EP 1376654 A1 20040102 - Control of leachable mercury in fluorescent lamps
Title (en)
Control of leachable mercury in fluorescent lamps
Title (de)
Kontrolle von löslichem Quecksilber in Leuchtstoffröhren
Title (fr)
Contrôle du mercure soluble dans lampes fluorescentes
Publication
Application
Priority
- US 17557202 A 20020619
- US 17491202 A 20020619
Abstract (en)
A method for inhibiting mercury from leaching from a mercury vapor discharge lamp wherein at least a part of said mercury is present as ionic mercury comprises including within a lamp a quantity of SnO2, said quantity corresponding preferably to a density of about 40 micrograms/liter; and further including within the lamp an amount of oxidizable iron, the amount of iron being at least 1 gram per kilogram of lamp weight.
IPC 1-7
IPC 8 full level
H01J 61/72 (2006.01)
CPC (source: EP)
H01J 61/72 (2013.01)
Citation (search report)
- [AD] US 5998927 A 19991207 - FOUST DONALD FRANKLIN [US], et al
- [A] US 5898265 A 19990427 - WOODWARD DAVID R [US], et al
- [A] US 5229687 A 19930720 - FOWLER RICHARD A [US], et al
- [A] US 5751110 A 19980512 - SPAAPEN ANTONIUS J [NL], et al
- [A] PATENT ABSTRACTS OF JAPAN vol. 010, no. 113 (E - 399) 26 April 1986 (1986-04-26)
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
EP 1376654 A1 20040102; EP 1376654 B1 20050406; DE 60300468 D1 20050512; DE 60300468 T2 20060504
DOCDB simple family (application)
EP 03013718 A 20030617; DE 60300468 T 20030617