Patents by Inventor Frank Sauer

Frank Sauer 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).

  • Adaptive detector masking for speed-up of cone beam reconstruction
    Patent number: 5878103
    Abstract: A scanning and data acquisition technique for three dimensional (3D) computerized tomographic (CT) imaging of an object, wherein scanning at a plurality of positions along a source scanning trajectory causes an area detector to acquire cone beam projection data corresponding to a shadow of said object at each of scanning positions and Radon derivative data is calculated by processing line integral values from cone beam projection data. In order to improve the calculation efficiency of the Radon derivative calculation, calculation of the Radon derivative data uses a determination of the left and right boundaries of the shadow for each of the scanning positions, and calculates the Radon derivative data only using projection data from within the determined boundaries.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: March 2, 1999
    Assignee: Siemens Corporate Research, Inc.
    Inventors: Frank Sauer, Supun Samarasekera
  • Pre-calculated hitlist for reducing run-time processing of an exact cone beam reconstruction algorithm
    Patent number: 5862198
    Abstract: A method and apparatus for reconstructing an image of an object using a three dimensional (3D) computerized tomographic (CT) imager having a cone beam radiation source and detector arrangement for acquiring measurement data. Before the acquisition of measurement data during an imaging operation of the apparatus, image reconstruction processing information dependant on the geometric parameters of the imager and required for processing of the acquired measurement data for developing contributions to the final reconstruction of the image, is pre-calculated and stored. During an imaging operation of the apparatus, the acquired measurement data is processed using the pre-calculated image reconstruction processing information for reconstructing the image.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: January 19, 1999
    Assignee: Siemens Corporate Research, Inc.
    Inventors: Supun Samarasekera, Frank Sauer, Kwok Tam
  • Free-space optical interconnection arrangement
    Patent number: 5412506
    Abstract: A diffractive and a refractive microlens component are combined into a doublet lens to obtain imaging properties that are improvements over those achievable using separate components. In one application, diffractive/refractive microlens arrays are arranged to provide a free-space optical permutation interconnect arrangement.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: May 2, 1995
    Assignee: AT&T Corp.
    Inventors: Avi Y. Feldblum, Jurgen Jahns, Casimir R. Nijander, Frank Sauer, Wesley P. Townsend
  • N-Phosphonocarbonyl carbamic acid derivatives as plant growth regulants
    Patent number: 4043793
    Abstract: This invention relates to novel carbonyl phosphonates, their agricultural compositions, and to the method of utilizing such compounds for retarding the growth of plants, especially woody plants.
    Type: Grant
    Filed: May 21, 1976
    Date of Patent: August 23, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Richard Frank Sauers
  • N-Phosphonocarbonyl carbamic acid derivatives as plant growth regulants
    Patent number: 4043794
    Abstract: This invention relates to the use of carbonyl phosphonates for retarding the growth of plants, especially woody plants and agricultural compositions containing such phosphonates.
    Type: Grant
    Filed: May 21, 1976
    Date of Patent: August 23, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Richard Frank Sauers