Patents by Inventor R. Gregory Downing
R. Gregory Downing 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: 11733409Abstract: A neutron imaging system includes a neutron generator, a flight tube, a stage, a neutron imaging module, and a neutron shield. The flight tube enables neutrons from the neutron generator to enter the flight tube through an input opening and exit through an output opening. The stage supports a sample object to receive neutrons that pass through the entire length of the flight tube and the output opening. The neutron imaging module has a neutron-sensitive component that receives neutrons that pass through the sample object and generates neutron detection signals. The neutron shield surrounds at least a portion of the flight tube and the neutron imaging module to block at least a portion of stray neutrons that travel toward the neutron-sensitive component of the neutron imaging module, in which the stray neutrons do not enter the flight tube through the input opening of the flight tube.Type: GrantFiled: May 9, 2022Date of Patent: August 22, 2023Assignee: Photonis Scientific, Inc.Inventors: Brian White, W. Bruce Feller, R. Gregory Downing
-
Publication number: 20220342097Abstract: A neutron imaging system includes a neutron generator, a flight tube, a stage, a neutron imaging module, and a neutron shield. The neutron generator is configured to provide neutrons. The flight tube has an input opening, an output opening, and a flight tube wall extending from the input opening to the output opening. The flight tube is positioned relative to the neutron generator to enable neutrons from the neutron generator to enter the flight tube through the input opening and exit the flight tube through the output opening. The stage is configured to support a sample object at a position to receive neutrons that pass through the entire length of the flight tube and then pass through the output opening of the flight tube. The neutron imaging module has a neutron-sensitive component that is sensitive to neutrons and configured to receive neutrons that pass through the sample object and generate neutron detection signals that can be used to generate an image or video of the sample object.Type: ApplicationFiled: May 9, 2022Publication date: October 27, 2022Inventors: Brian White, W. Bruce Feller, R. Gregory Downing
-
Patent number: 11327185Abstract: A neutron imaging system includes a neutron generator, a flight tube, a stage, a neutron imaging module, and a neutron shield. The flight tube enables neutrons from the neutron generator to enter the flight tube through an input opening and exit through an output opening. The stage supports a sample object to receive neutrons that pass through the entire length of the flight tube and the output opening. The neutron imaging module has a neutron-sensitive component that receives neutrons that pass through the sample object and generates neutron detection signals. The neutron shield surrounds at least a portion of the flight tube and the neutron imaging module to block at least a portion of stray neutrons that travel toward the neutron-sensitive component of the neutron imaging module, in which the stray neutrons do not enter the flight tube through the input opening of the flight tube.Type: GrantFiled: February 19, 2020Date of Patent: May 10, 2022Assignee: Photonis Scientific, Inc.Inventors: Brian White, W. Bruce Feller, R. Gregory Downing
-
Publication number: 20220028571Abstract: Disclosed herein is a device that includes at least one functional semiconductor element; and static electric field source(s) associated with the at least one functional semiconductor element, the static electric field source(s) comprising at least one electret component and having a heterogeneous charge distribution. Also disclosed herein is a device includes a functional semiconductor element; a static electric field source comprising at least one electret element, the static electric field source imparting a static electric field to the functional semiconductor element; and at least one nuclear radiation source for continuously imparting nuclear beta radiation to the at least one electret element and/or the functional semiconductor element. Use of at least a radioactive beta source for replenishing charge in an electret, as well as use of at least a radioactive beta source for simultaneously replenishing charge in an electret and modifying charge mobility of a semiconductor material, are also disclosed.Type: ApplicationFiled: July 21, 2021Publication date: January 27, 2022Applicant: AwareAbility Technologies, LLCInventor: R Gregory Downing
-
Publication number: 20200309973Abstract: A neutron imaging system includes a neutron generator, a flight tube, a stage, a neutron imaging module, and a neutron shield. The neutron generator is configured to provide neutrons. The flight tube has an input opening, an output opening, and a flight tube wall extending from the input opening to the output opening. The flight tube is positioned relative to the neutron generator to enable neutrons from the neutron generator to enter the flight tube through the input opening and exit the flight tube through the output opening. The stage is configured to support a sample object at a position to receive neutrons that pass through the entire length of the flight tube and then pass through the output opening of the flight tube. The neutron imaging module has a neutron-sensitive component that is sensitive to neutrons and configured to receive neutrons that pass through the sample object and generate neutron detection signals that can be used to generate an image or video of the sample object.Type: ApplicationFiled: February 19, 2020Publication date: October 1, 2020Inventors: Brian White, W. Bruce Feller, R. Gregory Downing
-
Patent number: 8884237Abstract: In exemplary embodiments, an apparatus, includes a first electrode, a second electrode, a first polygonal channel extending between the electrodes, the first channel having a first side having a center, and a second polygonal channel extending between the electrodes, the second channel having a second side contacting the first side, the second side having a center, wherein the center of the first side and the center of the second side are non-collinear in a direction perpendicular to a surface of the first side, and wherein the first and second channels do not have square cross sections perpendicular to longitudinal axes of the channels.Type: GrantFiled: February 11, 2009Date of Patent: November 11, 2014Assignee: Nova Scientific, Inc.Inventors: R. Gregory Downing, Bruce Feller
-
Patent number: 8221181Abstract: An electron multiplier can be fabricated by depositing an electron emissive material on a reticulated substrate, and forming the reticulated substrate into the electron multiplier.Type: GrantFiled: June 20, 2011Date of Patent: July 17, 2012Assignee: Nova Scientific, Inc.Inventors: R. Gregory Downing, W. Bruce Feller, P. Brian White, Paul L. White
-
Publication number: 20110244753Abstract: An electron multiplier can be fabricated by depositing an electron emissive material on a reticulated substrate, and forming the reticulated substrate into the electron multiplier.Type: ApplicationFiled: June 20, 2011Publication date: October 6, 2011Inventors: R. Gregory Downing, W. Bruce Feller, P. Brian White, Paul L. White
-
Patent number: 7990032Abstract: An electron multiplier can be fabricated by depositing an electron emissive material on a reticulated substrate, and forming the reticulated substrate into the electron multiplier.Type: GrantFiled: March 23, 2009Date of Patent: August 2, 2011Assignee: Nova Scientific, Inc.Inventors: R. Gregory Downing, W. Bruce Feller, P. Brian White, Paul L. White
-
Publication number: 20110006206Abstract: In exemplary embodiments, an apparatus, includes a first electrode, a second electrode, a first polygonal channel extending between the electrodes, the first channel having a first side having a center, and a second polygonal channel extending between the electrodes, the second channel having a second side contacting the first side, the second side having a center, wherein the center of the first side and the center of the second side are non-collinear in a direction perpendicular to a surface of the first side, and wherein the first and second channels do not have square cross sections perpendicular to longitudinal axes of the channels.Type: ApplicationFiled: February 11, 2009Publication date: January 13, 2011Inventors: R. Gregory Downing, Bruce Feller
-
Publication number: 20090179542Abstract: An electron multiplier can be fabricated by depositing an electron emissive material on a reticulated substrate, and forming the reticulated substrate into the electron multiplier.Type: ApplicationFiled: March 23, 2009Publication date: July 16, 2009Inventors: R. Gregory Downing, W. Bruce Feller, P. Brian White, Paul L. White
-
Patent number: 7508131Abstract: Electron multipliers, radiation detectors, and methods of making the multipliers and detectors are described. In some embodiments an electron multiplier has a structure including a plurality of interconnected fibers having electron-emissive surfaces, the fibers having a width to thickness aspect ratio greater than one.Type: GrantFiled: February 5, 2007Date of Patent: March 24, 2009Assignee: Nova Scientific, Inc.Inventors: R. Gregory Downing, W. Bruce Feller, P. Brian White, Paul L. White
-
Patent number: 7394187Abstract: An electron multiplier includes a plate having a plurality of interconnected particles, e.g., fibers, having electron-emissive surfaces. The particles may include a neutron-sensitive and/or neutron reactive material, such as 6Li, 10B, 155Gd, 157Gd,—and/or hydrogenous compounds, in excess of their natural abundance. The particles may include an X-ray sensitive and/or X-ray reactive material, such as Pb.Type: GrantFiled: November 23, 2004Date of Patent: July 1, 2008Assignee: Nova Scientific, Inc.Inventors: P. Brian White, Paul L. White, R. Gregory Downing, W. Bruce Feller
-
Patent number: 7333701Abstract: An apparatus including a microchannel plate having a structure that defines multiple microchannels. The structure includes multiple claddings that form the walls of the microchannels, each of the claddings including a semiconducting layer. The claddings are surrounded by a glass having a lower percentage of materials having atomic numbers higher than 34 as compared to the cladding. The glass has a higher percentage of neutron absorbing material than the cladding, the neutron absorbing material capable of capturing neutrons in reactions that result in secondary electron emissions in the microchannels.Type: GrantFiled: September 18, 2006Date of Patent: February 19, 2008Assignee: Nova Scientific, Inc.Inventors: W. Bruce Feller, Paul L. White, P. Brian White, R. Gregory Downing
-
Patent number: 7233007Abstract: Radiation detectors, such as neutron detectors, and methods of detecting radiation, are described.Type: GrantFiled: February 28, 2005Date of Patent: June 19, 2007Assignee: Nova Scientific, Inc.Inventors: R. Gregory Downing, W. Bruce Feller
-
Patent number: 7183701Abstract: Electron multipliers, radiation detectors, and methods of making the multipliers and detectors are described. In some embodiments an electron multiplier has a structure including a plurality of interconnected fibers having electron-emissive surfaces, the fibers having a width to thickness aspect ratio greater than one.Type: GrantFiled: May 27, 2004Date of Patent: February 27, 2007Assignee: Nova Scientific, Inc.Inventors: R. Gregory Downing, W. Bruce Feller, P. Brian White, Paul L. White
-
Publication number: 20040256967Abstract: Electron multipliers, radiation detectors, and methods of making the multipliers and detectors are described. In some embodiments an electron multiplier has a structure including a plurality of interconnected fibers having electron-emissive surfaces, the fibers having a width to thickness aspect ratio greater than one.Type: ApplicationFiled: May 27, 2004Publication date: December 23, 2004Inventors: R. Gregory Downing, W. Bruce Feller, P. Brian White, Paul L. White
-
Patent number: 6828714Abstract: An electron multiplier includes a plate having a plurality of interconnected particles, e.g., fibers, having electron-emissive surfaces. The particles may include a neutron-sensitive and/or neutron reactive material, such as 6Li, 10B, 155Gd, 157Gd, —and/or hydrogenous compounds, in excess of their natural abundance. The particles may include an X-ray sensitive and/or X-ray reactive material, such as Pb.Type: GrantFiled: May 3, 2002Date of Patent: December 7, 2004Assignee: Nova Scientific, Inc.Inventors: R. Gregory Downing, W. Bruce Feller, Paul L. White, P. Brian White
-
Publication number: 20030205956Abstract: An electron multiplier includes a plate having a plurality of interconnected particles, e.g., fibers, having electron-emissive surfaces. The particles may include a neutron-sensitive and/or neutron reactive material, such as 6Li, 10B, 155Gd, 157Gd,—and/or hydrogenous compounds, in excess of their natural abundance. The particles may include an X-ray sensitive and/or X-ray reactive material, such as Pb.Type: ApplicationFiled: May 3, 2002Publication date: November 6, 2003Inventors: R. Gregory Downing, W. Bruce Feller, Paul L. White, P. Brian White