Patents by Inventor Junsuke Hotani

Junsuke Hotani 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).

  • Voice coil of speaker
    Patent number: 7050601
    Abstract: A speaker is provided in which a coil wire can withstand a large amplitude motion caused by vibration of a voice coil bobbin and a diaphragm, and in which a bias of weight of the voice coil bobbin and the diaphragm caused by a constitution of the coil wire is reduced to a minimum. The coil wire, winding around the voice coil bobbin, is composed of a core thread having a bending strength and a heat-resistance and is wound by a conductive material. An end of the coil wire is directly connected to an external input terminal attached to a frame.
    Type: Grant
    Filed: July 16, 2003
    Date of Patent: May 23, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takashi Suzuki, Shinya Mizone, Tsuneaki Rikiishi, Junsuke Hotani
  • Voice coil of speaker
    Publication number: 20040197006
    Abstract: The invention provides a speaker, in which a coil wire withstands a large amplitude motion caused by vibration of a voice coil bobbin and a diaphragm, and in which a bias of weight of the voice coil bobbin and the diaphragm caused by a constitution of the coil wire is reduced to a minimum, therewith a speaker is provided with reliability and a superior sound quality. The coil wire, winding around the voice coil bobbin (80), is composed of a core thread having a bending strength and a heat-resistance and is wound by a conductive material. An end of the coil wire is directly connected to an external input terminal (90) attached to a frame (50).
    Type: Application
    Filed: March 25, 2004
    Publication date: October 7, 2004
    Inventors: Takashi Suzuki, Shinya Mizone, Tsuneaki Rikiishi, Junsuke Hotani