Method for making retroreflective articles having polymer multilayer reflective coatings
US6224219A · kind A · utility
18Cited by
47References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2000 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | Apr 10, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for making retroreflective articles that have a layer of optical elements and a multilayer reflective coating disposed on the optical elements. The reflective coating reflects light back into the optical elements so that it can be returned toward the light source. The multilayer reflective coating has at least one polymer layer made by condensing a curing a pre-polymer vapor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.