Patents by Inventor David Paul Wolff

David Paul Wolff 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).

  • Digital image orientation marker
    Patent number: 6354737
    Abstract: An orientation marker for a digital radiogram formed by a plurality of pixels arrayed along a plurality of rows and columns. The pixels have densities which represent the radiogram optical density at each pixel point, and the densities are represented by digital values. The marker is made by a number of marker pixels arrayed along at least one row and one column of the radiogram. Each of the pixels forming the marker, have a marker pixel digital value which has been selected to form an asymmetrical marker pixel pattern on the radiogram, replacing the original radiogram pixel values.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: March 12, 2002
    Assignee: Direct Radiography Corp.
    Inventors: Mark J. Hufe, David Paul Wolff, Chuande Liu