Microinscribed gemstone

Details Microinscribed gemstone Microinscribed gemstone

2006-03-14

2006-03-14

Evans, Geoffrey S. (Department: 1725)

Jewelry

Gem

Reexamination Certificate

active

07010938

ABSTRACT:
A microinscribed gemstone such as a diamond is inscribed by a laser beam to graphitize a surface portion of the gemstone without damaging a bulk portion.

REFERENCES:
patent: 3803379 (1974-04-01), McRay
patent: 4354196 (1982-10-01), Neumann et al.
patent: 4392476 (1983-07-01), Gresser et al.
patent: 4985780 (1991-01-01), Garnier et al.
patent: 5149938 (1992-09-01), Winston et al.
patent: 5225650 (1993-07-01), Babel et al.
patent: 5379102 (1995-01-01), Takeuchi
patent: 5410125 (1995-04-01), Winston et al.
patent: 6684663 (2004-02-01), Kaplan et al.

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