Patents by Inventor Takao Tomiya

Takao Tomiya 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).

  • Composite plating material and method for producing the same
    Patent number: 11926917
    Abstract: There is provided a composite plating material and a related technique thereof, the composite plating material including: a base material, and a composite plating layer on the base material, the composite plating layer comprising a composite material containing carbon particles and Sb in an Ag layer, with a carbon content of 6.0 mass % or more and a Sb content of 0.5 mass % or more.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: March 12, 2024
    Assignee: DOWA METALTECH CO., LTD.
    Inventors: Yukiya Kato, Hirotaka Kotani, Tatsuhiro Doi, Takao Tomiya, Hiroto Narieda
  • Composite plated product and method for producing same
    Patent number: 11920255
    Abstract: There are provided a composite plated product wherein a composite plating film of a composite material containing carbon particles in a silver layer is formed on a base material and wherein the amount of the carbon particles dropped out of the composite plating film is small, and a method for producing the same. After a composite plating film of a composite material containing carbon particles in a silver layer is formed on a base material (of preferably copper or a copper alloy) by electroplating using a silver-plating solution to which the carbon particles are added, a treatment for removing part of the carbon particles on the surface thereof is carried out.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: March 5, 2024
    Assignee: Dowa Metaltech Co., Ltd.
    Inventors: Hirotaka Kotani, Yukiya Kato, Tatsuhiro Doi, Takao Tomiya, Hiroto Narieda
  • COMPOSITE MATERIAL, METHOD FOR PRODUCING COMPOSITE MATERIAL, AND TERMINAL
    Publication number: 20230175160
    Abstract: A composite material including a composite film formed on a base material, the composite film including a silver layer containing carbon particles, wherein a content of Sb in the composite film is 1 mass % or less, and a crystallite size of silver in the composite film is 40 nm or less.
    Type: Application
    Filed: April 21, 2021
    Publication date: June 8, 2023
    Applicant: DOWA METALTECH CO., LTD.
    Inventors: Yukiya KATO, Hirotaka TAKAHASHI, Tatsuhiro DOI, Hirotaka KOTANI, Takao TOMIYA, Hiroto NARIEDA
  • COMPOSITE PLATING MATERIAL AND METHOD FOR PRODUCING THE SAME
    Publication number: 20230046780
    Abstract: There is provided a composite plating material and a related technique thereof, the composite plating material including: a base material, and a composite plating layer on the base material, the composite plating layer comprising a composite material containing carbon particles and Sb in an Ag layer, with a carbon content of 6.0 mass % or more and a Sb content of 0.5 mass % or more.
    Type: Application
    Filed: June 10, 2020
    Publication date: February 16, 2023
    Applicant: DOWA METALTECH CO., LTD.
    Inventors: Yukiya KATO, Hirotaka KOTANI, Tatsuhiro DOI, Takao TOMIYA, Hiroto NARIEDA
  • COMPOSITE PLATED PRODUCT AND METHOD FOR PRODUCING SAME
    Publication number: 20220259753
    Abstract: There are provided a composite plated product wherein a composite plating film of a composite material containing carbon particles in a silver layer is formed on a base material and wherein the amount of the carbon particles dropped out of the composite plating film is small, and a method for producing the same. After a composite plating film of a composite material containing carbon particles in a silver layer is formed on a base material (of preferably copper or a copper alloy) by electroplating using a silver-plating solution to which the carbon particles are added, a treatment for removing part of the carbon particles on the surface thereof is carried out.
    Type: Application
    Filed: June 4, 2020
    Publication date: August 18, 2022
    Applicant: Dowa Metaltech Co., Ltd.
    Inventors: Hirotaka Kotani, Yukiya Kato, Tatsuhiro Doi, Takao Tomiya, Hiroto Narieda
  • Tin-plated product and method for producing same
    Patent number: 10985485
    Abstract: There are provided a tin-plated product which has a zinc plating layer on the surface thereof and which has good corrosion resistance and good adhesion of the zinc plating even if the connecting portion of a terminal of the tin-plated product to an electric wire of aluminum or an aluminum alloy is not processed during press fitting such as swaging (or caulking) when the tin-plated product is used as the material of the terminal which is to be connected to the electric wire by press fitting, and a method for producing the same.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: April 20, 2021
    Assignee: DOWA METALTECH CO., LTD.
    Inventors: Hiroto Narieda, Yuta Sonoda, Tatsuhiro Doi, Takao Tomiya
  • TIN-PLATED PRODUCT AND METHOD FOR PRODUCING SAME
    Publication number: 20200076103
    Abstract: There are provided a tin-plated product which has a zinc plating layer on the surface thereof and which has good corrosion resistance and good adhesion of the zinc plating even if the connecting portion of a terminal of the tin-plated product to an electric wire of aluminum or an aluminum alloy is not processed during press fitting such as swaging (or caulking) when the tin-plated product is used as the material of the terminal which is to be connected to the electric wire by press fitting, and a method for producing the same.
    Type: Application
    Filed: November 21, 2017
    Publication date: March 5, 2020
    Applicant: Dowa Metaltech Co., Ltd.
    Inventors: Hiroto Narieda, Yuta Sonoda, Tatsuhiro Doi, Takao Tomiya