Patents by Inventor Katsuhiro Kamakura

Katsuhiro Kamakura 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).

  • Optical communication system
    Patent number: 7139483
    Abstract: An optical communication system is formed by connecting a base station to user stations. Each user station has a transmitting section for upstream communication. The base station has a light source which supplies transmission light used for upstream communication.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: November 21, 2006
    Assignees: Sumitomo Electric Industries, Ltd., Keio University
    Inventors: Toru Murase, Masayuki Shigematsu, Iwao Sasase, Katsuhiro Kamakura
  • Optical communication system
    Publication number: 20040081461
    Abstract: An optical communication system is formed by connecting a base station to user stations. Each user station has a transmitting section for upstream communication. The base station has a light source which supplies transmission light used for upstream communication.
    Type: Application
    Filed: March 27, 2003
    Publication date: April 29, 2004
    Inventors: Toru Murase, Masayuki Shigematsu, Iwao Sasase, Katsuhiro Kamakura