Polarizing glasses having integral non-polarizing regions
US6171762A · kind A · utility
13Cited by
19References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 1999 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | May 21, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2214/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Polarizing glass having localized regions or patterns of non-polarizing glass is disclosed. The glass is formed by use of reducing gas-blocking material, by local thermal heating of the glass, or by an etching technique.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.