Microinscribed gemstone
US6684663B2 · kind B2 · utility
9Cited by
8References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2002 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Sep 6, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/262
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A microinscribed gemstone is inscribed by a laser beam to graphitize a surface portion of the gemstone without damaging a bulk portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.