Tanaka Kikinzoku Kogyo K.k.

Tanaka Kikinzoku Kogoy K.k.

Kenichi Inoue

Hiroaki Takahashi

Masayuki Saito

Junichi Taniuchi

Hitoshi Kubo

Toshinori Ogashiwa

Masayuki Miyairi

Yuusuke Ohshima

Noriaki Nakamura

Tomoko Ishikawa

Yuya Sasaki

Yoshiteru Tsuchiya

Hidenori Takanezawa

Syunsuke Kato

Hirokazu Shiraishi

A sealing structure with a surface of a base material with a through-hole, an underlying metal film, and a sealing member bonded to the underlying metal film to seal the through-hole. The sealing member includes a compressed product of a metal powder including gold having a purity of 99.9% by mass or more and a lid-like metal film including a bulk-like metal including gold and having a thickness of not less than 0.01 &#x3bc;m and not more than 5 &#x3bc;m. The sealing material includes an outer periphery-side densified region in contact with an underlying metal film and a center-side porous region in contact with the through-hole. The shape of pores in the densified region is specified, and the horizontal length (l) of a pore in the radial direction at any cross-section of the densified region and the width (W) of the densified region satisfy the relationship of l&#x2264;0.1W.

Structure and method for sealing through-hole, and transfer substrate for sealing through-hole

The present invention is a metal colloid solution comprising: colloidal particles consisting of metal particles consisting of one or two or more metal(s) and a protective agent bonding to the metal particles; and a solvent as a dispersion medium of the colloidal particles, wherein: a chloride ion concentration per a metal concentration of 1 mass % is 25 ppm or less; and a nitrate ion concentration per a metal concentration of 1 mass % is 7500 ppm or less. In the present invention, adsorption performance can be improved with adjustment of the amount of the protective agent of the colloidal particles. It is preferable to bind the protective agent of 0.2 to 2.5 times the mass of the metal particles.

Metal colloidal solution and method for producing the same

The present invention relates to a method for recovering Ru complex dye from a used dye solution containing a polypyridine Ru complex as a Ru complex, the used dye solution having been discharged from a step of manufacturing a dye-sensitized solar cell, the method including the steps of:

Method for recovering Ru complex dye from used dye solution

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Hiratsuka, Japan

Kenichi Inoue