Patents by Inventor Hiroya Akatsuka

Hiroya Akatsuka 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).

  • Magnesium alloy and magnesium-alloy cast product
    Patent number: 9180515
    Abstract: A magnesium alloy according to the present invention comprises: Al in an amount of from 2 to 6%; Ca in an amount making a compositional ratio (i.e., Ca/Al) being from 0.5 to 1.5; Mn in an amount of from 0.1 to 0.7%; strontium (Sr) in an amount of from 1 to 6%; and the balance being magnesium (Mg), and inevitable impurities and/or a modifying element; when the entirety is taken as 100% by mass. By means of this setting, Mg alloys, which are also good in terms of high-temperature characteristics, such as creep resistance and heat conductivity, in addition to ordinary-temperature characteristics, are obtained.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: November 10, 2015
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuki Okamoto, Kyoichi Kinoshita, Motoharu Tanizawa, Hiroya Akatsuka
  • MAGNESIUM ALLOY AND MAGNESIUM-ALLOY CAST PRODUCT
    Publication number: 20110220251
    Abstract: A magnesium alloy according to the present invention comprises: Al in an amount of from 2 to 6%; Ca in an amount making a compositional ratio (i.e., Ca/Al) being from 0.5 to 1.5; Mn in an amount of from 0.1 to 0.7%; strontium (Sr) in an amount of from 1 to 6%; and the balance being magnesium (Mg), and inevitable impurities and/or a modifying element; when the entirety is taken as 100% by mass. By means of this setting, Mg alloys, which are also good in terms of high-temperature characteristics, such as creep resistance and heat conductivity, in addition to ordinary-temperature characteristics, are obtained.
    Type: Application
    Filed: November 6, 2009
    Publication date: September 15, 2011
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuki Okamoto, Kyoichi Kinoshita, Motoharu Tanizawa, Hiroya Akatsuka