(19)
(11) EP 0 441 903 A1

(12)

(43) Date of publication:
21.08.1991 Bulletin 1991/34

(21) Application number: 90903287.0

(22) Date of filing: 16.10.1989
(51) International Patent Classification (IPC): 
H01L( . )
C01G 1/ 00( . )
H01L 39/ 12( . )
C01G 15/ 00( . )
C04B 35/ 45( . )
H01L 39/ 22( . )
(86) International application number:
PCT/US1989/004477
(87) International publication number:
WO 1990/005384 (17.05.1990 Gazette 1990/11)
(84) Designated Contracting States:
AT CH DE FR GB IT LI NL

(30) Priority: 02.11.1988 US 19880266180

(71) Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
Wilmington Delaware 19898 (US)

(72) Inventor:
  • HERRON, Norman
    Wilmington, DE 19810 (US)

(74) Representative: Jones, Alan John, et al 
CARPMAELS & RANSFORD 43 Bloomsbury Square
London, WC1A 2RA
London, WC1A 2RA (GB)

   


(54) SUPERCONDUCTING METAL OXIDE COMPOSITIONS AND PROCESSES FOR MANUFACTURE AND USE