Ultraviolet absorbing green tinted glass
US5385872A · kind A · utility
148Cited by
12References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1992 |
| Grant date | Jan 31, 1995 |
| Priority date | — |
| Expiry date | Mar 26, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C4/085
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A green tinted, ultraviolet absorbing glass is disclosed having a standard soda-lime-silica base glass composition and a colorant portion consisting essentially of on a weight basis: less than 2.0% total CeO.sub.2, V.sub.2 O.sub.5, TiO.sub.2 or MoO.sub.3 and greater than 0.7% total iron (expressed as Fe.sub.2 O.sub.3) with the ratio of FeO/total iron less than 0.35. The glass reduces the amount of costly cerium required to yield low ultraviolet transmittance, viz., no greater than 31 percent (300 to 390 nanometers) at a reference thickness of 3.9 millimeters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.