(19)
(11)
EP 0 441 813 A1
(12)
(43)
Date of publication:
21.08.1991
Bulletin 1991/34
(21)
Application number:
89911838.0
(22)
Date of filing:
19.10.1989
(51)
International Patent Classification (IPC):
C04B
35/
00
( . )
C04B
35/
45
( . )
H01L
39/
02
( . )
H01L
39/
24
( . )
C01G
1/
00
( . )
H01B
12/
10
( . )
H01L
39/
14
( . )
(86)
International application number:
PCT/GB1989/001240
(87)
International publication number:
WO 1990/004856
(
03.05.1990
Gazette 1990/10)
(84)
Designated Contracting States:
CH DE FR IT LI NL SE
(30)
Priority:
20.10.1988
GB 19880024630
(71)
Applicant:
NATIONAL RESEARCH DEVELOPMENT CORPORATION
London SE1 6BU (GB)
(72)
Inventors:
EVETTS, Jan, Edgar
Cambridge CB3 9JH (GB)
GLOWACKI, Bartlomiej, Andrzej
Cambridge CB1 3AP (GB)
(74)
Representative:
Cullis, Roger
Patents Department British Technology Group Ltd 101 Newington Causeway
London SE1 6BU
London SE1 6BU (GB)
(54)
IMPROVEMENTS IN AND RELATING TO SUPERCONDUCTING COMPOSITE CONDUCTORS