Patents by Inventor Takashi Matsudo

Takashi Matsudo 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).

  • Publication number: 20030057029
    Abstract: Disclosed herein is a building equipment managing method using a history database for recording the conditions of building equipment, a display device installed in public spaces of a building, and an input device installed in the public spaces of the building for inputting a request for the indication of necessary information, the method comprising the steps of: recording a change in a condition of the building equipment in the history database; and in response to receiving a request for indicating a content which is recorded in the history database from the input device, indicating on the display device the content which is recorded in the history database.
    Type: Application
    Filed: September 24, 2002
    Publication date: March 27, 2003
    Inventors: Atsuya Fujino, Toshihiko Hatakeyama, Seiji Kawanishi, Yoshio Matsuzaki, Takashi Matsudo, Osamu Dohi, Isamu Mutou, Hiroshi Nagase
  • Patent number: 5493436
    Abstract: A system for communicating between mobile units and an exchange station, with a radio frequency signal, in which an electric signal from a telephone exchange of the telephone station is converted into an optical signal with an electricity-to-light converter. The optical signal is carried via an optical fiber cable to a transmission communication antenna for emission, with amplification of the optical signal if necessary. The emitted signal is received by a receiving communication antenna, amplified with an optical amplifier if necessary, and converted to an electric signal with a light-to-electricity converter.
    Type: Grant
    Filed: March 21, 1995
    Date of Patent: February 20, 1996
    Assignee: Kokusai Denshin Denwa Company, Limited
    Inventors: Yoshio Karasawa, Takashi Matsudo, Hisato Iwai, Takayasu Shiokawa