Patents by Inventor Setsuko Tadokoro

Setsuko Tadokoro 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).

  • Solder paste
    Patent number: 6926849
    Abstract: A solder paste comprising a powder of a Zn-containing Sn-based, lead-free solder mixed with an activator-containing rosin-based flux to which 0.5-10.0 wt % of isocyanuric acid or a haloalkyl ester thereof is added can prevent the formation of solder balls and voids during reflow soldering and exhibit good solderability. A solder paste comprising a powder of an Ag- or Zn-containing Sn-based, lead-free solder mixed with an activator-containing rosin-based flux to which 0.01-10.0 wt % of a salicylamide compound also does not exhibit a change in viscosity and exhibits good solderability.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: August 9, 2005
    Assignees: Senju Metal Industry Co., Ltd., Matsushita Electric Industrial Co., Ltd.
    Inventors: Toshihiko Taguchi, Kunihito Takaura, Setsuko Tadokoro, Masahiko Hirata, Hisahiko Yoshida, Takashi Nagashima
  • Solder pastes
    Publication number: 20040069974
    Abstract: A solder paste comprising a powder of a Zn-containing Sn-based, lead-free solder mixed with an activator-containing rosin-based flux to which 0.5-10.0 wt % of isocyanuric acid or a haloalkyl ester thereof is added can prevent the formation of solder balls and voids during reflow soldering and exhibit good solderability. A solder paste comprising a powder of an Ag- or Zn-containing Sn-based, lead-free solder mixed with an activator-containing rosin-based flux to which 0.01-10.0 wt % of a salicylamide compound also does not exhibit a change in viscosity and exhibits good solderability.
    Type: Application
    Filed: November 3, 2003
    Publication date: April 15, 2004
    Inventors: Toshihiko Taguchi, Kunihito Takaura, Setsuko Tadokoro, Masahiko Hirata, Hisahiko Yoshida, Takashi Nagashima