(19)
(11) EP 0 868 749 A1

(12)

(43) Date of publication:
07.10.1998 Bulletin 1998/41

(21) Application number: 96943758.0

(22) Date of filing: 17.12.1996
(51) International Patent Classification (IPC): 
H01L 29/ 73( . )
H01L 29/ 08( . )
H01L 21/ 331( . )
H01L 29/ 732( . )
(86) International application number:
PCT/US1996/019962
(87) International publication number:
WO 1997/023910 (03.07.1997 Gazette 1997/29)
(84) Designated Contracting States:
DE FR GB IT NL

(30) Priority: 22.12.1995 US 19950009135P
22.12.1995 US 19950009141P
31.10.1996 US 19960741444
31.10.1996 US 19960742224

(71) Applicant: THE WHITAKER CORPORATION
Wilmington, Delaware 19808 (US)

(72) Inventors:
  • TAJADOD, James
    Dedham, MA 02026 (US)
  • BOLES, Timothy, Edward
    Tyngsboro, MA 01879 (US)
  • NOONAN, Paulette, Rita
    Dracut, MA 10826 (US)

(74) Representative: Warren, Keith Stanley, et al 
BARON & WARREN 18 South End Kensington
London W8 5BU
London W8 5BU (GB)

   


(54) SILICON BIPOLAR JUNCTION TRANSISTOR HAVING REDUCED EMITTER LINE WIDTH