Patents by Inventor Nobuyoshi Horigome

Nobuyoshi Horigome 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).

  • Photodetector module for coupling with optical fiber
    Patent number: 5065011
    Abstract: A photodetector module comprising an optical fiber and a photodetector which are coupled by direct optical coupling is disclosed. A photodetector chip is fixedly attached to the circular top surface, having the shape of a circle circumscribed around the photodetector chip, of a carrier having the shape of a frustum of a circular cone, or the photodetector chip is fixedly attached to the circular bottom surface, having the shape of a circle circumscribed around the photodetector chip, of a circular recess formed in the bottom of a taper recess formed in the carrier and having the shape of a frustum of a circular cone. Such a combination of the photodetector chip and the carrier enables the omission of the positional adjustments of the photodetector chip on the carrier with respect to the X-axis and the Y-axis.
    Type: Grant
    Filed: July 18, 1990
    Date of Patent: November 12, 1991
    Assignee: Fujitsu Limited
    Inventors: Makoto Fujihara, Nobuyoshi Horigome, Kaoru Moriya, Akira Okamoto, Kenji Tagawa, Gan Oda