Patents by Inventor Masahiro Iwakami

Masahiro Iwakami 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).

  • EARPHONE CONNECTION CABLE AND PORTABLE DEVICE PROVIDED WITH THE SAME
    Publication number: 20090052720
    Abstract: An earphone connection cable and a portable device for suppressing sound signal superposing between an R earphone and an L earphone or between an earphone and a microphone are provided. A connection cable includes an R earphone 116a and an L earphone 116b at tips and contains an antenna element 115, a ground potential line 114, an R sound signal line 108a, an L sound signal line 108b, an inductance 111, and a second inductance group, and the ground potential line of the R earphone 116a and the L earphone 116b is connected to the antenna element 115, thereby suppressing sound signal superposing between the R earphone and the L earphone.
    Type: Application
    Filed: February 14, 2007
    Publication date: February 26, 2009
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Daisuke Nishi, Kenya Nagano, Masanori Oshimi, Masahiro Iwakami, Yousuke Matuda