Patents by Inventor Tadayuki Fujji

Tadayuki Fujji 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).

  • Oriented molybdenum or tungsten single crystal and manufacturing method thereof
    Patent number: 5916363
    Abstract: Secondary recrystallized grains having a plurality of crystal orientations in a polycrystalline compact of molybdenum or tungsten, which contains at least one element selected from the group consisting of calcium and magnesium in amount of 0.007 to 0.090 atom %, are formed by locally heating an end portion(s) of the polycrystalline compact. Some grains, which have a prescribed crystal orientation, selected from these secondary recrystallized grains are subsequently grown in the whole polycrystalline compact by annealing.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: June 29, 1999
    Assignee: National Research Institute for Metals
    Inventors: Tadayuki Fujji, Kinichi Honda