Patents by Inventor Gary W. Nunn

Gary W. Nunn 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 and system for implementing metal fill
    Patent number: 7661078
    Abstract: Disclosed is an improved method and system for implementing metal fill for an integrated circuit design. When an engineering change order is implemented, the existing dummy metal fill geometries are initially ignored when modifying the layout, even if this results in shorts and/or other DRC violations. Once the ECO changes have been implemented, those violations caused by interaction between the changes and the metal fill are repaired afterwards.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: February 9, 2010
    Assignee: Cadence Design Systems, Inc.
    Inventors: David C. Noice, William Kao, Inhwan Seo, Xiaopeng Dong, Gary W. Nunn