Patents by Inventor Akira Yokoo

Akira Yokoo 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).

  • Oxygen sensor layout
    Patent number: 5271477
    Abstract: A motorcycle having an exhaust system with a sensor in the exhaust system for engine control. The sensor is located so that it will be protected by the exhaust device into which it protrudes and by other portions of the motorcycle. The exhaust system includes a plurality of exhaust pipes and the exhaust device and one of these exhaust pipes is readily removable from a unitary assembly comprised of the remaining exhaust pipes and exhaust device so that an adjacent component of the motorcycle can be easily serviced.
    Type: Grant
    Filed: February 12, 1992
    Date of Patent: December 21, 1993
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Ryoichi Gekka, Masaki Takegami, Tomokazu Ito, Akira Yokoo