Ink composition comprising optically variable pigments, use of the composition, optically variable pigment and method of treating said pigment
US7381758B2 · kind B2 · utility
18Cited by
14References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2002 |
| Grant date | Jun 3, 2008 |
| Priority date | — |
| Expiry date | Aug 25, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to passivated optically variable pigment, a method of preparing said passivated optically variable pigment, an ink composition comprising said passivated optically variable pigment, the use of said ink composition, and a document carrying a marking made with said ink composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.