Patents by Inventor Yutaka Mae

Yutaka Mae 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).

  • Informing apparatus for mobile communication apparatus
    Patent number: 6741721
    Abstract: An informing apparatus for a mobile communication apparatus has two magnetic gaps A, B formed in a magnetic circuit, in which voice coils are set respectively. A first vibrant part includes one voice coil connected to a diaphragm, and a second vibrant part includes another voice coil connected, via supporters, to a casing set outside the magnetic circuit, the supporters and the magnetic circuit. A sound receiving function and/or a call-tone receiving function, which is performed with a sound signal and/or a call-tone signal sent to the voice coil 8 in the first vibrant part, and a silent mode call-reception informing function, which is performed with a call-reception signal sent to the voice coil in the second vibrant part whereby the supporters and the magnetic circuit are vibrated thereby making the mobile communication apparatus itself resonate, work independently.
    Type: Grant
    Filed: February 22, 2001
    Date of Patent: May 25, 2004
    Assignee: Minebea Co., Ltd.
    Inventors: Toshifumi Fukawatase, Kenichi Ooki, Yutaka Mae
  • Informing apparatus for mobile communication apparatus
    Publication number: 20020114486
    Abstract: An informing apparatus for a mobile communication apparatus is provided, which can be used in a silent mode without a limitation in resonance frequency.
    Type: Application
    Filed: February 22, 2001
    Publication date: August 22, 2002
    Applicant: Minebea Co., Ltd.
    Inventors: Toshifumi Fukawatase, Kenichi Ooki, Yutaka Mae
  • Speaker cone plate and method of forming
    Patent number: 4996119
    Abstract: A speaker cone plate is provided with an inorganic surfacial hard layer formed at least on a face of a metal substrate and is subjected to a reinforcing treatment by hot isostatic pressing, wherein the surfacial hard layer may be composed of a carbide, an oxide, a borie or a phosphide or may be formed by plasma thermal spraying of an inorganic substance containing silicon nitride whiskers or silicon carbide whiskers.
    Type: Grant
    Filed: March 17, 1989
    Date of Patent: February 26, 1991
    Assignee: Kabushiki Kaisha Kenwood
    Inventors: Yutaka Mae, Yoichi Yaguchi, Masakatsu Sakamoto
  • Speaker system
    Patent number: 4146111
    Abstract: A speaker system comprising a speaker cabinet having a forward baffle plate, two side plates and a rear plate, a passive diaphragm, a speaker mounted in the baffle plate of the speaker cabinet, an opening disposed in the baffle plate next to the speaker as an outlet for the sound radiated from the passive diaphragm, a dividing plate slantedly disposed between the baffle plate and the rear plate of the speaker cabinet, the dividing plate dividing the speaker cabinet into a first part including the speaker and a second part including the opening, the passive diaphragm being mounted in the dividing plate.
    Type: Grant
    Filed: January 12, 1977
    Date of Patent: March 27, 1979
    Assignee: Trio Kabushiki Kaisha
    Inventors: Yutaka Mae, Shiro Iwakura, Sigeyuki Koga, Hideki Ogawa, Hideaki Kanda