Patents by Inventor Hidekatsu Onose

Hidekatsu Onose 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).

  • Semiconductor device for control of light
    Patent number: 5107307
    Abstract: A semiconductor optical modulator is provided wherein very thin films of two kinds of semiconductors having different band gaps are laminated alternately to form a multi-quantum well (MQW) structure, also called a super-lattice structure, and current is injected into the MQW structure to change the corresponding optical absorption and refractive index characteristic thereof so that a sufficient on/off ratio can be obtained.
    Type: Grant
    Filed: August 7, 1991
    Date of Patent: April 21, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Hidekatsu Onose, Michio Ohue, Masayoshi Naito