Retroreflective elements
US5750191A · kind A · utility
39Cited by
49References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1995 |
| Grant date | May 12, 1998 |
| Priority date | — |
| Expiry date | Jul 18, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/128
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A process and retroreflective elements are provided. The process of preparing a retroreflective element includes the steps of (a) combining a bed of optical elements and one or more core elements comprising a thermoplastic material; and (b) agitating the combination of optical elements and core elements for a sufficient period of time and at a sufficient temperature to coat the optical elements onto the core elements to form retroreflective elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.