Patents by Inventor Kohji Tabata

Kohji Tabata 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).

  • Antenna structure for vehicles
    Patent number: 6825812
    Abstract: An antenna structure for vehicles capable of minimizing the distance between a first contact member and a signal processing circuit and ensuring stable antenna performance without using a connection line of a lengthy wire rod is provided. To realize this advantage, an antenna element is disposed on a rear window glass, and the first contact member is disposed at an end of the antenna element. Further, an amplifier case having an attachment flange facing the rear window glass is fixed to a roof panel, and the signal processing circuit is disposed in the amplifier case at a position sandwiching the attachment flange.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: November 30, 2004
    Assignees: Kojima Press Industry Co., LTD, Toyota Jidosha Kabushiki Kaisha, Asahi Glass Company, Limited, Nippon Sheet Glass Company, Fujitsu Ten Limited
    Inventors: Makoto Yokota, Minoru Yonebayashi, Hideaki Tanaka, Junzo Ooe, Kansei Mizutani, Kohji Tabata, Hidetoshi Oka, Naoki Kushima
  • Antenna structure for vehicles
    Publication number: 20030227413
    Abstract: An antenna structure for vehicles capable of minimizing the distance between a first contact member and a signal processing circuit and ensuring stable antenna performance without using a connection line of a lengthy wire rod is provided. To realize this advantage, an antenna element is disposed on a rear window glass, and the first contact member is disposed at an end of the antenna element. Further, an amplifier case having an attachment flange facing the rear window glass is fixed to a roof panel, and the signal processing circuit is disposed in the amplifier case at a position sandwiching the attachment flange.
    Type: Application
    Filed: May 29, 2003
    Publication date: December 11, 2003
    Applicants: Kojima Press Industry Co., Ltd., Toyota Jidosha Kabushiki Kaisha, Asahi Glass Company, Limited, Nippon Sheet Glass Company, Limited, Fujitsu Ten Limited
    Inventors: Makoto Yokota, Minoru Yonebayashi, Hideaki Tanaka, Junzo Ooe, Kansei Mizutani, Kohji Tabata, Hidetoshi Oka, Naoki Kushima
  • Glass antenna for an automobile
    Patent number: 6504512
    Abstract: A glass antenna for an automobile that can improve sensitivity in an FM broadcast band and a frequency band region higher than the FM broadcast band, in which a defogger 3 and an antenna conductor 4 are provided in a rear window glass sheet 1. A vertical portion of the antenna conductor 4 crosses or overlaps a plurality of heater strips 2, and the antenna conductor 4 and the heater strips 2 are laid one upon another by interposing an insulation layer 15 in the crossing or overlapping portion.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: January 7, 2003
    Assignee: Asahi Glass Company, Limited
    Inventor: Kohji Tabata
  • Glass antenna for an automobile
    Publication number: 20010054982
    Abstract: A glass antenna for an automobile which can improve sensitivity in an FM broadcast band and a frequency band region higher than the FM broadcast band, wherein a defogger 3 and an antenna conductor 4 are provided in a rear window glass sheet 1; a vertical portion of the antenna conductor 4 crosses or overlaps a plurality of heater strips 2, and the antenna conductor 4 and the heater strips 2 are laid one upon another by interposing an insulation layer 15 in the crossing or overlapping portion.
    Type: Application
    Filed: June 21, 2001
    Publication date: December 27, 2001
    Applicant: Asahi Glass Company, Limited
    Inventor: Kohji Tabata
  • Glass antenna device for an automobile
    Patent number: 6243043
    Abstract: A first resonance is generated by the inductance of a first coil connected between a first antenna conductor in a window glass sheet and a receiver and the impedance of the antenna conductor, and a second resonance is generated by the inductance of a second coil connected between a second antenna conductor 3b and an automobile body as the earth. The antenna conductor and the antenna conductor are in a capacitive coupling relation, whereby signals in different broadcast band: a low frequency band and a high frequency band, are well received.
    Type: Grant
    Filed: June 5, 2000
    Date of Patent: June 5, 2001
    Assignee: Asahi Glass Company Ltd.
    Inventors: Fumitaka Terashima, Kohji Tabata, Tsuyoshi Yamamoto
  • Glass antenna device for an automobile
    Patent number: 6072435
    Abstract: A first resonance is generated by the inductance of a first coil connected between a first antenna conductor in a window glass sheet and a receiver and the impedance of the antenna conductor, and a second resonance is generated by the inductance of a second coil connected between a second antenna conductor and an automobile body as the earth. The antenna conductor and the antenna conductor are in a capacitive coupling relation, whereby signals in different broadcast band: a low frequency band and a high frequency band, are well received.
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: June 6, 2000
    Assignee: Asahi Glass Company Ltd.
    Inventors: Fumitaka Terashima, Kohji Tabata, Tsuyoshi Yamamoto