Patents by Inventor Masando Tozawa

Masando Tozawa 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).

  • Optoelectronic device
    Patent number: 5408559
    Abstract: In a transmitting and receiving optoelectronic device, a wave-separating filter (16) is disposed at a position deviated from 45.degree. with respect to the optical axis of transmission light (6), or the internal wall surface of a light passage hole (15A) of a support (15) is inclined with respect to the optical axis of the transmission light (5). In another arrangement, a light-transmitting optical unit (1) and a wave-separating optical unit (13) are provided as separate units, and optical-axis adjustment is performed with only the light-transmitting optical unit (1).
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: April 18, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Shoichi Takahashi, Masando Tozawa, Atsushi Sasayama, Yoshihiko Kobayashi, Hideo Taguchi