A METHOD FOR PROLONGING THE LIFE OF A GAS DISCHARGE LAMP - Patent 1040510

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EP 1 040 510 A1

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(43)	Date of publication:
	04.10.2000 Bulletin 2000/40

(21)	Application number: 98952864.1

(22)	Date of filing: 05.11.1998

(51)	International Patent Classification (IPC)⁷: H01J 61/52

(86)	International application number:
	PCT/GB9803/324

(87)	International publication number:
	WO 9928/948 (10.06.1999 Gazette 1999/23)

(84)	Designated Contracting States:
	DE FR GB SE

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Priority:

02.12.1997 GB 9725388

(71)	Applicant: CENTRAL RESEARCH LABORATORIES LIMITED
	Hayes,Middlesex, UB3 1HH (GB)

(72)	Inventor:
	WRIGHT, Graham, Leslie Ickenham,Middlesex UB10 8HQ (GB)

(74)	Representative: Leaman, Keith
	QED I.P. Services Limited,Dawley Road Hayes,Middlesex UB3 1HH Hayes,Middlesex UB3 1HH (GB)

(54)	A METHOD FOR PROLONGING THE LIFE OF A GAS DISCHARGE LAMP