Fluorescent lamp having improved barrier layer
US4379981A · kind A · utility
6Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1981 |
| Grant date | Apr 12, 1983 |
| Priority date | — |
| Expiry date | Jun 4, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/35
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cost-reduced fluorescent lamp having an electrically conductive first layer carried on the inner surface of a vitreous envelope and an electrically non-conductive second layer carried on the electrically conductive first layer. The electrically non-conductive second layer is a mixture of very finely-divided aluminum oxide and finely-divided titanium dioxide in predetermined relative weight ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.