Patent · US Active

Methods, apparatus, and systems for evaluating gemstones

US7580118B2 · kind B2 · utility

6Cited by
2References
6Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 22, 2008
Grant dateAug 25, 2009
Priority date—
Expiry dateMay 22, 2028

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01N21/8806
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

Methods for grading gemstones, apparatus for grading gemstones, and systems that utilize such methods and apparatus are disclosed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.