Patents by Inventor Kenneth J. Hofstetter

Kenneth J. Hofstetter 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).

  • Patent number: 7351982
    Abstract: A portable, hand held, multi-sensor radiation detector is disclosed. The detection apparatus has a plurality of spaced sensor locations which are contained within a flexible housing. The detection apparatus, when suspended from an elevation, will readily assume a substantially straight, vertical orientation and may be used to monitor radiation levels from shipping containers. The flexible detection array can also assume a variety of other orientations to facilitate any unique container shapes or to conform to various physical requirements with respect to deployment of the detection array. The output of each sensor within the array is processed by at least one CPU which provides information in a usable form to a user interface. The user interface is used to provide the power requirements and operating instructions to the operational components within the detection array.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: April 1, 2008
    Assignee: Washington Savannah River Company LLP
    Inventors: Kenneth J Hofstetter, Charles K Fulghum, Lawrence J Harpring, Russell K Huffman, Donald L Varble
  • Patent number: 6549845
    Abstract: A system to determine the location of a person within a structure utilizes a magnetometer, magnets, pressure sensors and a CPU to calculate the length and direction of each step. The data may be displayed to the wearer, preferably on a map or floorplan and may be broadcast to persons outside the structure.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: April 15, 2003
    Assignee: Westinghouse Savannah River Company
    Inventors: Robert F. Eakle, Jr., Kenneth J. Hofstetter
  • Publication number: 20020091482
    Abstract: A system to determine the location of a person within a structure utilizes a magnetometer, magnets, pressure sensors and a CPU to calculate the length and direction of each step. The data may be displayed to the wearer, preferably on a map or floorplan and may be broadcast to persons outside the structure.
    Type: Application
    Filed: January 10, 2001
    Publication date: July 11, 2002
    Inventors: Robert F. Eakle, Kenneth J. Hofstetter
  • Patent number: 5852790
    Abstract: A global positioning system recorder (GPSR) is disclosed in which operational parameters and recorded positional data are stored on a transferable memory element. Through this transferrable memory element, the user of the GPSR need have no knowledge of GPSR devices other than that the memory element needs to be inserted into the memory element slot and the GPSR must be activated. The use of the data element also allows for minimal downtime of the GPSR and the ability to reprogram the GPSR and download data therefrom, without having to physically attach it to another computer.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: December 22, 1998
    Assignee: Westinghouse Savannah River Company
    Inventors: David W. Hayes, Kenneth J. Hofstetter, Robert F. Eakle, Jr., George E. Reeves
  • Patent number: 5336889
    Abstract: A gamma radiation detector and a radioluminiscent composition for use therein. The detector includes a radioluminscent composition that emits light in a characteristic wavelength region when exposed to gamma radiation, and means for detecting said radiation. The composition contains a scintillant such as anglesite (PbSO.sub.4) or cerussite (PbCO.sub.3) incorporated into an inert, porous glass matrix via a sol-gel process. Particles of radiation-sensitive scintillant are added to, a sol solution. The mixture is polymerized to form a gel, then dried under conditions that preserve the structural integrity and radiation sensitivity of the scintillant. The final product is a composition containing the uniformly-dispersed scintillant in an inert, optically transparent and highly porous matrix. The composition is chemically inert and substantially impervious to environmental conditions including changes in temperature, air pressure, and so forth.
    Type: Grant
    Filed: January 4, 1993
    Date of Patent: August 9, 1994
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Kenneth J. Hofstetter