Composite triangular-pyramidal cube-corner retroreflective sheeting and retroreflective articles
US7950813B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 2, 2005 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Sep 7, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/124
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Adoption of composite cube-corner retroreflective elements in which groups of each at least two sub-retroreflective elements which are each defined by three lateral faces mutually crossing at approximately right angles, as being configured by three-directional V-shaped parallel groove groups having substantially symmetrical sections and intersecting with each other, and which are arrayed in the closest-packed state, projecting on one side of their common sub-plane (SH-SH), each of said groups of sub-reflective elements being disposed on one main retroreflective element which is defined by three lateral faces mutually crossing at approximately right angles, as being configured by three-directional V-shaped parallel groove groups having substantially symmetrical sections and intersecting with each other, and which is disposed on the main plane (S-S).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.