PH control of leachable mercury in fluorescent lamps
US5736813A · kind A · utility
12Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1996 |
| Grant date | Apr 7, 1998 |
| Priority date | — |
| Expiry date | Nov 29, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/72
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The formation of leachable mercury upon disposal or during TCLP testing of mercury vapor discharge lamps is substantially prevented by incorporation of a pH control agent in the lamp structure or in the test solution to provide a pH of about 5.5 to about 6.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.