Patents by Inventor Toshihisa Nagasawa

Toshihisa Nagasawa 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).

  • Patent number: 7443654
    Abstract: A surface-mounting thin type capacitor includes a capacitor element having a shape of and two end portions which form a side surface of the capacitor element. Two anode terminals are disposed on lower surfaces of the end portions along the side surface to form a mounting surface substantially perpendicular to the side surface. A cathode terminal is disposed at a middle part of the capacitor element to form the mounting surface together with the anode terminals. The cathode terminal is not between the anode terminals spatially and thereby manufacturing process of the capacitor is simplified and it is easy to change the intended use of the capacitor.
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: October 28, 2008
    Assignees: NEC TOKIN Corporation, NEC TOKIN Toyama, Ltd.
    Inventors: Tadamasa Asami, Toshihisa Nagasawa, Kenji Araki, Akihiro Kawai, Yuichi Maruko
  • Patent number: 7433175
    Abstract: In a solid electrolytic capacitor, a second dielectric layer made of an oxide of valve action metal is formed on first side, second side, and third side surfaces of an anode portion of an anode member. Between the second dielectric layer and a conductive polymer layer of the cathode layer, an electrical insulating resin layer is formed.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: October 7, 2008
    Assignee: NEC TOKIN Corporation
    Inventors: Tadamasa Asami, Toshihisa Nagasawa, Akihiro Kawai, Yuichi Maruko, Yuji Aoki
  • Patent number: 7326261
    Abstract: A surface-mount capacitor includes a multilayer capacitor structure formed by laminating plate-like capacitor elements each having anode lead portions at opposite ends thereof and a cathode portion at the center, an anode terminal connected to each anode lead portion via a strip-like plate, and a cathode terminal connected to the cathode portion. The anode and the cathode terminals and have a flat shape and are formed on a common plane as a substrate-mounted surface. A mold resin case has a bottom portion filling a gap between the anode and the cathode terminals and mechanically connecting the anode and the cathode terminals and sidewalls substantially perpendicular to the substrate-mounted surface. The anode and the cathode terminals have upper surfaces exposed on an inner bottom surface of the mold resin case to be connected to the anode lead portions and the cathode portion.
    Type: Grant
    Filed: March 1, 2007
    Date of Patent: February 5, 2008
    Assignees: NEC Tokin Corporation, NEC Tokin Toyama, Ltd.
    Inventors: Toshihisa Nagasawa, Kenji Araki, Hitoshi Takata, Akihiro Kawai, Shinji Arai
  • Publication number: 20070148900
    Abstract: A surface-mount capacitor includes a multilayer capacitor structure formed by laminating plate-like capacitor elements each having anode lead portions at opposite ends thereof and a cathode portion at the center, an anode terminal connected to each anode lead portion via a strip-like plate, and a cathode terminal connected to the cathode portion. The anode and the cathode terminals and have a flat shape and are formed on a common plane as a substrate-mounted surface. A mold resin case has a bottom portion filling a gap between the anode and the cathode terminals and mechanically connecting the anode and the cathode terminals and sidewalls substantially perpendicular to the substrate-mounted surface. The anode and the cathode terminals have upper surfaces exposed on an inner bottom surface of the mold resin case to be connected to the anode lead portions and the cathode portion.
    Type: Application
    Filed: March 1, 2007
    Publication date: June 28, 2007
    Applicants: NEC TOKIN Corporation, NEC TOKIN Toyama, Ltd.
    Inventors: Toshihisa NAGASAWA, Kenji Araki, Hitoshi Takata, Akihiro Kawai, Shinji Arai
  • Patent number: 7206193
    Abstract: A surface-mount capacitor includes a multilayer capacitor structure formed by laminating plate-like capacitor elements each having anode lead portions 11 at opposite ends thereof and a cathode portion 12 at the center, an anode terminal 18 connected to each anode lead portion 11 via a strip-like plate 14, and a cathode terminal 19 connected to the cathode portion 12. The anode and the cathode terminals 18 and 19 have a flat shape and are formed on a common plane as a substrate-mounted surface. A mold resin case 20 has a bottom portion filling a gap between the anode and the cathode terminals 18 and 19 and mechanically connecting the anode and the cathode terminals 18 and 19, and side walls substantially perpendicular to the substrate-mounted surface. The anode and the cathode terminals 18 and 19 have upper surfaces exposed on an inner bottom surface of the mold resin case 20 to be connected to the anode lead portions 11 and the cathode portion 12.
    Type: Grant
    Filed: October 27, 2005
    Date of Patent: April 17, 2007
    Assignees: NEC TOKIN Corporation, NEC TOKIN Toyama, Ltd.
    Inventors: Toshihisa Nagasawa, Kenji Araki, Hitoshi Takata, Akihiro Kawai, Shinji Arai
  • Publication number: 20070030629
    Abstract: In a solid electrolytic capacitor, a second dielectric layer made of an oxide of valve action metal is formed on first side, second side, and third side surfaces of an anode portion of an anode member. Between the second dielectric layer and a conductive polymer layer of the cathode layer, an electrical insulating resin layer is formed.
    Type: Application
    Filed: August 1, 2006
    Publication date: February 8, 2007
    Applicant: NEC TOKIN Corporation
    Inventors: Tadamasa Asami, Toshihisa Nagasawa, Akihiro Kawai, Yuichi Maruko, Yuji Aoki
  • Patent number: 7113390
    Abstract: In a surface-mount thin-profile capacitor including an aluminum foil as a base member composed of an aluminum core and a pair of etched layers covering opposite surfaces of the aluminum core, a resist resin is formed at a boundary between an anode as each of opposite end portions of the aluminum foil and a cathode formed at a center area of each of opposite surfaces of the aluminum foil. The resist resin separates and isolates the etched layer on the side of the anode and a conductive polymer layer from each other. If a part of the conductive polymer layer climbs up onto the resist resin, the climbing part of the conductive polymer layer is covered with an additional resist resin.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: September 26, 2006
    Assignees: NEC TOKIN Corporation, NEC TOKIN Toyama, Ltd.
    Inventors: Yuichi Maruko, Akihiro Kawai, Toshihisa Nagasawa, Tadamasa Asami
  • Publication number: 20060087795
    Abstract: A surface-mount capacitor includes a multilayer capacitor structure formed by laminating plate-like capacitor elements each having anode lead portions 11 at opposite ends thereof and a cathode portion 12 at the center, an anode terminal 18 connected to each anode lead portion 11 via a strip-like plate 14, and a cathode terminal 19 connected to the cathode portion 12. The anode and the cathode terminals 18 and 19 have a flat shape and are formed on a common plane as a substrate-mounted surface. A mold resin case 20 has a bottom portion filling a gap between the anode and the cathode terminals 18 and 19 and mechanically connecting the anode and the cathode terminals 18 and 19, and side walls substantially perpendicular to the substrate-mounted surface. The anode and the cathode terminals 18 and 19 have upper surfaces exposed on an inner bottom surface of the mold resin case 20 to be connected to the anode lead portions 11 and the cathode portion 12.
    Type: Application
    Filed: October 27, 2005
    Publication date: April 27, 2006
    Applicants: NEC TOKIN Corporation, NEC TOKIN Toyama, Ltd.
    Inventors: Toshihisa Nagasawa, Kenji Araki, Hitoshi Takata, Akihiro Kawai, Shinji Arai
  • Publication number: 20060044737
    Abstract: A surface-mounting thin type capacitor includes a capacitor element having a shape of and two end portions which form a side surface of the capacitor element. Two anode terminals are disposed on lower surfaces of the end portions along the side surface to form a mounting surface substantially perpendicular to the side surface. A cathode terminal is disposed at a middle part of the capacitor element to form the mounting surface together with the anode terminals. The cathode terminal is not between the anode terminals spatially and thereby manufacturing process of the capacitor is simplified and it is easy to change the intended use of the capacitor.
    Type: Application
    Filed: August 9, 2005
    Publication date: March 2, 2006
    Applicants: NEC TOKIN Corporation, NEC TOKIN Toyama, Ltd.
    Inventors: Tadamasa Asami, Toshihisa Nagasawa, Kenji Araki, Akihiro Kawai, Yuichi Maruko
  • Publication number: 20050162814
    Abstract: In a surface-mount thin-profile capacitor including an aluminum foil as a base member composed of an aluminum core and a pair of etched layers covering opposite surfaces of the aluminum core, a resist resin is formed at a boundary between an anode as each of opposite end portions of the aluminum foil and a cathode formed at a center area of each of opposite surfaces of the aluminum foil. The resist resin separates and isolates the etched layer on the side of the anode and a conductive polymer layer from each other. If a part of the conductive polymer layer climbs up onto the resist resin, the climbing part of the conductive polymer layer is covered with an additional resist resin.
    Type: Application
    Filed: January 18, 2005
    Publication date: July 28, 2005
    Applicants: NEC TOKIN Corporation, NEC TOKIN Toyama, Ltd.
    Inventors: Yuichi Maruko, Akihiro Kawai, Toshihisa Nagasawa, Tadamasa Asami
  • Patent number: 6920035
    Abstract: A thin-type surface-mount capacitor is a solid electrolytic capacitor. The capacitor includes a capacitor element having an anode body in the form of a plate-like or foil-like valve-action metal that is area-increased, and a conductive functional polymer film used as a solid electrolyte. The capacitor further includes thermal adhesive insulating resin impregnated tapes that are stuck to the capacitor element on upper and lower sides thereof, and an element reinforcing metal plate and a solderable cathode terminal metal plate 67 that are stuck to the tapes, respectively. The capacitor is finally formed by applying a curing treatment under high temperature and pressure. Each of the metal plates is applied with a stepping process that provides a difference in level corresponding to a predetermined thickness.
    Type: Grant
    Filed: July 13, 2004
    Date of Patent: July 19, 2005
    Assignees: Nec Tokin Corporation, Nec Tokin Toyama, Ltd.
    Inventors: Toshihisa Nagasawa, Akihiro Kawai, Yuichi Maruko
  • Patent number: 6882521
    Abstract: A chip-type capacitor includes a capacitor element, an encapsulation resin covering an entirety of the capacitor element, an anode terminal having a base portion whose bottom surface is exposed on a mounting surface of the encapsulation resin and a standing-up portion perpendicular to the base portion and having one end connected to the base portion and the other end welded to an anode lead wire led out from the capacitor element, and a cathode terminal fixed through a conductive adhesive to the capacitor element so as to expose a bottom surface on the mounting surface of the encapsulation resin. A depressed portion is formed on each of opposite side surfaces of the encapsulation resin, thereby partially exposing a top surface of each of the anode and the cathode terminals opposite to the bottom surface to form a terminal exposed portion exposed out of the encapsulation resin.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: April 19, 2005
    Assignees: NEC Tokin Corporation, NEC Tokin Toyama, Ltd.
    Inventors: Makoto Tsutsui, Toshihisa Nagasawa
  • Publication number: 20050013093
    Abstract: A thin-type surface-mount capacitor is a solid electrolytic capacitor. The capacitor includes a capacitor element having an anode body in the form of a plate-like or foil-like valve-action metal that is area-increased, and a conductive functional polymer film used as a solid electrolyte. The capacitor further includes thermal adhesive insulating resin impregnated tapes that are stuck to the capacitor element on upper and lower sides thereof, and an element reinforcing metal plate and a solderable cathode terminal metal plate 67 that are stuck to the tapes, respectively. The capacitor is finally formed by applying a curing treatment under high temperature and pressure. Each of the metal plates is applied with a stepping process that provides a difference in level corresponding to a predetermined thickness.
    Type: Application
    Filed: July 13, 2004
    Publication date: January 20, 2005
    Applicants: NEC TOKIN Corporation, NEC TOKIN Toyama, Ltd.
    Inventors: Toshihisa Nagasawa, Akihiro Kawai, Yuichi Maruko
  • Publication number: 20040160730
    Abstract: A chip-type capacitor includes a capacitor element, an encapsulation resin covering an entirety of the capacitor element, an anode terminal having a base portion whose bottom surface is exposed on a mounting surface of the encapsulation resin and a standing-up portion perpendicular to the base portion and having one end connected to the base portion and the other end welded to an anode lead wire led out from the capacitor element, and a cathode terminal fixed through a conductive adhesive to the capacitor element so as to expose a bottom surface on the mounting surface of the encapsulation resin. A depressed portion is formed on each of opposite side surfaces of the encapsulation resin, thereby partially exposing a top surface of each of the anode and the cathode terminals opposite to the bottom surface to form a terminal exposed portion exposed out of the encapsulation resin.
    Type: Application
    Filed: December 16, 2003
    Publication date: August 19, 2004
    Applicants: NEC TOKIN Corporation, NEC TOKIN Toyama, Ltd.
    Inventors: Makoto Tsutsui, Toshihisa Nagasawa
  • Patent number: 6392868
    Abstract: An electric double-layer capacitor has a pair of thrust plates for thrusting a stacked cell pair and a gasket for encapsulating the stacked cell pair together with the thrust plates. The thrust plate has slanted side surfaces for effecting a close contact with a packaging overcoat. The thrust plates and the mounting gasket are coupled together by an interdigitaion relationship.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: May 21, 2002
    Assignee: NEC Corporation
    Inventors: Masako Ohya, Kazuya Mimura, Yutaka Nakazawa, Satoshi Abe, Satoshi Arai, Takashi Yasuda, Toshihisa Nagasawa, Koji Sakata, Mitsuru Ogawa
  • Publication number: 20010021097
    Abstract: An electric double-layer capacitor has a pair of thrust plates for thrusting a stacked cell pair and a gasket for encapsulating the stacked cell pair together with the thrust plates. The thrust plate has slanted side surfaces for effecting a close contact with a packaging overcoat. The thrust plates and the mounting gasket are coupled together by an interdigitaion relationship.
    Type: Application
    Filed: February 26, 2001
    Publication date: September 13, 2001
    Inventors: Masako Ohya, Kazuya Mimura, Yutaka Nakazawa, Satoshi Abe, Satoshi Arai, Takashi Yasuda, Toshihisa Nagasawa, Koji Sakata, Mitsuru Ogawa
  • Patent number: D587198
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: February 24, 2009
    Assignee: NEC TOKIN Corporation
    Inventor: Toshihisa Nagasawa
  • Patent number: D587199
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: February 24, 2009
    Assignee: NEC TOKIN Corporation
    Inventor: Toshihisa Nagasawa