(19)
(11) EP 0 495 850 A1

(12)

(43) Date of publication:
29.07.1992 Bulletin 1992/31

(21) Application number: 90915276.0

(22) Date of filing: 19.10.1990
(51) International Patent Classification (IPC): 
B01J 19/ 12( . )
C04B 35/ 64( . )
C04B 37/ 00( . )
B30B 11/ 00( . )
C04B 35/ 645( . )
(86) International application number:
PCT/CA1990/000358
(87) International publication number:
WO 1991/005747 (02.05.1991 Gazette 1991/10)
(84) Designated Contracting States:
DE GB SE

(30) Priority: 19.10.1989 CA 19892001062

(71) Applicant: ALCAN INTERNATIONAL LIMITED
Montreal Quebec H3A 3G2 (CA)

(72) Inventors:
  • APTE, Prasad, Shrikrishna
    Kingston, Ontario K7M 1E2 (CA)
  • KIMBER, Robert, Murray
    R.R. 1, Kingston, Ontario K0H 2T0 (CA)
  • PATTERSON, Mark, Christopher, Lawrence
    Kingston, Ontario K7L 2C4 (CA)
  • ROY, Raymond, Yves
    Kingston, Ontario K7M 5Z5 (CA)
  • MITCHELL, David, Nelson
    Kingston, Ontario K7M 1J5 (CA)

(74) Representative: Pennant, Pyers, et al 
Stevens, Hewlett & Perkins 1 Serjeants' Inn Fleet Street
London EC4Y 1LL
London EC4Y 1LL (GB)

   


(54) METHOD OF HEAT-TREATING UNSTABLE CERAMICS BY MICROWAVE HEATING AND SUSCEPTORS USED THEREFOR