The Furukawa Electric Co., Ltd.

The Tokyo Electric Power Company, Incorporated

Sumitomo Construction Co., Ltd.

Mitsuo Miyazaki

Akira Fujisaki

Haruki Ogoshi

Shintaro Sentsui

Morinobu Mizutani

Fumiaki Arima

Masami Nomori

Katsufumi Inoue

A method of installing a seismic damping wall where the seismic damping wall is attached to the upper floor beam prior to installing the upper floor beam. A hanging plate is placed in the chamber defined by a standing structure plate. The hanging plate is temporarily attached to the standing structure plate. The top edge of the hanging plate is affixed to a horizontal structural beam that upon installation in the building will be an upper floor structural beam. The combined unit, comprising the horizontal structural beam, the hanging plate and the standing plate structure, is placed in position and the horizontal structural beam on the upper floor is installed in the building structure. The chamber is filled with a viscous liquid. The hanging plate and the standing plate structure which were temporarily fastened together are separated from each other. The standing plate structure is lowered down toward the horizontal structural beam on the lower floor. The bottom edge of the standing plate structure is fixed to the horizontal structural beam on the lower floor.

Method of installing seismic damping wall

An apparatus and method for optical telecommunication includes introducing a laser beam emitted from a light source at a first station into an optical fiber, providing an ultrasonic wave obtained by modulating a voice signal by a signal-applying-device at a work section to the optical fiber, modulating a polarized light passing through the optical fiber in amplitude and frequency, receiving the polarized light with the shifted wave plane at a light-receiving section in a second station, detecting at the light-receiving section in the second station the polarized light which has been modulated by the signal-applying device in the work section, and demodulating the polarized light to obtain a voice signal.

Method and apparatus for polarized optical telecommunications using

A technique for identifying an optical transmission medium from a plurality of single-mode-type optical transmission media by using longitudinal middle portions of the media as an identification section by first exciting a particular optical transmission media by means of a polarized light, next applying either an electromagnetic action or a mechanical action to the particular optical transmission medium to modulate the polarized light and then identifying the particular optical transmission medium based on the deviation of the polarized plane of the polarized light.

Method and apparatus for identifying an optical transmission medium

Growing community of inventors

Tokyo, Japan

Mitsuo Miyazaki