Optically variable multilayer structure on flexible web
US5281480A · kind A · utility
35Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1992 |
| Grant date | Jan 25, 1994 |
| Priority date | — |
| Expiry date | Jun 22, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Articles and methods for forming optically variable thin film flakes and replicated coatings having preselected optical properties. The articles generally comprise a flexible web of material and an optically variable thin film coating formed on one surface of the web. The optically variable coating is separated from the web to form optically variable thin film flakes. The flakes are disposed in ink and paint vehicles to provide optically variable inks, paints and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.