Patents by Inventor Takeshi Utsu

Takeshi Utsu 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).

  • Single crystal scintillator
    Patent number: 5264154
    Abstract: A single crystal scintillator and apparatus for prospecting underground strata using the scintillator is described. The single crystal scintillator is a cerium doped gadolinium silicate compound of the formula:Gd.sub.2-(x+y) Ln.sub.x Ce.sub.y SiO.sub.5wherein Ln is Sc, Tb, Lu, Dy, Ho, Er, Tm, or Yb; 0.03.ltoreq.x.ltoreq.1.9; and 0.001.ltoreq.y.ltoreq.0.2.
    Type: Grant
    Filed: March 11, 1993
    Date of Patent: November 23, 1993
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Seikichi Akiyama, Hiroyuki Ishibashi, Takeshi Utsu, Charles L. Melcher, Jeffrey S. Schweitzer