Kyocera Corporation

Fuji Electric Co., Ltd.

Octec, Inc.

Fuji Kogyo Co., Ltd.

Kazunori Takenouchi

Katsuya Okumura

Yoshikazu Takahashi

Kouichi Kijima

Mitsuhiko Koshida

Shinichi Hayashi

Kazuhito Omura

Kazuaki Takigawa

Yuki Sonoda

A fishing line guide member is formed in a ring shape, and has a curve surface curved from an inner circumferential side toward an outer circumferential side in a cross-sectional view with respect to a cross-section of the fishing line guide member taken along a cut plane including an axis line of the fishing line guide member. In an inner circumferential side part of the curve surface, Ris larger than R, in which Rdenotes a curvature radius of an axial center side part of the curve surface and Rdenotes a curvature radius of an axial end side part of the curve surface.

Fishing line guide member, and fishing line guide and fishing rod provided with the same

A semiconductor device that improves the heat cycle resistance and power cycle resistance of a power module. An electrode member in which copper posts are formed in a plurality of perforations cut in a support made of a ceramic material is soldered onto a side of an IGBT where an emitter electrode is formed. By soldering the copper posts onto the electrode, heat generated in the IGBT is transferred to the electrode member and is radiated. In addition, even if a material of which the IGBT is made and copper differ in thermal expansivity, stress on a soldered interface is reduced and distortion is reduced. This suppresses the appearance of a crack. As a result, the heat cycle resistance and power cycle resistance of a power module can be improved.

Semiconductor device

Semiconductor device, electrode member and electrode member fabrication method

An ornamental article comprises a base at least a surface portion of which comprises a transition metal selected from Group,and,elements in the periodic table or its alloy; a hard carbon film covering a surface of the base; and an intermediate layer interposed between the base and the hard carbon film and containing a carbide of the transition metal. The hard carbon film has a high adhesion strength to its base, and is superior in corrosion resistance and abrasion resistance.

Ornamental article and process for producing the same

There is Provided a decorative member having a coat of a hard carbon layer on a surface of a ceramic base, wherein the hard carbon layer has peaks in the ranges of wave numbers 1160.+-.40 cm.sup.-1, 1340.+-.40 cm.sup.-1 and 1500.+-.60 cm.sup.-1 of Raman spectra, and maximum intensity H.sub.1 of the peak residing in the range of 1160.+-.40 cm.sup.-1, maximum intensity H.sub.2 residing of 1340.+-.40 cm.sup.-1 cm.sup.-1 and maximum intensity H.sub.3 residing 1500.+-.60 cm.sup.-1 satisfy the following relations: 0.02.ltoreq.H.sub.1 /H.sub.2 .ltoreq.1.0 and H.sub.2 &lt;H.sub.3, said member showing an excellent corrosion resistance, having no oozing out of a solution of a metal causing allergy on a human body and having a required mechanical properties.

Decorative member

Growing community of inventors

Kagoshima, Japan

Kazunori Takenouchi