US2004000575A1PendingUtilityA1

Method for marking gemstones with a unique micro discrete indicia

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Priority: Dec 21, 2001Filed: Jun 26, 2003Published: Jan 1, 2004
Est. expiryDec 21, 2021(expired)· nominal 20-yr term from priority
Inventors:David L. PattonJohn P. Spoonhower
B44C 1/228A44C 17/00B41M 5/26B41M 5/262B44B 7/00B44F 1/10G09F 3/00
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Claims

Abstract

A method for providing and reading micro-discrete indicia on a gemstone using near-field optics.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A gemstone having a micro-discrete indicia formed thereon wherein said micro-discrete indicia image was formed using near-field optics.  
     
     
         2 . A gemstone according to  claim 2  wherein said near-field optics produces said micro-discrete indicia by ablation of an image on the surface of said gemstone.  
     
     
         3 . A gemstone according to  claim 2  wherein said micro-discrete indicia is produced using color center production techniques.  
     
     
         4 . A method according to  claim 2  wherein in said micro-discrete indicia is provided at a predetermined coordinates on said gemstone.  
     
     
         5 . A gemstone according to  claim 2  wherein said micro-discrete indicia provides information with regard to said gemstone.  
     
     
         6 . A method according to  claim 5  wherein said information comprises any of the following: 
 size, type, manufacturer, retailer, owner, producer, country of origin, mine etc.

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