Ultraviolet absorbing, green tinted glass
US5240886A · kind A · utility
199Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1990 |
| Grant date | Aug 31, 1993 |
| Priority date | — |
| Expiry date | Jul 30, 2010 |
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: ______________________________________ CeO.sub.2 Less than 0.5 weight % Total iron Greater than 0.85 weight % (as Fe.sub.2 O.sub.3) FeO/total iron Less than 0.275. ______________________________________ 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.