Patents by Inventor Yohei Jin

Yohei Jin 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).

  • Pressure adjustor and method of manufacturing the same, speaker device using the pressure adjustor, electronic device, and vehicle
    Patent number: 8767998
    Abstract: A pressure adjustor includes a sheet-like supporter formed of unwoven fabric or woven fabric, a plurality of activated carbon powder particles attached to the supporter, and binders binding the plurality of activated carbon powder particles to each other. If this pressure adjustor is disposed inside a cabinet of a speaker device including a speaker unit provided in the cabinet, a speaker device is obtained which has an excellent bass reproduction effect even if the device is made small.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: July 1, 2014
    Assignee: Panasonic Corporation
    Inventors: Keisuke Imamura, Yukihiro Shimasaki, Kiyoshi Ohashi, Yoshimichi Kajihara, Yohei Jin
  • LOUDSPEAKER RESIN MOLDING COMPONENT AND LOUDSPEAKER USING THE SAME AND ELECTRONIC DEVICE AND MOBILE APPARATUS USING THE LOUDSPEAKER
    Publication number: 20130301867
    Abstract: A loudspeaker resin molding component includes resin and bamboo fibers refined to have a microfibril status and carbonized. By this configuration, such a loudspeaker resin molding component can achieve both of a high elastic modulus and a large internal loss.
    Type: Application
    Filed: July 19, 2013
    Publication date: November 14, 2013
    Inventors: Yohei JIN, Yoshimichi KAJIHARA, Toru FUJII
  • SPEAKER COMPONENT, SPEAKER USING SAME, ELECTRONIC APPARATUS, AND MOVING MEANS
    Publication number: 20130039515
    Abstract: Provided is a speaker diaphragm or a speaker voice coil bobbin manufactured by a papermaking method and including metal hydroxide by at least an amount of 30 wt % or greater. With this, it is possible to improve rigidity and achieve favorable acoustic quality by an effect of mixing metal hydroxide. Moreover, it is possible to provide a paper-made diaphragm or a voice coil bobbin with flame retardancy without increasing weight or cost.
    Type: Application
    Filed: June 24, 2011
    Publication date: February 14, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Yohei Jin, Yoshimichi Kajihara
  • Diaphragm for speaker, speaker using the diaphragm, electronic device using the speaker, and speaker-mounted device
    Patent number: 8340342
    Abstract: A speaker diaphragm containing resin and carbonized bamboo material with a large degree of flexibility in setting physical properties, moisture-proof reliability and strength secured, superior appearance, and productivity and dimensional stability increased, which allows making characteristics and sound highly accurately, and designing with great originality.
    Type: Grant
    Filed: January 7, 2009
    Date of Patent: December 25, 2012
    Assignee: Panasonic Corporation
    Inventors: Yohei Jin, Yoshimichi Kajihara, Shinya Mizone, Kazuaki Nishimura
  • SPEAKER DIAPHRAGM, SPEAKER DUST CAP, SPEAKER FRAME, SPEAKER USING SAID PARTS, AND ELECTRONIC EQUIPMENT AND DEVICE USING SAID SPEAKER
    Publication number: 20120257781
    Abstract: Each of a speaker diaphragm, a dust cap, and a frame includes a resin and a plant opal that is extracted from a bamboo leaf, and is formed by injection molding or sheet molding. The configuration can enhance stiffness of each of the diaphragm, the dust cap, and the frame and implement high performance.
    Type: Application
    Filed: December 24, 2010
    Publication date: October 11, 2012
    Applicant: Panasonic Corporation
    Inventors: Yoshimichi Kajihara, Yohei Jin, Toru Fujii
  • SPEAKER DIAPHRAGM AND SPEAKER USING SAME, AND ELECTRONIC EQUIPMENT AND DEVICE USING SAID SPEAKER, AND SPEAKER DIAPHRAGM MANUFACTURING METHOD
    Publication number: 20120250930
    Abstract: A diaphragm is formed of paper manufactured from a first fiber material and a second fiber material. The first fiber material is beaten to have a given freeness, and the second fiber material is made by carbonizing bamboo fiber that has been fibrillated into a microfibril state. This structure allows the second fiber material to increase a rigidity of the diaphragm and also increase an internal loss, so that sound quality of the speaker that employs this diaphragm can be improved.
    Type: Application
    Filed: January 12, 2011
    Publication date: October 4, 2012
    Applicant: Panasonic Corporation
    Inventors: Yoshimichi Kajihara, Yohei Jin, Toru Fujii
  • PRESSURE ADJUSTOR AND METHOD OF MANUFACTURING THE SAME, SPEAKER DEVICE USING THE PRESSURE ADJUSTOR, ELECTRONIC DEVICE, AND VEHICLE
    Publication number: 20120027243
    Abstract: A pressure adjustor includes a sheet-like supporter formed of unwoven fabric or woven fabric, a plurality of activated carbon powder particles attached to the supporter, and binders binding the plurality of activated carbon powder particles to each other. If this pressure adjustor is disposed inside a cabinet of a speaker device including a speaker unit provided in the cabinet, a speaker device is obtained which has an excellent bass reproduction effect even if the device is made small.
    Type: Application
    Filed: February 19, 2010
    Publication date: February 2, 2012
    Applicant: Panasonic Corporation
    Inventors: Keisuke Imamura, Yukihiro Shimasaki, Kiyoshi Ohashi, Yoshimichi Kajihara, Yohei Jin
  • DIAPHRAGM FOR SPEAKER, SPEAKER USING THE DIAPHRAGM, ELECTRONIC DEVICE USING THE SPEAKER, AND SPEAKER-MOUNTED DEVICE
    Publication number: 20110164764
    Abstract: A speaker diaphragm containing resin and carbonized bamboo material with a large degree of flexibility in setting physical properties, moisture-proof reliability and strength secured, superior appearance, and productivity and dimensional stability increased, which allows making characteristics and sound highly accurately, and designing with great originality.
    Type: Application
    Filed: January 7, 2009
    Publication date: July 7, 2011
    Applicant: Panasonic Corporation
    Inventors: Yohei Jin, Yoshimichi Kajihara, Shinya Mizone, Kazuaki Nishimura
  • SPEAKER DIAPHRAGM, SPEAKER, AND METHOD FOR MANUFACTURING SPEAKER DIAPHRAGM
    Publication number: 20110007931
    Abstract: A speaker diaphragm of the present invention is molded by paper-making molding, using not smaller than 5 wt % of fibers extracted from at least bamboo leaves. It is thereby possible to improve the rigidity of the speaker diaphragm, so as to realize a speaker diaphragm with low environmental load, reducible cost and high sound quality.
    Type: Application
    Filed: July 23, 2009
    Publication date: January 13, 2011
    Inventors: Yohei Jin, Kazuyoshi Mimura, Shinya Mizone, Toru Fujii
  • SPEAKER DIAPHRAGM, SPEAKER, AND ELECTRONIC EQUIPMENT AND MOBILE DEVICE USING THE SPEAKER
    Publication number: 20110007922
    Abstract: A speaker diaphragm of the present invention is formed by mixing polylactic acid as a plant-derived resin, bamboo fibers and a natural binder. It is thereby possible to realize a speaker diaphragm capable of obtaining sufficient sound velocity, while having low environmental load and high sound quality.
    Type: Application
    Filed: July 6, 2009
    Publication date: January 13, 2011
    Applicant: PANASONIC CORPORATION
    Inventors: Yohei Jin, Yoshimichi Kajihara, Shinya Mizone