EP 0129997 A1 19850102 - Process for the production of PTC thermistors.
Title (en)
Process for the production of PTC thermistors.
Title (de)
Verfahren zum Herstellen von PTC-Thermistoren.
Title (fr)
Procédé de fabrication de thermistors PTC.
Publication
Application
Priority
JP 10448383 A 19830611
Abstract (en)
A process for the production of glass sealed types PTC thermistors is disclosed wherein a positive temperature coefficient semiconductor ceramic material (1) is sealed in a glass (4) having a softening point of no higher than 560 DEG C in the presence of air, oxygen or an air/oxygen mixture.
IPC 1-7
IPC 8 full level
C04B 37/00 (2006.01); H01C 1/024 (2006.01); H01C 7/02 (2006.01); H01C 17/02 (2006.01)
CPC (source: EP KR)
H01C 1/024 (2013.01 - EP); H01C 7/02 (2013.01 - KR); H01C 7/025 (2013.01 - EP); H01C 17/02 (2013.01 - EP)
Citation (search report)
- [X] US 3377561 A 19680409 - SAUER HAROLD A
- [A] GB 992926 A 19650526 - CONSTRUCTA WERKE GMBH
- [A] US 4276536 A 19810630 - WISNIA JEFFRY A
- [A] LU 69220 A1 19740408
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0129997 A1 19850102; EP 0129997 B1 19880831; DE 3473801 D1 19881006; JP H0145962 B2 19891005; JP S59229803 A 19841224; KR 850000811 A 19850309; KR 900005267 B1 19900721
DOCDB simple family (application)
EP 84303796 A 19840605; DE 3473801 T 19840605; JP 10448383 A 19830611; KR 840002770 A 19840521