Patents Examined by Elizabeth Gemmell
  • Patent number: 6661170
    Abstract: Each of partition walls 25 comprises vertical walls 25a each positioned between adjacent discharge cells C1 in the row direction and extending in the column direction to form a partition between the adjacent discharge cells C1, and transverse walls 25b bridging the vertical walls 25a to define a top and bottom edge of the discharge cells C1. Each of the transverse walls 25b of the partition wall 25 is provided in a shape that its central part j1 located midway between adjacent vertical walls 25a protrudes beyond its part j2 coupled to the vertical wall 25a toward the outside of the discharge cell C1 in the column direction.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: December 9, 2003
    Assignees: Pioneer Corporation, Shizuoka Pioneer Corporation
    Inventor: Kimio Amemiya
  • Patent number: 6657390
    Abstract: To realize high irradiation efficiency and intensity stability for extending lifetime of the short-arc discharge lamp to be used for IC exposure apparatus or the like. For this end, mercury and rare gases are sealed in the inner space 21 of the discharge tube 1. The rare gases are a mixture of a relatively high molecular weight rare gas such as xenon, krypton, argon, etc. and 5%-40% by volume of a relatively low molecular weight rare gas such as helium, neon, etc. And pressure of the mixed rare gases is set to 2 atmospheric pressure or higher. The anode 3 comprises the columnar body portion 14, the tapered portion 13 and the flat portion 12.
    Type: Grant
    Filed: October 10, 2001
    Date of Patent: December 2, 2003
    Assignee: ORC Manufacturing Co., Ltd.
    Inventors: Izumi Serizawa, Masaaki Miyazawa, Akiyoshi Fujimori
  • Patent number: 6650049
    Abstract: To reduce the size of a photomultiplier tube (1), a side tube (2) is fixedly secured by welding to a stem plate (4) while an inner surface (2c) of the lower portion (2a) of the side tube (2) is maintained to be in contact with an outer edge (4b) of the stem plate (4). As a result, there is no projection like a flange at the lower portion of the photomultiplier tube (1). Therefore, though it is difficult to perform resistance welding, the outside dimensions of the photomultiplier tube (1) can be decreased, and the side tubes (9) can densely abut to one another even if the photomultiplier tubes (2) are arranged when applied. Hence, high-density arrangement of photomultiplier tubes (1) are realized by assembling metallic stem plate (4) and the side tube (2) by, for example, laser welding.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: November 18, 2003
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Hiroyuki Kyushima, Akira Atsumi, Hideki Shimoi, Tomoyuki Okada, Masuo Ito
  • Patent number: 6650041
    Abstract: An amalgam assembly for a fluorescent lamp includes a glass exhaust tubulation extending toward a base portion of the lamp, the tubulation being closed at an end thereof adjacent the lamp base portion, and a retaining structure disposed in the tubulation and retained by a pinched portion of the tubulation. A mercury amalgam body is disposed in the tubulation between the retaining structure and the tubulation closed end. The amalgam body includes lithium for wetting internal surfaces of the glass tubulation to cause the amalgam to adhere to the tubulation internal surfaces when the amalgam body is liquidized, and to thereby prevent the amalgam from flowing past the retaining structure and into the lamp envelope.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: November 18, 2003
    Assignee: Osram Sylvania Inc.
    Inventors: Richard S. Speer, Joseph E. Lester
  • Patent number: 6646372
    Abstract: A deflection yoke having a capability of correcting a lateral inner pincushion distortion with a magnetic field generated by a deflecting coil itself is provided. The deflection yoke includes a saddle-type vertical deflecting coil including a screen side bend portion, a neck side bend portion and a cone portion connecting the screen side bend portion and the neck side bend portion and is installed to a cathode ray tube. When viewing the screen side bend portion of the vertical deflecting coil from a screen side of the cathode ray tube in a direction along the tube axis, a distance between the screen side bend portion and the tube axis is the minimum at a portion close to a diagonal direction of the screen. As a result, the lateral inner pincushion distortion can be corrected with a magnetic field generated by the deflecting coil itself with a simple configuration, without adding any component for correcting the distortion and increasing a deflecting power.
    Type: Grant
    Filed: September 18, 2002
    Date of Patent: November 11, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kenichiro Taniwa, Koichi Matsumoto
  • Patent number: 6639362
    Abstract: An arc discharge vessel having electrodes disposed therein, a fill within the discharge vessel wherein the arc discharge vessel is comprised of alumina including the following dopants in parts per million: 50≦MgO≦1500; 100≦HFO2 ≦1500; 0≦ZrO2≦700; 0≦Y2O3≦300; 0≦Sc2O3≦1000; 0≦Dy2O3≦1000; 0≦Tb2O3≦1000; with the proviso that at least 5 ppm Y2O3, Sc2O3, Dy2O3, Tb2O3, or mixtures thereof is included.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: October 28, 2003
    Assignee: General Electric Company
    Inventors: Curtis Edward Scott, Jack M. Strok, Charles D. Greskovich
  • Patent number: 6628050
    Abstract: A spark plug includes a metallic shell having a stepped portion an insulator disposed inside the metallic shell, while being engaged with the stepped portion of the metallic shell, and having an axially extending through hole; a center electrode fixed within the through hole of the insulator; and a ground electrode having a tip end portion bent toward the center electrode to thereby form a spark discharge gap. The insulator is formed such that the outer diameter of the insulator decreases toward the tip end side from an engagement position at which the insulator engages the stepped portion and such that the diameter decreases stepwise at an axial position between the engagement position and the tip end of the insulator. The diameter reduction ratio Y1=D1/d1 is 0.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: September 30, 2003
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Hiroyuki Kameda, Yoshihiro Matsubara
  • Patent number: 6614172
    Abstract: A high efficiency white light emitting diode, having a light emitting diode chip, a transparent substrate, a transparent Ohmic electrode, a reflection layer, a contact diode and covered with submount with a conductive trace. The transparent substrate having a rough surface is disposed on a first surface of the chip. The transparent Ohmic electrode is disposed on a second surface of the chip and coupled with the contact electrode. The submount with the conductive trace used to carry the chip has a high thermal conductivity. The conductive trace is electrically connected to the contact electrode on the chip by soldering material. The surface of the chip is covered with fluorescent paste to absorb a portion of the light generated by the light emitting diode and to emit a complementary light, so that the observer can observe a white light.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: September 2, 2003
    Assignee: Industrial Technology Research Institute
    Inventors: Chien-Chia Chiu, Chiu-Ling Chen, Kwang-Kuo Shih
  • Patent number: 6608442
    Abstract: The invention relates to a bulb designed for emitting radiation through an emission surface ES of an envelope ENV which contains a radiation source ELM. According to the invention, the emission surface ES is substantially planar, while the radiation source defines a planar surface parallel to the emission surface. A bulb according to the invention is capable of emitting a homogeneous radiation towards a planar surface with a high radiation density.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: August 19, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Michel Morel
  • Patent number: 6597106
    Abstract: A compact fluorescent lamp comprises a plastic housing. The plastic housing includes a plastic cap and a plastic shell. A discharge tube extends from the plastic housing through openings formed in the plastic cap. The compact fluorescent lamp further comprises a tubulation which contains amalgam material and communicates with the discharge tube. A heat conducting means is integrally formed with the plastic housing which is suitable for receiving a heat conductive material forming a thermal bridge towards the tubulation.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: July 22, 2003
    Assignee: General Electric Company
    Inventors: László Tóth, Ferenc Papp, József Fülöp
  • Patent number: 6597458
    Abstract: A method and system for stabilizing and demodulating an interferometer at quadrature are described. In response to receipt of a signal indicative of optical power of the interferometer, an interferometer control system determines an optical path length correction required to stabilize the interferometer at quadrature utilizing signal amplitudes appearing at multiple harmonics of the signal. In a particularly preferred embodiment, the signal amplitudes are calculated utilizing the Goertzel algorithm, a computationally efficient discrete Fourier transform. The interferometer control system then outputs an error signal indicative of the optical path length correction. In a preferred embodiment, the error signal forms the DC component of a composite stabilization signal, whose AC component is the reference modulation signal utilized to excite a transducer to modulate the optical path length of the interferometer.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: July 22, 2003
    Assignee: Texas Christian University
    Inventors: Tristan J. Tayag, Christopher A. Belk
  • Patent number: 6597103
    Abstract: The invention relates to a display tube comprising an envelope portion 2 having an inner surface provided with a first electrically conductive layer 7 and a faceplate 1 having an inner surface provided with a second electrically conductive layer 8, which faceplate 1 is secured to the envelope portion 2 at a sealing edge 15, and further comprising a contacting layer 33 which is deposited in an area partially overlapping the first electrically conductive layer 7 and the second electrically conductive layer 8 in order to electrically connect said first electrically conductive layer 7 to said second electrically conductive layer 8.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: July 22, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Joerg Meissner, Ben Heinz Hageluken
  • Patent number: 6597099
    Abstract: With respect to a highly flat glass bulb for cathode ray tube having an effective screen diameter along a diagonal axis of a glass panel 10 of more than or equal to 500 mm, and an average radius of curvature of an outer surface of a face portion of more than or equal to 10,000 mm, a ratio between a length h of a skirt portion 13 of the glass panel and a distance H in the tube axis direction from an edge surface portion where a funnel is sealed with the glass panel to a reference line is defined so as to fall within a predetermined range in relation to a deflection angle &thgr; of the funnel representing substantial degree of divergence in the tube axis direction of the funnel, thereby achieving reduction of weight of the glass bulb while maintaining a certain mechanical strength, as well as suppressing breakage during frit seal heating process.
    Type: Grant
    Filed: January 9, 2001
    Date of Patent: July 22, 2003
    Assignee: Nippon Electric Glass Co., Ltd.
    Inventor: Masaya Kyono
  • Patent number: 6597115
    Abstract: A light source device for a video monitor including a concave reflector with a middle opening and an optical axis, said optical axis being positioned tilted obliquely and a discharge lamp including an emission part with a cathode and an anode located opposite to one another and being supported by hermetically sealed portions, one of the hermetically sealed portions being mounted in the middle opening of the concave reflector in a manner that a lengthwise axis of the discharge lamp substantially aligns with the optical axis of the concave reflector, where the anode of the discharge lamp is positioned closer to the rear reflector than the cathode of the discharge lamp, and a tip of the anode is positioned underneath an obliquely tilted plane that includes the lengthwise axis of the discharge lamp.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: July 22, 2003
    Assignee: Ushiodenki Kabushiki Kaisha
    Inventors: Kazuhiro Goto, Akihiko Sugitani
  • Patent number: 6586869
    Abstract: Electrodes of an electron gun including a pair of first and second outer rim electrode members installed to face one another and where large diameter electron beam apertures through which three electron beams pass are respectively formed, and first and second inner electrode member installed in the outer rim electrode members, respectively, and where three small diameter electron beam apertures are formed to have an in-line shape. In the above electrodes, a burring portion is formed at the edge of the large diameter electron beam aperture of the first outer rim electrode member at one side of the outer rim electrode members facing each other, and the vertical diameter of the electron beam aperture formed in the middle of the small diameter electron beam apertures formed at the first inner electrode is formed to be greater than those of the two other small diameter electron beam apertures.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: July 1, 2003
    Assignee: Samsung SDI Co., Ltd.
    Inventors: In-gyu Park, Young-kon Hong
  • Patent number: 6577047
    Abstract: A cathode ray tube capable of reducing the doming amount and suppressing the occurrence of moire stripes at the same time with improved effects to suppress the occurrence of moire stripes even more is provided. The protruding portions 28a, 28b are protruding from the ends of the horizontal direction of the aperture to the inside of the aperture 27. With regard to the horizontal cross sections of the protruding portions 28a, 28b, the portions facing each other left and right via the aperture are formed to be asymmetrical to the center line 29 in order to reduce or block the incident electron beam. By forming the protruding portions 28a, 28b, the doming amount can be reduced and the occurrence of moire stripes can be suppressed at the same time. Furthermore, by forming the portions facing each other left and right of the protruding portions asymmetrically, the effects to suppress the occurrence of moire stripes can be improved even more.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: June 10, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideharu Ohmae, Yoshikazu Demi, Masayoshi Ozaki, Mitsunori Yokomakura, Masayuki Ohmori
  • Patent number: 6566806
    Abstract: A luminescence device is formed of a substrate, and a laminated layer structure formed on the substrate including a plurality of luminescence layers emitting different luminescence colors, and a plurality of electrodes forming pairs of electrodes each sandwiching an associated luminescence layer. At least one of the plurality of electrodes are provided with apertures, through which a luminescence flux emitted from at least one of the luminescence layers is transmitted. As a result, the luminescence device can emit different luminescence colors expected to cause color mixing with each other with a minimum of positional difference leading to color irregularity.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: May 20, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tatsundo Kawai
  • Patent number: 6563258
    Abstract: A color cathode ray tube has a phosphor screen and an electron gun. The electron gun includes an electron beam generating section for emitting three in-line electron beams toward the phosphor screen and an electron beam focusing section for focusing the electron beams onto the phosphor screen. The electron beam focusing section includes at least one cup-shaped electrode having a tubular portion and a flange formed continuously from the tubular portion. The tubular portion has a generally rectangular cross section having an outwardly curved portion at each side thereof in a direction of arrangement of the three in-line electron beams in a plane perpendicular to the color cathode ray tube axis, the flange has a generally rectangular cross section having an outwardly curved portion at each side thereof in the direction of arrangement of the electron beams in the plane perpendicular to the color cathode ray tube axis, and the flange is formed with a locally thinned-down portion.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: May 13, 2003
    Assignees: Hitachi, Ltd., Hitachi Electronic Devices Co. Ltd.
    Inventors: Masato Miura, Takeshi Mera
  • Patent number: 6563265
    Abstract: An arc discharge lamp comprising an arc tube including a starting aid is provided. The starting aid comprises at least one prealloyed powder bound to the surface of the arc tube.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: May 13, 2003
    Assignee: General Electric Company
    Inventors: Karthik Sivaraman, Curtis Edward Scott, Martin L. Panchula
  • Patent number: 6563257
    Abstract: A discharge device of the invention includes multiple bonded ceramic layers with electrodes formed between the layers. It can be combined with the various MCIC technologies to produce myriad useful devices. Contacts are made to the electrodes, which may be grouped in different arrangements. The electrodes contact a hole through some or all of the ceramic layers to define a discharge cavity. Different groupings of the electrodes will produce different types of discharge. Alternating the electrodes in interdigitated pairs permits an arbitrary extension of the discharge cavity length. Having consecutive anodes or cathodes permits formation of regions where electrons may cool. Another device of the invention includes a multilayer ceramic structure having a hole formed in a least one outer layer through an electrode on the outer side of the layer and in contact with an electrode between two layers. A contact is formed to the electrode between layers through any remaining layers in the multilayer ceramic structure.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: May 13, 2003
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Bruce A. Vojak, J. Gary Eden, Sung-Jin Park, Clark Wagner