Patents by Inventor John C. Whitson

John C. Whitson 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).

  • Individually addressable cathodes with integrated focusing stack or detectors
    Patent number: 6917043
    Abstract: Systems and method are described for addressable field emission array (AFEA) chips. A plurality of individually addressable cathodes are integrated with an electrostatic focusing stack and/or a plurality of detectors on the addressable field emission array. The systems and methods provide advantages including the avoidance of space-charge blow-up.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: July 12, 2005
    Assignee: UT-Battelle LLC
    Inventors: Clarence E. Thomas, Larry R. Baylor, Edgar Voelkl, Michael L. Simpson, Michael J. Paulus, Douglas Lowndes, John Whealton, John C. Whitson, John B. Wilgen
  • Method for tracking encapsulated software over a network of computers
    Publication number: 20040015601
    Abstract: In a method for tracking carrier documents containing an encapsulated software module, a model is created from a directed graph. The nodes of the directed graph include a plurality of computer clusters each having at least one computer, and the arcs of the directed graph represent the transfer paths of carrier documents. The time of day and location of the nodes are used to establish expected traffic values. Expected traffic values are compared to actual traffic values in order to determine inappropriate traffic and to extract transfer paths of interest that may be transferring a carrier document containing an encapsulated software module. Notices regarding the propagation of an undesirable carrier document containing an encapsulated software module are issued, or preventative steps, such as blocking messages from certain nodes and transfer paths, may be implemented to prevent further dissemination of the undesirable carrier documents.
    Type: Application
    Filed: July 17, 2002
    Publication date: January 22, 2004
    Inventor: John C. Whitson
  • Electrostatically focused addressable field emission array chips (AFEA's) for high-speed massively parallel maskless digital e-beam direct write lithography and scanning electron microscopy
    Publication number: 20030038244
    Abstract: Systems and methods are described for addressable field emission array (AFEA) chips. A method of operating an addressable field-emission array, includes: generating a plurality of electron beams from a pluralitly of emitters that compose the addressable field-emission array; and focusing at least one of the plurality of electron beams with an on-chip electrostatic focusing stack. The systems and methods provide advantages including the avoidance of space-charge blow-up.
    Type: Application
    Filed: September 30, 2002
    Publication date: February 27, 2003
    Inventors: Clarence E. Thomas, Larry R. Baylor, Edgar Voelkl, Michael L. Simpson, Michael J. Paulus, Douglas Lowndes, John H. Whealton, John C. Whitson, John B. Wilgen
  • Electrostatically focused addressable field emission array chips (AFEA's) for high-speed massively parallel maskless digital E-beam direct write lithography and scanning electron microscopy
    Patent number: 6498349
    Abstract: Systems and methods are described for addressable field emission array (AFEA) chips. A method of operating an addressable field-emission array, includes: generating a plurality of electron beams from a pluralitly of emitters that compose the addressable field-emission array; and focusing at least one of the plurality of electron beams with an on-chip electrostatic focusing stack. The systems and methods provide advantages including the avoidance of space-charge blow-up.
    Type: Grant
    Filed: August 5, 1999
    Date of Patent: December 24, 2002
    Assignee: UT-Battelle
    Inventors: Clarence E. Thomas, Larry R. Baylor, Edgar Voelkl, Michael L. Simpson, Michael J. Paulus, Douglas H. Lowndes, John H. Whealton, John C. Whitson, John B. Wilgen
  • School bus emergency lamp
    Patent number: D401368
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: November 17, 1998
    Inventors: Joseph E. Baader, John C. Whitson