High entrance angle retroreflective article and method of making
US5880885A · kind A · utility
19Cited by
18References
42Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1996 |
| Grant date | Mar 9, 1999 |
| Priority date | — |
| Expiry date | Jun 27, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/124
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Retroreflective article that provides effective retroreflective brightness at very high entrance angles as well as low entrance angles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.