Magnetic assemblies and processes for producing optical effect layers comprising oriented non-spherical magnetic or magnetizable pigment particles
US10850305B2 · kind B2 · utility
1Cited by
13References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2016 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Oct 11, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/42
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to the field of magnetic assemblies and processes for producing optical effect layers (OEL) comprising magnetically oriented non-spherical magnetic or magnetizable pigment particles on a substrate. In particular, the present invention relates magnetic assemblies and processes for producing said OELs as anti-counterfeit means on security documents or security articles or for decorative purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.