Mitsui Chemicals, Inc.

Kunihiro Inada

Mitsunobu Yoshida

Nobuhiro Maruko

Hiroshi Watanabe

Youhei Suzuki

Takehiko Omi

Yasuyuki Kawano

Toshiya Urakawa

An antenna core produced by shaping a soft magnetic metal powder with the use of a resin as a binder, wherein the soft magnetic metal powder is an amorphous soft magnetic metal powder or a nanocrystal-containing amorphous soft magnetic metal powder, of the general formula (1): (FeCoNi)SiBM(1), and wherein the resin as a binder is a thermosetting resin. In the formula, M is at least one element selected from the group consisting of Nb, Mo, Zr, W, Ta, Hf, Ti, V, Cr, Mn, Y, Pd, Ru, Ga, Ge, C, P, Al, Cu, Au, Ag, Sn and Sb. Each of x and y is an atomic ratio and each of a, b and c an atomic %, satisfying the relationships: 0&#x2266;x&#x2266;1.0, 0&#x2266;y&#x2266;0.5, 0&#x2266;x+y&#x2266;1.0, 0&#x2266;a&#x2266;24, 1&#x2266;b&#x2266;30, 0&#x2266;c&#x2266;30 and 2&#x2266;a+b&#x2266;30.

Antenna core and antenna

A circuit board comprising a resin molded article which includes a metal powder coated by an insulation film and a metal conductor which is formed by metal deposition over a circuit pattern drawn by laser beam irradiation on the surface of the resin molded article through electroless plating, and the method of producing the same.

Circuit board and method of producing the same

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Sodegaura, Japan

Kunihiro Inada