Anisotropic magnetic flakes
US9662925B2 · kind B2 · utility
35Cited by
36References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2008 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Aug 21, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2982
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to anisotropic, reflective, magnetic flakes. In a liquid carrier and under influence of an external magnetic field, the flakes attract to one another side-by-side and form ribbons which provide higher reflectivity to a coating and may be used as a security feature for authentication of an object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.