Patents by Inventor Kaku TAKARABE

Kaku TAKARABE 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).

  • Nitride semiconductor light emitting device and method of fabricating the same
    Patent number: 9666753
    Abstract: A nitride semiconductor light emitting device includes a substrate as a base and an n-type semiconductor layer grown on a surface side of the substrate. Antimony (Sb) is added to the n-type semiconductor layer so that a molar fraction is not less than 0.1% and is less than 1%. A concentration of an n-type impurity in the n-type semiconductor layer is lower than an electron concentration.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: May 30, 2017
    Assignee: MEIJO UNIVERSITY
    Inventors: Tetsuya Takeuchi, Daisuke Komori, Kaku Takarabe, Motoaki Iwaya, Isamu Akasaki
  • NITRIDE SEMICONDUCTOR LIGHT EMITTING DEVICE AND METHOD OF FABRICATING THE SAME
    Publication number: 20160308094
    Abstract: A nitride semiconductor light emitting device includes a substrate as a base and an n-type semiconductor layer grown on a surface side of the substrate. In the device, antimony (Sb) is added to the n-type semiconductor layer so that a molar fraction is not less than 0.1%. The n-type semiconductor layer has an electron concentration of not less than 1×1018 cm?3.
    Type: Application
    Filed: April 8, 2016
    Publication date: October 20, 2016
    Applicant: MEIJO UNIVERSITY
    Inventors: Tetsuya TAKEUCHI, Daisuke KOMORI, Kaku TAKARABE, Motoaki IWAYA, Isamu AKASAKI