundquist