Global patent index - EP 0971561 A1

EP 0971561 A1 2000-01-12 - Electrical heating resistance for electric furnace and manufacturing method for such a resistance

Title (en)

Electrical heating resistance for electric furnace and manufacturing method for such a resistance

Title (de)

Elektrischer Heizwiderstand für Electroofen und Herstellungsverfahren

Title (fr)

Résistance électrique chauffante pour four électrique et procédé de fabrication d'une telle résistance

Publication

EP 0971561 A1 (FR)

Application

EP 99401460 A

Priority

FR 9808634 A

Abstract (en)

A resistance heater has a ceramic resistance heating portion (12) comprising a sintered mixture of silicon carbide particles, electrically conductive phase forming dopant particles and mineral particles. Preferred Features: The dopant particles consist of nickel oxide and the mineral particles consist of alumina and yttrium oxide.

Abstract (fr)

Cette résistance électrique chauffante (10) pour four électrique comprend une partie (12) résistive chauffante en matière céramique. La matière céramique comporte un mélange fritté de particules de carbure de silicium, de particules dopantes adaptées pour l'obtention, après frittage, d'une phase électriquement conductrice et de particules minérales. <IMAGE>

IPC 1-7 (main, further and additional classification)

H05B 3/14; H05B 3/64

IPC 8 full level (invention and additional information)

F27D 11/02 (2006.01); H05B 3/14 (2006.01); H05B 3/64 (2006.01)

CPC (invention and additional information)

H05B 3/141 (2013.01); H05B 3/148 (2013.01); H05B 3/64 (2013.01)

Citation (search report)

  • [A] EP 0180928 A2
  • [A] US 4174971 A
  • [A] FR 2575458 A1
  • [A] FR 2757736 A1
  • [A] WO 9314044 A1
  • [A] PATENT ABSTRACTS OF JAPAN vol. 017, no. 340 (E-1389), 28 juin 1993 (1993-06-28) & JP 05 047455 A (NIPPON PILLAR PACKING CO LTD), 26 février 1993 (1993-02-26)
  • [A] SOVIET PATENTS ABSTRACTS Week 9230 Derwent Publications Ltd., London, GB; AN 92-248581 XP002097184 & SU 1 685 752 A (TERN EDUCATION INST), 29 mai 1989 (1989-05-29)
  • [A] JAPANESE PATENTS GAZETTE Week 8512 Derwent Publications Ltd., London, GB; AN 85-072413 XP002097185 & JP 60 027653 A (HITACHI LTD), 21 juillet 1983 (1983-07-21)

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB IT LI NL PT SE

EPO simple patent family

EP 0971561 A1 20000112; EP 0971561 B1 20020911; AT 224127 T 20020915; CA 2276678 A1 20000106; DE 69902853 D1 20021017; DE 69902853 T2 20030522; DK 0971561 T3 20030113; ES 2183491 T3 20030316; FR 2780845 A1 20000107; FR 2780845 B1 20000811; JP 2000036371 A 20000202; NO 993306 A 20000107; NO 993306 D0 19990702; PT 971561 E 20030131; US 6146550 A 20001114

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