Radiation Tracer Methods Patents (Class 250/302)
  • Patent number: 7385524
    Abstract: The present invention includes an automatic commodity or services billing and metering system that when installed does not damage any existing meters or gauges, will fit virtually all known meters and gauges, and has incorporated into the system programmable reading ability to allow reading and accumulation of data by unit, hourly, daily, weekly, monthly or any other form of counting required by the customer. The meters are read by various means, one method is by counting and or sensing radiation increases and decreases of radiation emitting from a meter hand or gauge passing a sensor to generate a count. The read data is then sent via the Internet through the telephone line, by satellite, or by cellular phone connection to an offsite central billing and payment processing center where the rate payer and the utility or customer will have various forms of programmable access to its consumption data.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: June 10, 2008
    Inventor: James Robert Orlosky
  • Patent number: 7323706
    Abstract: A first time stamp T1 indicative of the time of irradiation of an object and a second time stamp T2 indicative of the time of exposure of an image detector by the radiation image of the object, are generated. Meta-data relating to the object are associated with the radiation image of the object if T1 equals T2 or if T1 approximates T2 within a predefined limit.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: January 29, 2008
    Assignee: AGFA Healthcare, N.V.
    Inventors: Walter Exelmans, Eric De Broeck, Peter Durt, Patrick Lambrechts, Bart Tytgat
  • Patent number: 7309862
    Abstract: A method for determining changes of a site, wherein the site is treated with an aqueous dispersion having at least one binder, at least one substance emitting visible light on UV exposure, at least one binder and, optionally, a dispersant and the site thus treated and/or untreated adjacent sites are exposed to UV light and the deviation of the light intensity of the emitted light of a partial area of the site from the mean light intensity of the emitted light of the site area and/or the light intensity of the emitted light of a part of the adjacent, untreated area from the mean light intensity of the emitted light of the adjacent untreated areas and/or the light intensity of the emitted light of the site immediately after the treatment with the composition from the light intensity of the emitted light at a later time and/or the light intensity of the emitted light of the adjacent untreated area immediately after the treatment of the site with the composition from the light intensity of the emitted light of th
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: December 18, 2007
    Assignee: LANXESS Deutschland GmbH
    Inventors: Karl-Heinz Drenker, Hans-Jörg Seiler, Volker Kahle, Norbert Donkels
  • Patent number: 7304300
    Abstract: A method of covertly tagging an object for later tracking includes providing a material capable of at least one of being applied to the object and being included in the object, which material includes deuterium; and performing at least one of applying the material to the object and including the material in the object in a manner in which in the appearance of the object is not changed, to the naked eye.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: December 4, 2007
    Assignee: Battelle Energy Alliance, LLC
    Inventors: Judy K. Partin, Mark L. Stone, John Slater, James R. Davidson
  • Patent number: 7291836
    Abstract: The invention relates to a method and device for the continuous determination of the lubricating oil consumption of an internal combustion engine. The inventive method consists in: placing a determined quantity of at least one radioactive tracer in the lubricating oil of which the consumption is to be measured; and measuring the quantity of radioactive tracer(s) present in the gases released from the engine (2), said measurement being taken downstream of the engine.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: November 6, 2007
    Assignees: Totalfinaelf France, Delta Services Industriels Sprl
    Inventors: Thierry Delvigne, Jerome Obiols
  • Patent number: 7256398
    Abstract: A method of determining a component of a medium comprises illuminating the medium to excite a marker associated with the component. Detected photoluminescent emission from the marker in response to the excitation is compared with one or more emission profiles. The component is identified based on a match between the detected photoluminescent emission and at least one of the emission profiles.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: August 14, 2007
    Assignee: Prime Technology LLC
    Inventors: Gary A. Ross, Graham I. Johnson, Barrie Clark, Simon J. Forrest, Jeffrey Cegalis, William J. Greaves, Charles Q. Maney
  • Patent number: 7214925
    Abstract: A method of detecting a non-fixed object in a system (12) includes applying a light emitting or generating substance to multiple objects. The objects are illuminated with an object illuminator (13). At least one of the objects (10) is determined to be a nonmember within a known pattern of objects and is identified to be a non-fixed object in response to illumination of the objects.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: May 8, 2007
    Assignee: The Boeing Company
    Inventors: Daniel E. Wagoner, Michael L. Taylor, John C. Clayton, John D. Fitts, Greg L. Benfer, Lynn E. Johnson, Frank G. Speno
  • Patent number: 7194360
    Abstract: A method of simply and quickly determining ?-ray releasing nuclides having long half-life without carrying out a chemical separation is provided. By inputting a data of pulses incident to an ?-ray detector in a computer, obtaining time distribution of the incident pulses by using a very short time measuring timer and plotting, and fitting the linear originated in a random event corresponding to the background and the non-linear originated in the correlated events of parent nuclides-progenies by using the least squares method, the whole generating probability P (t) from the parent nuclide to the progeny thereof is obtained. By subtracting the random events portion from the P(t), the correlated events portion is extracted. The radioactivity per unit can be obtained by dividing the extracted correlated events portion by the measured time, the amount of the supplied sample and the counting efficiency.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: March 20, 2007
    Assignee: Japan Nuclear Cycle Development Institute
    Inventors: Yasuhiro Uezu, Tetsuo Hashimoto
  • Patent number: 7172799
    Abstract: The invention relates to a process for producing a radiation flood source by printing a radioactive solution, and a radioactive printing solution used in this method. The present invention also relates to a flood source for quality testing and assurance of radiation detecting devices obtained by said process.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: February 6, 2007
    Assignee: AEA Technology QSA GmbH
    Inventors: Horst Petersen, Helmut Menuhr
  • Patent number: 7146295
    Abstract: A drainage system design method and apparatus including a computer program that enables a computer user to design and obtain computer-generated stackings of drainage system structures such as manholes. The user inputs dimensional and structural information concerning the drainage system. The program is operable to access a set of predefined drainage system components and, using the inputted dimensional and structural information, the program determines different configurations of the predefined components that represent a structure contained in the drainage system. The program displays different configurations of stackings sorted based on predefined goodness criteria. The program can also determine one or more drainage system designs that comprise a configuration of the predefined components for each of two or more of the structures contained in the drainage system, and can display and output site plans, elevational views, shop drawings, and bills of material.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: December 5, 2006
    Assignee: FBE Associates, Inc.
    Inventors: Thomas D. Goodman, Patrick A. Race
  • Patent number: 7141811
    Abstract: The present application reveals a lamp and a method for detecting leaks in air-conditioning and refrigeration systems. The lamp uses one or more light-emitting diodes (LEDs) as a light source to detect fluorescent dyes that have been added to the air-conditioning or refrigeration system.
    Type: Grant
    Filed: February 11, 2005
    Date of Patent: November 28, 2006
    Assignee: UView Ultraviolet Systems, Inc.
    Inventor: Phil Trigiani
  • Patent number: 7128812
    Abstract: A foam level in a delayed coking drum is detected by utilizing the varying density of the boiling mass in the coke drum which has larger bubbles and is less dense at the top and smaller bubbles and a higher density at the bottom. A plurality of radiation detectors are disposed on the drum and calibrated such that zero radiation is equivalent to 100 percent level. The percentage reading for each detector is multiplied by the fraction of height each detector is in relation to the total height of all the detectors to give a product and the products summed to give a level.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: October 31, 2006
    Inventor: Carl E. Cupit
  • Patent number: 7126119
    Abstract: A composition and a method for determining changes of a site. The composition includes an aqueous dispersion including at least one binder, at least one substance emitting visible light on UV exposure and optionally a dispersant. The method includes treating the site with a composition, exposing the treated site and/or the untreated areas adjacent thereto to UV light, and determining the deviation of the light intensity of the emitted light of the site Immediately after the treatment with the composition from the light intensity of the emitted light at a later time.
    Type: Grant
    Filed: April 5, 2004
    Date of Patent: October 24, 2006
    Assignee: Bayer Chemicals AG
    Inventors: Karl-Heinz Drenker, Hans-Jörg Seiler, Volker Kahle, Norbert Donkels
  • Patent number: 7084392
    Abstract: The invention comprises an apparatus and method for simple fluorescence spectrometry in a downhole environment using a UV light source and UV fluorescence to determine a parameter of interest for a sample downhole. The UV light source illuminates the fluid, which in turn fluoresces light. The fluoresced light is transmitted back towards the UV light source and through the pathway towards an optical spectrum analyzer. API gravity is determined by correlation the wavelength of peak fluorescence and brightness of fluorescent emission of the sample. Asphaltene precipitation pressure is determined by monitoring the blue green content ratio for a sample under going depressurization.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: August 1, 2006
    Assignee: Baker Hughes Incorporated
    Inventors: Rocco DiFoggio, Arnold Walkow, Paul Bergren, Louis Perez
  • Patent number: 7064309
    Abstract: A method for detecting a non-fixed object in a system (12) is provided. The method includes applying a light emitting substance (13) to at least a portion (14) of an object (10). At least a section (20) of the portion (14) is illuminated with a non-fixed object illuminator (16). The object (10) is detected in the system (12) in response to illuminating the section (20). The object (10) is then determined to be a fixed or non-fixed object.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: June 20, 2006
    Assignee: The Boeing Company
    Inventors: Daniel E. Wagoner, Michael L. Taylor, John C. Clayton, John D. Fitts, Greg L. Benfer, Lynn E. Johnson
  • Patent number: 7038201
    Abstract: A fluorescent trace material is provided within at least a portion of an electrical contact or interrupter assembly component, or a cavity defined therein. At least a portion of the fluorescent trace material is exposed or released from the electrical contact or interrupter assembly component, indicating a degree of component wear.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: May 2, 2006
    Assignee: Nichols Applied Technology, LLC
    Inventor: Bruce W. Nichols
  • Patent number: 7031802
    Abstract: A method for semi-autonomous operation of a robotic device in a room. In the method, one or more goal points are set and the distances between the robotic device and the one or more goal points are determined. A first one of the one or more goal points is selected and the robotic device is maneuvered to travel to the first one of the one or more goal points.
    Type: Grant
    Filed: August 13, 2003
    Date of Patent: April 18, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Cullen E. Bash, Chandrakant D. Patel, Ratnesh K. Sharma
  • Patent number: 7009198
    Abstract: A method of detecting a non-fixed object created during hole drilling operations on a system (12) includes applying a light emitting lubricant (25) to a drill bit (37) of a hole-drilling device (31). The light emitting lubricant adheres to foreign object debris 10 that is created during the hole drilling operations. The foreign object debris 10 can include shavings (29), portions of the drill bit (37), or the entire drill bit (37). The objects are illuminated with an object illuminator (16). At least one of the objects (10) is determined to be a nonmember within a known pattern of objects and is identified to be a non-fixed object in response to illumination of the objects.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: March 7, 2006
    Assignee: The Boeing Company
    Inventors: Greg L. Benfer, Daniel E. Wagoner, Michael L. Taylor, John D. Fitts, John C. Clayton, Lynn E. Johnson
  • Patent number: 6943348
    Abstract: A system is provided for detecting a substantially transparent injection molding material. The injection molding material contains a fluorescent colorant, which is invisible when not exposed to ultraviolet light, but becomes visible when exposed to ultraviolet light. A method of detecting the injection molding material involves exposing the injection molding material to ultraviolet light and examining the material during exposure.
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: September 13, 2005
    Assignee: Masimo Corporation
    Inventor: James Price Coffin IV
  • Patent number: 6920346
    Abstract: A pre-operative device includes at least one elongated probe (1) integrating at least one element for detecting radioactive radiation (3) emitted by tissues (4) marked by radioactive isotopes or radioactive colloids, generating a first representative electrical signal (5), at least one element (6) for emitting luminous radiation toward the tissues (4) and at least one element (7) for receiving and transmitting reflected luminous radiation (8) reflected by the tissues (4) marked by vital colorants or magnetic markers, toward at least one element (9) for converting the reflected luminous radiation (8) into a second representative electrical signal (10), electrical connection elements for conveying the first and second electrical signals (5, 10) and, at least one electronic means (11) for processing electronic signals.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: July 19, 2005
    Assignee: Eurorad 2-6 (Societe Anonyme)
    Inventors: Anne Kazandjian, Jacques Chambron
  • Patent number: 6884998
    Abstract: A fluorescent trace material is provided within at least a portion of an electrical contact or interrupter assembly component, or a cavity defined therein. At least a portion of the fluorescent trace material is exposed or released from the electrical contact or interrupter assembly component, indicating a degree of component wear.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: April 26, 2005
    Inventor: Bruce Nichols
  • Patent number: 6881953
    Abstract: The claimed method of tracing drains starts with a comprehensive building survey in which all existing drains are numbered. A Master Blueprint and a Master Spreadsheet are created using information collected in the building survey. A tracer is used to determine the flow of storm water to and from the building's storm drains. A test location, consisting of a storm manhole or a sanitary manhole is then chosen and water is run continuously through this manhole. A non-toxic fluorescent tracer is added to the target sanitary drain and a sample of the water running through the test location is withdrawn. A fluorometer is used to detect the fluorescent signal of non-toxic fluorescent tracer in the sample of water withdrawn. This procedure is repeated until all test locations have been surveyed and the information recorded on the Master Blueprint and Master Spreadsheet. The information is used to replumb drains.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: April 19, 2005
    Assignee: Nalco Company
    Inventors: Michael J. Weiland, John E. Hoots
  • Patent number: 6855944
    Abstract: The present application reveals a lamp and a method for detecting leaks in air-conditioning and refrigeration systems. The lamp uses one or more light-emitting diodes (LEDs) as a light source to detect fluorescent dyes that have been added to the air-conditioning or refrigeration system.
    Type: Grant
    Filed: January 14, 2004
    Date of Patent: February 15, 2005
    Assignee: UView Ultraviolet Systems, Inc.
    Inventor: Phil Trigiani
  • Patent number: 6847838
    Abstract: A method and apparatus for the in vivo location and tracking of a radioactive seed source during and after brachytherapy treatment. The method comprises obtaining multiple views of the seed source in a living organism using: 1) a single PSPMT detector that is exposed through a multiplicity of pinholes thereby obtaining a plurality of images from a single angle; 2) a single PSPMT detector that may obtain an image through a single pinhole or a plurality of pinholes from a plurality of angles through movement of the detector; or 3) a plurality of PSPMT detectors that obtain a plurality of views from different angles simultaneously or virtually simultaneously. The plurality of images obtained from these various techniques, through angular displacement of the various acquired images, provide the information required to generate the three dimensional images needed to define the location of the radioactive seed source within the body of the living organism.
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: January 25, 2005
    Assignee: Southeastern Universities Research Assn., Inc.
    Inventors: Daniel J. Macey, Stanislaw Majewski, Andrew G. Weisenberger, Mark Frederick Smith, Brian James Kross
  • Publication number: 20040256551
    Abstract: A fluorescent trace material is provided within at least a portion of an electrical contact or interrupter assembly component, or a cavity defined therein. At least a portion of the fluorescent trace material is exposed or released from the electrical contact or interrupter assembly component, indicating a degree of component wear.
    Type: Application
    Filed: July 22, 2004
    Publication date: December 23, 2004
    Inventor: Bruce W. Nichols
  • Patent number: 6804549
    Abstract: A method and system by which the sentinel lymph node, which is the first lymph node to which cancer is transferred when cancer is transferred to lymph nodes, is detected easily and with a high degree of accuracy. A fluorescent colorant is injected near a tumor, and after a predetermined period of time an abdominal operation is performed and stimulating light is projected onto the area being examined. Because the fluorescent colorant has been accumulated on the sentinel lymph node, it emits fluorescent light, which is then magnified and converted to a visual image. The examiner can view the normal image and the visible image at the same time. Because the stimulating light is in the near-infrared wavelength band, which is difficult for the fatty and other tissue that cover the sentinel lymph node to absorb, the sentinel lymph node is detected from the surface of the tissue.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: October 12, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Katsumi Hayashi
  • Publication number: 20040149905
    Abstract: A system and method are provided for inspecting cooling holes of a completed, lasered, and deburred turbine airfoil. The cooling holes are covered with a very porous tape before placing the turbine airfoil into an air fixture that has a metered amount of fluorescent liquid dripped into the airline. The atomized fluorescent liquid flows through the turbine airfoil internal cavities, exiting through the open cooling holes, where it is absorbed by the porous tape. A pattern will appear on the tape surface, in the area of the open holes, indicative of the presence of not-through or plugged cooling holes.
    Type: Application
    Filed: January 31, 2003
    Publication date: August 5, 2004
    Applicant: General Electric Company
    Inventors: Gayle M. Bowles, Gary E. Wheat, William L. Sheyer
  • Publication number: 20040124355
    Abstract: A light source for testing sites using a fluorescent dye is described. The light source can include a low voltage lamp or a low heat generating lamp.
    Type: Application
    Filed: September 3, 2003
    Publication date: July 1, 2004
    Inventors: Robert L. Miniutti, Terrence D. Kalley, John Raymond Burke, David Gentit
  • Publication number: 20040113070
    Abstract: A fluorescent trace material is provided within at least a portion of an electrical contact or interrupter assembly component, or a cavity defined therein. At least a portion of the fluorescent trace material is exposed or released from the electrical contact or interrupter assembly component, indicating a degree of component wear.
    Type: Application
    Filed: December 13, 2002
    Publication date: June 17, 2004
    Inventor: Bruce Nichols
  • Publication number: 20040113071
    Abstract: A method of detecting a non-fixed object created during hole drilling operations on a system (12) includes applying a light emitting lubricant (25) to a drill bit (37) of a hole-drilling device (31). The light emitting lubricant adheres to foreign object debris 10 that is created during the hole drilling operations. The foreign object debris 10 can include shavings (29), portions of the drill bit (37), or the entire drill bit (37). The objects are illuminated with an object illuminator (16). At least one of the objects (10) is determined to be a nonmember within a known pattern of objects and is identified to be a non-fixed object in response to illumination of the objects.
    Type: Application
    Filed: November 24, 2003
    Publication date: June 17, 2004
    Inventors: Greg L. Benfer, Daniel E. Wagoner, Michael L. Taylor, John D. Fitts, John C. Clayton, Lynn E. Johnson
  • Patent number: 6740875
    Abstract: A covert, gamma-ray “signature” is used as a “watermark” for property identification. This new watermarking technology is based on a unique steganographic or “hidden writing” digital signature, implemented in tiny quantities of gamma-ray-emitting radioisotopic material combinations, generally covertly emplaced on or within an object. This digital signature may be readily recovered at distant future times, by placing a sensitive, high energy-resolution gamma-ray detecting instrument reasonably precisely over the location of the watermark, which location may be known only to the object's owner; however, the signature is concealed from all ordinary detection means because its exceedingly low level of activity is obscured by the natural radiation background (including the gamma radiation naturally emanating from the object itself, from cosmic radiation and material surroundings, from human bodies, etc.).
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: May 25, 2004
    Assignee: The Regents of the University of California
    Inventors: Muriel Y. Ishikawa, Lowell L. Wood, Ronald W. Lougheed, Kenton J. Moody, Tzu-Fang Wang
  • Patent number: 6737645
    Abstract: A method for determining whether effective coverage of the interior of a bottle with a sprayed sanitizer in a bottle fill-and-cap operation is attained by using a fluorescing solution, preferably comprising riboflavin and sucrose dissolved in water, that is sprayed on the interior of the bottle by the same spray system by which the sanitizer is sprayed. After application of the fluorescing solution, UV light is applied to the bottle interior to activate the fluorescing solution and thus make evident the spray pattern. Spray pattern adjustments can be made as needed, in order to be certain that the entirety of the inside surface of the bottle is coated. Once the spray pattern is thus set, the equipment is qualified to be used for production, with the sanitizer being sprayed according to the same spray pattern.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: May 18, 2004
    Assignee: Tropicana Products, Inc.
    Inventors: Tammy Foster, Christine Jansen, James D. Schuman
  • Publication number: 20040079903
    Abstract: The present invention provides a device that uses an ultraviolet LED to locate fluorescent materials. In particular, the present invention is directed to a device that is used to detect leaks, cracks or fissures in a contained system, such as, for example, an air conditioning system for a vehicle. The device has a main body, an ultraviolet LED mounted to the main body so that ultraviolet light from the LED is directed away from the device, and a power source linked to the ultraviolet LED to provide power to the LED. The ultraviolet LED can be an UVA LED. Moreover, the wavelength of the ultraviolet light produced by the LED is about 315 nm to about 400 nm. The method of the invention for locating fluid leaks can comprise, for example, introducing an ultraviolet dye into a fluid in a contained system, such as, for example, an air conditioning system of a vehicle, and illuminating an area of the system to be checked for fluid leaks with an ultraviolet LED light source.
    Type: Application
    Filed: October 23, 2003
    Publication date: April 29, 2004
    Applicant: J.L. Sales & Marketing, Inc.
    Inventor: Peter S. Sosinsky
  • Patent number: 6710363
    Abstract: The present application reveals a lamp and a method for detecting leaks in air-conditioning and refrigeration systems. The lamp uses one or more light-emitting diodes (LEDs) as a light source to detect fluorescent dyes that have been added to the air-conditioning or refrigeration system.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: March 23, 2004
    Assignee: UView Ultraviolet Systems, Inc.
    Inventor: Phil Trigiani
  • Patent number: 6677606
    Abstract: A method is provided for selective binding and detecting target molecules, and a method for detecting biological molecules, the method comprising supplying a semi-conductor capable of charge pair separation, and juxtaposing affinity moieties to the semi-conductor so as to effect changes in the charge pair separation characteristics when the affinity molecules are bound to the target molecules.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: January 13, 2004
    Assignee: University of Chicago
    Inventors: Tijana Rajh, Tatjana Paunesku, Gayle E. Woloschak, Marion C. Thurnauer
  • Patent number: 6677584
    Abstract: A reliable and cost-effective method and composition is provided for inspecting manufactured components and detecting defects therein. In particularly, a method is provided for optically detecting defects in manufactured components during the manufacturing process by the incorporation of a fluorescent dye into a manufacturing fluid.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: January 13, 2004
    Assignee: Cummins Inc.
    Inventor: Tom Yonushonis
  • Patent number: 6646243
    Abstract: A method and apparatus for preparation of a substrate containing a plurality of sequences. Photoremovable groups are attached to a surface of a substrate. Selected regions of the substrate are exposed to light so as to activate the selected areas. A monomer, also containing a photoremovable group, is provided to the substrate to bind at the selected areas. The process is repeated using a variety of monomers such as amino acids until sequences of a desired length are obtained. Detection methods and apparatus are also disclosed.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: November 11, 2003
    Assignee: Affymetrix, Inc.
    Inventors: Michael C. Pirrung, J. Leighton Read, Stephen P. A. Fodor, Lubert Stryer
  • Patent number: 6642529
    Abstract: A method for inspecting features on a reticle is provided. The method includes providing a layout design of a test feature and transferring the layout design of the test feature onto the reticle. After the test feature is transferred onto the reticle, an image of the transferred layout design is captured to determine whether or not the transfer is acceptable. This determination is made by comparing the captured image of the transferred layout design against the layout design of the test feature. The comparison ascertains deviations between the captured image and the layout design and determines if the deviations fall within a user specified range.
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: November 4, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Sudhir G. Subramanya, Clifford Takemoto, Satyendra S. Sethi
  • Publication number: 20030197122
    Abstract: A system for routinely monitoring germ contamination in areas where human interaction takes place, and a method for using the same. A germ detection agent is placed either onto a roll of toilet paper or inside a pair of gloves. After handling the toilet paper, or removing the gloves, the detection agent will be present on the individual's hands. This individual is then directed by proper personal hygiene and health codes to wash his or her hands with soap and water, and then place the hands under an ultraviolet light source in order to visualize any germ detection agent still remaining on the hands. If no detection agent is seen, the individual has been properly sanitized of contamination. If, however, detection agent is still visualized on the hands after washing, then that individual must repeat the hand washing, this time more thoroughly to completely remove remaining germ detection agent, before entering an area where contamination may be spread.
    Type: Application
    Filed: January 28, 2003
    Publication date: October 23, 2003
    Inventors: Norman A. Faiola, Jack J. Kennamer
  • Patent number: 6630307
    Abstract: The use of semiconductor nanocrystals as detectable labels in various chemical and biological applications is disclosed. The methods find use for detecting a single analyte, as well as multiple analytes by using more than one semiconductor nanocrystal as a detectable label, each of which emits at a distinct wavelength.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: October 7, 2003
    Assignee: Quantum Dot Corporation
    Inventors: Marcel P. Bruchez, R. Hugh Daniels, Stephen A. Empedocles, Vince E. Phillips, Edith Y. Wong, Donald A. Zehnder
  • Patent number: 6627884
    Abstract: Disclosed are methods and apparatus for simultaneously flooding a sample (e.g., a semiconductor wafer) to control charge and inspecting the sample. The apparatus includes a charged particle beam generator arranged to generate a charged particle beam substantially towards a first portion of the sample and a flood gun for generating a second beam towards a second portion of the sample. The second beam is generated substantially simultaneously with the inspection beam. The apparatus further includes a detector arranged to detect charged particles originating from the sample portion. In a further implementation, the apparatus further includes an image generator for generating an image of the first portion of the sample from the detected particles. In one embodiment, the sample is a semiconductor wafer. In a method aspect, a first area of a sample is flooded with a flood beam to control charge on a surface of the sample. A second area of the sample is inspected with an inspection beam.
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: September 30, 2003
    Assignee: KLA-Tencor Technologies Corporation
    Inventors: Mark A. McCord, David Walker, Jun Pei, Neil Richardson
  • Patent number: 6610980
    Abstract: A novel dual beam low energy electron microscope (LEEM) apparatus for inspecting semiconductor circuits or masks. Direct imaging records many pixels in parallel, offering higher inspection rates than prior art scanning methods. A low energy flood beam is superimposed with a second, higher energy flood beam. The use of two beams avoids charging effects upon insulating or partially insulating substrates. Under appropriate conditions, the net charging flux to each image element can be balanced on a pixel by pixel, as well as global basis. Either the low energy or the higher energy beam may be used to form an image of the surface. An electron optical apparatus and configuration for this dual beam LEEM is described.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: August 26, 2003
    Assignee: KLA-Tencor Corporation
    Inventors: Lee Veneklasen, David L. Adler, Matthew Marcus
  • Publication number: 20030071212
    Abstract: A method of tracing drains using non-toxic fluorescent tracers is described and claimed.
    Type: Application
    Filed: September 28, 2001
    Publication date: April 17, 2003
    Inventors: Michael J. Weiland, John E. Hoots
  • Patent number: 6531697
    Abstract: A scanning transmission electron microscope (STEM) has an electron source for generating a primary electron beam and an electron illuminating lens system for converging the primary electron beam from the electron source onto a specimen for illumination. An electron deflecting system is provided for scanning the specimen with the primary electron beam. The STEM also has a scattered electron detector for detecting scattered electrons transmitted through the specimen. A projection lens system projects the scattered electrons onto a detection surface of the scattered electron detector. An image displaying device displays the scanning transmission electron microscope image of the specimen using a detection signal from the scattered electron detector. A detection angle changing device for establishes the range of the scattering angle of the scattered electrons detected by the scattered electron detector.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: March 11, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Kuniyasu Nakamura, Hiroshi Kakibayashi, Mikio Ichihashi, Shigeto Isakozawa, Yuji Sato, Takahito Hashimoto
  • Patent number: 6531696
    Abstract: Systems and method for determining a source of abrasion in film equipment by using a test film having fluorescent material thereon and illuminating the film equipment using a fluorescence creating light source to cause fluorescence of any part having fluorescent material deposited thereon by the test film.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: March 11, 2003
    Inventor: John T. Pregent, Jr.
  • Patent number: 6525315
    Abstract: An ultraviolet light permeable filter for an ultraviolet detection light is equipped on a filter glass surface with a dielectric multi-film layer which allows a visible radiation of wave length from 694 nm to 780 nm to reflect on the layer. The wave length also does not penetrate through the multi-flim layer. This filter prevents a reddish halation occurrence during an inspection display of a flaw detection light, which is the main cause of overlooking a scratch or flaw pattern.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: February 25, 2003
    Assignee: Marktec Corporation
    Inventor: Masami Motoyama
  • Publication number: 20030029995
    Abstract: Apparatus and methods for measuring oil flow velocity in a well are provided which utilize fluorescence quenching. A marker which quenches the natural fluorescence of crude oil is chosen and injected into the oil flow at a first location. At a second location, the oil flow is subjected to light at a wavelength which will cause oil to naturally fluoresce. The fluorescence signal is detected at the second location by a sensing probe. The time that it takes for the quenching marker to move from the first location to the second location is measured by sensing a decrease in fluorescence due to the quencher. Fluid velocity is determined by dividing the distance between the marker-ejection point and the optical probe position by the time it took the marker to move that distance.
    Type: Application
    Filed: January 23, 2002
    Publication date: February 13, 2003
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Oliver C. Mullins, Donald Charles McKeon, Felix Chen, Xu Wu, Elizabeth B. Dussan, Henning Groenzin, Clelia Canuel
  • Patent number: 6508957
    Abstract: The present invention relates to methods for using a maleimide of formula (I) with the proviso that R1 and R2 do not simultaneously stand for phenyl or a maleimide of formula Ia as UV fluorescent material for void detection and for the preparation of scintillators films, luminescent solar energy collectors, organic electroluminescent devices, printing inks, non-impact printing inks, electrophotographic toners, color filters, and colored high molecular organic material.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: January 21, 2003
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Kazuhiko Kunimoto, Junji Otani, Kunihiko Kodama, Hiroshi Yamamoto, Patrick Verhoustraeten, Sonia Megert, Adalbert Braig
  • Patent number: 6501075
    Abstract: The present application reveals an improved filter for transmitting electromagnetic radiation in an excitation frequency band (300-475 nm) and for reflecting electromagnetic radiation in higher bands (greater than 475 nm). The higher bands comprise the visible emission band and the infrared band. The improved filter can be prepared by applying an infrared hot-mirror coating to a dichroic filter or the infrared hot-mirror coating can be applied to or used in conjunction with a blue filter.
    Type: Grant
    Filed: April 11, 2000
    Date of Patent: December 31, 2002
    Assignee: UView Ultraviolet Systems, Inc.
    Inventor: Phil Trigiani
  • Publication number: 20020195560
    Abstract: A reliable and cost-effective method and composition is provided for inspecting manufactured components and detecting defects therein. In particularly, a method is provided for optically detecting defects in manufactured components during the manufacturing process by the incorporation of a fluorescent dye into a manufacturing fluid.
    Type: Application
    Filed: June 25, 2001
    Publication date: December 26, 2002
    Inventor: Tom Yonushonis