The Furukawa Electric Co., Ltd.

Keiji Mashimo

Masanori Ozaki

Yukihiro Saita

A shape characteristic extractor decomposes and extracts typical shapes where element division is easy from shape data that indicates the shape of an object. An analysis mesh data generator generates analysis mesh data (element dividing information) for each of the decomposed and extracted shapes. Thus, the element dividing information can be generated even if the object has a complicated shape. Moreover, the element dividing information can be generated accurately and speedily.

Method and apparatus generating analysis mesh data, and computer product

A heat pipe circuit board comprising: a heat pipe; at least one insulating layer; a circuit pattern provided on a surface of or inside the at least one insulating layer; and electronic components being mounted on the heat pipe through the insulating layer. The heat pipe is formed by jointing two plate members by friction stir welding, at least one of the two plate members being provided with a recess portion which is a fluid channel of a working fluid.

Heat pipe circuit board

Electric contact materials, production methods thereof and electric

The present invention provides inexpensive electric contact materials having higher hardness and higher melting point and being more excellent in the points of wear resistance and environmental resistance over the electric contact materials of Ag type, Au type, platinum group type, etc. having been used so far, production methods thereof and electric contacts used said contact materials. In the electric contact materials of the invention, basically, a covering layer having at least one selected from transition metals of groups IVa (Ti, Zr, Hf, etc.), Va (V, Nb, Ta, etc.) and VIa (Cr, Mo, W, etc.) as a major ingredient is formed on the substrate as an electric contact in a thickness of 0.03 to 100 .mu.m, and, if need be, a fixed intermediate layer is formed between said covering layer of electric contact and substrate or a fixed surface layer is formed on the outside of covering layer of electric contact, thus aiming at further improvement in the characteristics of contact. Such covering layer of electric contact can be formed by chemical vaporization or physical vaporization such as plasma CVD, sputtering, ion assist vaporization, ion plating, laser beam sputtering or the like and, by making the conditions of these vaporizations appropriate, it is possible to produce the electric contact materials having excellent characteristics of contact.

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Tokyo, Japan

Keiji Mashimo