Kureha Kagaku Kogyo Kabushiki Kaisha

Kureha Chemical Industry Company, Limited

Mushima Paper Co., Ltd.

Nobuo Maruyama

Yasuo Sakaguchi

Yoichi Shibata

Teruaki Sekine

Masao Takasu

Ippei Kato

A microtiter plate is made of a light-transmitting antistatic resin and defines at least one well. The bottom wall of the well is centrally equipped with a flat portion having a diameter of at least 1 mm and is preferably connected continuously to the corresponding peripheral wall by way of a rising part. The minimum radius of curvature of the inner wall of said well, said inner wall including said rising part, is preferably at least 0.5 mm.

Microtiter plate

A process for producing an electroconductive film having a volume resistivity of fiber oriented direction of not more than 1.times.10.sup.8 ohm cm comprising mixing from 94.5% to 40% volume of a thermoplastic synthetic pulp with from 5% to 30% by volume of thermoplastic composite fibers comprising of a first component having a lower melting point than that of said thermoplastic synthetic pulp and a second component having a higher melting point than that of said thermoplastic synthetic pulp, and from 0.5% to 30% by volume of electroconductive fibers to prepare a paper stock; forming a wet web from the paper stock; heating and drying said wet web at a specific first temperature to melt the first component of the composite fibers, thereby forming a base paper; and thereafter heating said base paper under pressure at a specific second temperature to melt the thermoplastic synthetic pulp, thereby forming a film having dispersed said second component and said electroconductive fibers therein.

Process for producing electroconductive films

Casting mold for metals, wherein paper-like sheet of carbon or graphite fibers is lined onto the inner surface of the mold to prevent seizure phenomenon between the mold and the cast article.

Casting mold for metals

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Tokyo, Japan

Nobuo Maruyama