Patents by Inventor Ryouhei Uchida

Ryouhei Uchida 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 member superior in corrosion resistance
    Patent number: 6846451
    Abstract: There is provided a magnesium alloy containing mass percent Al: 5% to 7%, Ca: 2% to 4%, Mn: 0.1% to 0.8%, Sr: 0.001% to 0.05% and rare earth elements: 0.1% to 0.6%. If necessary, an allowable content is set in each of Si, Zn, Cu, Ni, Fe and Cl of the unavoidable impurities, with Si not higher than mass percent 0.01%, Zn not higher than mass percent 0.01%, Cu not higher than mass percent 0.008%, Ni not higher than mass percent 0.001%, Fe not higher than mass percent 0.004%, and Cl not higher than mass percent 0.003%. There is also provided a magnesium alloy member injected in the die by using such an alloy.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: January 25, 2005
    Assignee: The Japan Steel Works, Ltd.
    Inventors: Ryouhei Uchida, Kenzi Yamada, Makoto Matsuyama, Tadayoshi Tsukeda
  • Magnesium alloys excellent in fluidity and materials thereof
    Patent number: 6582533
    Abstract: Magnesium alloys containing, by mass percent, Al: 10.0 to 13.0%, Si: 0.3 to 1.5%, Mn: 0.1 to 1.0%, and, if desired, Zn: less than 0.8%, the rest being Mg and unavoidable impurities. Neither cracking by the casting is invited nor the mechanical property is spoiled, and the fluidity can be notably improved, and it is possible to make products small in thickness and light in weight.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: June 24, 2003
    Assignee: The Japan Steel Works, Ltd.
    Inventors: Tadayoshi Tukeda, Akihiro Maehara, Katsuhiko Nuibe, Ryouhei Uchida
  • Magnesium alloy and magnesium alloy member superior in corrosion resistance
    Publication number: 20030039575
    Abstract: There is provided a magnesium alloy containing mass percent Al: 5% to 7%, Ca: 2% to 4%, Mn: 0.1% to 0.8%, Sr: 0.001% to 0.05% and rare earth elements: 0.1% to 0.6%. If necessary, an allowable content is set in each of Si, Zn, Cu, Ni, Fe and Cl of the unavoidable impurities, with Si not higher than mass percent 0.01%, Zn not higher than mass percent 0.01%, Cu not higher than mass percent 0.008%, Ni not higher than mass percent 0.001%, Fe not higher than mass percent 0.004%, and Cl not higher than mass percent 0.003%. There is also provided a magnesium alloy member injected in the die by using such an alloy.
    Type: Application
    Filed: April 16, 2002
    Publication date: February 27, 2003
    Applicant: THE JAPAN STEEL WORKS, LTD.
    Inventors: Ryouhei Uchida, Kenzi Yamada, Makoto Matsuyama, Tadayoshi Tsukeda
  • Magnesium alloys excellent in fluidity and materials thereof
    Publication number: 20010026768
    Abstract: Magnesium alloys containing, by mass percent, Al: 10.0 to 13.0%, Si: 0.3 to 1.5%, Mn: 0.1 to 1.0%, and, if desired, Zn: less than 0.8%, the rest being Mg and unavoidable impurities. Neither cracking by the casting is invited nor the mechanical property is spoiled, and the fluidity can be notably improved, and it is possible to make products small in thickness and light in weight.
    Type: Application
    Filed: February 7, 2001
    Publication date: October 4, 2001
    Inventors: Tadayoshi Tukeda, Akihiro Maehara, Katsuhiko Nuibe, Ryouhei Uchida