Patents by Inventor Kiyotaka Tsukada

Kiyotaka Tsukada 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: 11925180
    Abstract: In an antimicrobial substrate, a cured material of a binder containing a copper compound and a polymerization initiator is fixed onto a surface of a base material. At least a part of the copper compound is exposed on a surface of the cured material of the binder.
    Type: Grant
    Filed: November 1, 2022
    Date of Patent: March 12, 2024
    Assignee: IBIDEN CO., LTD.
    Inventors: Katsutoshi Horino, Kozo Takada, Kazuhiro Ito, Kohei Otsuka, Kiyotaka Tsukada
  • Publication number: 20230064901
    Abstract: In an antimicrobial substrate, a cured material of a binder containing a copper compound and a polymerization initiator is fixed onto a surface of a base material. At least a part of the copper compound is exposed on a surface of the cured material of the binder.
    Type: Application
    Filed: November 1, 2022
    Publication date: March 2, 2023
    Applicant: IBIDEN CO., LTD.
    Inventors: Katsutoshi HORINO, Kozo TAKADA, Kazuhiro ITO, Kohei OTSUKA, Kiyotaka TSUKADA
  • Patent number: 11517020
    Abstract: The present invention provides an antiviral substrate that is excellent in antiviral properties, is excellent in transparency or the like, and is capable of maintaining characteristics such as the transparency of a base material and the color of the surface of the base material. The present invention relates to an antiviral substrate in which a cured material of an electromagnetic curable resin containing a copper compound is scattered in the form of islands on a surface of a base material, and at least a part of the copper compound is exposed on a surface of the cured material of the electromagnetic curable resin.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: December 6, 2022
    Assignee: IBIDEN CO., LTD.
    Inventors: Katsutoshi Horino, Kozo Takada, Kazuhiro Ito, Kohei Otsuka, Kiyotaka Tsukada
  • Publication number: 20200236946
    Abstract: The present invention provides an antiviral substrate that is excellent in antiviral properties, is excellent in transparency or the like, and is capable of maintaining characteristics such as the transparency of a base material and the color of the surface of the base material. The present invention relates to an antiviral substrate in which a cured material of an electromagnetic curable resin containing a copper compound is scattered in the form of islands on a surface of a base material, and at least a part of the copper compound is exposed on a surface of the cured material of the electromagnetic curable resin.
    Type: Application
    Filed: April 10, 2020
    Publication date: July 30, 2020
    Applicant: IBIDEN CO., LTD.
    Inventors: Katsutoshi HORINO, Kozo TAKADA, Kazuhiro ITO, Kohei OTSUKA, Kiyotaka TSUKADA
  • Patent number: 10319892
    Abstract: A light-emitting element mounting substrate includes a substrate including insulating resin, a first conductor layer formed on a first surface of the substrate and having an element mounting portion, a second conductor layer formed on a second surface of the substrate on the opposite side of the first surface, metal blocks formed such that the metal blocks are penetrating through the first conductor layer, the substrate and the second conductor layer and positioned in the element mounting portion of the first conductor layer, and through-hole conductors formed adjacent to the metal blocks respectively such that the through-hole conductors electrically connect the first conductor layer and the second conductor layer and that a diameter of each metal block is larger than a diameter of each through-hole conductor.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: June 11, 2019
    Assignee: IBIDEN CO., LTD.
    Inventors: Takahisa Hirasawa, Kiyotaka Tsukada
  • Publication number: 20180233644
    Abstract: A light-emitting element mounting substrate includes a substrate including insulating resin, a first conductor layer formed on a first surface of the substrate and having an element mounting portion, a second conductor layer formed on a second surface of the substrate on the opposite side of the first surface, metal blocks formed such that the metal blocks are penetrating through the first conductor layer, the substrate and the second conductor layer and positioned in the element mounting portion of the first conductor layer, and through-hole conductors formed adjacent to the metal blocks respectively such that the through-hole conductors electrically connect the first conductor layer and the second conductor layer and that a diameter of each metal block is larger than a diameter of each through-hole conductor.
    Type: Application
    Filed: February 12, 2018
    Publication date: August 16, 2018
    Applicant: IBIDEN CO., LTD.
    Inventors: Takahisa Hirasawa, Kiyotaka Tsukada
  • Publication number: 20170374742
    Abstract: A composite wiring board includes a first wiring board including a first insulating layer, a first conductor layer formed on the first insulating layer, and metal elements penetrating the first insulating layer and the first conductor layer such that the metal elements are electrically connected to each other by the first conductor layer, and a second wiring board including a second insulating layer and a second conductor layer forming on the second insulating layer and including metal connection terminals such that the metal connection terminals are corresponding to and directly bonded to the metal elements of the first wiring board, respectively.
    Type: Application
    Filed: June 22, 2017
    Publication date: December 28, 2017
    Applicant: IBIDEN CO., LTD.
    Inventors: Takahisa HIRASAWA, Takayuki FURUNO, Kiyotaka TSUKADA
  • Patent number: 9781840
    Abstract: A substrate for mounting an electronic component includes a base material including insulating resin, a first conductor layer formed on first surface of the material, a second conductor layer formed on second surface of the material, and a metal block inserted into a hole penetrating through the first conductor, material and second conductor such that the metal block is fitted in the hole. The material has a bent portion in contact with the metal block in the hole such that the bent portion is bending toward the second conductor, the metal block has surface on first conductor side such that the surface has an outer peripheral portion having a curved-surface shape, and the hole has a first fitting inlet on the first conductor layer side and a second fitting inlet on second conductor side and that the metal block is positioned in contact with the second fitting inlet.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: October 3, 2017
    Assignee: IBIDEN CO., LTD.
    Inventors: Naoyuki Nagaya, Kiyotaka Tsukada
  • Publication number: 20170223816
    Abstract: A flexible printed wiring board includes a flexible insulating layer, a conductor layer formed on a surface of the flexible insulating layer, and a metal block including a welding base material and positioned such that the metal block is penetrating through the flexible insulating layer and the conductor layer.
    Type: Application
    Filed: February 1, 2017
    Publication date: August 3, 2017
    Applicant: IBIDEN CO., LTD.
    Inventors: Takahisa HIRASAWA, Kiyotaka TSUKADA
  • Publication number: 20170222112
    Abstract: A light-emitting element mounting substrate includes a substrate including an insulating resin material, a first conductor layer formed on a first main surface of the substrate, a second conductor layer formed on a second main surface of the substrate on the opposite side to the first main surface, metal blocks positioned such that the metal blocks are penetrating through the first conductor layer, substrate and second conductor layer, and through hole conductors formed to extend adjacent to the metal blocks respectively such that the through hole conductors electrically connect the first conductor layer and the second conductor layer. The first conductor layer has an element mounting portion formed such that a light-emitting element is mounted to a first conductor layer side on the element mounting portion, and the metal blocks are positioned such that the metal blocks have end portions in the element mounting portion of the first conductor layer.
    Type: Application
    Filed: January 26, 2017
    Publication date: August 3, 2017
    Applicant: IBIDEN CO., LTD.
    Inventors: Takahisa HIRASAWA, Kiyotaka TSUKADA
  • Publication number: 20160135302
    Abstract: A substrate for mounting an electronic component includes a base material including insulating resin, a first conductor layer formed on first surface of the material, a second conductor layer formed on second surface of the material, and a metal block inserted into a hole penetrating through the first conductor, material and second conductor such that the metal block is fitted in the hole. The material has a bent portion in contact with the metal block in the hole such that the bent portion is bending toward the second conductor, the metal block has surface on first conductor side such that the surface has an outer peripheral portion having a curved-surface shape, and the hole has a first fitting inlet on the first conductor layer side and a second fitting inlet on second conductor side and that the metal block is positioned in contact with the second fitting inlet.
    Type: Application
    Filed: November 11, 2015
    Publication date: May 12, 2016
    Applicant: IBIDEN CO., LTD.
    Inventors: Naoyuki NAGAYA, Kiyotaka Tsukada
  • Patent number: 8710374
    Abstract: A printed wiring board is manufactured by a method in which a core substrate having an insulation substrate and a conductive circuit formed on the insulation substrate is provided. An inner insulation layer is formed on the core substrate, and a surface of the inner insulation layer is treated to form a roughened portion on the surface. An outer insulation layer including a reinforcing material is formed on the surface of the inner insulation layer having the roughened portion.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: April 29, 2014
    Assignee: Ibiden Co., Ltd.
    Inventors: Kiyotaka Tsukada, Takamichi Sugiura
  • Patent number: 8441806
    Abstract: A circuit board comprises a first conductive post for electrically connecting to the first electrode of the semiconductor device, a first metal plate connecting to the first conductive post, a second conductive post for electrically connecting to the second electrode of the semiconductor device, a second metal plate connecting to the second conductive post, a third conductive post for electrically connecting to the third electrode of the semiconductor device, and a third metal plate connecting to the third conductive post.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: May 14, 2013
    Assignee: Ibiden Co., Ltd.
    Inventors: Kiyotaka Tsukada, Tetsuya Muraki
  • Patent number: 8415791
    Abstract: A semiconductor device includes a support plate having a hole formed therein and a conductor formed on a wall surface of the hole, a semiconductor element; and a conductive post formed by a conductor having a first end portion at one end, and a second end portion at an other end. The second end portion of the conductive post is connected to the semiconductor element, and a side surface of the conductive post is fixed to the conductor on the wall surface of the hole deformed by pressing force of the conductive post on a side closer to the first end portion than the second end portion.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: April 9, 2013
    Assignee: Ibiden Co., Ltd.
    Inventors: Kiyotaka Tsukada, Tetsuya Muraki, Atsunari Yamashita, Yoshitomo Tomida
  • Patent number: 8378231
    Abstract: A semiconductor device includes wiring boards each having an insulating board, conductor circuits and through-holes, the insulating board having top and bottom surfaces, the conductor circuits formed on the top and bottom surfaces, the through holes penetrating the insulating board and electrically connecting the conductor circuits of the top and bottom surfaces; conductor posts each having flange, head and leg portions, the flange portion having first and second surfaces and having an external diameter larger than that of the through-hole, the head portion protruding from the first surface, the leg portion protruding from the second surface; and electronic components each having an electrode formed on one or more surfaces and connected to the leg portion. The head portion is inserted until the first surface of the flange portion comes into contact with the bottom surface of the wiring board and electrically connected at an inner wall of the through-hole.
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: February 19, 2013
    Assignee: Ibiden Co., Ltd.
    Inventors: Kiyotaka Tsukada, Toshihiro Nomura, Daisuke Minoura
  • Patent number: 8327533
    Abstract: A multilayer printed wiring board is manufactured by a method in which a core substrate is provided, an insulation layer including a thermosetting resin material is formed over the core substrate, an uncured resin layer including a thermoplastic resin material is placed on the insulation layer, the uncured resin layer is cured to form a resin complex layer including a resin complex comprising the thermosetting resin material and the thermoplastic resin material, and a conductive circuit is formed over the resin complex layer.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: December 11, 2012
    Assignee: Ibiden Co., Ltd.
    Inventors: Kiyotaka Tsukada, Takamichi Sugiura
  • Patent number: 8278753
    Abstract: The semiconductor device comprises a support plate; a semiconductor element; and conductor posts consisting of a conductor having a first end at one end and a second end at the other end, the second end being connected to the semiconductor element and the conductor posts being connected to the support plate at a position on the side of the second end that is closer to the first end, wherein the conductor posts have a heat conductivity of approximately 200 W/m·K or higher and a Vickers hardness of approximately 70 or lower.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: October 2, 2012
    Assignee: Ibiden Co., Ltd.
    Inventors: Kiyotaka Tsukada, Tetsuya Muraki, Atsunari Yamashita, Yoshitomo Tomida
  • Publication number: 20120125680
    Abstract: An opening is formed in resin 20 by a laser beam so that a via hole is formed. At this time, copper foil 22, the thickness of which is reduced (to 3 ?m) by performing etching to lower the thermal conductivity is used as a conformal mask. Therefore, an opening 20a can be formed in the resin 20 if the number of irradiation of pulse-shape laser beam is reduced. Therefore, occurrence of undercut of the resin 20 which forms an interlayer insulating resin layer can be prevented. Thus, the reliability of the connection of the via holes can be prevented. Thus, the reliability of the connection of the via holes can be improved.
    Type: Application
    Filed: January 25, 2012
    Publication date: May 24, 2012
    Applicant: IBIDEN CO., LTD
    Inventors: Naohiro Hirose, Kouta Noda, Hiroshi Segawa, Honjin En, Kiyotaka Tsukada, Naoto Ishida, Kouji Asano, Atsushi Shouda
  • Patent number: 8156646
    Abstract: A composite layer composed of an Ni layer and a Pd layer is formed on a solder pad, and a solder on the composite layer is composed of a solder containing no lead. Because a Pd layer (palladium layer) reduces phenomenons such as repellency of the solder, adhesiveness with the solder can be enhanced. Because a Pd layer has a higher degree of rigidity than a gold layer, thermal stress is absorbed into the Pd layer and buffered so as to reduce the degree of transmission of stress to the solder bump, or to the solder layer, by thermal stress.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: April 17, 2012
    Assignee: IBIDEN Co., Ltd.
    Inventors: Tsutomu Iwai, Yoshihiro Kodera, Shinya Maeda, Hiroyuki Watanabe, Kazunari Suzuki, Kiyotaka Tsukada
  • Patent number: 8148643
    Abstract: An opening is formed in resin 20 by a laser beam so that a via hole is formed. At this time, copper foil 22, the thickness of which is reduced (to 3 ?m) by performing etching to lower the thermal conductivity is used as a conformal mask. Therefore, an opening 20a can be formed in the resin 20 if the number of irradiation of pulse-shape laser beam is reduced. Therefore, occurrence of undercut of the resin 20 which forms an interlayer insulating resin layer can be prevented. Thus, the reliability of the connection of the via holes can be improved.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: April 3, 2012
    Assignee: IBIDEN Co., Ltd.
    Inventors: Naohiro Hirose, Kouta Noda, Hiroshi Segawa, Honjin En, Kiyotaka Tsukada, Naoto Ishida, Kouji Asano, Atsushi Shouda