Patents by Inventor Yoshiharu Ao

Yoshiharu Ao 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).

  • Portable gas alarm device
    Patent number: 6744373
    Abstract: Disclosed is a portable gas alarm device easy to be fabricated as a small-sized one handy to carry and high in convenience for use. The portable gas alarm device comprises a gas alarm device body having a casing flat in whole and a fitting member provided on the casing to fit it to the human body. The gas alarm device body has a control circuit board extending to the direction of the flat plane of the casing, a display mechanism is arranged in a central area on the front surface side of the control circuit board, a gas sensor and an alarm buzzer are arranged on the right and left sides of the display mechanism, and a battery fitting chamber is provided on the back surface side of the circuit board. A vibration generator for alarm may be provided in the gas alarm device body. The fitting member may be one suitable for use in fitting the gas alarm device body to a person's wrist or a person's wear.
    Type: Grant
    Filed: March 25, 2002
    Date of Patent: June 1, 2004
    Assignee: Riken Keiki Co., Ltd.
    Inventors: Junichi Koyano, Shuji Tajima, Yoshiharu Ao, Masahide Kitamura
  • Portable gas alarm device
    Publication number: 20030052792
    Abstract: Disclosed is a portable gas alarm device easy to be fabricated as a small-sized one handy to carry and high in convenience for use. The portable gas alarm device comprises a gas alarm device body having a casing flat in whole and a fitting member provided on the casing to fit it to the human body. The gas alarm device body has a control circuit board extending to the direction of the flat plane of the casing, a display mechanism is arranged in a central area on the front surface side of the control circuit board, a gas sensor and an alarm buzzer are arranged on the right and left sides of the display mechanism, and a battery fitting chamber is provided on the back surface side of the circuit board. A vibration generator for alarm may be provided in the gas alarm device body. The fitting member may be one suitable for use in fitting the gas alarm device body to a person's wrist or a person's wear.
    Type: Application
    Filed: March 25, 2002
    Publication date: March 20, 2003
    Applicant: Riken Keiki Co., Ltd.
    Inventors: Junichi Koyano, Shuji Tajima, Yoshiharu Ao, Masahide Kitamura