发明名称 |
Platinum alloy jewellery wire |
摘要 |
This invention relates to fabricating wire and particularly wire at least the surface of which consists of platinum or a platinum-based alloy for use in the jewellery industry. The wire according to the invention comprises a first portion at least the outer surface of which consists essentially of platinum or a platinum-based alloy and a second portion in the form of a coating or layer on the outer surface of the first portion, the second portion consisting essentially of a metal or alloy which is soft relative to the platinum or platinum-based alloy. Preferably, the second portion consists essentially of copper.
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申请公布号 |
US4246322(A) |
申请公布日期 |
1981.01.20 |
申请号 |
US19790010546 |
申请日期 |
1979.02.08 |
申请人 |
JOHNSON, MATTHEY & CO., LIMITED |
发明人 |
WALL, JOHN E.;LLOYD, ERNEST E. |
分类号 |
A44C25/00;A44C11/00;A44C27/00;B21C37/04;B32B15/01;(IPC1-7):B32B15/02 |
主分类号 |
A44C25/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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