Patents by Inventor David R Buerer

David R Buerer 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).

  • Entity lookup system
    Patent number: 7650345
    Abstract: In an electronic document such as a map, an entity lookup system associates primitive data with entity data though parallel or corresponding grids of a primitive quad-tree and an entity quad-tree. A key is assigned to grids in the primitive quad-tree in association to particular grids in the entity quad-tree.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: January 19, 2010
    Assignee: Microsoft Corporation
    Inventors: David R Buerer, Duncan M Lawler