Global Patent Index - EP 0793403 B1

EP 0793403 B1 2001-12-19 - Improvement in LED circuits, especially for vehicles, signalisation lights and control panels

Title (en)

Improvement in LED circuits, especially for vehicles, signalisation lights and control panels

Title (de)

Verbesserung von LED-Schaltungen, insbesondere für Kraftfahrzeuge, Stoplichter und Steuerungspanele

Title (fr)

Perfectionnement aux circuits d'illumination à diodes électroluminescentes, notamment pour véhicules automobiles, feu de signalisation et tableau de commande l'incorporant

Publication

EP 0793403 B1 (FR)

Application

EP 97101399 A

Priority

FR 9602469 A

Abstract (en)

[origin: EP0793403A1] The illumination circuit includes three parallel branches of LEDs forming "i" lines and "j" columns. The network is connected with each branch connected in series and individual LEDs paralleled up, forming a total of "ij" LEDs. Some of the branches have resistors in parallel (22,23). Each LED circuit has a series resistance and zener diode (Ri) placed in series with it.

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

H05B 33/08

IPC 8 full level (invention and additional information)

F21S 8/10 (2006.01); H05B 33/08 (2006.01)

CPC (invention and additional information)

H05B 33/0809 (2013.01); F21S 43/14 (2018.01); H05B 33/0821 (2013.01)

Designated contracting state (EPC)

DE ES GB IT

EPO simple patent family

EP 0793403 A1 19970903; EP 0793403 B1 20011219; DE 69709206 D1 20020131; DE 69709206 T2 20020822; ES 2170290 T3 20020801; FR 2745458 A1 19970829; FR 2745458 B1 19980410

INPADOC legal status


2017-08-31 [PG25 ES] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2017-05-09 [REG ES FD2A] ANNOUNCEMENT OF LAPSE IN SPAIN

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2017-01-29 [REG DE R071] EXPIRY OF RIGHT

- Document: DE 69709206

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2016-04-29 [PGFP ES] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2012-10-31 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Effective date: 20120129

2012-09-26 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20120129

2011-03-31 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2002-12-11 [26N] NO OPPOSITION FILED

2002-08-01 [REG ES FG2A] DEFINITIVE PROTECTION

- Document: ES 2170290 T3

2002-04-03 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20020312

2002-01-31 [REF] CORRESPONDS TO:

- Document: DE 69709206 20020131

2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

2001-12-19 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE ES GB IT

1999-12-15 [17Q] FIRST EXAMINATION REPORT

- Effective date: 19991103

1998-04-22 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19980225

1997-09-03 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE ES GB IT