Patents by Inventor Masaru FUJIYOSHI

Masaru FUJIYOSHI 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: 20240026503
    Abstract: Along with higher performance of products, materials are also required to achieve both a high strength and favorable magnetic properties according to applications of products. Therefore, the present invention provides an Fe—Co-based alloy bar which enables both a high strength and favorable magnetic properties to be achieved. An Fe—Co-based alloy bar contains 30% to 80% of crystal grains having a grain orientation spread (GOS) value of 0.5° or more in terms of an area ratio, and having an average crystal grain size number of more than 8.5 and 12.0 or less. The Fe—Co-based alloy bar of the present invention has a high 0.2% yield strength after magnetic annealing so that it can support various high-strength applications.
    Type: Application
    Filed: September 14, 2021
    Publication date: January 25, 2024
    Applicant: Proterial, Ltd.
    Inventors: Daiki Kato, Hidetaka Yakabe, Masaru Fujiyoshi, Shujiroh Uesaka, Shinsuke Sasabe
  • Publication number: 20230416881
    Abstract: The present invention provides an Fe—Co-based alloy bar which enables excellent magnetic properties to be reliably obtained. In the Fe—Co-based alloy bar, an area ratio of crystal grains having a grain orientation spread (GOS) value of 0.5° or more exceeds 80%, and the difference between an area ratio of crystal grains having a GOS value of 0.5° or more observed in a cross section in a direction perpendicular to an axis of the bar and an area ratio of crystal grains having a GOS value of 0.5° or more observed in a cross section in an axial direction of the bar is within 10%. Preferably, the average crystal grain size number is 6.0 or more and 8.5 or less.
    Type: Application
    Filed: September 14, 2021
    Publication date: December 28, 2023
    Applicant: Proterial, Ltd.
    Inventors: Masaru Fujiyoshi, Shujiroh Uesaka, Kouji Kobayashi
  • Publication number: 20230349028
    Abstract: An Fe—Co-based alloy bar and a method for manufacturing same, whereby excellent magnetic properties can be reliably obtained. The method for manufacturing an Fe—Co-based alloy bar comprises a heating straightening step for applying tensile stress to a hot-rolled material of an Fe—Co-based alloy while heating the hot-rolled material to a temperature of 500-900° C. Preferably, ohmic heating is used as a heating means in the heating straightening step. In addition, the Fe—Co-based alloy bar has 20% or more by area ratio of crystal grains having a grain orientation spread (GOS) value of at least 0.5°.
    Type: Application
    Filed: March 10, 2021
    Publication date: November 2, 2023
    Applicant: Proterial, Ltd.
    Inventors: Masaru FUJIYOSHI, Shujiroh UESAKA, Kouji KOBAYASHI
  • Patent number: 10696589
    Abstract: This glass bonding material (21) is made of a cladding material (1) in which at least a first layer (11) made of an Al-based alloy and configured to be bonded to glass and a second layer (12) made of an Fe—Ni based alloy having a thermal expansion coefficient from 30° C. to 400° C. of 11.5×10?6 (K?1) or less are bonded.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: June 30, 2020
    Assignee: HITACHI METALS, LTD.
    Inventors: Masayuki Yokota, Ryoji Inoue, Yoshiharu Tsuboi, Masaharu Yamamoto, Masaru Fujiyoshi, Naruaki Tomita, Kouji Kawahara
  • Publication number: 20170283318
    Abstract: This glass bonding material (21) is made of a cladding material (1) in which at least a first layer (11) made of an Al-based alloy and configured to be bonded to glass and a second layer (12) made of an Fe—Ni based alloy having a thermal expansion coefficient from 30° C. to 400° C. of 11.5×10?6 (K?1) or less are bonded.
    Type: Application
    Filed: May 23, 2017
    Publication date: October 5, 2017
    Applicant: HITACHI METALS, LTD.
    Inventors: Masayuki Yokota, Ryoji Inoue, Yoshiharu Tsuboi, Masaharu Yamamoto, Masaru Fujiyoshi, Naruaki Tomita, Kouji Kawahara
  • Patent number: 9500720
    Abstract: A semi-hard magnetic material that is formed with equal to or more than 5.0% but less than 13.0% of Ni by mass, equal to or more than 0.5% but equal to or less than 4.0% of Mn by mass, more than 0% but equal to or less than 3.0% of Al by mass, more than 0% but equal to or less than 1.0% of Ti by mass and a remainder of Fe and an impurity, that has a coercivity of 1000 to 2400 A/m and that has a residual magnetic flux density of 1.3 T or more. A method of manufacturing the above semi-hard magnetic material wherein the material is a thin plate having a thickness of 0.030 to 0.30 mm and, after a cold rolling, performing an aging treatment on the thin plate at a temperature of 520° C. to 680° C.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: November 22, 2016
    Assignee: HITACHI METALS, LTD.
    Inventors: Masaru Fujiyoshi, Shin-ichiro Yokoyama
  • Publication number: 20140232385
    Abstract: A semi-hard magnetic material that is formed with equal to or more than 5.0% but less than 13.0% of Ni by mass, equal to or more than 0.5% but equal to or less than 4.0% of Mn by mass, more than 0% but equal to or less than 3.0% of Al by mass, more than 0% but equal to or less than 1.0% of Ti by mass and a remainder of Fe and an impurity, that has a coercivity of 1000 to 2400 A/m and that has a residual magnetic flux density of 1.3 T or more. A method of manufacturing the above semi-hard magnetic material wherein the material is a thin plate having a thickness of 0.030 to 0.30 mm and, after a cold rolling, performing an aging treatment on the thin plate at a temperature of 520° C. to 680° C.
    Type: Application
    Filed: August 17, 2012
    Publication date: August 21, 2014
    Applicant: HITACHI METALS, LTD.
    Inventors: Masaru Fujiyoshi, Shin-ichiro Yokoyama
  • Publication number: 20100189594
    Abstract: Disclosed is a Pb-free solder alloy consisting of, in mass %, 0.1-1.5% of Ag, 0.5-0.75% of Cu, Ni in an amount satisfying 12.5?Cu/Ni?100, and the balance of Sn and unavoidable impurities. The solder alloy preferably contains, in mass %, 0.3-1.2% of Ag and 0.01-0.04% of Ni. Also disclosed is a solder ball obtained by spheroidizing the solder alloy. In addition, the solder alloy is suitable for a solder joint onto an Ni electrode. The solder alloy has excellent drop impact resistance, while being suppressed in decrease of joining strength under high temperature conditions for a long time.
    Type: Application
    Filed: January 15, 2007
    Publication date: July 29, 2010
    Applicant: HITACHI METALS, LTD.
    Inventors: Masaru Fujiyoshi, Masayoshi Date
  • Publication number: 20070128068
    Abstract: A solder alloy is provided, which consists of, by mass %: 0.6 to 0.75% of Cu; 0.3 to 1.5% of Ag; more than 0.01% but not more than 0.1% of Ge; and the balance being Sn and incidental impurities. Preferably an amount of Ag is 0.5 to 1 mass % Preferably, an amount of Ge is more than 0.01 mass % but not more than 0.06 mass %. The solder alloy is preferably spherically formed into a solder ball. A solder joint in which the solder alloy is joined to a Ni electrode is also provided.
    Type: Application
    Filed: November 13, 2006
    Publication date: June 7, 2007
    Applicant: HITACHI METALS, LTD.
    Inventors: Masayoshi DATE, Masaru FUJIYOSHI