Inorganic sheet carrying symbols for making pigments
US6673420B1 · kind B1 · utility
5Cited by
15References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2001 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Feb 20, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24942
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Inorganic sheets (10) of at least two surperposed layers are provided with one or more symbols (20) which have a size of between 1 and 10 &mgr;m. The inorganic sheet is made up into pigment flakes (15). The symbols on the pigment flakes (15) allow a tracing of compositions such as printing inks or paintings and of substrates carrying such compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.