Colored glassware
US4116704A · kind A · utility
8Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1978 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Feb 6, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C1/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This invention is concerned with the production of transparent glass articles exhibiting an integral light gray-brown hue. More particularly, this invention is drawn to specific borosilicate-based glass compositions containing critically-defined amounts of Co.sub.3 O.sub.4, NiO, and MnO.sub.2 as colorants therefor. The resulting glasses exhibit a specifically-delineated transmittance curve in the visible portion of the radiation spectrum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.