Patents by Inventor Shigeki Chujo

Shigeki Chujo 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: 10765011
    Abstract: A multilayer wiring board having a high degree of freedom of wiring design and realizing high-density wiring, and a method to simply manufacture the multilayer wiring board is provided. A core substrate with two or more wiring layers provided thereon through an electrical insulating layer. The core substrate has a plurality of throughholes filled with an electroconductive material, and the front side and back side of the core substrate have been electrically connected to each other by the electroconductive material. The throughholes have an opening diameter in the range of 10 to 100 ?m. An insulation layer and an electroconductive material diffusion barrier layer are also provided, and the electroconductive material is filled into the throughholes through the insulation layer. A first wiring layer provided through an electrical insulating layer on the core substrate is connected to the electroconductive material filled into the throughhole through via.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: September 1, 2020
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Shigeki Chujo, Koichi Nakayama
  • Publication number: 20190394886
    Abstract: A multilayer wiring board having a high degree of freedom of wiring design and realizing high-density wiring, and a method to simply manufacture the multilayer wiring board is provided. A core substrate with two or more wiring layers provided thereon through an electrical insulating layer. The core substrate has a plurality of throughholes filled with an electroconductive material, and the front side and back side of the core substrate have been electrically connected to each other by the electroconductive material. The throughholes have an opening diameter in the range of 10 to 100 ?m. An insulation layer and an electroconductive material diffusion barrier layer are also provided, and the electroconductive material is filled into the throughholes through the insulation layer. A first wiring layer provided through an electrical insulating layer on the core substrate is connected to the electroconductive material filled into the throughhole through via.
    Type: Application
    Filed: September 5, 2019
    Publication date: December 26, 2019
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Shigeki CHUJO, Koichi NAKAYAMA
  • Patent number: 10477702
    Abstract: A multilayer wiring board having a high degree of freedom of wiring design and realizing high-density wiring, and a method to simply manufacture the multilayer wiring board is provided. A core substrate with two or more wiring layers provided thereon through an electrical insulating layer. The core substrate has a plurality of throughholes filled with an electroconductive material, and the front side and back side of the core substrate have been electrically connected to each other by the electroconductive material. The throughholes have an opening diameter in the range of 10 to 100 ?m. An insulation layer and an electroconductive material diffusion barrier layer are also provided, and the electroconductive material is filled into the throughholes through the insulation layer. A first wiring layer provided through an electrical insulating layer on the core substrate is connected to the electroconductive material filled into the throughhole through via.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: November 12, 2019
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Shigeki Chujo, Koichi Nakayama
  • Publication number: 20170223842
    Abstract: A multilayer wiring board has a high degree of freedom of wiring design and can realize high-density wiring, and a method to simply manufacture the multilayer wiring board. A core substrate with two or more wiring layers provided thereon through an electrical insulating layer. The core substrate has a plurality of throughholes filled with an electroconductive material, and the front side and back side of the core substrate have been electrically conducted to each other by the electroconductive material. The throughholes have an opening diameter in the range of 10 to 100 ?m. An insulation layer and an electroconductive material diffusion barrier layer are also provided, and the electroconductive material is filled into the throughholes through the insulation layer. A first wiring layer provided through an electrical insulating layer on the core substrate is connected to the electroconductive material filled into the throughhole through via.
    Type: Application
    Filed: April 21, 2017
    Publication date: August 3, 2017
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Shigeki CHUJO, Koichi NAKAYAMA
  • Patent number: 9659849
    Abstract: A multilayer wiring board has a high degree of freedom of wiring design and can realize high-density wiring, and a method to simply manufacture the multilayer wiring board. A core substrate with two or more wiring layers provided thereon through an electrical insulating layer. The core substrate has a plurality of throughholes filled with an electroconductive material, and the front side and back side of the core substrate have been electrically conducted to each other by the electroconductive material. The throughholes have an opening diameter in the range of 10 to 100 ?m. An insulation layer and an electroconductive material diffusion barrier layer are also provided, and the electroconductive material is filled into the throughholes through the insulation layer. A first wiring layer provided through an electrical insulating layer on the core substrate is connected to the electroconductive material filled into the throughhole through via.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: May 23, 2017
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Shigeki Chujo, Koichi Nakayama
  • Patent number: 9136214
    Abstract: A multilayer wiring board has a high degree of freedom of wiring design and can realize high-density wiring, and a method to simply manufacture the multilayer wiring board. A core substrate with two or more wiring layers provided thereon through an electrical insulating layer. The core substrate has a plurality of throughholes filled with an electroconductive material, and the front side and back side of the core substrate have been electrically conducted to each other by the electroconductive material. The throughholes have an opening diameter in the range of 10 to 100 ?m. An insulation layer and an electroconductive material diffusion barrier layer are also provided, and the electroconductive material is filled into the throughholes through the insulation layer. A first wiring layer provided through an electrical insulating layer on the core substrate is connected to the electroconductive material filled into the throughhole through via.
    Type: Grant
    Filed: January 21, 2010
    Date of Patent: September 15, 2015
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Shigeki Chujo, Koichi Nakayama
  • Publication number: 20150076107
    Abstract: A multilayer wiring board has a high degree of freedom of wiring design and can realize high-density wiring, and a method to simply manufacture the multilayer wiring board. A core substrate with two or more wiring layers provided thereon through an electrical insulating layer. The core substrate has a plurality of throughholes filled with an electroconductive material, and the front side and back side of the core substrate have been electrically conducted to each other by the electroconductive material. The throughholes have an opening diameter in the range of 10 to 100 ?m. An insulation layer and an electroconductive material diffusion barrier layer are also provided, and the electroconductive material is filled into the throughholes through the insulation layer. A first wiring layer provided through an electrical insulating layer on the core substrate is connected to the electroconductive material filled into the throughhole through via.
    Type: Application
    Filed: November 19, 2014
    Publication date: March 19, 2015
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Shigeki CHUJO, Koichi NAKAYAMA
  • Patent number: 8196298
    Abstract: Disclosed is a method for manufacturing an electroconductive material-filled throughhole substrate that is free from any void part in the electroconductive material filled into the throughholes. The method comprises forming an electroconductive base layer on one side of a core substrate having throughholes, and precipitating and growing an electroconductive material from one direction within the throughholes by electroplating using the electroconductive base layer as a seed layer to fill the electroconductive material into the throughholes without forming any void part and thus to manufacture an electroconductive material-filled throughhole substrate.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: June 12, 2012
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Shigeki Chujo, Koichi Nakayama
  • Patent number: 7918020
    Abstract: Disclosed is a method for manufacturing an electroconductive material-filled throughhole substrate that is free from any void part in the electroconductive material filled into the throughholes. The method comprises forming an electroconductive base layer on one side of a core substrate having throughholes, and precipitating and growing an electroconductive material from one direction within the throughholes by electroplating using the electroconductive base layer as a seed layer to fill the electroconductive material into the throughholes without forming any void part and thus to manufacture an electroconductive material-filled throughhole substrate.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: April 5, 2011
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Shigeki Chujo, Koichi Nakayama
  • Publication number: 20110023298
    Abstract: Disclosed is a method for manufacturing an electroconductive material-filled throughhole substrate that is free from any void part in the electroconductive material filled into the throughholes. The method comprises forming an electroconductive base layer on one side of a core substrate having throughholes, and precipitating and growing an electroconductive material from one direction within the throughholes by electroplating using the electroconductive base layer as a seed layer to fill the electroconductive material into the throughholes without forming any void part and thus to manufacture an electroconductive material-filled throughhole substrate.
    Type: Application
    Filed: October 13, 2010
    Publication date: February 3, 2011
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Shigeki Chujo, Koichi Nakayama
  • Patent number: 7800002
    Abstract: Disclosed are a multilayer wiring board, which has a high degree of freedom of wiring design and can realize high-density wiring, and a method which can simply manufacture the multilayer wiring board. The multilayer wiring board comprises a core substrate and two or more wiring layers provided on the core substrate through an electrical insulating layer. The core substrate has a plurality of throughholes filled with an electroconductive material, and the front side and back side of the core substrate have been electrically conducted to each other by the electroconductive material. The throughholes have an opening diameter in the range of 10 to 100 ?m. An insulation layer and an electroconductive material diffusion barrier layer are also provided, and the electroconductive material is filled into the throughholes through the insulation layer.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: September 21, 2010
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Shigeki Chujo, Koichi Nakayama
  • Publication number: 20100116782
    Abstract: Disclosed are a multilayer wiring board, which has a high degree of freedom of wiring design and can realize high-density wiring, and a method which can simply manufacture the multilayer wiring board. The multilayer wiring board comprises a core substrate and two or more wiring layers provided on the core substrate through an electrical insulating layer. The core substrate has a plurality of throughholes filled with an electroconductive material, and the front side and back side of the core substrate have been electrically conducted to each other by the electroconductive material. The throughholes have an opening diameter in the range of 10 to 100 ?m. An insulation layer and an electroconductive material diffusion barrier layer are also provided, and the electroconductive material is filled into the throughholes through the insulation layer.
    Type: Application
    Filed: January 21, 2010
    Publication date: May 13, 2010
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Shigeki Chujo, Koichi Nakayama
  • Publication number: 20080092378
    Abstract: Disclosed is a method for manufacturing an electroconductive material-filled throughhole substrate that is free from any void part in the electroconductive material filled into the throughholes. The method comprises forming an electroconductive base layer on one side of a core substrate having throughholes, and precipitating and growing an electroconductive material from one direction within the throughholes by electroplating using the electroconductive base layer as a seed layer to fill the electroconductive material into the throughholes without forming any void part and thus to manufacture an electroconductive material-filled throughhole substrate.
    Type: Application
    Filed: November 14, 2005
    Publication date: April 24, 2008
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Shigeki Chujo, Koichi Nakayama
  • Publication number: 20080083558
    Abstract: Disclosed are a multilayer wiring board, which has a high degree of freedom of wiring design and can realize high-density wiring, and a method which can simply manufacture the multilayer wiring board. The multilayer wiring board comprises a core substrate and two or more wiring layers provided on the core substrate through an electrical insulating layer. The core substrate has a plurality of throughholes filled with an electroconductive material, and the front side and back side of the core substrate have been electrically conducted to each other by the electroconductive material. The throughholes have an opening diameter in the range of 10 to 100 ?m. An insulation layer and an electroconductive material diffusion barrier layer are also provided, and the electroconductive material is filled into the throughholes through the insulation layer.
    Type: Application
    Filed: November 14, 2005
    Publication date: April 10, 2008
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Shigeki Chujo, Koichi Nakayama
  • Patent number: 7011727
    Abstract: A thermal transfer film comprises a coloring layer formed on a substrate film via an intermediate layer, wherein the intermediate layer contains a thermally fusible substance and a non-transferable binder resin, the melt viscosity of the thermally fusible substance in the temperature range 15 to 25° C. higher than the fuse peak temperature of the thermally fusible substance is in the range of 100 to 1000 mPa·s, the fuse peak temperature of the thermally fusible substance is in the range of 50 to 110° C., the crystallization peak temperature of the thermally fusible substance is in the range of ?20 to 100 ° C., the crystallization peak temperature of the thermally fusible substance is lower than the fuse peak temperature by 10° C. or more, and the softening temperature of the binder resin measured by the ring and ball method is in the range of 130 to 400° C. This thermal transfer film is capable of forming a printed product with a good printing quality.
    Type: Grant
    Filed: June 19, 2003
    Date of Patent: March 14, 2006
    Assignee: DAI Nippon Printing Co., Ltd.
    Inventors: Masanori Torii, Mitsuru Maeda, Fumihiko Mizukami, Shigeki Chujo
  • Patent number: 6825261
    Abstract: An antistatic coat of the present invention coats a surface of a base body so as to prevent accumulation of electric charges in the base body, the antistatic coat having a multi-layers structure comprising at least one antistatic layer, and the antistatic layer being disposed between the base body and an outermost surface layer of the antistatic coat. On the back surface side of a thermal transfer sheet, there is formed a heat resistant slip layer through an antistatic layer, or a heat resistant slip layer containing a conductive material. Sulfonated polyaniline, a conductive carbon black having primary particle size of up to 40 nm and specific surface of at least 130 m2/g, and a conductive carbon black having an oil absorption of at least 75 ml/100 g are favorable conductive material.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: November 30, 2004
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Akihiko Katashima, Norikatsu Ono, Masayuki Ando, Shigeki Chujo, Masayoshi Tanaka
  • Publication number: 20030211253
    Abstract: A thermal transfer film comprises a coloring layer formed on a substrate film via an intermediate layer, wherein the intermediate layer contains a thermally fusible substance and a non-transferable binder resin, the melt viscosity of the thermally fusible substance in the temperature range 15 to 25° C. higher than the fuse peak temperature of the thermally fusible substance is in the range of 100 to 1000 mPa·s, the fuse peak temperature of the thermally fusible substance is in the range of 50 to 110° C., the crystallization peak temperature of the thermally fusible substance is in the range of −20 to 100 ° C., the crystallization peak temperature of the thermally fusible substance is lower than the fuse peak temperature by 10° C. or more, and the softening temperature of the binder resin measured by the ring and ball method is in the range of 130 to 400 ° C. This thermal transfer film is capable of forming a printed product with a good printing quality.
    Type: Application
    Filed: June 19, 2003
    Publication date: November 13, 2003
    Inventors: Masanori Torii, Mitsuru Maeda, Fumihiko Mizukami, Shigeki Chujo
  • Publication number: 20030198776
    Abstract: The present invention is for providing a thermal transfer film capable of providing a vivid print without generation of a void, and an image forming method using the same. The thermal transfer film comprises a coloring layer formed on a substrate film via an intermediate layer, wherein the intermediate layer comprises materials according to either one of the following combinations: (1) a polycaprolactone resin having a 100-1,000 mPa·s melt viscosity at 75° C., and a binder resin having a 130-400° C. extrapolation fuse starting temperature; (2) a thermally fusible substance having a 100-1,000 mPa·s melt viscosity at 75° C., and a binder resin having a 150-400° C. extrapolation fuse starting temperature, (3) a polycaprolactone resin having a 100-1,000 mPa·s melt viscosity at 75° C., and a non-transferable binder resin having a 130-400° C. softening temperature; and (4) a thermally fusible substance having a 100-1,000 mPa·s melt viscosity at 75° C.
    Type: Application
    Filed: January 31, 2003
    Publication date: October 23, 2003
    Inventors: Masanori Torii, Mitsuru Maeda, Fumihiko Mizukami, Shigeki Chujo
  • Patent number: 6610387
    Abstract: A thermal transfer film comprises a coloring layer formed on a substrate film via an intermediate layer, wherein the intermediate layer contains a thermally fusible substance and a non-transferable binder resin, the melt viscosity of the thermally fusible substance in the temperature range 15 to 25° C. higher than the fuse peak temperature of the thermally fusible substance is in the range of 100 to 1000 mPa·s, the fuse peak temperature of the thermally fusible substance is in the range of 50 to 110° C., the crystallization peak temperature of the thermally fusible substance is in the range of −20 to 100° C., the crystallization peak temperature of the thermally fusible substance is lower than the fuse peak temperature by 10° C. or more, and the softening temperature of the binder resin measured by the ring and ball method is in the range of 130 to 400° C. This thermal transfer film is capable of forming a printed product with a good printing quality.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: August 26, 2003
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Masanori Torii, Mitsuru Maeda, Fumihiko Mizukami, Shigeki Chujo
  • Patent number: 6548148
    Abstract: The present invention is for providing a thermal transfer film capable of providing a vivid print without generation of a void, and an image forming method using the same. The thermal transfer film comprises a coloring layer formed on a substrate film via an intermediate layer, wherein the intermediate layer comprises materials according to either one of the following combinations: (1) a polycaprolactone resin having a 100-1,000 mPa·s melt viscosity at 75° C., and a binder resin having a 130-400° C. extrapolation fuse starting temperature; (2) a thermally fusible substance having a 100-1,000 mPa·s melt viscosity at 75° C., and a binder resin having a 150-400° C. extrapolation fuse starting temperature, (3) a polycaprolactone resin having a 100-1,000 mPa·s melt viscosity at 75° C., and a non-transferable binder resin having a 130-400° C softening temperature; and (4) a thermally fusible substance having a 100-1,000 mPa·s melt viscosity at 75° C.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: April 15, 2003
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Masanori Torii, Mitsuru Maeda, Fumihiko Mizukami, Shigeki Chujo