Patents by Inventor John Fredrick Shaeffer

John Fredrick Shaeffer 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).

  • Systems and methods for analysis and design of radiating and scattering objects
    Patent number: 8725464
    Abstract: Methods and apparatus for analysis and design of radiation and scattering objects are disclosed. In one embodiment, unknown sources are spatially grouped to produce a system interaction matrix with block factors of low rank within a given error tolerance and the unknown sources are determined from compressed forms of the factors.
    Type: Grant
    Filed: October 9, 2010
    Date of Patent: May 13, 2014
    Inventor: John Fredrick Shaeffer
  • Systems and methods for analysis and design of radiating and scattering objects
    Patent number: 8209138
    Abstract: Methods and apparatus for analysis and design of radiation and scattering objects are disclosed. In one embodiment, unknown sources are spatially grouped to produce a system interaction matrix with block factors of low rank within a given error tolerance and the unknown sources are determined from compressed forms of the factors.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: June 26, 2012
    Inventor: John Fredrick Shaeffer
  • SYSTEMS AND METHODS FOR ANALYSIS AND DESIGN OF RADIATING AND SCATTERING OBJECTS
    Publication number: 20110071797
    Abstract: Methods and apparatus for analysis and design of radiation and scattering objects are disclosed. In one embodiment, unknown sources are spatially grouped to produce a system interaction matrix with block factors of low rank within a given error tolerance and the unknown sources are determined from compressed forms of the factors.
    Type: Application
    Filed: October 9, 2010
    Publication date: March 24, 2011
    Inventor: John Fredrick Shaeffer
  • Systems and methods for analysis and design of radiating and scattering objects
    Patent number: 7844407
    Abstract: Methods and apparatus for analysis and design of radiation and scattering objects are disclosed. In one embodiment, unknown sources are spatially grouped to produce a system interaction matrix with block factors of low rank within a given error tolerance and the unknown sources are determined from compressed forms of the factors.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: November 30, 2010
    Inventor: John Fredrick Shaeffer
  • Systems and methods for analysis and design of radiating and scattering objects
    Patent number: 7742886
    Abstract: Methods and apparatus for analysis and design of radiation and scattering objects are disclosed. In one embodiment, unknown sources are spatially grouped to produce a system interaction matrix with block factors of low rank within a given error tolerance and the unknown sources are determined from compressed forms of the factors.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: June 22, 2010
    Inventor: John Fredrick Shaeffer
  • Systems and methods for analysis and design of radiating and scattering objects
    Publication number: 20090132187
    Abstract: Methods and apparatus for analysis and design of radiation and scattering objects are disclosed. In one embodiment, unknown sources are spatially grouped to produce a system interaction matrix with block factors of low rank within a given error tolerance and the unknown sources are determined from compressed forms of the factors.
    Type: Application
    Filed: November 16, 2007
    Publication date: May 21, 2009
    Inventor: John Fredrick Shaeffer