Highly transparent, edge colored glass
US5030594A · kind A · utility
131Cited by
6References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1990 |
| Grant date | Jul 9, 1991 |
| Priority date | — |
| Expiry date | Jun 29, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/57
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A clear glass, with the substantial absence of color in transmittance, and with an attractive, bright, pure azure edge coloration is achieved in a glass having greater than 87 percent, preferably greater than 90 percent, luminous transmittance by using very small amounts of iron oxide as the sole essential colorant, with the ratio of iron in the ferrous state to total iron being at least 0.4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.