发明公开
- 专利标题： HIGH TEMPERATURE/HIGH PRESSURE COLOUR CHANGE OF DIAMOND
- 专利标题（中）： 金刚石的高温/高压变色
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申请号： EP01917364.0申请日： 2001-04-02
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公开(公告)号： EP1272265A1公开(公告)日： 2003-01-08
- 发明人: BURNS, Robert, Charles , FISHER, David , SPITS, Raymond, Anthony
- 申请人： DE BEERS INDUSTRIAL DIAMOND DIVISION (PROPRIETARY) LIMITED
- 申请人地址： Seo Building,Corner Crownwood & Booysens Reserve Roads,Theta Johannesburg 2001 ZA
- 专利权人： DE BEERS INDUSTRIAL DIAMOND DIVISION (PROPRIETARY) LIMITED
- 当前专利权人： DE BEERS INDUSTRIAL DIAMOND DIVISION (PROPRIETARY) LIMITED
- 当前专利权人地址： Seo Building,Corner Crownwood & Booysens Reserve Roads,Theta Johannesburg 2001 ZA
- 代理机构： Lyndon-Stanford, Edward Willoughby Brooke
- 优先权： GB0007889 20000331; GB0009488 20000417
- 国际公布： WO01072406 20011004
- 主分类号： B01J3/06
- IPC分类号： B01J3/06
摘要：
A method is provided for changing the colour of a brown type IIa diamond from brown to colourless. The method involves subjecting the diamond to selected conditions of elevated temperature and elevated pressure to produce the colour change.
公开/授权文献
- EP1272265B1 HIGH TEMPERATURE/HIGH PRESSURE COLOUR CHANGE OF DIAMOND 公开/授权日：2006-10-04
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