Alkali-free aluminosilicate glasses, suitable as substrate for induction heating cooktops applications
US10219328B2 · kind B2 · utility
2Cited by
9References
11Claims
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Key dates
| Filing date | Jul 8, 2014 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Jul 8, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/74
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Aluminosilicate glasses whose composition is free of alkali metals and contain, as a weight percentage of oxides, 60 to 70% SiO2, 13 to 22% Al2O3, 0 to 9% B2O3, 1 to 6% MgO, 0 to 5% CaO, 1 to 5% BaO, 2 to 12% ZnO, and 0 to 3% SrO, wherein Al2O3+B2O3+ZnO>23% and B2O3+MgO−CaO−BaO−SrO<6%. The glasses exhibit a low coefficient of thermal expansion (CTE) and strong acid and alkali durabilities, and may be used in substrates for induction cooktops.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.