Patents by Inventor Hirofumi Tanaka

Hirofumi Tanaka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6833719
    Abstract: An apparatus provided for evaluating electrical characteristics by bringing a plurality of metal probes in contact with a sample. A metal probe is formed on a free end of a cantilever on which are formed a resistor, two electrodes for resistance detection, and an electrode for measuring electrical characteristics. A tip of the metal probe projects beyond the free end of the cantilever. The probe position is controlled by an atomic force microscopy.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: December 21, 2004
    Assignees: Japan Science and Technology Corporation, Riken
    Inventors: Tsuyoshi Hasegawa, Masakazu Aono, Tomonobu Nakayama, Taichi Okuda, Kazuya Terabe, Hirofumi Tanaka
  • Publication number: 20040181896
    Abstract: In the cleaning using the self-propelled cleaning device, firstly the cleaning device moves alongside the wall surface and then a reference direction is set. Next, the cleaning device advances alongside the wall surface by a prescribed distance, makes a right-angle turn, and travels in the reference direction. When the cleaning device reaches the surface of the opposing wall, it moves in a spiraling manner. At that time, the orientation angle of the cleaning device estimated using a gyro sensor is checked and corrected. If an obstacle is encountered while traveling, the cleaning device travels on a path that avoids the obstacle or travels in a spiral manner in a region in front of the obstacle.
    Type: Application
    Filed: March 17, 2004
    Publication date: September 23, 2004
    Inventors: Saku Egawa, Yutaka Arai, Ryoko Ichinose, Yasuhiro Asa, Hirofumi Tanaka
  • Patent number: 6778568
    Abstract: A holding member, which beforehand fixedly holds a semiconductor laser element and has thermal conductivity, is fixed to a base member, which is fixed to a case and which has thermal conductivity, by the use of a thermal type adhesive member having thermal conductivity so that the semiconductor laser element is disposed at a predetermined optical position where optical adjustment has been carried out with respect to an optical system of the case.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: August 17, 2004
    Assignee: Pioneer Corporation
    Inventors: Shinnosuke Fukuda, Masaki Okayasu, Hirofumi Tanaka, Takeshi Ishida, Kiyoshi Shimomura
  • Patent number: 6720714
    Abstract: A vibrating gyroscope includes a vibrator having a node and a support member having a thin flexible portion and an expanded portion which is connected to the thin flexibly portion and has a larger area than the thin flexible portion. The expanded portion of the support member is fixed to the vibrator at the node.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: April 13, 2004
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Nobuyuki Ishitoko, Katsumi Fujimoto, Yoshiji Okamoto, Hirofumi Tanaka
  • Publication number: 20030226232
    Abstract: An object of the present invention is to provide an electric vacuum cleaner equipped with a compact and easy-to-operate cyclonic separation type dust collector.
    Type: Application
    Filed: February 25, 2003
    Publication date: December 11, 2003
    Inventors: Shoji Hayashi, Yukiji Iwase, Yasuyuki Hiruta, Kyouichi Kanno, Susumu Sato, Naofumi Hitagawa, Naruhiko Suzuki, Yasunori Kotaka, Hirofumi Tanaka, Koichi Umezawa
  • Patent number: 6587287
    Abstract: A multilayer ceramic substrate 11 is used, and a prism 14 serving as a component of a hybrid optical module and a chip 12 on which an optoelectric converting element is mounted are mounted on different layers of the multilayer ceramic substrate. The thickness of the chip on which the optoelectric converting element is mounted is substantially equal to the depth of the layer of the multilayer ceramic substrate on which the chip is mounted.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: July 1, 2003
    Assignee: Pioneer Corporation
    Inventors: Shinnosuke Fukuda, Masaki Okayasu, Hirofumi Tanaka
  • Patent number: 6559610
    Abstract: A continuous wave electron-beam accelerator that accelerates a continuous wave electron beam having a large average current includes an electron beam generator, an electron-beam accelerating unit using a radio-frequency electric field having a frequency of approximately 500 MHz to accelerate an continuous wave electron beam, and electron-beam bending units located across the electron-beam accelerating unit and that bend the continuous wave electron beam a number of times. Each electron-beam bending unit includes divided magnets having identical-polarity magnetic fields, and controls the continuous wave electron beam so that the beam passes through the electron-beam acceleration unit a number of times on almost the same path.
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: May 6, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Hirofumi Tanaka
  • Publication number: 20030031429
    Abstract: A resin package 1 is hollowed in order to house components of a hybrid optical module. Laser devices 7 and 8 are die-bonded to metal frames 2 and 3, respectively. Ends of the metal frames are bent, and then embedded into the resin package 1 as in-resin bent portions 4, 5, and 6. In a frame led-out portion 10, portions of the metal frames 2 and 3 are led out to the outside of the resin package 1. The led-out portion 10 is made in contact with a metal plate, an aluminum die cast member, or the like which is outside the package, whereby the heat radiation effect is improved.
    Type: Application
    Filed: December 21, 2000
    Publication date: February 13, 2003
    Inventors: Masaki Okayasu, Shinnosuke Fukuda, Hirofumi Tanaka
  • Publication number: 20020194012
    Abstract: Transaction of electric power has been conventionally conducted mainly to cope with power demand of a large-volume customer, and in which a power customer presents a power demand for covering a certain period of time, and power companies tenders for the offer. In this manner, the transaction was done in reliance on manpower.
    Type: Application
    Filed: December 11, 2001
    Publication date: December 19, 2002
    Applicant: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takaaki Maekawa, Hirofumi Tanaka, Tadahiro Gouda, Yukitoki Tsukamoto, Marta Marmiroli
  • Publication number: 20020178800
    Abstract: An apparatus is provided for evaluating electrical characteristics by bringing a plurality of metal probes in contact with a minute area with low contact resistance.
    Type: Application
    Filed: June 19, 2002
    Publication date: December 5, 2002
    Inventors: Tsuyoshi Hasegawa, Masakazu Aono, Tomonobu Nakayama, Taichi Okuda, Kazuya Terabe, Hirofumi Tanaka
  • Publication number: 20020047502
    Abstract: A vibrating gyroscope includes a vibrator having a node and a support member having a thin flexible portion and an expanded portion which is connected to the thin flexibly portion and has a larger area than the thin flexible portion. The expanded portion of the support member is fixed to the vibrator at the node.
    Type: Application
    Filed: September 10, 2001
    Publication date: April 25, 2002
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Nobuyuki Ishitoko, Katsumi Fujimoto, Yoshiji Okamoto, Hirofumi Tanaka
  • Patent number: 6357820
    Abstract: A work vehicle is provided that permits easy routine daily inspection services of a rear mounted engine in the vehicle. The vehicle has a cab covering a rear engine compartment. The cab is pivotally mounted on the frame of the vehicle. An engine hood is in turn pivotally mounted on the cab and covers the engine in the engine compartment. Accordingly, the hood can be pivoted or rotated to expose the engine for routine daily maintenance while the cab and the engine hood can be pivoted or rotated to expose the entire engine compartment for periodic heavy duty maintenance.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: March 19, 2002
    Assignee: Komatsu Limited
    Inventors: Isao Nagatsuka, Takeshi Endou, Junji Mimuro, Hirofumi Tanaka
  • Publication number: 20020008450
    Abstract: A continuous wave electron-beam accelerator that accelerates a continuous wave electron beam having a large average current includes an electron beam generator 11, an electron-beam accelerating unit 13 using a radio-frequency electric field having a frequency of approximately 500 MHz to accelerate an continuous wave electron beam, and electron-beam bending units 14, 15, 16 that are provided across the electron-beam accelerating unit and that bend the continuous wave electron beam a number of times. Each electron-beam bending unit includes divided magnets 15,16 having identical-polarity magnetic fields, and controls the continuous wave electron beam to pass through the electron-beam acceleration unit 13 a number of times on almost the same path.
    Type: Application
    Filed: March 8, 2001
    Publication date: January 24, 2002
    Inventor: Hirofumi Tanaka
  • Publication number: 20010040741
    Abstract: A multilayer ceramic substrate 11 is used, and a prism 14 serving as a component of a hybrid optical module and a chip 12 on which an optoelectric converting element is mounted are mounted on different layers of the multilayer ceramic substrate. The thickness of the chip on which the optoelectric converting element is mounted is substantially equal to the depth of the layer of the multilayer ceramic substrate on which the chip is mounted.
    Type: Application
    Filed: December 28, 2000
    Publication date: November 15, 2001
    Inventors: Shinnosuke Fukuda, Masaki Okayasu, Hirofumi Tanaka
  • Patent number: 6288478
    Abstract: A vibrating gyroscope includes a vibrator having a node and a support member having a thin flexible portion and an expanded portion which is connected to the thin flexibly portion and has a larger area than the thin flexible portion. The expanded portion of the support member is fixed to the vibrator at the node.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: September 11, 2001
    Assignee: Murata Manufacturing Co. Ltd.
    Inventors: Nobuyuki Ishitoko, Katsumi Fujimoto, Yoshiji Okamoto, Hirofumi Tanaka
  • Patent number: 6266810
    Abstract: For updating the entire region of the control software stored in the memory of the information terminal, the invention provides a system and apparatus for remote program downloading characterized by downloading a download process program exclusive for downloading process in a region indifferent to download process by using control software at the terminal, downloading the download process program portion of the control software to be updated by using this exclusive download process program, and finally, by using this download process program, downloading the program other than the download process program portion of the control software to be updated.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: July 24, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hirofumi Tanaka, Koichi Yasutake, Tetsuji Maeda
  • Publication number: 20010006505
    Abstract: A corner portion of a hybrid optical module 4 which is closer to one of shafts or a shaft 2 when the hybrid optical module is mounted on a support member 6 is cut out in substantially parallel with the shaft 2, and by an angle which is substantially equal to an incident angle of an optical path concerning a tracking direction of an optical disk 7. A spindle motor is placed to be closer to one of the two shafts in the direction of light incidence of an optical system including the hybrid optical module. The hybrid optical module having a cut corner portion which is closer to another one of the two shafts is mounted with a pickup unit 6. The angle of the cut-out is adequately set to be in a range of 30° to 45° substantially.
    Type: Application
    Filed: December 28, 2000
    Publication date: July 5, 2001
    Inventors: Masaki Okayasu, Shinnosuke Fukuda, Hirofumi Tanaka
  • Patent number: 5990553
    Abstract: Polyimide layers having special properties are formed on the bottom surface of a metallic body for a metal-based semiconductor circuit substrate with a polyimide layer as an insulator. There are four lamination methods: (a) a method in which a layer of thermoplastic polyimide resin (1) and a layer of non-thermoplastic polyimide resin are laminated on the bottom surface of the metallic body one over another in this order, (b) a method in which a layer of thermoplastic polyimide resin (1), a layer of non-thermoplastic polyimide resin and a layer of thermoplastic polyimide resin (2) are laminated on the bottom surface of a metallic body one over another in this order, (c) a method in which a layer of non-thermoplastic polyimide resin is laminated on the bottom surface of a metallic body and (d) a method in which a layer of thermoplastic polyimide resin (2) is laminated on the bottom surface of a metallic body.
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: November 23, 1999
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Moritsugu Morita, Hirofumi Tanaka, Kazuhito Fujita
  • Patent number: 5818058
    Abstract: An acceleration orbit face of particle beam circular acceleration unit is placed at right angles to a rotation shaft of rotation unit for rotating the particle beam circular acceleration unit, beam transport unit, and irradiation field formation unit in one piece. Shields for shielding radiations and magnetism are placed symmetrically with respect to the center axis of the particle beam circular acceleration unit. Shields are placed symmetrically with respect to the center line of the particle beam circular acceleration means, thereby lessening the amount of beams coming in collision with surrounding walls from the beam acceleration orbit, decreasing the radiation leakage amount, lightening the shields, and providing a light particle beam irradiation apparatus.
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: October 6, 1998
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tetsuya Nakanishi, Shinji Sato, Akihiko Maruyama, Tetsuya Matsuda, Chihiro Tsukishima, Hirofumi Tanaka
  • Patent number: 5459393
    Abstract: A beam position monitor capable of detecting the exact position of a beam of charged particles even if the beam has a large cross sectional area with its beam center being deviated from the center of the monitor. A plurality of electrodes 4A through 4D are disposed in a vacuum chamber 3 for inducing voltages when a beam passes through the vacuum chamber. A first voltage ratio is determined based on the voltages at the respective electrodes induced by the beam to thereby detect the beam position. An antenna 10 is disposed in the vacuum chamber 3 at a beam path for inducing voltages at the respective electrodes. A second voltage ratio is determined based on the voltages at the respective electrodes induced by the antenna whereby the first voltage ratio is corrected by using the thus determined second voltage ratio. The antenna has a cross sectional area equal to or less than that of the beam.
    Type: Grant
    Filed: October 2, 1992
    Date of Patent: October 17, 1995
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hirofumi Tanaka, Tetsuya Nakanishi