Patents by Inventor Fusao Azuma

Fusao Azuma 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).

  • Equipment for facsimile call service of telephone exchange
    Patent number: 5898763
    Abstract: An equipment for facsimile call service of a telephone exchange which can apply an unique charging system to a facsimile call by distinguishing the facsimile call from ordinary speech calls, notify a caller of cause when occurring a failure in transmitting the facsimile call, and advise the caller on the way to eliminate the cause.
    Type: Grant
    Filed: July 3, 1997
    Date of Patent: April 27, 1999
    Assignee: Kokusai Denshin Denwa Kabushiki Kaisha
    Inventors: Fusao Azuma, Noriko Kawamura, Teruo Ohno, Makoto Hibara