Patents by Inventor Curt L. Ellmann

Curt L. Ellmann 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 spatial objects in a defined space
    Patent number: 6920446
    Abstract: A database system is able to represent spatial data with regions in a defined space, such as a z-ordered space. Instead of, or in addition to, a descending decomposition technique (e.g., a top-down decomposition technique) to represent the spatial data with the z-ordered space, the database system is able to use an ascending decomposition technique (e.g., a bottom-up decomposition technique).
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: July 19, 2005
    Assignee: NCR Corporation
    Inventors: Xidong Wang, Michael W. Watzke, Curt L. Ellmann