(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