Patents by Inventor Masumi Kawatsu

Masumi Kawatsu 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).

  • Subframe induction noise reduction side-branch reactive silencer
    Patent number: 5096010
    Abstract: A noise reduction side-branch reactive silencer for use with the air induction system of an internal combustion engine. The side-branch reactive silencer is contained within a subframe interposed between the engine and a vehicle body. The subframe is a rigid structure and forms a reactive cavity therein. The subframe has a connector for communicating the reactive cavity with the air induction system of the vehicle. The connector is positioned along the subframe in accordance with the desired attenuation frequency.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: March 17, 1992
    Assignee: Ford Motor Company
    Inventors: William K. Ojala, Philip R. Guys, Masumi Kawatsu, John D. Kostun