Frits and obscuration enamels for automotive applications
US7560401B2 · kind B2 · utility
3Cited by
84References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2007 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Apr 20, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2204/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Frits, obscuration enamel compositions including frits and automotive windshields having obscuration enamel compositions applied thereto are described. According to one or more embodiments, the obscuration enamel composition comprises a paste component and a frit component having Bi2O3, SiO2 and B2O3 and being substantially free of Na2O. In other embodiments, a reducing agent is included in the frit component. Obscuration enamels of some embodiments have a total solids content of at least 80% by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.