Low visibility laser marking additive
US7187396B2 · kind B2 · utility
40Cited by
32References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2004 |
| Grant date | Mar 6, 2007 |
| Priority date | — |
| Expiry date | Nov 19, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/951
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Laser marking of plastic material is achieved by incorporating into the plastic a laser marking particulate additive having a particle size of less than 100 nm. A mixed oxide particle of tin and antimony having a particle size of 10–70 nm is useful as a laser marking additive when using a YAG laser. A metallic powder can further be added to improve marking contrast.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.