Patents by Inventor James Hirvonen

James Hirvonen 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).

  • Publication number: 20110211054
    Abstract: A system and method for obtaining biometric imagery such as iris imagery from large capture volumes is disclosed wherein a substantially rotationally symmetric mirror such as a cone or sphere is rotated at a constant velocity about a central axis.
    Type: Application
    Filed: February 16, 2010
    Publication date: September 1, 2011
    Applicant: Global Rainmakers, Inc.
    Inventors: Keith J. Hanna, George Herbert Needham Riddle, David James Hirvonen, David Hammond Sliney
  • Patent number: 7669358
    Abstract: A dynamic process for increasing the wear life of ferrous articles subjected to a high-temperature environment created by combustion of a propellant or fuel comprises selecting the propellant or fuel so that its combustion products include relatively large amounts of nitrogen, which nitrogen forms a protective nitride layer on the surface of the ferrous article. Disclosed is a specific embodiment of the invention for prolonging the wear life of gun barrels.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: March 2, 2010
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Paul J. Conroy, Charles S. Leveritt, John D. Demaree, James Hirvonen
  • Patent number: 7191558
    Abstract: A dynamic process for increasing the wear life of ferrous articles subjected to a high-temperature environment created by combustion of a propellant or fuel comprises selecting the propellant or fuel so that its combustion products include relatively large amounts of nitrogen, which nitrogen forms a protective nitride layer on the surface of the ferrous article. Disclosed is a specific embodiment of the invention for prolonging the wear life of gun barrels.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: March 20, 2007
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Paul J. Conroy, Charles S. Leveritt, John D. Demaree, James Hirvonen
  • Patent number: 7086846
    Abstract: An electro spinning process yields uniform, nanometer diameter polymer filaments. A thread-forming polymer is extruded through an anodically biased die orifice and drawn through an anodically biased electrostatic field. A continuous polymer filament is collected on a grounded collector. The polymer filament is linearly oriented and highly uniform in quality. The filament is particularly useful for weaving body armor, for chemical/biological protective clothing, as a biomedical tissue growth support, for fabricating micro sieves and for microelectronics fabrication.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: August 8, 2006
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: James Kleinmeyer, Joseph Deitzel, James Hirvonen
  • Publication number: 20040061253
    Abstract: An electro spinning process yields uniform, nanometer diameter polymer filaments. A thread-forming polymer is extruded through an anodically biased die orifice and drawn through an anodically biased electrostatic field. A continuous polymer filament is collected on a grounded collector. The polymer filament is linearly oriented and highly uniform in quality. The filament is particularly useful for weaving body armor, for chemical/biological protective clothing, as a biomedical tissue growth support, for fabricating micro sieves and for microelectronics fabrication.
    Type: Application
    Filed: October 31, 2003
    Publication date: April 1, 2004
    Inventors: James Kleinmeyer, Joseph Deitzel, James Hirvonen
  • Patent number: 6641773
    Abstract: An electro spinning process yields uniform, nanometer diameter polymer filaments. A thread-forming polymer is extruded through an anodically biased die orifice and drawn through an anodically biased electrostatic field. A continuous polymer filament is collected on a grounded collector. The polymer filament is linearly oriented and highly uniform in quality. The filament is particularly useful for weaving body armor, for chemical/biological protective clothing, as a biomedical tissue growth support, for fabricating micro sieves and for microelectronics fabrication.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: November 4, 2003
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: James Kleinmeyer, Joseph Deitzel, James Hirvonen
  • Patent number: 6597818
    Abstract: A system and method for accurately mapping between image coordinates and geo-coordinates, called geo-spatial registration. The system utilizes the imagery and terrain information contained in the geo-spatial database to precisely align geodetically calibrated reference imagery with an input image, e.g., dynamically generated video images, and thus achieve a high accuracy identification of locations within the scene. When a sensor, such as a video camera, images a scene contained in the geo-spatial database, the system recalls a reference image pertaining to the imaged scene. This reference image is aligned very accurately with the sensor's images using a parametric transformation. Thereafter, other information that is associated with the reference image can easily be overlaid upon or otherwise associated with the sensor imagery.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: July 22, 2003
    Assignee: Sarnoff Corporation
    Inventors: Rakesh Kumar, Stephen Charles Hsu, Keith Hanna, Supun Samarasekera, Richard Patrick Wildes, David James Hirvonen, Thomas Edward Klinedinst, William Brian Lehman, Bodgan Matei, Wenyi Zhao, Barbara Levienaise-Obadia
  • Publication number: 20020089094
    Abstract: An electro spinning process yields uniform, nanometer diameter polymer filaments. A thread-forming polymer is extruded through an anodically biased die orifice and drawn through an anodically biased electrostatic field. A continuous polymer filament is collected on a grounded collector. The polymer filament is linearly oriented and highly uniform in quality. The filament is particularly useful for weaving body armor, for chemical/biological protective clothing, as a biomedical tissue growth support, for fabricating micro sieves and for microelectronics fabrication.
    Type: Application
    Filed: January 10, 2001
    Publication date: July 11, 2002
    Inventors: James Kleinmeyer, Joseph Deitzel, James Hirvonen
  • Publication number: 20010038718
    Abstract: A system and method for accurately mapping between image coordinates and geo-coordinates, called geo-spatial registration. The system utilizes the imagery and terrain information contained in the geo-spatial database to precisely align geodetically calibrated reference imagery with an input image, e.g., dynamically generated video images, and thus achieve a high accuracy identification of locations within the scene. When a sensor, such as a video camera, images a scene contained in the geo-spatial database, the system recalls a reference image pertaining to the imaged scene. This reference image is aligned very accurately with the sensor's images using a parametric transformation. Thereafter, other information that is associated with the reference image can easily be overlaid upon or otherwise associated with the sensor imagery.
    Type: Application
    Filed: March 9, 2001
    Publication date: November 8, 2001
    Inventors: Rakesh Kumar, Stephen Charles Hsu, Keith Hanna, Supun Samarasekera, Richard Patrick Wildes, David James Hirvonen, Thomas Edward Klinedinst, William Brian Lehman, Bodgan Matei, Wenyi Zhao, Barbara Levienaise-Obadia