(19)
(11)
EP 0 686 307 A1
(12)
(43)
Date of publication:
13.12.1995
Bulletin 1995/50
(21)
Application number:
95905439.0
(22)
Date of filing:
15.12.1994
(51)
International Patent Classification (IPC):
H01L
29/
45
( . )
H03F
3/
30
( . )
H03F
1/
32
( . )
H03F
3/
45
( . )
(86)
International application number:
PCT/US1994/014695
(87)
International publication number:
WO 1995/017012
(
22.06.1995
Gazette 1995/26)
(84)
Designated Contracting States:
DE FR GB
(30)
Priority:
17.12.1993
US 19930169854
(71)
Applicant:
NATIONAL SEMICONDUCTOR CORPORATION
Sunnyvale, CA 95086-3737 (US)
(72)
Inventor:
JOHNSON, Nicky, M.
Los Altos, CA 94024 (US)
(74)
Representative:
Bowles, Sharon Margaret, et al
BOWLES HORTON Felden House Dower Mews High Street
Berkhamsted Hertfordshire HP4 2BL
Berkhamsted Hertfordshire HP4 2BL (GB)
(54)
REFRACTORY METAL CONTACT FOR A POWER DEVICE