Additive for YAG laser marking
US6693657B2 · kind B2 · utility
30Cited by
10References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2001 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | Apr 12, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/60
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A calcined powder of co-precipitated mixed oxides of tin and antimony is used as a YAG laser marking additive. The additive is designed to impart little to no color to the plastic in which it is incorporated but to provide a high contrast dark marking after being exposed to a YAG laser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.