Patents by Inventor Toshio Okita

Toshio Okita 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).

  • Patent number: 5212700
    Abstract: A modulation circuit for controlling a light emission device to produce an intensity-modulated light signal based on an input modulation signal. The modulation circuit includes a level detector and an attenuator. The level detector produces an electrical signal corresponding to an amplitude level of the input modulation signal. The attenuator attenuates the input modulation signal based on the electrical signal, and applies the attenuated input modulation signal to said light emission device.
    Type: Grant
    Filed: July 24, 1991
    Date of Patent: May 18, 1993
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Toshio Okita
  • Patent number: D392542
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: March 24, 1998
    Assignee: Teisaku Corporation
    Inventors: Masanori Ito, Toshio Okita, Kozo Fujita