Retroreflective articles with multiple size prisms in multiple locations
US6139158A · kind A · utility
20Cited by
28References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1997 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Aug 12, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Retroreflective sheeting and articles are formed in which the size of the retroreflective and non-retroreflective surfaces may be varied across an array of microprisms. This is accomplished by varying the location of the reflective coating applied to the microprism side facets, such that, some prism side facets are completely coated with reflective material while others are coated only at the apex area; and still others are coated with a non-reflective coatings, such as, a colored adhesive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.