Patents by Inventor Masaki Kajita

Masaki Kajita 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).

  • Epitaxial wafer of compound semiconductor display device
    Patent number: 4510515
    Abstract: An epitaxial wafer of a compound semiconductor comprising a single crystalline semiconductor substrate consisting of GaP and an active layer consisting of GaAs.sub.1-x P.sub.x, having a mixed crystal ratio (x) in the range of from 0.5 to 1 is used for an LED. According to the present invention, between the single crystalline semiconductor substrate and the active layer, a light-absorbing layer consisting of GaAs.sub.1-x P.sub.x having the mixed crystal ratio (x) smaller than that of the active layer, is formed to suppress the reflection of light from the surface of the substrate.
    Type: Grant
    Filed: February 10, 1984
    Date of Patent: April 9, 1985
    Assignees: Stanley Electric Co., Ltd., Mitsubishi Monsanto Chemical Co., Ltd.
    Inventors: Masaki Kajita, Tomio Nakaya, Shinichi Hasegawa, Hisanori Fujita