BIPOLAR TRANSISTOR DEVICES AND METHODS OF MAKING THE SAME - Patent 0346409

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EP 0 346 409 A1

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(43)	Date of publication:
	20.12.1989 Bulletin 1989/51

(21)	Application number: 88909569.0

(22)	Date of filing: 11.11.1988

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International Patent Classification (IPC):

H01L 29/ 73^{( . )}
H01L 21/ 74^{( . )}
H01L 27/ 06^{( . )}

H01L 21/ 331^{( . )}
H01L 21/ 8249^{( . )}
H01L 29/ 08^{( . )}

(86)	International application number:
	PCT/GB1988/000996

(87)	International publication number:
	WO 1989/004555 (18.05.1989 Gazette 1989/11)

(84)	Designated Contracting States:
	AT BE CH DE FR GB IT LI LU NL SE

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Priority:

11.11.1987 GB 19870026367

(71)	Applicant: LSI LOGIC EUROPE PLC
	Bracknell, Berkshire RG12 1BP (GB)

(72)	Inventor:
	BLOMLEY, Peter, Fred Hertfordshire CM23 2RT (GB)

(74)	Representative: Thomson, Roger Bruce, et al
	POLLAK MERCER & TENCH Eastcheap House Central Approach Letchworth Hertfordshire SG6 3DS Letchworth Hertfordshire SG6 3DS (GB)

(54)	BIPOLAR TRANSISTOR DEVICES AND METHODS OF MAKING THE SAME