申请日期 | 2025-06-26 | 申请号 | US11021566 |
公开(公告)号 | US20060140830A1 | 公开(公告)日 | 2006-06-29 |
公开国别 | US | 申请人省市代码 | 全国 |
申请人 | Janardhanan Sreeram Kalarical; Balachandran Unni Nair; Ramasami Thirumalachari | ||
简介 | The present invention provides a novel process for preparation of inorganic colourants from mixed rare earth compounds, which are directly obtained from the ore industry, without undergoing any separation, thereby enabling a cost reduction to the extend of 10-100 times. Colors ranging from brown, blue and green can be obtained by suitable doping with other metal ions. |
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