Method for producing a highly refractive composite gemstone, and product
US8056363B1 · kind B1 · utility
0Cited by
23References
36Claims
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Key dates
| Filing date | Jun 16, 2008 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Sep 15, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S427/103
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for providing a protective coating and enhanced optical qualities to a gemstone. The method includes coating a first portion and a second portion of a gemstone with TiO2 doped with calcium oxide (TiO2+). The TiO2+ coated gemstone is next coated with a diamond like carbon (DLC) coating. The gemstone may be synthetic or natural. The composite gemstone, having been coated with both TiO2 and DLC, exhibits high refractivity and enhanced wear resistance and color.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.