| Patent Number |
Title Of Patent |
Date Issued |
| RE37899 |
Tomographic method of x-ray imaging |
November 5, 2002 |
| A method is disclosed for obtaining the density distributions of three-dimensional elements that compose objects or groups of objects, by examining the objects with beams of x-rays or gamma radiation that are transmitted through the object in a plurality of approximately parallel pat |
| 7391508 |
Arc/spark optical emission spectroscopy correlated with spark location |
June 24, 2008 |
| Two or more high-frequency microphones are used to determine where an individual spark or other excitation beam strikes a sample in an optical emission spectroscopy (OES) instrument. The position of the spark can be correlated with the elemental composition of the material in the sample |
| 7375359 |
Portable X-ray fluorescence instrument with tapered absorption collar |
May 20, 2008 |
| An instrument and method for measuring the elemental composition of a test material. The instrument has a source of penetrating radiation for irradiating an irradiated region of the test material, a detector for detecting fluorescence emission by the test material and for generating a |
| 7375358 |
Radiation shield for portable x-ray fluorescence instruments |
May 20, 2008 |
| A radiation shield and method for reducing ambient radiation levels at a distance from a surface irradiated by penetrating radiation emanating from an instrument substantially along a propagation axis. The shield attaches to an end of the instrument proximate to an irradiated surface |
| 7302034 |
Analysis of elemental composition and thickness in multilayered materials |
November 27, 2007 |
| A method and computer program software product for establishing an areal density of an elemental constituent of one layer of a stack of layers of material overlying a substrate. Incident penetrating radiation excites characteristic x-ray fluorescent radiation in multiple lines associated |
| 7218704 |
X-ray backscatter mobile inspection van |
May 15, 2007 |
| An inspection system based upon an enclosed conveyance such as a van, capable of road travel, for inspecting persons or objects. The conveyance is characterized by an enclosing body, or skin. A source of penetrating radiation and a spatial modulator for forming the penetrating radiation |
| 7099434 |
X-ray backscatter mobile inspection van |
August 29, 2006 |
| An inspection system based upon an enclosed conveyance such as a van, capable of road travel, for inspecting objects of inspection that may include persons. The conveyance is characterized by an enclosing body, or skin. A source of penetrating radiation and a spatial modulator for fo |
| 7010094 |
X-ray inspection using spatially and spectrally tailored beams |
March 7, 2006 |
| A system and method for inspecting an object, the system and method comprising a source for generating a penetrating radiation beam for irradiating the object, the beam having, for each instant of time, an instantaneous energy spectrum of intensity, a shaper for modulating the genera |
| 6965118 |
Radiation shield for portable x-ray fluorescence instruments |
November 15, 2005 |
| A radiation shield and method for reducing ambient radiation levels at a distance from a surface irradiated by penetrating radiation emanating from an instrument. The shield attaches to an end of the instrument abutting an irradiated surface and has a platen of attenuating material dispo |
| 6801595 |
X-ray fluorescence combined with laser induced photon spectroscopy |
October 5, 2004 |
| A device and method for identifying the composition of a target sample. The target sample may be a matrix such as a metal alloy, a soil sample, or a work of art. The device includes an x-ray fluorescence detector that produces an x-ray signal output in response to the target sample. The |
| 6765986 |
X-ray fluorescence analyzer |
July 20, 2004 |
| An x-ray fluorescence analyzer and method. The analyzer and method use a single radio-active source, such as, .sup.241 Am to determine the composition of a metal alloy or precious metal. The method compensates for Rayleigh scattering by first determining a scaling factor using a part |
| 6621888 |
X-ray inspection by coherent-scattering from variably disposed scatterers identified as suspect |
September 16, 2003 |
| A system and method for inspecting an enclosure with penetrating radiation. Radiation side-scattered from an object within the enclosure is detected, allowing the object to be located. If the object is deemed suspect, a volume element of the suspect object is further irradiated with |
| 6542574 |
System for inspecting the contents of a container |
April 1, 2003 |
| A system for inspecting the contents of a container is provided. The system includes a first source for emitting sequential beams of penetrating electromagnetic radiation from a target in a first set of substantially parallel directions, a conveyor for moving the container relative to th |
| 6459764 |
Drive-through vehicle inspection system |
October 1, 2002 |
| An inspection system for inspecting a moving vehicle and for detecting material disposed within the vehicle. The system has a source for providing a generally horizontally pointing beam of penetrating radiation of specified cross-section so as to illuminate vehicles driven alongside |
| 6459761 |
Spectrally shaped x-ray inspection system |
October 1, 2002 |
| A system and methods for non-invasive x-ray inspection of an enclosure in such a manner as to reduce the ambient radiation dose to below a specified level. A beam spectrally filtered to emphasize a high-energy component of penetrating radiation is interleaved, temporally, with a beam dom |
| 6453007 |
X-ray inspection using co-planar pencil and fan beams |
September 17, 2002 |
| An inspection system is for inspecting an object with penetrating radiation. A source of penetrating radiation provides a beam of radiation. The beam alternates between a first beam shape and a second beam shape, the first and second beam shapes being coplanar. A first detector arran |
| 6442233 |
Coherent x-ray scatter inspection system with sidescatter and energy-resolved detection |
August 27, 2002 |
| A system and method for inspecting an enclosure. A beam of x-rays is used for scanning the enclosure and for identifying areas of suspect material. The beam is subsequently coherently scattered off suspect materials, during the course of a single pass of the enclosure past the beam, for |
| 6434219 |
Chopper wheel with two axes of rotation |
August 13, 2002 |
| An apparatus and method for creating a beam of penetrating radiation of specified cross section that raster scans over a two-dimensional area, using a chopper wheel rotated about two axes. The wheel has a set of apertures of which at least one is illuminated to form the beam. Rotary |
| 6424695 |
Separate lateral processing of backscatter signals |
July 23, 2002 |
| A system and a method for determining the depth of an object with respect to a surface behind which the object is concealed. The intensity of x-rays backscattered from the object is measured by at least two backscatter detectors disposed at different positions with respect to the scatter |
| 6421420 |
Method and apparatus for generating sequential beams of penetrating radiation |
July 16, 2002 |
| An apparatus and method for generating electronically steerable beams of sequential penetrating radiation. Charged particles from a source are formed into a beam and accelerated to a target. Electromagnetic radiation generated by the target is emitted with an angular distribution which i |
| 6356620 |
Method for raster scanning an X-ray tube focal spot |
March 12, 2002 |
| A method and apparatus for producing a scanned beam of penetrating radiation. A beam of particles illuminates a portion of a target, the illuminated portion comprising a focal spot having a centroid. Illumination of the target creates a beam of penetrating radiation such as x-rays. T |
| 6320933 |
Multiple scatter system for threat identification |
November 20, 2001 |
| A system and a method for determining the density of an object. The intensity of x-rays backscattered from the object is measured by at least two backscatter detectors disposed at different distances from the intersection of an incident x-ray beam with the plane of the detectors. At |
| 6282260 |
Unilateral hand-held x-ray inspection apparatus |
August 28, 2001 |
| A hand holdable inspection device for three-dimensional inspection of a volume distal to a surface. The inspection device has a hand-holdable unit including a source of penetrating radiation for providing a beam of specified cross-section and a detector arrangement for detecting pene |
| 6249567 |
X-ray back scatter imaging system for undercarriage inspection |
June 19, 2001 |
| An inspection system for inspecting a vehicle moving at a grade of travel over a surface and for detecting material disposed within or on the underside of the vehicle. The system has a source for providing a generally upward or downward pointing beam of penetrating radiation of speci |
| 6192104 |
Fan and pencil beams from a common source for x-ray inspection |
February 20, 2001 |
| A system and method for inspecting an object, where both a fan beam and a pencil beam of penetrating radiation are used to illuminating the object concurrently. Both beams may be derived from a single source of penetrating radiation. The pencil beam is noncoplanar with the fan beam a |
| 6192101 |
X-ray determination of the mass distribution in containers |
February 20, 2001 |
| An apparatus and method for measuring, in a non-invasive manner, the individual mass of objects in containers by means of x-ray transmission radiography in which a beam of penetrating radiation is sent through the container and the transmitted intensity for those photons that interact |
| 6151381 |
Gated transmission and scatter detection for x-ray imaging |
November 21, 2000 |
| An inspection system for inspecting an enclosure and its contents using temporally gated sources of penetrating radiation. A first source produces an intermittent first beam having a duration of inactivity while a second sources produces a second beam, which may have an energy spectrum |
| 6081580 |
Tomographic inspection system |
June 27, 2000 |
| A tomography system for analyzing an object concealed within an enveloping surface. The system has multiple beams of penetrating radiation, each beam disposed with a distinct orientation with respect to the enveloping surface. Detectors are provided for measuring radiation backscattered |
| 6067344 |
X-ray ambient level safety system |
May 23, 2000 |
| A method for modulating the intensity of an x-ray beam in an x-ray inspection system so as to maintain the highest penetration power and optimum image quality subject to keeping the ambient radiation generated by the x-rays below a specified standard. |
| 5930326 |
Side scatter tomography system |
July 27, 1999 |
| An x-ray tomography system measures x-rays side-scattered by material concealed within an enveloping surface. One or more x-ray beams are incident on the enveloping surface and scattered onto collimated detectors disposed in arrays parallel to the incident x-ray beams. By varying the |
| 5910973 |
Rapid X-ray inspection system |
June 8, 1999 |
| An inspection system for automatically detecting the presence of a concealed item within an enclosure. A beam of penetrating radiation is incident on the enclosure and detected by a detector disposed on the side of the enclosure opposite to the incident beam. By scanning the relative |
| 5696806 |
Tomographic method of x-ray imaging |
December 9, 1997 |
| A method is disclosed for obtaining the density distributions of three-dimensional elements that compose objects or groups of objects, by examining the objects with beams of x-rays or gamma radiation that are transmitted through the object in a plurality of approximately parallel pat |
| 5461654 |
X-ray fluorescence detector |
October 24, 1995 |
| A new type of x-ray fluorescence detector is disclosed that utilizes the measured intensities of fluorescent L.sub..alpha. and L.sub..beta. x-rays, or K.sub..alpha. and K.sub..beta. x-rays of a target element, to determine the absorption of the covering layer over the target element, wit |
| 5396529 |
X-ray fluorescence detector |
March 7, 1995 |
| A new type of x-ray fluorescence detector is disclosed that utilizes the measured intensities of fluorescent L.sub..alpha. and L.sub..beta. x-rays, or K.sub..alpha. and K.sub..beta. x-rays of a target element, to determine the absolute concentration of the target element, independent of |
| 5390229 |
Lead-paint detector |
February 14, 1995 |
| A new type of X-ray fluorescence detector of lead paint is disclosed that utilizes the measured intensities of fluorescent L.sub..alpha. and L.sub..beta. x-ray lines of lead to determine the absolute concentration of lead in mg/cm.sup.2, independent of either the thickness or the nature |
| 5274688 |
Lead-paint detector |
December 28, 1993 |
| A new type of X-ray fluorescence detector of lead paint that utilizes the measured intensities of fluorescent L.sub..alpha. and L.sub..beta. x-ray lines of lead to determine the absolute concentration of lead in mg/cm.sup.2, independent of either the thickness or the nature of the co |
| 5251240 |
Method and apparatus for employing resonance-produced gamma rays to detect the presence of both |
October 5, 1993 |
| Generating nuclear resonance-produced gamma rays of .sup.14 N, .sup.16 O (and C1) for scanning objects such as luggage that may contain explosives of nitrogen-oxygen (-chorine) constituents, and detecting such by Resonance Absorption Analysis (RAA) techniques, and with increased yield |
| 4920270 |
Radon detection |
April 24, 1990 |
| Detection and quantitative measurement of the radioactive isotope of .sup.222 Rn, as encountered in air in habitats is accomplished in a passive detection system in which the radon at the test site is adsorbed into an adsorbent, e.g. activated charcoal, held in a vial made especially |
| 4804852 |
Treating work pieces with electro-magnetically scanned ion beams |
February 14, 1989 |
| A magnetic scanning technique for sweeping an ion beam across an implantation target, such as a semiconductor wafer, by means of modulating the energy of a beam and directing it through an analyzer magnet, which effects a scanning motion of the beam of constant intensity, the wave form |
