Patents by Inventor Danny Keogan

Danny Keogan 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).

  • Considering mask writer properties during the optical proximity correction process
    Patent number: 6792592
    Abstract: One embodiment of the invention provides a system that performs optical proximity correction in a manner that accounts for properties of a mask writer that generates a mask used in printing an integrated circuit. During operation, the system receives an input layout for the integrated circuit. The system also receives a set of mask writer properties that specify how the mask writer prints features. Next, the system performs an optical proximity correction process on the input layout to produce an output layout that includes a set of optical proximity corrections. This optical proximity correction process accounts for the set of mask writer properties in generating the set of optical proximity corrections, so that the mask writer can accurately produce the set of optical proximity corrections.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: September 14, 2004
    Assignee: Numerical Technologies, Inc.
    Inventors: Danny Keogan, Christophe Pierrat
  • Considering mask writer properties during the optical proximity correction process
    Publication number: 20040044984
    Abstract: One embodiment of the invention provides a system that performs optical proximity correction in a manner that accounts for properties of a mask writer that generates a mask used in printing an integrated circuit. During operation, the system receives an input layout for the integrated circuit. The system also receives a set of mask writer properties that specify how the mask writer prints features. Next, the system performs an optical proximity correction process on the input layout to produce an output layout that includes a set of optical proximity corrections. This optical proximity correction process accounts for the set of mask writer properties in generating the set of optical proximity corrections, so that the mask writer can accurately produce the set of optical proximity corrections.
    Type: Application
    Filed: August 30, 2002
    Publication date: March 4, 2004
    Applicant: Numerical Technologies, Inc.
    Inventors: Danny Keogan, Christophe Pierrat