Nippon Paint Compnay, Ltd.

Uniden Corporation

K. Laboratory Co., Ltd.

Mitsuyuki Oda

Toshihiro Okai

Takashi Yamamoto

Yoshiaki Okumura

Koji Nakamura

Kazunori Kanda

Teruaki Kuwajima

Yoshihiro Konishi

Hideo Fukuda

Shoichi Iida

Masato Morimoto

Masahiro Jinnouti

Hideki Komori

A housing for electronic apparatus which is effectively protected against electromagnetic wave leakage, the housing being equipped or lined, in an area of the conductive layer-carrying inside surface of the housing, the area adjoining, or is in the vicinity of, an opening of the housing, with a sheet molded, to a thickness of 70 to 300 .mu.m, from a magnetic material-containing resin composition comprising 7 to 60% by weight of a binder resin (a) and 40 to 93% by weight of a finely divided magnetic material (b) having a magnetic loss term, and a method of damping unwanted radiation of electromagnetic waves.

Housing for electronic apparatus and method of damping unwanted

The present invention provides a thin wide bandwidth electromagnetic wave absorbing material capable of absorbing electromagnetic waves in both the semi-microwave band and the semi-millimeter and millimeter wave band. The present electromagnetic wave absorbing material comprises: a first layer composed of a conductive material; a second layer comprising a particle of a metal oxide magnetic material and a matrix of a binder, being applied on the first layer; and a third layer comprising a particle of a metal magnetic material and a matrix of a binder, being applied on the second layer.

Wide bandwidth electromagnetic wave absorbing material

As for an electric apparatus having a case formed of electro-magnetic wave passing-through material, in order to provide an electro-magnetic wave shielding structure being capable to effectively prevent the leakage therefrom of an electro-magnetic wave generated therein, an electro-magnetic wave reflecting layer, namely, a conductive layer is formed on an inner face of the case and further, on a surface of the conductive layer, a magnetically losing layer containing Mn--Mg--Zn group soft ferrite particles having 1 to 20 .mu.m average diameter by 70 to 90 weight % at a thickness exceeding 80 .mu.m is formed, so as to repeatedly absorb the inner generated undesired electro-magnetic wave therein through repeated reflection between the conductive layer and the absorbing layer.

Electronic apparatus case having an electro-magnetic wave shielding

Disclosed is a corrosion preventive coating composition comprising;

Corrosion preventive coating composition

Disclosed is a corrosion preventive pigment consisting essentially of

Corrosion preventive pigment comprising a phosphate source, a vanadium

Disclosed is a metal particle having a maximum dimension of not more than 1 mm surface-treated with an aqueous solution containing phosphate ions, soluble ions of vanadium and oxygen. This particle can be a metallic pigment having excellent brightness retention and wetting properties to a binder resin.

Aluminum flake pigment

There is herein provided a coating composition for controlling hydrogen embrittlement of a steel which contains 1 to 500 percent by weight of a metal oxide selected from the group consisting of manganese dioxide, vanadium pentoxide and molybdenum trioxide based on 100 percent by weight of resin solids.

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Kyoto, Japan

Mitsuyuki Oda