Japan Atomic Energy Research Institute

Nitto-Denko Corporation

Japan Atomic Energy Agency

Mitsubishi Denki Kabushiki Kaisha

Hitachi Cable, Inc.

Yousuke Morita

Masaru Yoshida

Yozo Nagai

Masaharu Asano

Toshimitsu Tachibana

Tetsuya Yamaki

Soji Nishiyama

Hajime Akiyama

Miyuki Hagiwara

Hideki Yagyu

Tadao Seguchi

Osamu Mochizuki

Takeshi Ohshima

Masahito Yoshikawa

Waichiro Kawakami

Ryuichi Tanaka

Toshiaki Yagi

Kenichi Honda

Seiji Kamimura

Takao Onishi

Takuji Kojima

Polymer ion-exchange membranes having outstanding electrical conductivity, water retention and oxidation resistance are produced by the steps of uniformly mixing an organic high-molecular weight resin with functional inorganics having the abilities to promote graft polymerization of polymerizable monomers, adsorb water and conduct protons, irradiating the resulting functional inorganics/polymer membrane to initiate graft polymerization or graft copolymerization of polymerizable monomers having functional groups, and then introducing sulfonic acid groups into the graft chains.

Process or producing hybrid ion-exchange membranes comprising functional inorganics and graft polymer and electrolyte membranes for use in fuel cells comprising the hybrid ion-exchange membranes

Process for producing hybrid ion-exchange membranes comprising functional inorganics and graft polymer and electrolyte membranes for use in fuel cells comprising the hybrid ion-exchange membranes

A thyris a thyristor is provided in which a lifetime of a minority carrier is controlled to improve the trade-off relationship between an ON-state voltage and a turn-off time and attain a high frequency and a low loss. Shielding members formed of metal plates are provided respectively in spaces above a plane on which a cathode electrode is provided and a plane on which an anode electrode is provided.

Thyristor manufacturing method and thyristor

This invention relates to a method or apparatus by which comparatively low-voltage electric wires and cables laid at power stations and other locations can be diagnosed for deterioration of their polymer-insulation in a non-destructive way. The method or apparatus comprises applying a torsional force to the electric wire or cable, detecting the resulting repulsion as a torque, and estimating the degree of deterioration of the polymer-insulation in the electric wire or cable on the basis of the detected value of torque.

Method of diagnosing electric wires and cables for deterioration of

An alanine dosimeter that enables accurate and simple measurement of the absorbed dose of an ionizing radiation is disclosed. The dosimeter uses as an alanine binder agent at least one member selected from among synthetic rubbers, and natural rubber.

Molded dosimeter containing a rubber and powdered crystalline alanine

A flame-retardant and radiation-resistant polymer composition comprising a polymer and a halogenated acenaphthylene condensate having a structural unit of the formula (I) or (II): ##STR1## (wherein X is chlorine or bromine, n and n' are each an integer of 2 to 6, R is a substituent other than halogen, m and m' are each an integer of 0 to 4, n (or N')+m(or m').ltoreq.6, and when m or m' is 2 or more, each R may be the same or different) and a flame-retardant and radiation-resistant resin molded product prepared therefrom are herein disclosed.

Flame-retardant and radiation-resistant polymer composition and a resin

Growing community of inventors

Gunma, Japan

Yousuke Morita