The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 20, 2003
Filed:
Aug. 31, 2000
Applicant:
Inventor:
Abraham Kerner, Herzeliah, IL;
Assignee:
Sarin Technologies Ltd., Ramat-Gan, IL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 2/100 ; G01B 1/124 ; G01B 1/130 ;
U.S. Cl.
CPC ...
G01N 2/100 ; G01B 1/124 ; G01B 1/130 ;
Abstract
A method for examining a gemstone includes the steps of coating the gemstone with a removable diffusing coating and determining the silhouette of the gemstone in three dimensions. The method further includes performing structured light triangulation by using laser light to obtain an image of the surface of the gemstone, the gemstone being transparent and/or reflective to the laser light in the absence of the coating. The method further includes the step of using the silhouette in conjunction with the image to determine the location of any recesses on the surface.