Patents by Inventor Jyunpei Sakurai

Jyunpei Sakurai 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).

  • Corrosion and heat resistant metal alloy for molding die and a die therewith
    Patent number: 8298354
    Abstract: It is found that alloys including amorphous phase comprising at least a first element selected from the group consisting of Pt and Ru, at least a second element selected from the group consisting of Zr, Hf, Si, Ir, Ru, Pd and Ni, and at least a third element selected from the group consisting of Si, Cu, Cr, Fe, Mo, Co, Al, Zr, Hf, Ni and Ru have excellent machining characteristics, heat-resistant characteristics, corrosion resistance and adhesion resistance. Using the alloys as the molding surface of a die, a heat resistant molding die for forming glass optical device having fine structure for performing high definite functions became possible to manufacture with excellent machining characteristics.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: October 30, 2012
    Assignee: Tokyo Institute of Technology
    Inventors: Seiichi Hata, Jyunpei Sakurai, Akira Shimokohbe, Shigeru Hosoe, Hiroyuki Nabeta
  • CORROSION AND HEAT RESISTANT METAL ALLOY FOR MOLDING DIE AND A DIE THEREWITH
    Publication number: 20090236494
    Abstract: It is found that alloys including amorphous phase comprising at least a first element selected from the group consisting of Pt and Ru, at least a second element selected from the group consisting of Zr, Hf, Si, Ir, Ru, Pd and Ni, and at least a third element selected from the group consisting of Si, Cu, Cr, Fe, Mo, Co, Al, Zr, Hf, Ni and Ru have excellent machining characteristics, heat-resistant characteristics, corrosion resistance and adhesion resistance. Using the alloys as the molding surface of a die, a heat resistant molding die for forming glass optical device having fine structure for performing high definite functions became possible to manufacture with excellent machining characteristics.
    Type: Application
    Filed: October 18, 2006
    Publication date: September 24, 2009
    Inventors: Seiichi Hata, Jyunpei Sakurai, Akira Shimokohbe, Shigeru Hosoe, Hiroyuki Nabeta