Tinted glassware
US4273586A · kind A · utility
7Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1980 |
| Grant date | Jun 16, 1981 |
| Priority date | — |
| Expiry date | Jun 23, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C1/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This invention is directed to transparent glass which, after thermal tempering demonstrates a tint defined by C.I.E. chromaticity coordinates and transmission utilizing Illuminant C of PA1 x=0.3300.+-.0.0040 PA1 y=0.3360.+-.0.0040 PA1 Y=60.8.+-.4 The glass consists essentially, in weight percent on the oxide basis, of ______________________________________ SiO.sub.2 75 .+-.2.0 Na.sub.2 O 13.45 .+-. 0.5 Al.sub.2 O.sub.3 165 .+-. 0.2 CaO 9.6 .+-. 0.3 As.sub.2 O.sub.3 0.15 .+-. 0.1 NiO 0.03 .+-. 0.005 with Cr.sub.2 O.sub.3 0.002 .+-. 0.0005 or CuO 0.005 .+-. 0.002 ______________________________________
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.