Patents by Inventor Takeshi Tokusyo

Takeshi Tokusyo 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).

  • Loudspeaker
    Patent number: 5225639
    Abstract: A loudspeaker has a magnetic circuit and a speaker frame attached to the magnetic circuit, which is mounted on a rear tray of an automobile. A grille is attached to the speaker frame so as to reflect sound generated from the magnetic circuit. The grille has a slit so as to radiate the sound in a forward horizontal direction.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: July 6, 1993
    Assignee: Pioneer Electronic Corporation
    Inventors: Hiroyuki Kobayashi, Takeshi Tokusyo, Tomiaki Ando