Global patent index - EP 1009196 A1

EP 1009196 A1 2000-06-14 - PLANAR HEATING ELEMENT

Title (en)

PLANAR HEATING ELEMENT

Title (de)

FLAECHENHEIZELEMENT

Title (fr)

ELEMENT CHAUFFANT PLANAR

Publication

EP 1009196 A1 (EN)

Application

EP 97900419 A

Priority

JP 9700052 W

Abstract (en)

A sheet-shaped heater is structured by attaching plural electrode covering members 4, each covering electrodes 3, on a sheet-shaped heating resistance sheet 2 to have a predetermined space from each other. At least an area adjacent to the electrode 3 is a PTC layer having positive temperature coefficient characteristics which show increasing electric resistance value with rise in temperature. The heating resistance sheet 2 does not have the positive temperature coefficient characteristics or has the positive temperature coefficient characteristics of which, in a range below the temperature showing the maximum kick-off increase ratio of the PTC layer, the kick-off increase ratio is smaller than that of the PTC layer or the kick-off temperature is higher than that of the PTC layer. <IMAGE>

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

H05B 3/20; H05B 3/03; H05B 3/14; H05B 3/26

IPC 8 full level (invention and additional information)

H05B 3/12 (2006.01); H05B 3/14 (2006.01); H05B 3/20 (2006.01); H05B 3/24 (2006.01); H05B 3/28 (2006.01)

CPC (invention and additional information)

H05B 3/24 (2013.01); H05B 3/12 (2013.01); H05B 3/14 (2013.01); H05B 3/145 (2013.01); H05B 3/146 (2013.01); H05B 3/20 (2013.01); H05B 3/28 (2013.01); H05B 2203/02 (2013.01)

Citation (search report)

See references of WO 9831196A1

Designated contracting state (EPC)

DE FI FR GB IT NL SE

EPO simple patent family

EP 1009196 A1 20000614; AU 1398297 A 19980803; CA 2256616 A1 19980716; WO 9831196 A1 19980716

INPADOC legal status

2001-01-31 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20000201

2000-06-14 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19981201

2000-06-14 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FI FR GB IT NL SE