Patents by Inventor Ichiro Mutoh

Ichiro Mutoh 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).

  • Variable attenuator
    Patent number: 4225843
    Abstract: A variable attenuator comprises a generally horseshoe-shaped main resistance element, a sliding member movable thereover, and a bypass provided around that portion of the main resistance element adjacent the end portion of the path of said sliding member. The bypass is made of a conductive element or conductive element and a resistance element, the amount of current flowing through said bypass being thereby increased to enable a maximum attenuation.
    Type: Grant
    Filed: June 29, 1978
    Date of Patent: September 30, 1980
    Assignee: Alps Electric Co., Ltd.
    Inventors: Moritoshi Nakamura, Ichiro Mutoh, Tetsuhiro Kiyono