Patents by Inventor Karen F. Vahtra

Karen F. Vahtra 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).

  • Representing the design of a sub-module in a hierarchical integrated circuit design and analysis system
    Patent number: 7103863
    Abstract: A method for modeling integrated circuit designs in a hierarchical design automation system which utilizes a block abstraction including therein set of all database objects (cells, nets, wires, vias, and blockages) that are necessary to achieve accurate placement, routing, extraction, simulation, and verification of the block's ancestors in the hierarchy.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: September 5, 2006
    Assignee: Magma Design Automation, Inc.
    Inventors: Michael A. Riepe, Robert M. Swanson, Timothy M. Burks, Lukas van Ginneken, Karen F. Vahtra, Hamid Savoj