Patents by Inventor Akihiko Honda

Akihiko Honda 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).

  • Second harmonic generation element and a process for producing the same
    Patent number: 5737117
    Abstract: A second harmonic generation element including a single crystal substrate having a fundamental composition of K.sub.3 Li.sub.2-2x (Nb.sub.1-y Ta.sub.y).sub.5+5z O.sub.15-x+12.5z and an optical waveguide made of an epitaxial film with a fundamental composition of K.sub.3 Li.sub.2-2a (Nb.sub.1-b Ta.sub.b).sub.5+5c O.sub.15-a+12.5c and refractive index different from that of the single crystal substrate, wherein:-0.5.ltoreq.a, x.ltoreq.0.6250.ltoreq.b, y.ltoreq.0.50.8.ltoreq.(5-2x)/(5+5z), (5-2a)/(5+5c).ltoreq.1.2.
    Type: Grant
    Filed: April 5, 1996
    Date of Patent: April 7, 1998
    Assignee: NGK Insulators, Ltd.
    Inventors: Minoru Imaeda, Katsuhiro Imai, Tatsuo Kawaguchi, Takashi Yoshino, Akihiko Honda
  • Single crystal growing method
    Patent number: 5690734
    Abstract: A process is disclosed for continuously producing a single crystal by drawing downwardly a melt of a single crystal raw material, wherein a single crystal body grown from the melt is continuously pulled downwardly, and a plurality of single crystal products are continuously formed by intermittently cutting the single crystal body being downwardly moved.
    Type: Grant
    Filed: March 19, 1996
    Date of Patent: November 25, 1997
    Assignee: NGK Insulators, Ltd.
    Inventors: Minoru Imaeda, Akihiko Honda, Katsuhiro Imai, Yuichiro Imanishi, Nobuyuki Kokune, Shoji Sogo, Kazuaki Yamaguchi, Tetsuo Taniuchi