Glass article strengthened by ion exchange substitution
US4273832A · kind A · utility
6Cited by
11References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 4, 1980 |
| Grant date | Jun 16, 1981 |
| Priority date | — |
| Expiry date | Feb 4, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/315
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A sodium lime silicate type glass body strengthened by substituting potassium ions for sodium ions in a surface layer of the glass by spraying an aqueous solution of potassium ions and from 1 to 6 weight percent of sodium ions upon the glass at a temperature of from about 200.degree. C. to just below the annealing point of the glass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.