Patents by Inventor Tetsuo KAN

Tetsuo KAN 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: 10290823
    Abstract: Provided is a photodetector including: an organic semiconductor (20) having protrusions; a metal layer (30) added onto the organic semiconductor (20), for promoting at least one of localized plasmon resonance and surface plasmon resonance in which electrons are excited through irradiation of detection light; and a semiconductor (40) forming a junction with the metal layer (30), for allowing electrons excited through the plasmon resonance to pass through the junction (40a) with the metal layer (30).
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: May 14, 2019
    Assignees: Olympus Corporation, The University of Tokyo, Kyushu University, National University Corporation
    Inventors: Yoshiharu Ajiki, Isao Shimoyama, Kiyoshi Matsumoto, Tetsuo Kan, Koichi Karaki, Yasuo Sasaki, Masayuki Yahiro, Akiko Hamada, Chihaya Adachi
  • Patent number: 9546948
    Abstract: A gas sensor is proposed, which can detect a gas by a novel configuration while reduction in size is achieved. The gas sensor (1) does not need a light absorption path as in a prior art so that the size can be reduced correspondingly. Further, in the gas sensor (1), a gas is absorbed in an ionic liquid (IL), and a dielectric constant of the ionic liquid (IL) that changes by absorbing the gas can be measured according to a change in light intensity that occurs by a surface plasmon resonance phenomenon in a metal layer (7). Thus, the gas sensor (1) including the novel configuration that can detect a gas based on the change in the light intensity can be realized.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: January 17, 2017
    Assignees: The University of Tokyo, Omron Corporation
    Inventors: Isao Shimoyama, Kiyoshi Matsumoto, Tetsuo Kan, Yusuke Takei, Hidetoshi Takahashi, Koutaro Ishizu, Masahito Honda
  • Publication number: 20160064679
    Abstract: Provided is a photodetector including: an organic semiconductor (20) having protrusions; a metal layer (30) added onto the organic semiconductor (20), for promoting at least one of localized plasmon resonance and surface plasmon resonance in which electrons are excited through irradiation of detection light; and a semiconductor (40) forming a junction with the metal layer (30), for allowing electrons excited through the plasmon resonance to pass through the junction (40a) with the metal layer (30).
    Type: Application
    Filed: November 9, 2015
    Publication date: March 3, 2016
    Applicants: OLYMPUS CORPORATION, The University of Tokyo, KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Yoshiharu AJIKI, Isao SHIMOYAMA, Kiyoshi MATSUMOTO, Tetsuo KAN, Koichi KARAKI, Yasuo SASAKI, Masayuki YAHIRO, Akiko HAMADA
  • Patent number: 9188497
    Abstract: There is provided a differential pressure sensor capable of measuring a pressure fluctuation with a simple structure. The differential pressure sensor includes a main body formed with an air chamber, and an opening that causes an interior of the air chamber to be in communication with an exterior, and a detector provided at the opening. The detector includes a cantilever provided in a manner tiltable so as to block off the opening, and the cantilever is formed with a Piezo resistor layer.
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: November 17, 2015
    Assignee: The University of Tokyo
    Inventors: Isao Shimoyama, Kiyoshi Matsumoto, Tomoyuki Takahata, Tetsuo Kan, Kenta Kuwana, Hidetoshi Takahashi, Minh-Dung Nguyen
  • Publication number: 20150009503
    Abstract: A gas sensor is proposed, which can detect a gas by a novel configuration while reduction in size is achieved. The gas sensor (1) does not need a light absorption path as in a prior art so that the size can be reduced correspondingly. Further, in the gas sensor (1), a gas is absorbed in an ionic liquid (IL), and a dielectric constant of the ionic liquid (IL) that changes by absorbing the gas can be measured according to a change in light intensity that occurs by a surface plasmon resonance phenomenon in a metal layer (7). Thus, the gas sensor (1) including the novel configuration that can detect a gas based on the change in the light intensity can be realized.
    Type: Application
    Filed: December 27, 2012
    Publication date: January 8, 2015
    Inventors: Isao Shimoyama, Kiyoshi Matsumoto, Tetsuo Kan, Yusuke Takei, Hidetoshi Takahashi, Koutaro Ishizu, Masahito Honda
  • Publication number: 20140000378
    Abstract: There is provided a differential pressure sensor capable of measuring a pressure fluctuation with a simple structure. The differential pressure sensor includes a main body formed with an air chamber, and an opening that causes an interior of the air chamber to be in communication with an exterior, and a detector provided at the opening. The detector includes a cantilever provided in a manner tiltable so as to block off the opening, and the cantilever is formed with a Piezo resistor layer.
    Type: Application
    Filed: January 11, 2012
    Publication date: January 2, 2014
    Applicant: THE UNIVERSITY OF TOKYO
    Inventors: Isao Shimoyama, Kiyoshi Matsumoto, Tomoyuki Takahata, Tetsuo Kan, Kenta Kuwana, Hidetoshi Takahashi, Minh-Dung Nguyen
  • Publication number: 20120250149
    Abstract: An ultrahigh-wavenumber transmitting element has at least two anisotropic media having slopes of isofrequency curves complementary with each other. The at least two anisotropic media are layered so as to transmit ultrahigh wavenumber.
    Type: Application
    Filed: March 30, 2012
    Publication date: October 4, 2012
    Inventors: Koichi Karaki, Yasuo Sasaki, Takuya Tsukagoshi, Yoshiharu Ajiki, Isao Shimoyama, Kiyoshi Matsumoto, Tetsuo Kan, Yusuke Takei, Kentaro Noda
  • Publication number: 20110152694
    Abstract: A blood-pressure sensor is constituted of an elastic body which is fitted to a blood-vessel outer wall, and a shape of which is deformed by force generated by pulsing motion of expansion and contraction of the blood vessel, and a plurality of nanosized particles dispersedly provided in the elastic body, and when the force is applied to the sensor in a state where the sensor is irradiated with light, the magnitude of the force is measured on the basis of intensity of scattered light from the particles or emission intensity of fluorescence from the particles, the intensity of the scattered light or emission intensity of the fluorescence corresponding to a change in distance between the particles.
    Type: Application
    Filed: September 30, 2010
    Publication date: June 23, 2011
    Applicants: OLYMPUS CORPORATION, THE UNIVERSITY OF TOKYO
    Inventors: Isao SHIMOYAMA, Kiyoshi MATSUMOTO, Tetsuo KAN, Eiji IWASE, Asuto KOYAMA, Yoshiharu AJIKI