Patents by Inventor Takao Shiga

Takao Shiga 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).

  • Engine acoustical system
    Patent number: 6732509
    Abstract: A number of embodiments of acoustical devices for improving either or both the intake and exhaust sounds emanated from an internal combustion engine. This is achieved by employing acoustical devices which are configured so as to discharge the desired sound waves to the atmosphere rather than by attempting to dampen the undesired sound waves generated in the system.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: May 11, 2004
    Assignee: Yamaha Kabushiki Kaisha
    Inventor: Takao Shiga
  • Engine acoustical system
    Publication number: 20030066288
    Abstract: A number of embodiments of acoustical devices for improving either or both the intake and exhaust sounds emanated from an internal combustion engine. This is achieved by employing acoustical devices which are configured so as to discharge the desired sound waves to the atmosphere rather than by attempting to dampen the undesired sound waves generated in the system.
    Type: Application
    Filed: October 2, 2002
    Publication date: April 10, 2003
    Inventor: Takao Shiga