Coating processes – Direct application of electrical – magnetic – wave – or... – Ion plating or implantation
Reexamination Certificate
2005-02-28
2009-10-20
Padgett, Marianne L (Department: 1792)
Coating processes
Direct application of electrical, magnetic, wave, or...
Ion plating or implantation
C427S530000, C427S377000, C427S294000
Reexamination Certificate
active
07604846
ABSTRACT:
The present invention relates to a manufacturing method of colored diamond and, more particularly, to a manufacturing method of colored diamond by ion implantation and heat treatment. The manufacturing method comprises a first step of implanting ions to the surface of diamond by accelerating the ions under vacuum, and a second step of heat-treating the implanted diamond. By implanting ions inducing the change in the optical band gap of a diamond, the manufacturing method provides a colored diamond with relatively lower cost compared to a metal ion implantation in the prior art, and a uniform color is obtained by heat treatment. Additionally, the manufacturing method of the present invention provides a diamond having various colors with permanent color development effects, by controlling the condition of ion implantation and heat treatment.
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translation of previously cited/provided KR 2004023447 A to S.B. Hong & O.S. Song (on translation Song et al., note above citation in foreign documents is to correct previously incorrect document No. on the Jun. 26, 2008 PTO-892).
Choi Byung-ho
Lee Jae-hyung
Park Jaewon
Sohn Changwon
Bachman & LaPointe P.C.
Korea Atomic Energy Research Institute
Padgett Marianne L
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