Patents by Inventor Tsuneyuki Kaise, deceased

Tsuneyuki Kaise, deceased 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).

  • GaAsP epitaxial wafer and a method for manufacturing it
    Patent number: 6048397
    Abstract: A GaAsP epitaxial wafer 10 which has a GaAs.sub.1-x P.sub.x (0.45<x<1) constant nitrogen concentration layer 6 formed by doping a constant composition layer with nitrogen wherein the constant nitrogen concentration layer 6 has the following upper and lower limits of nitrogen concentration:Upper limit: N=(6.25x-1.125).times.10.sup.18 cm.sup.-3Lower limit: N=(5x-1.5).times.10.sup.18 cm.sup.
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: April 11, 2000
    Assignee: Shin-Etsu Handotai Co., Ltd.
    Inventors: Masahisa Endo, Masataka Watanabe, Tsuneyuki Kaise, deceased