Patents by Inventor Yoko Ichikawa

Yoko Ichikawa 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).

  • Mobile antenna mounted on a vehicle body
    Patent number: 7446719
    Abstract: In a mobile antenna, an electrically conductive antenna element has a first portion with one end and the other end extending therefrom. The one end of the first portion is arranged at least adjacent to any one of a first support portion, a second support portion, and a corner portion of a body of a vehicle. The one end of the first portion is electrically connected to a feeding point. The other end of the first portion is arranged along a surface of the window such that polarized surfaces formed by the antenna element are non-orthogonal to a polarized surface of each of a vertically polarized wave and a horizontally polarized wave in radio waves.
    Type: Grant
    Filed: November 24, 2006
    Date of Patent: November 4, 2008
    Assignees: Denso Corporation, Nippon Soken, Inc.
    Inventors: Yuji Sugimoto, Toshihiro Hattori, Yoko Ichikawa, Syuichi Kono, Koji Numata, Masaaki Hisada, Toru Yamazaki
  • Angular position determining apparatus with malfunction detector
    Patent number: 7227353
    Abstract: An angular position determining apparatus is provided which includes a magnet affixed to a rotary shaft and a plurality of magnetic sensor elements and works to determine an angular position of the rotary shaft using outputs of the magnetic sensor elements. The apparatus also includes a malfunction detector which specifies which of the magnetic sensor elements is now malfunctioning and takes an action required to determine the angular position of the rotary shaft correctly in the event of such a malfunction.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: June 5, 2007
    Assignees: Denso Corporation, Nippon Soken, Inc.
    Inventors: Shigetoshi Fukaya, Yoko Ichikawa, Naoki Nakane
  • Mobile antenna mounted on a vehicle body
    Publication number: 20070097001
    Abstract: In a mobile antenna, an electrically conductive antenna element has a first portion with one end and the other end extending therefrom. The one end of the first portion is arranged at least adjacent to any one of a first support portion, a second support portion, and a corner portion of a body of a vehicle. The one end of the first portion is electrically connected to a feeding point. The other end of the first portion is arranged along a surface of the window such that polarized surfaces formed by the antenna element are non-orthogonal to a polarized surface of each of a vertically polarized wave and a horizontally polarized wave in radio waves.
    Type: Application
    Filed: November 24, 2006
    Publication date: May 3, 2007
    Applicants: DENSO CORPORATION, NIPPON SOKEN, INC.
    Inventors: Yuji Sugimoto, Toshihiro Hattori, Yoko Ichikawa, Syuichi Kono, Koji Numata, Masaaki Hisada, Toru Yamazaki
  • Angular position determining apparatus with malfunction detector
    Publication number: 20050046418
    Abstract: An angular position determining apparatus is provided which includes a magnet affixed to a rotary shaft and a plurality of magnetic sensor elements and works to determine an angular position of the rotary shaft using outputs of the magnetic sensor elements. The apparatus also includes a malfunction detector which specifies which of the magnetic sensor elements is now malfunctioning and takes an action required to determine the angular position of the rotary shaft correctly in the event of such a malfunction.
    Type: Application
    Filed: August 26, 2004
    Publication date: March 3, 2005
    Inventors: Shigetoshi Fukaya, Yoko Ichikawa, Naoki Nakane
  • Escalator control box
    Patent number: D344384
    Type: Grant
    Filed: August 12, 1992
    Date of Patent: February 15, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Noboru Yamamoto, Shinji Shibuya, Akira Omachi, Yoko Ichikawa, Norio Kamoshita, Chuichi Saito