Patents by Inventor Shuichi Wakaki

Shuichi Wakaki 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).

  • Publication number: 20200154016
    Abstract: A flexible wiring circuit board includes a first insulating layer, a wire disposed at one side in a thickness direction of the first insulating layer, a second insulating layer disposed at one side in the thickness direction of the wire, a shield layer disposed at one side in the thickness direction of the second insulating layer, and a third insulating layer disposed at one side in the thickness direction of the shield layer. The shield layer includes an electrically conductive layer and two barrier layers sandwiching the electrically conductive layer therebetween in the thickness direction. The electrically conductive layer is selected from a metal belonging to a group 11, and the fourth period and the fifth period in the periodic table, and the barrier layer is selected from a metal belonging to groups 4 to 10, and the fourth to the sixth periods in the periodic table.
    Type: Application
    Filed: April 25, 2018
    Publication date: May 14, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Hayato TAKAKURA, Yoshihiro KAWAMURA, Shuichi WAKAKI, Shusaku SHIBATA
  • Publication number: 20200105656
    Abstract: An imaging element mounting board for mounting an imaging element has a wire region including a first insulating layer, a metal wire disposed at one side in a thickness direction of the first insulating layer, and a second insulating layer disposed at one side in the thickness direction of the metal wire. An equivalent elastic modulus of the wire region is 5 GPa or more and 55 GPa or less.
    Type: Application
    Filed: April 4, 2018
    Publication date: April 2, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Shusaku SHIBATA, Yoshihiro KAWAMURA, Hayato TAKAKURA, Takahiro TAKANO, Shuichi WAKAKI
  • Publication number: 20200077520
    Abstract: A mounted board includes a base insulating layer, a conductive pattern, and a cover insulating layer sequentially toward one side in a thickness direction. The entire lower surface of the base insulating layer is exposed downwardly. A total thickness of the base insulating layer and the cover insulating layer is 16 ?m or less. The base insulating layer contains an insulating material having a hygroscopic expansion coefficient of 15×10?6/% RH or less.
    Type: Application
    Filed: April 25, 2018
    Publication date: March 5, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Shusaku SHIBATA, Hayato TAKAKURA, Yoshihiro KAWAMURA, Shuichi WAKAKI
  • Publication number: 20200075474
    Abstract: A wiring circuit board includes a first insulating layer, a terminal, a second insulating layer disposed at one side in a thickness direction of the terminal, and a wire continuous to the terminal in a direction crossing the thickness direction. The first insulating layer has an opening portion passing through the first insulating layer in the thickness direction and having the opening cross-sectional area increasing as being closer to one side in the thickness direction. The terminal has a peripheral end portion and a solid portion. The peripheral end portion contacts with an inner side surface of the first insulating layer. The inner side surface forms the opening portion. The solid portion integrally disposed with the peripheral end portion at the inner side of the peripheral end portion. The peripheral end portion and the solid portion fill the entire opening portion.
    Type: Application
    Filed: April 23, 2018
    Publication date: March 5, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Hayato TAKAKURA, Shuichi WAKAKI, Shusaku SHIBATA, Yoshihiro KAWAMURA, Masaki ITO
  • Patent number: 8173909
    Abstract: Inspection windows are cut or formed into the tail section of the flexure circuit tail in a hard disk drive Head Gimbal Assembly (HGA), or CIS, to enable visual inspection of the alignment of the CIS to the head preamp circuit, or FPC. The holes are made in the steel backing and base polyimide, and are positioned between adjacent conductive pads. In addition to facilitating visual inspection, the windows also enable rework of solder. Additionally, solder wicking holes may also be provided in the conductive pads and/or the polyimide and steel backing.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: May 8, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Alex Enriquez Cayaban, Vladimir Aleksic, Shuichi Wakaki
  • Patent number: 7466519
    Abstract: A wired circuit board is provided for controlling characteristic impedance at connection points between the read wire and write wire of a suspension board with circuit and terminal portions of the wired circuit board connected thereto. The invention provides improved signal transmission efficiency for fine pitch wiring or for high frequency signal. A conductive board is adhesively bonded to an insulating base layer of the wired circuit board at one side thereof opposite to the other side on which a suspension-board-side connection terminal portion is formed having a first terminal portion that connects with a read wire of the suspension board and a second terminal portion that connects with a write wire of the suspension board. An opening is provided adjacent to one of the first terminal portion and the second terminal portion and a stiffener board is adhesively bonded to the conductive board via an adhesive layer.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: December 16, 2008
    Assignee: Nitto Denko Corporation
    Inventors: Shuichi Wakaki, Tadao Ohkawa, Yasuhito Ohwaki
  • Publication number: 20080099236
    Abstract: Inspection windows are cut or formed into the tail section of the flexure circuit tail in a hard disk drive Head Gimbal Assembly (HGA), or CIS, to enable visual inspection of the alignment of the CIS to the head preamp circuit, or FPC. The holes are made in the steel backing and base polyimide, and are positioned between adjacent conductive pads. In addition to facilitating visual inspection, the windows also enable rework of solder. Additionally, solder wicking holes may also be provided in the conductive pads and/or the polyimide and steel backing.
    Type: Application
    Filed: October 19, 2007
    Publication date: May 1, 2008
    Inventors: Alex Enriquez Cayaban, Vladimir Aleksic, Shuichi Wakaki
  • Publication number: 20040246626
    Abstract: A wired circuit board that can control characteristic impedance at connection points between the read wire and write wire of a suspension board with circuit and terminal portions of the wired circuit board connected thereto with a simple structure, to improve signal transmission efficiency for fine pitch wiring or for high frequency signal. A conductive board 25 is adhesively bonded to an insulating base layer 18 of the wired circuit board 1 at one side thereof opposite to the other side on which a suspension-board-side connection terminal portion 11 having a first terminal portion 13 to connect with a read wire 6R of a suspension board with circuit 3 and a second terminal portion 14 to connect with a write wire 6W of the suspension board with circuit 3 is formed, in such a relation that an opening 27 can correspond in position to either of the first terminal portion 13 and the second terminal portion 14, and a stiffener board 24 is adhesively bonded to the conductive board 25 via an adhesive layer 28.
    Type: Application
    Filed: June 3, 2004
    Publication date: December 9, 2004
    Inventors: Shuichi Wakaki, Tadao Ohkawa, Yasuhito Ohwaki