Fireproof glass windowpanes
US3984252A · kind A · utility
25Cited by
10References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 13, 1974 |
| Grant date | Oct 5, 1976 |
| Priority date | — |
| Expiry date | Sep 13, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/315
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Fireproof glass, or glass ceramic in a form suitable for use as windowpanes, which will withstand heating in accordance with DIN (German Industrial Norm) 4102 (1970 edition), standard temperature curve I, and having a compressive prestress in the peripheral portion thereof. The glass, or glass ceramic is such that the product of the thermal expansion coefficient, .alpha., and the modulus of elasticity, E, is 1 to 5 kp .times. cm.sup..sup.-2 .times. .degree.C.sup..sup.-1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.