Patents by Inventor Masahiro Matsuyoshi

Masahiro Matsuyoshi 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).

  • Protective element
    Patent number: 7535332
    Abstract: A protective element has a heat-generating member and a low-melting metal member on a substrate, in which the low-melting metal member is blown out by the heat generated by the heat-generating member, wherein at least two strips of low-melting metal member are provided as the low-melting metal member, for example, between the pair of electrodes that pass current to the low-melting metal member, so that the lateral cross section of at least part of the low-melting metal member is substantially divided into at least two independent cross sections. This protective element has a shorter and more consistent operating time. It is preferable here to provide at least two strips of low-melting metal member between the pair of electrodes that pass current to the low-melting metal member. It is also preferable to provide one strip of low-melting metal member having a slit in its center, between the pair of electrodes that pass current to the low-melting metal member.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: May 19, 2009
    Assignee: Sony Chemicals Corporation
    Inventors: Yuji Furuuchi, Hisaya Tamura, Masahiro Matsuyoshi, Kazutaka Furuta, Masami Kawazu
  • Secondary battery devices
    Patent number: 7333315
    Abstract: A secondary battery device 1 including multiple protective circuits U1-U3 connected in parallel and each having two fuses fa, fb connected in series, wherein a terminal tc of each heater h is connected to a switch element 4 via rectifier element D1-D3. Even if a potential difference is generated between terminals tc, no residual current flows because any one of the rectifier elements D1-D3 is reverse-biased.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: February 19, 2008
    Assignees: Sony Chemical & Information Device Corporation, Sony Corporation
    Inventors: Masami Kawazu, Hisaya Tamura, Yuji Furuuchi, Masahiro Matsuyoshi, Kazutaka Furuta
  • Secondary battery devices
    Publication number: 20050221164
    Abstract: A secondary battery device 1 including multiple protective circuits U1-U3 connected in parallel and each having two fuses fa, fb connected in series, wherein a terminal tc of each heater h is connected to a switch element 4 via rectifier element D1-D3. Even if a potential difference is generated between terminals tc, no residual current flows because any one of the rectifier elements D1-D3 is reverse-biased.
    Type: Application
    Filed: May 31, 2005
    Publication date: October 6, 2005
    Applicant: SONY CHEMICALS CORP.
    Inventors: Masami Kawazu, Hisaya Tamura, Yuji Furuuchi, Masahiro Matsuyoshi, Kazutaka Furuta