Patents by Inventor Kenichi Arai

Kenichi Arai 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: 7623904
    Abstract: In a capsule 3 as a medical apparatus inserted into a body cavity, the lengthwise direction of the capsule 3 is used as an insert axis, a manipulation/input device 8, which is magnetized in a direction orthogonal to the insert axis, is disposed at the center position of the insert axis. A magnetic field generation device 4, which is disposed outside of a body, is caused to generate a vibration magnetic field in a direction parallel with the insert axis of the capsule 3 by turning on a vibration (ON/OFF) switch 8f of a manipulation/input device 8 so that couples having lines of action, which are in parallel with the insert axis, are exerted on the capsule 3, thereby the capsule 3 executes a swiveling motion about the insert axis and smoothly travels along a cavity organ.
    Type: Grant
    Filed: August 3, 2004
    Date of Patent: November 24, 2009
    Assignee: Olympus Corporation
    Inventors: Akio Uchiyama, Hironao Kawano, Takeshi Yokoi, Kenichi Arai, Kazushi Ishiyama, Masahiko Sendoh
  • Publication number: 20080281188
    Abstract: A detecting system of the position and the posture of a capsule medical device includes a main body of the capsule medical device that is inserted in a living body, a coil in a capsule that is arranged to the main body of the capsule medical device and forms a resonant circuit, a magnetic field generating device that is arranged around the living body and generates the Alternating magnetic field for generating an induced magnetic field in the coil in the capsule, and a plurality of magnetic field detecting devices that detect the strength of the induced magnetic field generated by the coil in the capsule by the magnetic field generated by the magnetic field generating device.
    Type: Application
    Filed: March 25, 2008
    Publication date: November 13, 2008
    Applicant: OLYMPUS CORPORATION
    Inventors: Isao Aoki, Akio Uchiyama, Kenichi Arai, Kazushi Ishiyama, Shin Yabukami
  • Publication number: 20080177178
    Abstract: A detecting system of the position and the posture of a capsule medical device includes a main body of the capsule medical device that is inserted in a living body, a coil in a capsule that is arranged to the main body of the capsule medical device and forms a resonant circuit, a magnetic field generating device that is arranged around the living body and generates the Alternating magnetic field for generating an induced magnetic field in the coil in the capsule, and a plurality of magnetic field detecting devices that detect the strength of the induced magnetic field generated by the coil in the capsule by the magnetic field generated by the magnetic field generating device.
    Type: Application
    Filed: March 25, 2008
    Publication date: July 24, 2008
    Applicant: OLYMPUS CORPORATION
    Inventors: Isao Aoki, Akio Uchiyama, Kenichi Arai, Kazushi Ishiyama, Shin Yabukami
  • Publication number: 20080177177
    Abstract: A detecting system of the position and the posture of a capsule medical device includes a main body of the capsule medical device that is inserted in a living body, a coil in a capsule that is arranged to the main body of the capsule medical device and forms a resonant circuit, a magnetic field generating device that is arranged around the living body and generates the Alternating magnetic field for generating an induced magnetic field in the coil in the capsule, and a plurality of magnetic field detecting devices that detect the strength of the induced magnetic field generated by the coil in the capsule by the magnetic field generated by the magnetic field generating device.
    Type: Application
    Filed: March 25, 2008
    Publication date: July 24, 2008
    Applicant: OLYMPUS CORPORATION
    Inventors: Isao Aoki, Akio Uchiyama, Kenichi Arai, Kazushi Ishiyama, Shin Yabukami
  • Patent number: 7402996
    Abstract: An instrument (10) for measuring three-dimensional motion in a living body comprises a plurality of magnetism generators (12i) fixed to one of at least two objects (44, 46) moving relatively in the living body, a plurality of magnetic field sensors (14j) fixed to the other object in order to perform noncontact detection of the magnetic field of each magnetism generator (12i), and a signal processing means (26) for calculating relative position and direction between each magnetism generator (12i) and each magnetic field sensor (14j) according to a magnetic field detected by each magnetic field sensor (14j). The number of magnetism generators (12i) and magnetic field sensors (14j) is at least five, respectively.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: July 22, 2008
    Assignee: Japan Science and Technology Agency
    Inventors: Kenichi Arai, Shin Yabukami, Hiroyasu Kanetaka
  • Publication number: 20070260105
    Abstract: In a capsule 3 as a medical apparatus inserted into a body cavity, the lengthwise direction of the capsule 3 is used as an insert axis, a manipulation/input device 8, which is magnetized in a direction orthogonal to the insert axis, is disposed at the center position of the insert axis. A magnetic field generation device 4, which is disposed outside of a body, is caused to generate a vibration magnetic field in a direction parallel with the insert axis of the capsule 3 by turning on a vibration (ON/OFF) switch 8f of a manipulation/input device 8 so that couples having lines of action, which are in parallel with the insert axis, are exerted on the capsule 3, thereby the capsule 3 executes a swiveling motion about the insert axis and smoothly travels along a cavity organ.
    Type: Application
    Filed: June 28, 2007
    Publication date: November 8, 2007
    Applicant: OLYMPUS CORPORATION
    Inventors: Akio Uchiyama, Hironao Kawano, Takeshi Yokoi, Kenichi Arai, Kazushi Ishiyama, Masahiko Sendoh
  • Publication number: 20070252586
    Abstract: An instrument (10) for measuring three-dimensional motion in a living body comprises a plurality of magnetism generators (12i) fixed to one of at least two objects (44, 46) moving relatively in the living body, a plurality of magnetic field sensors (14j) fixed to the other object in order to perform noncontact detection of the magnetic field of each magnetism generator (12i), and a signal processing means (26) for calculating relative position and direction between each magnetism generator (12i) and each magnetic field sensor (14j) according to a magnetic field detected by each magnetic field sensor (14j). The number of magnetism generators (12i) and magnetic field sensors (14j) is at least five, respectively.
    Type: Application
    Filed: March 31, 2005
    Publication date: November 1, 2007
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Kenichi Arai, Shin Yabukami, Hiroyasu Kanetaka
  • Publication number: 20070219405
    Abstract: A medical apparatus main body such as a capsule main body inserted in the body cavity includes a thrust generating mechanism such as a spiral projection. The medical apparatus main body further forms an information providing unit comprising at least one of a storing unit for storing a state of the thrust generating mechanism and a direction detecting unit for detecting the direction of the medical apparatus main body. An input unit instructs a thrust generating direction of the thrust generating mechanism and thus a control unit changes continuously or the like a thrust generating state of the thrust generating mechanism based on information from the information providing unit.
    Type: Application
    Filed: May 4, 2007
    Publication date: September 20, 2007
    Applicant: OLYMPUS CORPORATION
    Inventors: Akio Uchiyama, Hironao Kawano, Takeshi Yokoi, Hironobu Takizawa, Kenichi Arai, Kazushi Ishiyama, Masahiko Sendoh
  • Publication number: 20060169293
    Abstract: A capsule medical apparatus inserted in the body cavity includes a spiral projected portion on the outer peripheral surface of a body cavity inserting portion. The pitch, height, and cross section of the projected portion and the like are set to have proper values and shapes suitable to the advance thereof. The body cavity inserting portion has a magnet. An external magnetic guiding device applies a rotating magnetic field to the magnet and the magnetic torque acts on a magnet 36 for rotation. Thus, the medical apparatus stably advances.
    Type: Application
    Filed: December 5, 2003
    Publication date: August 3, 2006
    Inventors: Takeshi Yokoi, Hironobu Takizawa, Akio Uchiyama, Kenichi Arai, Kazushi Ishiyama, Masahiko Sendou
  • Publication number: 20060063974
    Abstract: The present invention realizes a medical device guidance system capable of improving propulsion control characteristic.
    Type: Application
    Filed: September 19, 2005
    Publication date: March 23, 2006
    Applicant: OLYMPUS CORPORATION
    Inventors: Akio Uchiyama, Hironao Kawano, Kenichi Arai, Kazushi Ishiyama, Masahiko Sendoh
  • Publication number: 20050216231
    Abstract: A detecting system of the position and the posture of a capsule medical device includes a main body of the capsule medical device that is inserted in a living body, a coil in a capsule that is arranged to the main body of the capsule medical device and forms a resonant circuit, a magnetic field generating device that is arranged around the living body and generates the Alternating magnetic field for generating an induced magnetic field in the coil in the capsule, and a plurality of magnetic field detecting devices that detect the strength of the induced magnetic field generated by the coil in the capsule by the magnetic field generated by the magnetic field generating device.
    Type: Application
    Filed: March 3, 2005
    Publication date: September 29, 2005
    Inventors: Isao Aoki, Akio Uchiyama, Kenichi Arai, Kazushi Ishiyama, Shin Yabukami
  • Patent number: 6897054
    Abstract: This application provides human H37 protein having an amino acid sequence of SEQ ID NO: 1 or NO: 2; human gene encoding the protein; cDNA of the human gene which has a base sequence of SEQ ID NO: 3 or NO: 4; DNA fragment comprising a partial sequence of the cDNA; recombinant vector having the cDNA; antibody against human H37 protein; and a method for controlling the proliferation of cells by introducing the above DNA or antibody into the cells.
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: May 24, 2005
    Assignee: Japan Science and Technology Agency
    Inventors: Kenichi Arai, Hisao Masai
  • Publication number: 20050085696
    Abstract: In a capsule 3 as a medical apparatus inserted into a body cavity, the lengthwise direction of the capsule 3 is used as an insert axis, a manipulation/input device 8, which is magnetized in a direction orthogonal to the insert axis, is disposed at the center position of the insert axis. A magnetic field generation device 4, which is disposed outside of a body, is caused to generate a vibration magnetic field in a direction parallel with the insert axis of the capsule 3 by turning on a vibration (ON/OFF) switch 8f of a manipulation/input device 8 so that couples having lines of action, which are in parallel with the insert axis, are exerted on the capsule 3, thereby the capsule 3 executes a swiveling motion about the insert axis and smoothly travels along a cavity organ.
    Type: Application
    Filed: August 3, 2004
    Publication date: April 21, 2005
    Inventors: Akio Uchiyama, Hironao Kawano, Takeshi Yokoi, Kenichi Arai, Kazushi Ishiyama, Masahiko Sendoh
  • Patent number: 6856131
    Abstract: A magnetic sensor has a monotonic response to high-frequency magnetic strengths in a frequency range up to superhigh frequencies. The magnetic sensor includes a shielded loop coil having a triplate stripline structure. The shielded loop coil has one-turn looped ground patterns formed respectively in a first layer and a fifth layer and connected parallel to each other by a via, and has an inductance L. The one-turn looped ground patterns have end electrodes facing each other across gaps, one of the end electrodes including the via, providing a combined capacitor operable at high frequencies and having a capacitance C. The product L×C of the inductance L and the capacitance C is 2.5×10?20 or less and the maximum outer circumference length of the one-turn looped ground lines is 50 [mm] or less.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: February 15, 2005
    Assignee: Ryowa Electronics Co., Ltd.
    Inventors: Yasunori Miyazawa, Katsuji Kaminishi, Masahiro Yamaguchi, Kenichi Arai
  • Publication number: 20040236180
    Abstract: A medical apparatus main body such as a capsule main body inserted in the body cavity includes a thrust generating mechanism such as a spiral projection. The medical apparatus main body further forms an information providing unit comprising at least one of a storing unit for storing a state of the thrust generating mechanism and a direction detecting unit for detecting the direction of the medical apparatus main body. An input unit instructs a thrust generating direction of the thrust generating mechanism and thus a control unit changes continuously or the like a thrust generating state of the thrust generating mechanism based on information from the information providing unit.
    Type: Application
    Filed: February 4, 2004
    Publication date: November 25, 2004
    Applicant: OLYMPUS CORPORATION
    Inventors: Akio Uchiyama, Hironao Kawano, Takeshi Yokoi, Hironobu Takizawa, Kenichi Arai, Kazushi Ishiyama, Masahiko Sendoh
  • Publication number: 20040021463
    Abstract: A magnetic sensor has a monotonic response to high-frequency magnetic strengths in a frequency range up to superhigh frequencies. The magnetic sensor includes a shielded loop coil having a triplate stripline structure. The shielded loop coil has one-turn looped ground patterns formed respectively in a first layer and a fifth layer and connected parallel to each other by a via, and has an inductance L. The one-turn looped ground patterns have end electrodes facing each other across gaps, one of the end electrodes including the via, providing a combined capacitor operable at high frequencies and having a capacitance C. The product L×C of the inductance L and the capacitance C is 2.5×10−20 or less and the maximum outer circumference length of the one-turn looped ground lines is 50 [mm] or less.
    Type: Application
    Filed: January 31, 2003
    Publication date: February 5, 2004
    Applicant: RYOWA ELECTRONICS CO., LTD
    Inventors: Yasunori Miyazawa, Katsuji Kaminishi, Masahiro Yamaguchi, Kenichi Arai
  • Patent number: 6675626
    Abstract: A press forming process involves a stretching press to form a product with a curved portion from a workpiece by imparting a pad portion to the workpiece prior to starting the press forming process. The curved portion is prepared by spreading the pad portion mainly into the longitudinal direction of the workpiece, so that the curved portion is prepared so as to have a spring back of the product minimized.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: January 13, 2004
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventor: Kenichi Arai
  • Patent number: 6421303
    Abstract: A multilayer resonance device of the invention includes regularly stacked layers each formed by alternately stacking a magnetic substance and a dielectric substance with thickness regularity, and an irregular layer including a magnetic substance, having a thickness disaccording with the thickness regularity and disposed between the regularly stacked layers. Thus, the multilayer resonance device can attain a large Faraday rotation angle, a large magneto-optical effect, and a practical total layer thickness.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: July 16, 2002
    Assignee: Fujitsu Limited
    Inventors: Mitsuteru Inoue, Kenichi Arai, Toshitaka Fujii, Masanori Abe, Koji Matsumoto
  • Patent number: 6351367
    Abstract: There is disclosed an electrostatic holding apparatus in which a voltage is applied to an conductive electrode covered with an insulating dielectric layer in order to cause the insulating dielectric layer to electrostatically attract an object. The main component of the insulating dielectric layer is ceramic containing 0.1-30 wt. % of an atomic metal, and the volume resistivity of the metal-containing ceramic at 20° C. is 108-1013 &OHgr;·cm. The metallic element is Mo or W. In the electrostatic holding apparatus, since the volume resistivity of an insulating dielectric layer of an electrostatic attraction portion is decreased, a strong electrostatic force can be generated. Also, there can be maintained the capability of allowing removal of an object at the time of stopping application of voltage. Further, since neither fine cracks nor pores remain in the insulating dielectric layer after sintering, the withstand voltage is high.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: February 26, 2002
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Hiroshi Mogi, Yoshikazu Ohtani, Kenichi Arai, Shinji Kojima, Toshimi Kobayashi
  • Publication number: 20010052255
    Abstract: A press forming process involves a stretching press to form a product with a curved portion from a workpiece by imparting a pad portion to the workpiece prior to starting the press forming process. The curved portion is prepared by spreading the pad portion mainly into the longitudinal direction of the workpiece, so that the curved portion is prepared so as to have a spring back of the product minimized.
    Type: Application
    Filed: June 15, 2001
    Publication date: December 20, 2001
    Inventor: Kenichi Arai