Fuji Electric Co., Ltd.

Mitsubishi Gas Chemical Company, Inc.

Toshiba Samsung Storage Technology Corporation

Nei Canada Limited

Miwa Electric, Co. Ltd.

Takashi Ishii

Kazuo Mukae

Koichi Tsuda

Ikuo Nagasawa

Noriyuki Kato

Munenori Shiratake

Yoshio Nishimura

Hirohito Ishizuka

Toyoshige Sakaguchi

Hiroshi Kimura

Kiyoshi Yoshida

Toshiyuki Matsui

Tetsuo Koshitsuka

Akihiko Ohi

Kentarou Ishihara

Takeshi Suzuki

Eiko Kuwabara

Mitsuhiro Iwama

Kunio Omi

Tsuneo Suzuki

Kouzou Ohno

Hidehiro Tanaka

The polycarbonate resin of the present invention has a structural unit represented by general formula (A): (in formula (A), X is an alkylene group having 1 to 4 carbon atoms).

Polycarbonate resin, production method therefor, and optical molded body

Provided is a thermoplastic resin having a high refractive index, which is favorable as an optical material. Provided are a polyformal resin copolymer comprising a high refractive index diol that has a fluorene skeleton and an aromatic diol that has a low glass-transition point when polymerized, and a method for producing the same.

Polyformal resin copolymer and method for producing the same

Provided is a process for producing bleached pulp, including subjecting unbleached pulp, which is obtained by cooking a lignocellulose substance, to alkali-oxygen bleaching treatment and then subjecting the alkali-oxygen bleached pulp to chlorine-free bleaching treatment including chlorine dioxide treatment, wherein in at least one chlorine dioxide treatment stage in which the chlorine dioxide treatment is performed, monopersulfuric acid is used in combination. The amount of chlorine dioxide to be used is reduced and the color reversion resistance of the bleached pulp is improved by this process.

Process for production of bleached pulp

An optical disc device includes a conductive member of a bezel assembly with openings formed by a plurality of parting lines, and gaskets are attached to the upper and lower sides of the conductive member using conductive adhesion bond.

Optical disc device

A superconducting transistor with superior withstand voltage having source region and a drain region formed of oxide superconductors 3, a PrBa.sub.2 Cu.sub.3 O.sub.7-x layer 2 or an ScBa.sub.2 Cu.sub.3 O.sub.7-x layer 2 forming an intermediate region sandwiched by the source and drain regions. The regions are disposed on a substrate 1. An insulation layer 4 is disposed on the intermediate region. A transistor uses the intermediate region as an insulator when the gate is turned off, and as a superconductor when the gate is turned on.

Superconducting FET with Pr-Ba-Cu-O channel

A method of producing a voltage nonlinear ZnO varistor in which seed grains of ZnO are produced by spray drying a slurry of ZnO particles and then sintering the dried slurry to form seed grains having a size of 10 to 100.mu.m. The seed grains are mixed with a ZnO powder of particles of much smaller size than the seed grains and a small amount of an auxiliary component. The mixture is then molded and sintered to form the varistor element to which electrodes are attached.

Method of producing a voltage-nonlinear resistor

An electromagnetic display or indicator element comprises a disc having a permanent magnet perpendicular to the disc's rotary axis. The disc is controlled by a single high remanence pole piece which has its forward end transversely (relative to the viewing direction) located relative to the disc to exert the main control on the magnet therein and its rearward end located rearwardly of the center of the disc.

Electromagnetic display

A surge absorber of a construction having a voltage non-linear resistive element composed of an oxide, a pair of electrodes attached to both surfaces of the resistive element, a lead wire connected to one of the electrodes, and a terminal plate fastened to the other electrode and having a plurality of fitting holes formed in one part thereof, the combination of the resistive element, the electrodes, and a part of the terminal plate and the lead wire being covered with a resin coating layer.

Surge absorber

Voltage non-linear resistance ceramics

Ceramics having nonlinear voltage characteristics in which (1) zinc oxide is used as a main component and (2) praseodymium, (3) one or more of magnesium or calcium, and (4) cobalt are added thereto as subcomponents, in elemental form or as a compound thereof, in an amount of from about 0.08 to about 10.0 atomic % for praseodymium, from about 0.08 to about 10.0 atomic % for the one or more of magnesium or calcium, and from about 0.1 to about 8.0 atomic % for the cobalt, each calculated as praseodymium, magnesium or calcium and cobalt.

Ceramics having nonlinear voltage characteristics

Growing community of inventors

Kanagawa, Japan

Takashi Ishii