Citizen Watch Company, Ltd.

Yosuke Sakakibara

Tsuneji Takasugi

Takao Kasai

Shotaro Shimizu

A permanent magnetic alloy mainly composed of gold for making magnetic personal ornaments comprises 50 to 75 weight % gold, 12 to 40 weight % palladium and 3 to 15 weight % cobalt. The alloy is gold or white gold in color and can be plastically deformed to a desired shape. The 12, 14 and 18 Karat gold alloys have maximum energy products of 3.0, 2.2 and 0.9 MGOe, respectively.

Permanent magnetic alloy comprising gold, platinum and cobalt

This gold solder comprises an Au-Cu-Ag-Ge alloy with 3 to 6% germanium and has a melting temperature of 800.degree. C. or below. The gold content of the gold solder is 50 to 70% equivalent to 12 to 16 Karat. The gold solder that exhibits corrosion resistance corresponding to that of materials such as a gold alloy, stainless steel, stellite and sintered carbide makes it possible to solder at 800.degree. C. or below ornamental parts made of the above materials. As a result, any surface degradation is prevented during the soldering process of mirror-polished ornamental parts.

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Higashimurayama, Japan

Yosuke Sakakibara