Lead-free glasses
US6184166A · kind A · utility
4Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1999 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Jul 16, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C4/0028
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This invention relates to lead-free silicate glasses that find use in producing fine crystal glassware and in laminated ware applications. The glasses consist essentially, in weight percent, of: SiO.sub.2 52-66 ZnO 15-30 Al.sub.2 O.sub.3 0-4 BaO 0-7 Li.sub.2 O 0-4 MgO + CaO + SrO 0-4 Na.sub.2 O 3-16 ZrO.sub.2 0-4 K.sub.2 O 0-12 B.sub.2 O.sub.3 0-4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.