Patents by Inventor Takeshi Watase

Takeshi Watase 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: 12059868
    Abstract: A surface-treated metal sheet for polyolefin adhesion is provided with a metal sheet, a first layer provided on at least one surface of the metal sheet, and a second layer provided on the first layer, wherein the first layer containing an epoxy resin and a blocked isocyanate, the second layer containing an acid-modified polyolefin resin, the thickness of the first layer being 15 to 40 ?m, and the thickness of the second layer being 4 to 30 ?m.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: August 13, 2024
    Assignee: KOBE STEEL, LTD.
    Inventors: Yasuo Hirano, Tatsuhiko Iwa, Tetsuya Yamamoto, Takeshi Watase
  • Patent number: 11897230
    Abstract: The present invention relates to a surface-treated metal sheet for polyolefin resin bonding having a metal substrate and an adhesive layer laminated on at least one surface of the metal substrate with a chemical conversion coating film interposed between the metal substrate and the adhesive layer. This surface-treated metal sheet for polyolefin resin bonding is characterized in that a coating liquid for forming the chemical conversion coating film contains an acid-modified polyolefin resin, a colloidal silica, and a silane coupling agent; a coating amount of the chemical conversion coating film is 0.05 to 3 g/m2 in terms of dry mass; the adhesive layer contains an acid-modified polyolefin resin; and the adhesive layer has a thickness of 5 to 100 ?m.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: February 13, 2024
    Assignee: Kobe Steel, Ltd.
    Inventors: Yasuo Hirano, Takeshi Watase, Tetsuya Yamamoto
  • Patent number: 11642871
    Abstract: A surface-treated metal sheet for adhesion to polyolefin includes a metal sheet, and a resin layer provided on at least one surface of the metal sheet. The resin layer contains an acid- modified polyolefin, the acid-modified polyolefin contains a first acid-modified polyolefin having an acid value of 5 mgKOH/g or less, particularly 4 to 5 mgKOH/g, and a second acid- modified polyolefin having an acid value of 20 mgKOH/g or more and a melting point of higher than 90° C., and a difference between a melting point of the first acid-modified polyolefin and the melting point of the second acid-modified polyolefin is 0° C. or more and less than 40° C. The resin layer has a surface roughness of 12 ?m or less in terms of arithmetic average roughness Ra.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: May 9, 2023
    Assignee: Kobe Steel, Ltd.
    Inventors: Yasuo Hirano, Tatsuhiko Iwa, Tetsuya Yamamoto, Takeshi Watase
  • Patent number: 10982330
    Abstract: According to one aspect of the present invention, there is provided a chemical conversion coated metal sheet for non-condensed thermoplastic resin bonding, the chemical conversion coated metal sheet including a metal substrate and a chemical conversion coating film disposed on at least one surface of the metal substrate, in which the chemical conversion coating film is obtained by coating the metal substrate with a coating liquid that contains an ethylene-acrylic acid copolymer, colloidal silica, and a silane coupling agent. The ethylene-acrylic acid copolymer has an acrylic acid content of 10 mass % or more and a melt flow rate of 80 g/10 min or less.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: April 20, 2021
    Assignee: Kobe Steel, Ltd.
    Inventors: Yasuo Hirano, Takeshi Watase, Tetsuya Yamamoto
  • Patent number: 10399300
    Abstract: Provided are: a surface-treated metal sheet that is useful when integrating a molded plastic (resin) article and a metal sheet during injection molding; and a metal sheet-resin composite molded article in which the metal sheet and a resin molded article are integrated. The surface-treated metal sheet consists of a laminate having a metal substrate, a chemical conversion coating film and an adhesive layer in order, and is characterized in that the chemical conversion coating film contains colloidal silica and a thermosetting resin.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: September 3, 2019
    Assignee: KOBE STEEL, LTD.
    Inventors: Yasuo Hirano, Takeshi Watase, Tatsuhiko Iwa
  • Patent number: 7279218
    Abstract: Disclosed is a coated body for members of an electronic device, comprising a substrate covered, on the surface side and back side thereof, with respective thermal radiative coatings having thermal radiation property, wherein a difference ?T1 (=T1B?T1A) between Temperature T1A, at Position T1, of the coated body used as a sample and Temperature T1B, at Position T2, of the substrate not covered with a coating used as another sample is 1.5° C. or greater, said temperatures being measured using a thermal radiation property evaluating apparatus illustrated in FIG. 1; and whereby satisfying its essential properties (maintenance of air tightness to block water or dust and reduction in size and weight), while reducing the temperature inside of the members of an electronic device (thermal radiation property).
    Type: Grant
    Filed: January 23, 2004
    Date of Patent: October 9, 2007
    Assignee: Kobe Steel, Ltd.
    Inventors: Takeshi Watase, Yasuo Hirano, Kazuo Okumura, Tetsuya Yamamoto
  • Publication number: 20060182948
    Abstract: Disclosed is a resin coated metal sheet for use in electronic equipment components which can provide excellent microwave absorbability and workability by coating a magnetic coating film containing from 20 to 60 mass % of a magnetic powder at a thickness of 3 to 50 ?m on at least one surface of a metal sheet and, optionally, also has a favorable heat releasing property; a heat releasing property and a self-cooling property; scratch resistance and fingerprint resistance; and electrical conductivity, and which is particularly useful as a constituent material as a casing for electronic equipment.
    Type: Application
    Filed: July 5, 2004
    Publication date: August 17, 2006
    Applicant: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Takeshi Watase, Yasuo Hirano, Takuya Kusaka
  • Patent number: 6927243
    Abstract: The present invention relates to a photocurable resin composition which contains a photocurable component and forms on a substrate a photocurable resin layer having a viscosity of 1000-500,000 Pa·s at 23° C. and 65% RH. This resin composition is formed into a photocurable resin layer, which is laminated onto a metal sheet to give a metal sheet with a photocurable resin layer laminated thereon. This metal sheet can be worked and converted into a metal part with a high-hardness protective coating laminated thereon upon irradiation with light or electron beams after working.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: August 9, 2005
    Assignee: Kobe Steel, Ltd.
    Inventors: Takeshi Watase, Yasuo Hirano, Kazuo Okumura, Atsushi Kihara, Yukihisa Komiya, Tadashige Nakamoto, Takahiro Kobayashi, Takeshi Ohwaki, Mika Nishida, Etsuji Ueno
  • Publication number: 20050163983
    Abstract: Disclosed is a coated body for members of an electronic device, comprising a substrate covered, on the surface side and back side thereof, with respective thermal radiative coatings having thermal radiation property, wherein a difference ?T1 (=T1B?T1A) between Temperature T1A, at Position T1, of the coated body used as a sample and Temperature T1B, at Position T2, of the substrate not covered with a coating used as another sample is 1.5° C. or greater, said temperatures being measured using a thermal radiation property evaluating apparatus illustrated in FIG. 1; and whereby satisfying its essential properties (maintenance of air tightness to block water or dust and reduction in size and weight), while reducing the temperature inside of the members of an electronic device (thermal radiation property).
    Type: Application
    Filed: January 23, 2004
    Publication date: July 28, 2005
    Applicant: Kabushiki Kaisha Kobe Seiko Sho(Kobe Steel, Ltd.)
    Inventors: Takeshi Watase, Yasuo Hirano, Kazuo Okumura, Tetsuya Yamamoto
  • Patent number: 6607844
    Abstract: Provided are a Zn—Mg electroplated metal sheet excellent in corrosion resistance, formability and productivity, and a fabrication process therefor. The Zn—Mg electroplated metal sheet comprises a Zn—Mg electroplated layer including Mg and Zn, the Zn being a main component, formed on at least one surface of a metal substrate material. The Zn—Mg electroplated layer shows more excellent corrosion resistance by including a C component therein. The Zn—Mg electroplated metal sheet can be fabricated by performing electroplating with an acidic aqueous solution including metal salts of Zn and Mg, and in addition, a surface active agent.
    Type: Grant
    Filed: March 9, 2000
    Date of Patent: August 19, 2003
    Assignee: Kobe Steel, Ltd.
    Inventors: Kuniyasu Araga, Hiroo Shige, Masatoshi Iwai, Takeshi Watase, Yutaka Kitou
  • Publication number: 20030099841
    Abstract: The present invention relates to a photocurable resin composition which contains a photocurable component and forms on a substrate a photocurable resin layer having a viscosity of 1000-500,000 Pa·s at 23° C. and 65% RH. This resin composition is formed into a photocurable resin layer, which is laminated onto a metal sheet to give a metal sheet with a photocurable resin layer laminated thereon. This metal sheet can be worked and converted into a metal part with a high-hardness protective coating laminated thereon upon irradiation with light or electron beams after working.
    Type: Application
    Filed: September 16, 2002
    Publication date: May 29, 2003
    Inventors: Takeshi Watase, Yasuo Hirano, Kazuo Okumura, Atsushi Kihara, Yukihisa Komiya, Tadashige Nakamoto, Takahiro Kobayashi, Takeshi Ohwaki, Mika Nishida, Etsuji Ueno
  • Publication number: 20020160180
    Abstract: Disclosed herein is a metal sheet with anticorrosive coating which exhibits outstanding corrosion resistance, pitting corrosion resistance, and red rust resistance. It has the anticorrosive coating on at least one side thereof. The anticorrosive coating is formed from an anticorrosive paint which contains a metallic zinc powder and at least one kind of metal salt rust inhibitor. The metal salt is a salt of a metal which is more base than zinc. The metal sheet may be a steel sheet. The metal salt rust inhibitor may be a phosphate or a phosphomolybdate.
    Type: Application
    Filed: March 1, 2002
    Publication date: October 31, 2002
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd)
    Inventors: Takayuki Yamamoto, Hiroo Shige, Takeshi Watase, Masafumi Shimizu