Patents Examined by Elizabeth Gemmell
  • Patent number: 6944259
    Abstract: A three-dimensional image of an object scanned with a plurality of cone-beam projections from a number of source positions is reconstructed using a method wherein intermediate transform functions are obtained from two-dimensional images of radiation attenuation in the scanned object. The intermediate transform functions are then filtered over the two-dimensional attenuation images using a moving-frame technique. The second-order radial derivative of the Radon transform can then be backprojected to generate an intermediate, locally-reconstructed, three-dimensional image. After repetition of this process, the plurality of intermediate, locally reconstructed, three-dimensional images are summed to obtain an ultimate, reconstructed, three-dimensional image of the object.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: September 13, 2005
    Assignee: Massachusetts Institute of Technology
    Inventor: Xiaochun Yang
  • Patent number: 6826256
    Abstract: It is an object of one of the inventions to acquire a radiation image in which a stripe pattern originating from a scattered ray removing grid is less apt to interfere with observation. An image acquisition apparatus of one of the inventions includes a sensor for spatially sampling a radiation transmission distribution of an object to be imaged at a spatial sampling interval and acquiring an image of the object, and a scattered ray removing grid for removing scattered rays from the object, wherein an interval of elements of the scattered ray removing grid is set such that a spatial frequency of a stripe pattern, in the image, which originates from the scattered ray removing grid becomes not greater than 40% of a sampling frequency that is a reciprocal of the spatial sampling interval.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: November 30, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hitoshi Inoue
  • Patent number: 6800993
    Abstract: Flat CRT panel including a substantially flat outside surface, and an inside surface of a fixed curvature, wherein the inside surface of the panel is formed to meet a condition of {(Rh+Rv)/2}×Rd being in the range of 8.0-10.3, where “Rd” denotes a representative diagonal sectional radius of curvature, “Rh” denotes a representative long-axis sectional radius of curvature, and “Rv” represents a representative short-axis sectional radius of curvature when an effective screen size of the panel is greater than 25″, thereby reducing thermal breakage, and permitting fabrication of lighter panel.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: October 5, 2004
    Assignee: LG. Philips Displays Korea Co., Ltd.
    Inventors: Gi Hoon Tho, Sung Han Jung
  • Patent number: 6781309
    Abstract: Described is a plasma switched organic electroluminescent display, which includes an electroluminescent part including a cathode layer, an electroluminescent layer on the cathode layer, and an anode layer on the electroluminescent layer, a first power supply unit connected electrically to the anode layer and disconnected electrically to the cathode layer so as to supply the electroluminescent layer with a first power, a plasma generating part generating a plasma wherein the plasma becomes contacted with the cathode layer, and a second power supply unit generating the plasma by supplying the plasma generating part with a second power, wherein the cathode layer is connected electrically to the first power supply unit through the plasma, thereby enabling to emit light by organic electroluminescent as well as drive the display by a low driving voltage using a plasma discharge as a switch.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: August 24, 2004
    Assignee: CLD, Inc.
    Inventors: Do-hyun Choi, Byung-hyun Byun, Seung-jun Yi
  • Patent number: 6734629
    Abstract: A discharge vessel with an excimer fill comprises a cap, electrodes and a fill having at least one noble gas and a halogen, which, when the lamp is operating, together form an excimer, the discharge vessel being manufactured from quartz glass. The inner wall of the discharge vessel is completely covered with a passivation layer of a metal oxide of the metals Al, Hf, Y or Sc or the mixed oxides thereof, the layer having an amorphous structure and its layer thickness being 20 to 200 nm.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: May 11, 2004
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Erich Arnold, Renate Hirrle, Christina Wille, Hans-Dieter Witzke
  • Patent number: 6734630
    Abstract: A metal halogen electrodeless illumination lamp including a microwave generator coupled via a coupling means with a microwave cavity which contains a discharge bulb, and a microwave screen its function being performed by some part of the microwave cavity walls, which is transparent to optical radiation The discharge bulb contains a fill mixture of metal halogens, such as Bi halide, a mixture of Sn and Al and a mixture of their compounds, which emits visible optical radiation featuring a molecular spectrum.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: May 11, 2004
    Assignees: LG Electronics Inc.
    Inventors: Joon-Sik Choi, Hyung-Joo Kang, Hyo-Sik Jeon, Yong-Seog Jeon, Han-Seok Kim, Yuri Brodsky, Vladimir Vdovin, Sergei Golubev, Nikolai Kovalev, Yuri Kalyazin, Yuri Korotchkov, Andrei Perminov
  • Patent number: 6731054
    Abstract: A shadow mask for use in a cathode ray tube comprises a mask body having a mask effective section where a number of electron beam passage apertures are formed and a skirt portion provided at a peripheral edge of the mask effective section, and a mask frame arranged to be layered outside the skirt portion. The mask frame and the skirt portion are resistance-welded to each other at a plurality of portions. At each welding portion, a plurality of concave and/or convex portions each having a smaller area than an area of a contact surface of an electrode for resistance-welding are formed at an inner surface portion of the skirt portion which the electrode contacts.
    Type: Grant
    Filed: November 21, 2000
    Date of Patent: May 4, 2004
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yutaka Takeuchi, Kazumasa Hirayama, Masao Kobayashi
  • Patent number: 6720718
    Abstract: An efficient and safe lamp with a tungsten halogen capsule may be formed by using a two stage pyrophoric fuse as part of the electrical path to the capsule. The thin walled lamp with tungsten halogen capsule and two stage pyrophoric fuse yields a more efficient, less expensive and yet still safe tungsten halogen lamp. The thin walled lamp with tungsten halogen capsule and pyrophoric fuse provides a safe, thin walled outer envelope tungsten halogen lamp, provide a lamp with an oxygen sensitive fuse operable in low wattage lamps, provides a method manufacturing a pyrophoric fuse sensitive to moderate temperatures, provides an inexpensive and practical, low wattage, thin walled tungsten halogen lamp with a pyrophoric fuse.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: April 13, 2004
    Assignee: Osram Sylvania Inc.
    Inventors: Carl Douglas Trent, Jeffrey Paul Buschmann, Michael R. Kling
  • Patent number: 6720725
    Abstract: A picture display device comprising a cathode ray tube (1) with an elongated display screen (8) and a deflection system (9) is described. The deflection power is reduced by two means. The deflection system (9) is arranged to scan the lines in the direction of the short axis (22) of the display screen (8), and the cone portion (3) of the cathode ray tube (1) has an elongated cross-section (54) whose aspect ratio is larger than or equal to the aspect ratio of the display screen (8), thereby enabling the deflection system (9), and in particular the line deflection subsystem (12), to be positioned closer to the electron beam envelope (51), which reduces magnetic losses.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: April 13, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Marteijn De Jong, Marcellinus Petrus Carolus Michael Krijn, Pim Theo Tuyls, Boris Skoric, Michel Cornelis Josephus Marie Vissenberg
  • Patent number: 6720722
    Abstract: A color picture tube having a tensioned mask supported by a frame mounted within the tube. The frame is constructed of a carbon steel material, and the mask is constructed of a nickel alloy material that expands substantially less per unit length than does the frame in the normal operating temperature range of the tube, and expands substantially the same per unit length as the frame in the higher thermal cycling temperature range used during tube processing.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: April 13, 2004
    Assignee: Thomson Licensing S.A.
    Inventors: Rein Roman Mutso, Edward Richard Garrity, Jr., Christopher Lee French
  • Patent number: 6703772
    Abstract: A plasma display panel has an improved cell electrode structure including: a pair of sustaining and scanning electrodes which are approximately similar or equal in area to each other, and which are different from each other in pattern shape. Each of the scanning electrode alignments further includes a plurality of scanning electrodes. Adjacent two of the scanning electrodes are separated from each other by the separation wall. Each of the sustaining electrode alignments further includes a plurality of sustaining electrodes. Adjacent two of the sustaining electrodes are separated from each other by the separation wall.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: March 9, 2004
    Assignee: NEC Corporation
    Inventors: Hiroshi Hasegawa, Nobumitsu Aibara, Naoto Hirano, Tadashi Nakamura, Yoshito Tanaka, Hajime Homma, Kota Araki
  • Patent number: 6696779
    Abstract: The present invention relates to a yoke ring for use in a deflection unit in a cathode ray tube (CRT). The yoke ring having a neck and a flared side, and being defined by an inner and an outer contour. According to the invention, the inner contour is periodically deformed in the radial direction, the contour having at least two local minima and maxima. This deformation influences the magnetic field generated by the coils in the CRT, leading to improved front-of-screen performance. In particular, astigmatism, coma and raster errors are reduced.
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: February 24, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Pim Theo Tuyls
  • Patent number: 6690109
    Abstract: An organic electroluminescence element is composed of a plurality of first electrodes 18 that are disposed on a substrate 14 in matrix, a second electrode 26 that is disposed with being confronted with each of the plurality of first electrodes 18 and a emissive layer formed between each of the plurality of first electrodes and the second electrode on each of the plurality of first electrodes, wherein the emissive layer is composed of a blue (B) emissive layer, a green (G) emissive layer and a red (R) emissive layer as a set of pixels, the organic electroluminescence element is further characterized in that the B emissive layer contains a B emissive material, the G emissive layer contains B and G emissive materials, and the R emissive layer contains B and G and R emissive materials. Accordingly, the organic electroluminescence element is small in size and high in definition, performance and productivity.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: February 10, 2004
    Assignee: Victor Company of Japan, Ltd.
    Inventor: Takumu Tada
  • Patent number: 6686681
    Abstract: A discharge lamp (1) with a base (2), suitable for operation by means of a dielectrically impeded discharge, has a spacing between the base (2) and the outer wall of the discharge vessel (3). The overall efficiency of the generation of UV radiation is improved thereby.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: February 3, 2004
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluelampen mbH
    Inventors: Claus Allgeier, Ulrich Genger, Hans-Juergen Keck, Reinhold Wittkoetter
  • Patent number: 6680574
    Abstract: A gas discharge lamp comprising an electrode including a carrier of an electrode metal, selected from the group formed by tungsten and tungsten-containing alloys, and a first coating of a first electron-emitting material, which material comprises an alkaline earth metal oxide, selected from the group formed by calcium oxide, strontium oxide and barium oxide, and a rare earth metal oxide, selected from the group formed by scandium oxide, yttrium oxide and europium oxide, in a quantity a that ranges from 0.1 to 10 wt. % by weight, is characterized by a longer service life, a higher resistance to poisoning and a robust manner of coping with a rapid succession of switching operations, as well as a short ignition stage.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: January 20, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Georg Gaertner, Wim Van Den Hoek
  • Patent number: 6677699
    Abstract: The filament structure comprises a filament with a coiled portion and an uncoiled portion. A tube is disposed on a free end of the uncoiled portion. The tube has two ends and a passage with a central axis extending between the two ends. At least one of the ends comprises an extension which projects positively above a medium plane of the end of the tube. This medium plane is perpendicular to the central axis of the tube. A method for positioning such a tube on the free end of a filament comprises the following steps. The free end of the filament is inserted in a slit between two parallel support surfaces so that the free end is projecting upward. The tube is placed on the free end of the filament so that the extension of the tube projects downward towards the support surfaces and the lower end of the tube abuts at least one of the support surfaces.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: January 13, 2004
    Assignee: General Electric Company
    Inventor: Ernö Kuti
  • Patent number: 6676291
    Abstract: The present invention discloses an (x-ray) bone densitometer comprising a stand including an “L”-shape handle consisting of an a horizontal and a vertical plate capable of rotating between an horizontal position and a vertical position on the horizontal plate, a handle groove, a first guide pin and a second guide pin, and a stand groove; and a housing including an opening formed perpendicular in the center of the upper part (of said housing), the opening having one or more of the first and the second guide grooves for guiding the movements of first and said second guide pins, a stand settle groove for settling the stand when the stand is settled horizontally, and a stand erecting groove for supporting the stand when the stand is erected in slope.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: January 13, 2004
    Assignee: Osteosys Co., Ltd.
    Inventor: Young Bok Ahn
  • Patent number: 6677700
    Abstract: A color cathode-ray tube has an evacuated envelope with an electron gun therein for generating an electron beam. The envelope further includes a faceplate panel having a luminescent screen with phosphor elements on an interior surface thereof. A focus mask, having a plurality of spaced-apart first conductive strands, is located adjacent to an effective picture area of the screen. The spacing between the first conductive strands defines a plurality of apertures substantially parallel to the phosphor elements on the screen. Each of the first conductive strands has a substantially continuous insulating material layer formed on a screen-facing side thereof. A plurality of second conductive wires are oriented substantially perpendicular to the plurality of first conductive strands and are bonded thereto by the insulating material layer. The insulating material layer is partially or slightly conductive to an extent sufficient to prevent an accumulation of a significant electrical charge.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: January 13, 2004
    Assignee: Thomson Licensing S. A.
    Inventors: Samuel Paul Benigni, Wilber Clarence Stewart, Philip Michael Heyman, Richard William Nosker
  • Patent number: 6674238
    Abstract: In a plasma display panel, a partition wall 15 surrounds each of discharge cells to define the discharge cells. Each of the discharge cells is divided by a second transverse wall 15B into a display discharge cell C1 which is opposite transparent electrodes Xa, Ya of paired row electrodes X, Y to provide for a sustaining discharge; and an addressing discharge cell C2 which is opposite a bus electrode Yb of the row electrode Y to provide for an addressing discharge caused between the bus electrode Yb and a column electrode D. A clearance r is provided between the discharge cell C1 and the addressing discharge cell C2 for communication between the cells C1 and C2.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: January 6, 2004
    Assignees: Pioneer Corporation, Pioneer Display Products Corporation
    Inventors: Eishiro Otani, Hitoshi Taniguchi, Chiharu Koshio, Yoichi Sato
  • Patent number: 6674240
    Abstract: A gas discharge lamp, in particular a low-pressure gas discharge lamp, comprising an electrode including a carrier of an electrode metal and a first electrode coating of an electron-emitting material, which material comprises a metal powder preparation of a powder of a reducing metal selected from the group formed by aluminum, silicon, titanium, zirconium, hafnium, tantalum, molybdenum, tungsten and the alloys thereof, which metal powder preparation is provided with a powder coating containing a noble metal selected from the group formed by rhenium, cobalt, nickel, ruthenium, palladium, rhodium, iridium and platinum, and the alloys thereof, and said material comprising at least one alkaline earth metal oxide selected from the group formed by calcium oxide, strontium oxide and barium oxide, is characterized by a uniform emission current and a long service life.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: January 6, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Georg Gärtner, Wilem Jacobus Van Den Hoek