Idemitsu Kosan Company, Limited

Kddi Corporation

Nihon Dengyo Kosaku Co., Ltd.

Katsuyoshi Hoshino

Tetsuo Saji

Hiroshi Kokado

Seiichiro Yokoyama

Hiroki Hagiwara

Akira Maruyama

Yoko Kurosawa

Kazuhiro Gosui

A film antennato which the present invention is applied includes: an antenna partin which a dual-frequency antennaand an antenna GND sectionare formed; a feeding boardto which a coaxial cablefor feeding the antenna partis connected; and a pressing memberwhich, together with the feeding board, sandwiches a contact point, coated with silver paste, of the antenna part, and electrically connects the contact pointand the feeding boardto one another.

Flexible printed circuit board structure and indoor partition wall

A process for producing a thin film comprising electrotreating a dispersion or solution obtained by dispersing or dissolving a hydrophobic substance powder in an aqueous medium with a surfactant having a HLB value of 10.0 to 20.0, under conditions for forming a thin film of the hydrophobic substance on a cathode. The thin film of a hydrophobic substance can be formed on base metals such as aluminum, which can be applied to photosensitive materials and the like.

Process for producing thin films

By electrotreating a dispersion or solution obtained by dispersing or dissolving hydrophobic substance powder in aqueous medium with the use of surfactant having a HLB value of 10.0 to 20.0, under the conditions for forming the thin film of said hydrophobic substance on the cathode, thin films of hydrophobic substance is formed on the cathode. In this way thin films of hydrophobic substance can be formed on base metals such as aluminum, which can be applied to photosensitive materials and the like.

Novel ferrocene derivatives represented by the general formula: ##STR1## or the general formula: ##STR2## or the general formula: ##STR3## (wherein all the symbols are as described in the specification) are excellent as surfactants. By application of an electrochemical method using the novel ferrocene derivatives or other ferrocene derivatives as a micelle forming agent (surfactant), an organic thin film of a hydrophobic organic substance can be efficiently produced.

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Tokyo, Japan

Katsuyoshi Hoshino