Patents by Inventor Nobuo Saitou

Nobuo Saitou 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: 20230133852
    Abstract: The present invention provides a decorative sheet which is provided with a relief pattern in the outer surface, while having excellent chemical resistance, wherein the relief pattern is suitably maintained even after molding. A decorative sheet which is provided with a relief pattern in the outer surface, while sequentially having, from the outer side, at least a first protective layer that constitutes the relief pattern and a second protective layer. The first protective layer is formed of a cured product of a resin composition that contains an ionizing radiation curable resin and a thermoplastic resin; and the second protective layer is formed of a cured product of an ionizing radiation curable resin composition that contains a polycarbonate (meth)acrylate.
    Type: Application
    Filed: March 31, 2020
    Publication date: May 4, 2023
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Hiroaki Nakayama, Nobuo Saitou, Minoru Ariyama, Yoshiyuki Meiki, Sakie Kataoka, Kenta Takayama, Daisuke Yokoyama
  • Patent number: 11123969
    Abstract: A decorative sheet includes a design layer, a primer layer and a surface protective layer formed by cross-linking and curing an ionizing radiation curable resin composition in this order on a base material. A surface of the surface protective layer is smooth. A ten point average roughness RzJIS on a rear face of the decorative sheet and a thickness T of the base material satisfies the following equation (I); and an arithmetic average roughness Ra on the rear face and a thickness T of the base material satisfies the following equation (II): T×0.30?RzJIS??(I) T×0.20?Ra?T×0.005??(II) Or an arithmetic average roughness Ra on a rear face of the decorative sheet is 1.0 to 10.0 ?m. A decorated resin molded article is produced by integrating the decorative sheet with an outer surface of a resin molded article at the same time as injection molding.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: September 21, 2021
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventor: Nobuo Saitou
  • Patent number: 10286634
    Abstract: The present invention provides a decorative sheet that excels in moldability and a decorative resin-molded article that uses the decorative sheet and that excels in chemical resistance. In the decorative sheet, at least a substrate layer and a surface protection layer formed of an ionizing radiation curable resin composition are stacked. The surface protection layer includes blocked isocyanate.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: May 14, 2019
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Sakie Kataoka, Nobuo Saitou, Megumi Awa, Hideaki Koike
  • Patent number: 10265895
    Abstract: The decorative sheet for three-dimensional molding includes a thin metal film layer, a surface protection layer, and a base film, at least the thin metal film layer and the surface protection layer being disposed on the base film in this order, in which the surface protection layer consists of a cured material of an ionizing radiation curable resin composition containing a polycarbonate(meth)acrylate and/or an acrylic silicone (meth)acrylate. The decorative sheet for three-dimensional molding, which has excellent moldability, provides a decorative molded article with a metallic style in excellent design and with excellent abrasion resistance.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: April 23, 2019
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Mari Takano, Nobuo Saitou
  • Publication number: 20180178497
    Abstract: A decorative sheet includes a design layer, a primer layer and a surface protective layer formed by cross-linking and curing an ionizing radiation curable resin composition in this order on a base material. A surface of the surface protective layer is smooth. A ten point average roughness RzJIS on a rear face of the decorative sheet and a thickness T of the base material satisfies the following equation (I); and an arithmetic average roughness Ra on the rear face and a thickness T of the base material satisfies the following equation (II): T×0.30?RzJIS??(I) T×0.20?Ra?T×0.005??(II) Or an arithmetic average roughness Ra on a rear face of the decorative sheet is 1.0 to 10.0 ?m. A decorated resin molded article is produced by integrating the decorative sheet with an outer surface of a resin molded article at the same time as injection molding.
    Type: Application
    Filed: February 21, 2018
    Publication date: June 28, 2018
    Inventor: Nobuo Saitou
  • Patent number: 9914285
    Abstract: A decorative sheet which comprises, on a base film layer, a second picture layer that is partially provided and a surface protective layer that is present on and in contact with the second picture layer and covers the entire surface of the base film layer including the region where the second picture layer is formed and the region where the second picture layer is not formed. The decorative sheet is characterized in that: a binder resin for a second picture ink that constitutes the second picture layer is a thermoplastic resin; the surface protective layer is formed of a crosslinking-cured product of an ionizing radiation curable resin composition that contains a polycarbonate (meth)acrylate and/or an acrylic silicone (meth)acrylate; and a low gloss pattern layer that has a low luster region is formed in the surface protective layer right above the second picture layer by the interaction between the ionizing radiation curable resin and the thermoplastic resin.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: March 13, 2018
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Takayoshi Akou, Nobuo Saitou, Emi Harigae
  • Publication number: 20170095996
    Abstract: The present invention provides a decorative sheet that excels in moldability and a decorative resin-molded article that uses the decorative sheet and that excels in chemical resistance. In the decorative sheet, at least a substrate layer and a surface protection layer formed of an ionizing radiation curable resin composition are stacked. The surface protection layer includes blocked isocyanate.
    Type: Application
    Filed: March 24, 2015
    Publication date: April 6, 2017
    Inventors: Sakie Kataoka, Nobuo Saitou, Megumi Awa, Hideaki Koike
  • Patent number: 9605120
    Abstract: The invention provides a decorative sheet including at least a surface protective layer on a substrate, in which the surface protective layer includes a cured material of an ionizing radiation curable resin composition at least containing a polycarbonate(meth)acrylate (A) and a multi-functional (meth)acrylate (B) in a mass ratio (A)/(B) of (98/2)-(70/30). The invention also provides a decorative sheet including at least a surface protective layer on a substrate, in which the surface protective layer includes a cured material of an ionizing radiation curable resin composition at least containing an acrylic silicone (meth)acrylate (C) and a multi-functional (meth)acrylate (B) in a mass ratio (C)/(B) of (50/50)-(95/5). The present invention provides a decorative sheet with a surface protective layer having scratch resistance as well as three-dimensional formability.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: March 28, 2017
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Nobuo Saitou, Emi Harigae
  • Patent number: 9440383
    Abstract: A decorative sheet for insert molding prepared by laminating at least a surface protective layer on a support that includes an ABS resin, wherein the support has a flexural modulus of 1500 to 3000 MPa, and a thickness of 100 to 500 ?m; the surface protective layer is obtained by cross-linking and curing an ionizing radiation curable resin composition; and the ionizing radiation curable resin composition has a tensile modulus of more than 100 MPa to less than 1000 MPa and a static frictional coefficient of 1.0 or less on a surface. The decorative sheet for insert molding includes at least a picture layer, a low glossy picture ink layer provided partially and the surface protective layer in this order on the support. The surface protective layer has a thickness of 1 to 30 ?m.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: September 13, 2016
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Nobuo Saitou, Jun Kaneki
  • Publication number: 20160236447
    Abstract: A decorative sheet which comprises, on a base film layer, a second picture layer that is partially provided and a surface protective layer that is present on and in contact with the second picture layer and covers the entire surface of the base film layer including the region where the second picture layer is formed and the region where the second picture layer is not formed. The decorative sheet is characterized in that: a binder resin for a second picture ink that constitutes the second picture layer is a thermoplastic resin; the surface protective layer is formed of a crosslinking-cured product of an ionizing radiation curable resin composition that contains a polycarbonate (meth)acrylate and/or an acrylic silicone (meth)acrylate; and a low gloss pattern layer that has a low luster region is formed in the surface protective layer right above the second picture layer by the interaction between the ionizing radiation curable resin and the thermoplastic resin.
    Type: Application
    Filed: April 28, 2016
    Publication date: August 18, 2016
    Inventors: Takayoshi AKOU, Nobuo SAITOU, Emi HARIGAE
  • Publication number: 20160200082
    Abstract: The present invention provides a decorative sheet having high moldability and scratch resistance, and a high three-dimensional feeling when molded into a decorative resin molded article. The decorative sheet includes at least a base material layer, a first protective layer, and a second protective layer provided on a part of the first protective layer in this order, wherein the first protective layer is formed of an ionizing radiation curable resin composition containing a polyfunctional polycarbonate (meth)acrylate.
    Type: Application
    Filed: September 30, 2014
    Publication date: July 14, 2016
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Megumi Awa, Nobuo Saitou, Sakie Kataoka, Hideaki Koike
  • Patent number: 9352611
    Abstract: A decorative sheet which comprises, on a base film layer, a second picture layer that is partially provided and a surface protective layer that is present on and in contact with the second picture layer and covers the entire surface of the base film layer including the region where the second picture layer is formed and the region where the second picture layer is not formed. The decorative sheet is characterized in that: a binder resin for a second picture ink that constitutes the second picture layer is a thermoplastic resin; the surface protective layer is formed of a crosslinking-cured product of an ionizing radiation curable resin composition that contains a polycarbonate (meth)acrylate and/or an acrylic silicone (meth)acrylate; and a low gloss pattern layer that has a low luster region is formed in the surface protective layer right above the second picture layer by the interaction between the ionizing radiation curable resin and the thermoplastic resin.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: May 31, 2016
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Takayoshi Akou, Nobuo Saitou, Emi Harigae
  • Patent number: 9334420
    Abstract: The decorative sheet includes a surface protection layer and a substrate at least, the surface protection layer being provided on the substrate, in which the surface protection layer consists of a cured material of an ionizing radiation curable resin composition at least containing a urethane(meth)acrylate with a polycarbonate skeleton (A) and a multi-functional (meth)acrylate (B) in a mass ratio ((A)/(B)) of (98/2)-(70/30).
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: May 10, 2016
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventor: Nobuo Saitou
  • Patent number: 9120248
    Abstract: There are provided a shaping sheet provided on a surface thereof with a fine irregular shape which is capable of forming a fine pattern with a high-grade feel on a material to be shaped, and is excellent in releasability from the material, as well as a decorative plate shaped by the shaping sheet. The shaping sheet of the present invention includes a substrate, at least an ink layer partially formed on the substrate and a surface shaped layer which is present on and contacted with the ink layer so as to cover a whole surface including both a region where the ink layer is formed and a region where no ink layer is formed, wherein the surface shaped layer is formed by crosslinking and curing an ionizing radiation-curable resin composition, and has a convex shape on a surface thereof which is located in a portion just above the ink layer and in the vicinity of the portion.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: September 1, 2015
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Nobuo Saitou, Toshitake Kobayashi, Kenichi Tachihara, Takashi Iizuka
  • Patent number: 9108392
    Abstract: The invention provides a decorative sheet including at least a surface protective layer on a substrate, in which the surface protective layer includes a cured material of an ionizing radiation curable resin composition at least containing a polycarbonate(meth)acrylate (A) and a multi-functional (meth)acrylate (B) in a mass ratio (A)/(B) of (98/2)-(70/30). The invention also provides a decorative sheet including at least a surface protective layer on a substrate, in which the surface protective layer includes a cured material of an ionizing radiation curable resin composition at least containing an acrylic silicone (meth)acrylate (C) and a multi-functional (meth)acrylate (B) in a mass ratio (C)/(B) of (50/50)-(95/5). The present invention provides a decorative sheet with a surface protective layer having scratch resistance as well as three-dimensional formability.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: August 18, 2015
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Nobuo Saitou, Emi Harigae
  • Patent number: 9023742
    Abstract: Provided is a photocatalytic coating in which the coating per se is hardly eroded even when a photocatalyst is excited and a coating surface having strong hydrophobic tendency can be formed. The photocatalytic coating is prepared by dispersing or dissolving at least a photocatalyst, a tetrafluoro-ethylene-based resin obtained by graft polymerization of a sulfonic acid, a compound containing metal ion having an ionic radius not less than an ionic radius of calcium and/or complex ion having an ionic radius not less than the ionic radius of calcium into a solvent. Further, hydroxide is used as the compound containing the metal ion or an electrically neutral surfactant is added to the photocatalytic coating.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: May 5, 2015
    Assignees: Metaltech Co., Ltd., Kyushu Institute of Technology
    Inventors: Nobuo Saitou, Tohru Kitamura, Teruki Matsukawa, Teruhisa Ohno
  • Publication number: 20140302293
    Abstract: The decorative sheet for three-dimensional molding includes a thin metal film layer, a surface protection layer, and a base film, at least the thin metal film layer and the surface protection layer being disposed on the base film in this order, in which the surface protection layer consists of a cured material of an ionizing radiation curable resin composition containing a polycarbonate(meth)acrylate and/or an acrylic silicone (meth)acrylate. The decorative sheet for three-dimensional molding, which has excellent moldability, provides a decorative molded article with a metallic style in excellent design and with excellent abrasion resistance.
    Type: Application
    Filed: March 23, 2012
    Publication date: October 9, 2014
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Mari Takano, Nobuo Saitou
  • Publication number: 20140272293
    Abstract: A decorative sheet includes a design layer, a primer layer and a surface protective layer formed by cross-linking and curing an ionizing radiation curable resin composition in this order on a base material. A surface of the surface protective layer is smooth. In one aspect, a ten point average roughness RzJIS on a rear face of the decorative sheet and a thickness T of the base material satisfies the following equation (I); and an arithmetic average roughness Ra on the rear face and a thickness T of the base material satisfies the following equation (II): T×0.30?RzJIS??(I) T×0.20?Ra?T×0.005??(II). In another aspect, an arithmetic average roughness Ra on a rear face of the decorative sheet is 1.0 to 10.0 ?m.
    Type: Application
    Filed: May 30, 2014
    Publication date: September 18, 2014
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventor: Nobuo Saitou
  • Publication number: 20140255669
    Abstract: A decorative sheet which comprises, on a base film layer, a second picture layer that is partially provided and a surface protective layer that is present on and in contact with the second picture layer and covers the entire surface of the base film layer including the region where the second picture layer is formed and the region where the second picture layer is not formed. The decorative sheet is characterized in that: a binder resin for a second picture ink that constitutes the second picture layer is a thermoplastic resin; the surface protective layer is formed of a crosslinking-cured product of an ionizing radiation curable resin composition that contains a polycarbonate (meth)acrylate and/or an acrylic silicone (meth)acrylate; and a low gloss pattern layer that has a low luster region is formed in the surface protective layer right above the second picture layer by the interaction between the ionizing radiation curable resin and the thermoplastic resin.
    Type: Application
    Filed: March 9, 2012
    Publication date: September 11, 2014
    Inventors: Takayoshi Akou, Nobuo Saitou, Emi Harigae
  • Patent number: 8801888
    Abstract: The present invention relates to a production process for a decorative sheet comprising a step in which a primer layer is formed on a releasing film having a smooth surface, a step in which a design layer is formed on the above primer layer, a step in which the primer layer and the design layer are transferred on a base material, a step in which the releasing film on the base material is peeled off, a step in which an ionizing radiation curable resin composition is laminated on the primer layer formed on the base material and a step in which the above ionizing radiation curable resin composition is cross-linked and cured to form a surface protective layer.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: August 12, 2014
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventor: Nobuo Saitou