High refractive index coatings and their use in the protection of surface relief structures
US10328737B2 · kind B2 · utility
5Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2011 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Feb 6, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/256
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
High refractive index coatings having metal oxide particles are disclosed. Dispersions of metal oxide particles in solvent are also disclosed. These find use in the protection of surface relief structures. In some disclosed embodiments, the coatings or dispersions contain UV-curable resins. The coatings and dispersions find application in the field of security devices and documents and tokens incorporating security devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.