专利检索 ap:("DE BEERS INDUSTRIAL DIAMONDS (PROPRIETARY) LIMITED" OR "Spits, Raymond Anthony") AND inv:"FISHER, David" 第 1 页

1.

发明公开
HIGH TEMPERATURE/HIGH PRESSURE COLOUR CHANGE OF DIAMOND 有权
标题翻译：钻石的高温/高压力FARBEVERÄNDERNG

公开(公告)号：EP1272264A1

公开(公告)日：2003-01-08

申请号：EP01917362.4

申请日：2001-04-02

申请人： DE BEERS INDUSTRIAL DIAMONDS (PROPRIETARY) LIMITED , Spits, Raymond Anthony

发明人： BURNS, Robert, Charles , FISHER, David , Spits Raymond Anthony

IPC分类号： B01J3/06

CPC分类号： C30B29/04 , B01J3/062 , B01J2203/062 , B01J2203/0655 , B01J2203/0695 , C01B32/28 , C30B33/00

摘要： A method is provided for changing the colour of a brown type IIa diamond from brown to pink. The method involves subjecting the diamond to selected conditions of elevated temperature and elevated pressure to produce the colour change.

2.

发明公开
HIGH TEMPERATURE/HIGH PRESSURE COLOUR CHANGE OF DIAMOND 有权
标题翻译：钻石的高温/高压换色

公开(公告)号：EP1272266A1

公开(公告)日：2003-01-08

申请号：EP01921695.1

申请日：2001-04-02

申请人： DE BEERS INDUSTRIAL DIAMONDS (PROPRIETARY) LIMITED

发明人： BURNS, Robert, Charles , FISHER, David , SPITS, Raymond, Anthony

IPC分类号： B01J3/06

CPC分类号： B01J3/062 , B01J2203/062 , B01J2203/0655 , B01J2203/0695

摘要： The invention provides a method of changing a grey type IIb diamond from grey to blue or enhancing the colour of a type IIb diamond. Selected conditions of high temperature and high pressure are used to produce the colour change.