Patents by Inventor Ryuji Imazu

Ryuji Imazu 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).

  • Road traffic weather-monitoring system and self-luminous road sign system
    Patent number: 7095337
    Abstract: A self-luminous road sign system comprises a plurality of sensor units 1 . . . 1 each of which is equipped at least with a visibility meter and an illuminance meter, or which may be equipped with an anemovane and a thermometer as well as the visibility meter and the illuminance meter; and an information processing and management department 2 for centralized management of weather information detected by the plural sensor units in order to predict any danger in the road observation area, wherein the output information from the information processing and management department 2 is displayed on road installations 4 . . . 4 connected via a network. Based on the road background brightness obtained by the illuminance meter in the sensor unit, the optimum luminous brightness which provides a predetermined contrast is calculated.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: August 22, 2006
    Assignee: Sekisui Jushi Kabushiki Kaisha
    Inventors: Terumasa Sudou, Youichirou Hishigaki, Shigeki Kondou, Motonori Ogata, Ryuji Imazu, Masaya Yuasa
  • Road traffic weather-monitoring system and self-luminous road sign system
    Publication number: 20050001739
    Abstract: A self-luminous road sign system comprises a plurality of sensor units 1 . . . 1 each of which is equipped at least with a visibility meter and an illuminance meter, or which may be equipped with an anemovane and a thermometer as well as the visibility meter and the illuminance meter; and an information processing and management department 2 for centralized management of weather information detected by the plural sensor units in order to predict any danger in the road observation area, wherein the output information from the information processing and management department 2 is displayed on road installations 4 . . . 4 connected via a network. Based on the road background brightness obtained by the illuminance meter in the sensor unit, the optimum luminous brightness which provides a predetermined contrast is calculated.
    Type: Application
    Filed: July 16, 2004
    Publication date: January 6, 2005
    Inventors: Terumasa Sudou, Youichirou Hishigaki, Shigeki Kondou, Motonori Ogata, Ryuji Imazu, Masaya Yuasa
  • Road traffic weather observation system and self-emission road sign system
    Patent number: 6812855
    Abstract: A self-luminous road sign system comprises a plurality of sensor units 1 . . . 1 each of which is equipped at least with a visibility meter and an illuminance meter, or which may be equipped with an anemovane and a thermometer as well as the visibility meter and the illuminance meter; and an information processing and management department 2 for centralized management of weather information detected by the plural sensor units in order to predict any danger in the road observation area, wherein the output information from the information processing and management department 2 is displayed on road installations 4 . . . 4 connected via a network. Based on the road background brightness obtained by the illuminance meter in the sensor unit, the optimum luminous brightness which provides a predetermined contrast is calculated.
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: November 2, 2004
    Assignee: Sekisui Jushi Kabushiki Kaisha
    Inventors: Terumasa Sudou, Youichirou Hishigaki, Shigeki Kondou, Motonori Ogata, Ryuji Imazu, Masaya Yuasa