Patent · US Active

Gemstone with a chaton cut

US10271621B2 · kind B2 · utility

0Cited by

4References

20Claims

0Family size

Assignee

D. Swarovski KG · AT

Inventors

Maik Froehlich · Kundl, AT
Karlheinz Eder · Jenbach, AT
Guenther Blasbichler · Innsbruck, AT
Markus Sauer · Mils, AT

Key dates

Filing date	Mar 5, 2012
Grant date	Apr 30, 2019
Priority date	—
Expiry date	Mar 5, 2032

Classification

Technology area (CPC A)Human Necessities
CPC primaryA44C17/007
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A gemstone with a chaton cut has tapering facets of a crown adjoin a flat table all the way round inclined relative to the table. The facets extend as far as a rondist at which the gemstone has the largest transverse dimension. A pavilion of facets, preferably terminating at a point, adjoins below the rondist. The gemstone is at least partially made of glass, and the crown angle (α) is between 40.5° and 42.5°.

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