发明授权
US07249471B2 Cut design of diamonds providing plenty of visual-perceptible reflection for ornamental use and observation method thereof
失效
切割钻石的设计，为观赏用途和观察方法提供了大量的视觉感知反射
- 专利标题： Cut design of diamonds providing plenty of visual-perceptible reflection for ornamental use and observation method thereof
- 专利标题（中）： 切割钻石的设计，为观赏用途和观察方法提供了大量的视觉感知反射
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申请号： US11087917申请日： 2005-03-23
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公开(公告)号： US07249471B2公开(公告)日： 2007-07-31
- 发明人: Yoshinori Kawabuchi , Tamotsu Matsumura
- 申请人： Yoshinori Kawabuchi , Tamotsu Matsumura
- 申请人地址： JP
- 专利权人： Hohoemi Brains, Inc.
- 当前专利权人： Hohoemi Brains, Inc.
- 当前专利权人地址： JP
- 代理机构： McGlew and Tuttle P.C
- 优先权： JP2002-041319 20020219; JP2002-253011 20020830
- 主分类号： A44C17/00
- IPC分类号： A44C17/00
摘要：
A cut design of an ornamental diamond and an observation method of the diamond which an observer can perceive a more beauty, are disclosed. The cut design is a round brilliant cut comprising a girdle, a crown above the girdle and a pavilion below the girdle. A girdle height (h) is 0.026 to 0.3 times a girdle radius, a pavilion angle (p) of a pavilion main facet ranges from 37.5 degrees to 41 degrees, and a crown angle (c) of a crown main facet is within a range of satisfying: c>−2.8667×p+134.233 and p
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