EP0875129B1 - Gas discharge lamp - Google Patents
Gas discharge lamp Download PDFInfo
- Publication number
- EP0875129B1 EP0875129B1 EP97947024A EP97947024A EP0875129B1 EP 0875129 B1 EP0875129 B1 EP 0875129B1 EP 97947024 A EP97947024 A EP 97947024A EP 97947024 A EP97947024 A EP 97947024A EP 0875129 B1 EP0875129 B1 EP 0875129B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- discharge lamp
- gas discharge
- output
- potential
- reference potential
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 150000002500 ions Chemical class 0.000 description 4
- 230000005012 migration Effects 0.000 description 3
- 238000013508 migration Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC using static converters
- H05B41/288—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
- H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions
- H05B41/2928—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the lamp against abnormal operating conditions
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S315/00—Electric lamp and discharge devices: systems
- Y10S315/07—Starting and control circuits for gas discharge lamp using transistors
Definitions
- the invention is based on a device for operation a gas discharge lamp of the genus Main claim.
- DE-OS 42 18 647 is one High-voltage discharge lamp device known.
- the output voltage of the step-up to DC converter the high-voltage discharge lamp with alternating switched polarities supplied.
- the Gas discharge lamp is therefore at a voltage that rectangular between the positive and negative value of the Alternating output voltage of the DC-DC converter.
- a constant frequency of polarity reversal is thus an average of the gas discharge lamp applied voltage, which corresponds to the reference potential. If the gas discharge lamp is housed in a housing, that also lies on this reference potential arises no potential difference, the harmful Prevents ion migration in the lamp.
- DE-PS 41 41 804 is used to generate a Potential difference between the gas discharge lamp and the environment a part provided that compared to a Gas discharge lamp is placed positive potential. This Arrangement is however with additional manufacturing technology Associated effort.
- the invention has for its object a device to operate a gas discharge lamp, the one enables long life of the gas discharge lamp.
- a DC-DC converter converts one to one Reference potential related input voltage in two from Reference potential different output potentials around, which are characterized in that their amounts differ in size are.
- Such a bipolar DC converter has some specific advantages, for example in it exist that due to cheaper stress distributions Accept the requirements for the electronic components. So circuit breakers or diodes can be lower Use dielectric strength. It also poses with alternate activation of the gas discharge lamp a medium potential with the two output potentials one that deviates from the reference potential. The so The resulting potential difference has a positive effect on the life of the gas discharge lamp than it Interactions of the gas ions with the lamp body reduced. Ion diffusions in the lamp body can be to reduce.
- a expedient improvement provides that a first Output voltage that the first output potential on the Reference potential relates, has different polarity like a second output voltage which is the second Output potential refers to the reference potential. At constant alternating control of the Gas discharge lamp turns a medium Output voltage whose value is from the reference potential is different.
- the Gas discharge lamp is housed in a housing, whose potential is at the reference potential. Between the Housing and the gas discharge lamp is thus a Potential difference built up, which - as already explained - Ion migration reduced.
- the gas discharge lamp is preferably used in one Headlights of a motor vehicle.
- FIG. 1 shows a block diagram of a Embodiment and Figure 2 a typical Voltage curve on a gas discharge lamp.
- An input voltage 11 related to a reference potential 12 is converted into two by a DC-DC converter 10 Output potentials converted to a first Output terminal 21 and a second output terminal 22 can be tapped. Becomes the first output potential tapped at the first output terminal 21 and on the Reference potential 12 referred, so you get the first Output voltage 23, which at the second output terminal 22nd tapped second output potential on the Reference potential 12 relates to the second Output voltage 24.
- the two output potentials are a control circuit 15 supplied, which in turn a Gas discharge lamp 16 supplied.
- the time course of a lamp voltage 26 as it changes could set on the gas discharge lamp 16 fluctuates in constant intervals between the first Output voltage 23 and the second output voltage 24. This results in an average value 25 of this lamp voltage 26 a.
- the device according to the invention for operating a Gas discharge lamp 16 works as follows:
- the DC-DC converter 10 converts to that Reference potential 12 related input voltage 11 in a bipolar output voltage around. Serves as input voltage 11 for example one taken from a battery DC voltage.
- a bipolar DC voltage converter 10 in this context a DC-DC converter 10 understood who referred to the reference potential 12 Converts input voltage 11 into two output potentials, which are different from the reference potential 12.
- Such DC voltage converter 10 are from the relevant Technical literature known.
- Single-ended flyback converter or single-ended forward converter can be used as well for example push-pull converters, in which one transformer isolation is carried out.
- isolation could be a second from Reference potential 12 different output potential too can be achieved in that the flowing on the primary side Current of the transformer through a diode and one Smoothing capacitor of the first output terminal 21 while the current flowing on the secondary side of the second Output terminal 22 is supplied.
- Output potentials form the input variables of the Control circuit 15. This ensures that the Gas discharge lamp 16 is supplied with an alternating current, since in DC the life of the gas discharge lamp 16 strong would be affected.
- the control circuit 15 can consist of an H-bridge, for example The gas discharge lamp 16 lies diagonally. By suitable Control of the four circuit breakers is always alternately the first and the second output potential the connections of the gas discharge lamp 16 are laid. The timing in the exemplary embodiment is the same. Then ensures that a mean value 25 arises, the Potential is different from the reference potential 12. Likewise a clocked pole reversal is conceivable.
- the control circuit 15 effects a rectangular shape Course of the lamp voltage 26 according to Figure 2.
- the first and second output voltage 23, 24 are alternating with the same period of time on the gas discharge lamp 16.
- the Mean 25 could also be different Duration of the activation with respect to the first and second Realize output potential. However, this increases the Control effort.
- the gas discharge lamp 16 can be used in particular Use motor vehicles. Will the lamp holder or that Housing of the gas discharge lamp 16 to the device mass the desired potential difference is created. The negative mean value 25 related to the device mass prevents unwanted ion migration.
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Description
Die Erfindung geht aus von einer Vorrichtung zum Betreiben einer Gasentladungslampe nach der Gattung des Hauptanspruchs. Aus der DE-OS 42 18 647 ist eine Hochspannungs-Entladungslampeneinrichtung bekannt. Hierbei wird die Ausgangsspannung des Aufwärts-Gleichspannungs-Wandlers der Hochspannungs-Entladungslampe mit abwechselnd umgeschalteten Polaritäten zugeführt. An der Gasentladungslampe liegt somit eine Spannung an, die rechteckförmig zwischen dem positiven und negativen Wert der Ausgangsspannung des Gleichspannungswandlers abwechselt. Bei einer gleichbleibenden Frequenz der Polaritätsumkehr ergibt sich somit ein Mittelwert der an der Gasentladungslampe anliegenden Spannung, der dem Bezugspotential entspricht. Ist die Gasentladungslampe in einem Gehäuse untergebracht, das ebenfalls auf diesem Bezugspotential liegt, stellt sich keine Potentialdifferenz ein, die schädliche Ionenwanderungen in der Lampe unterbindet.The invention is based on a device for operation a gas discharge lamp of the genus Main claim. From DE-OS 42 18 647 is one High-voltage discharge lamp device known. Here becomes the output voltage of the step-up to DC converter the high-voltage discharge lamp with alternating switched polarities supplied. At the Gas discharge lamp is therefore at a voltage that rectangular between the positive and negative value of the Alternating output voltage of the DC-DC converter. At gives a constant frequency of polarity reversal is thus an average of the gas discharge lamp applied voltage, which corresponds to the reference potential. If the gas discharge lamp is housed in a housing, that also lies on this reference potential arises no potential difference, the harmful Prevents ion migration in the lamp.
In der DE-PS 41 41 804 ist zur Erzeugung einer Potentialdifferenz zwischen Gasentladungslampe und Umgebung ein Teil vorgesehen, das auf ein im Vergleich zur Gasentladungslampe positives Potential gelegt wird. Diese Anordnung ist jedoch mit zusätzlichem fertigungstechnischen Aufwand verbunden.In DE-PS 41 41 804 is used to generate a Potential difference between the gas discharge lamp and the environment a part provided that compared to a Gas discharge lamp is placed positive potential. This Arrangement is however with additional manufacturing technology Associated effort.
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Betreiben einer Gasentladungslampe anzugeben, die eine hohe Lebensdauer der Gasentladungslampe ermöglicht.The invention has for its object a device to operate a gas discharge lamp, the one enables long life of the gas discharge lamp.
Die Aufgabe wird durch die im unabhängigen Anspruch angegebenen Merkmale gelöst.The task is defined in the independent claim specified features solved.
Ein Gleichspannungswandler wandelt eine auf ein Bezugspotential bezogene Eingangsspannung in zwei vom Bezugspotential verschiedene Ausgangspotentiale um, die sich dadurch auszeichnen, daß ihre Beträge unterschiedlich groß sind. Ein solcher bipolarer Gleichspannungswandler weist einige spezifische Vorteile auf, die beispielsweise darin bestehen, daß aufgrund günstigerer Spannungsaufteilungen die Anforderungen an die elektronischen Bauteile abnehmen. So können Leistungsschalter oder Dioden geringerer Spannungsfestigkeit Verwendung finden. Darüber hinaus stellt sich bei wechselweiser Ansteuerung der Gasentladungslampe mit den beiden Ausgangspotentialen ein mittleres Potential ein, das von dem Bezugspotential abweicht. Die so entstehende Potentialdifferenz wirkt sich insofern positiv auf die Lebensdauer der Gasentladungslampe aus, als sie Wechselwirkungen der Gasionen mit dem Lampenkörper vermindert. Ionendiffusionen in den Lampenkörper lassen sich reduzieren.A DC-DC converter converts one to one Reference potential related input voltage in two from Reference potential different output potentials around, which are characterized in that their amounts differ in size are. Such a bipolar DC converter has some specific advantages, for example in it exist that due to cheaper stress distributions Accept the requirements for the electronic components. So circuit breakers or diodes can be lower Use dielectric strength. It also poses with alternate activation of the gas discharge lamp a medium potential with the two output potentials one that deviates from the reference potential. The so The resulting potential difference has a positive effect on the life of the gas discharge lamp than it Interactions of the gas ions with the lamp body reduced. Ion diffusions in the lamp body can be to reduce.
Durch die in den abhängigen Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen möglich. Eine zweckmäßige Verbesserung sieht vor, daß eine erste Ausgangsspannung, die das erste Ausgangspotential auf das Bezugspotential bezieht, unterschiedliche Polarität besitzt wie eine zweite Ausgangsspannung, die das zweite Ausgangspotential auf das Bezugspotential bezieht. Bei gleichdauernder wechselweiser Ansteuerung der Gasentladungslampe stellt sich eine mittlere Ausgangsspannung ein, deren Wert vom Bezugspotential verschieden ist.By those listed in the dependent claims Measures are advantageous further training possible. A expedient improvement provides that a first Output voltage that the first output potential on the Reference potential relates, has different polarity like a second output voltage which is the second Output potential refers to the reference potential. At constant alternating control of the Gas discharge lamp turns a medium Output voltage whose value is from the reference potential is different.
In einer Weiterbildung ist vorgesehen, daß die Gasentladungslampe in einem Gehäuse untergebracht wird, dessen Potential auf dem Bezugspotential liegt. Zwischen dem Gehäuse und der Gasentladungslampe wird somit eine Potentialdifferenz aufgebaut, die - wie bereits ausgeführt - Ionenwanderungen reduziert.In a further development it is provided that the Gas discharge lamp is housed in a housing, whose potential is at the reference potential. Between the Housing and the gas discharge lamp is thus a Potential difference built up, which - as already explained - Ion migration reduced.
Bevorzugte Verwendung findet die Gasentladungslampe in einem Scheinwerfer eines Kraftfahrzeugs.The gas discharge lamp is preferably used in one Headlights of a motor vehicle.
Es zeigen Figur 1 ein Blockschaltbild eines Ausführungsbeispiels sowie Figur 2 einen typischen Spannungsverlauf an einer Gasentladungslampe.FIG. 1 shows a block diagram of a Embodiment and Figure 2 a typical Voltage curve on a gas discharge lamp.
Eine auf ein Bezugspotential 12 bezogene Eingangsspannung 11
wird durch einen Gleichspannungswandler 10 in zwei
Ausgangspotentiale umgewandelt, die an einer ersten
Ausgangsklemme 21 und an einer zweiten Ausgangsklemme 22
abgegriffen werden können. Wird das erste Ausgangspotential
an der ersten Ausgangsklemme 21 abgegriffen und auf das
Bezugspotential 12 bezogen, so erhält man die erste
Ausgangsspannung 23, das an der zweiten Ausgangsklemme 22
abgegriffene zweite Ausgangspotential auf das
Bezugspotential 12 bezogen ergibt die zweite
Ausgangsspannung 24. Die beiden Ausgangspotentiale werden
einer Ansteuerschaltung 15 zugeführt, die wiederum eine
Gasentladungslampe 16 versorgt.An
Der zeitliche Verlauf einer Lampenspannung 26, wie er sich
an der Gasentladungslampe 16 einstellen könnte, schwankt in
zeitlich gleichbleibenden Abständen zwischen der ersten
Ausgangsspannung 23 und der zweiten Ausgangsspannung 24.
Hierbei stellt sich ein Mittelwert 25 dieser Lampenspannung
26 ein.The time course of a
Die erfindungsgemäße Vorrichtung zum Betreiben einer
Gasentladungslampe 16 arbeitet folgendermaßen:The device according to the invention for operating a
Der Gleichspannungswandler 10 wandelt die auf das
Bezugspotential 12 bezogene Eingangsspannung 11 in eine
bipolare Ausgangsspannung um. Als Eingangsspannung 11 dient
beispielsweise eine einer Batterie entnommene
Gleichspannung. Als bipolarer Gleichspannungswandler 10 wird
in diesem Zusammenhang ein Gleichspannungswandler 10
verstanden, der die auf das Bezugspotential 12 bezogene
Eingangsspannung 11 in zwei Ausgangspotentiale umwandelt,
die vom Bezugspotential 12 verschieden sind. Solche
Gleichspannungswandler 10 sind aus der einschlägigen
Fachliteratur bekannt. Eintakt-Sperrwandler oder Eintakt-Durchflußwandler
können ebenso Verwendung finden wie
beispielsweise Gegentakt-Wandler, bei denen eine
transformatorische Potentialtrennung erfolgt. Neben einer
transformatorischen Potentialtrennung könnte ein zweites vom
Bezugspotential 12 verschiedenes Ausgangspotential auch
dadurch erreicht werden, daß der primärseitig fließende
Strom des Transformators über eine Diode und einem
Glättungskondensator der ersten Ausgangsklemme 21, während
der sekundärseitig fließende Strom der zweiten
Ausgangsklemme 22 zugeführt wird.The DC-
Diese beiden vom Bezugspotential 12 verschiedenen
Ausgangspotentiale bilden die Eingangsgrößen der
Ansteuerschaltung 15. Diese sorgt dafür, daß der
Gasentladungslampe 16 ein Wechselstrom zugeführt wird, da im
Gleichstrom die Lebensdauer der Gasentladungslampe 16 stark
beeinträchtigt würde. Die Ansteuerschaltung 15 kann
beispielsweise aus einer H-Brücke bestehen, in deren
Diagonale die Gasentladungslampe 16 liegt. Durch geeignete
Ansteuerung der vier Leistungsschalter wird immer
abwechselnd das erste und das zweite Ausgangspotential an
die Anschlüsse der Gasentladungslampe 16 gelegt. Die Taktung
im Ausführungsbeispiel erfolgt gleichbleibend. Dann ist
gewährleistet, daß sich ein Mittelwert 25 einstellt, dessen
Potential unterschiedlich ist zum Bezugspotential 12. Ebenso
ist eine getaktete Umpolschaltung denkbar.These two differ from the
Die Ansteuerschaltung 15 bewirkt einen rechteckförmigen
Verlauf der Lampenspannung 26 gemäß Figur 2. Die erste und
zweite Ausgangsspannung 23, 24 liegen abwechselnd mit der
gleichen Zeitdauer an der Gasentladungslampe 16 an. Der
Mittelwert 25 ließe sich ebenso durch unterschiedliche
Zeitdauern der Ansteuerung bezüglich des ersten und zweiten
Ausgangspotentials realisieren. Damit erhöht sich jedoch der
Aufwand für die Ansteuerung.The
Die Gasentladungslampe 16 läßt sich insbesondere bei
Kraftfahrzeugen einsetzen. Wird die Lampenfassung oder das
Gehäuse der Gasentladungslampe 16 auf die Gerätemasse
gelegt, so entsteht die gewünschte Potentialdifferenz. Der
negative Mittelwert 25 bezogen auf die Gerätemasse
verhindert die unerwünschten Ionenwanderungen.The
Claims (4)
- Device for operating a gas discharge lamp (16), having a dc-dc converter (10) which converts an input voltage (11) related to a reference potential (12) into at least two output potentials differing from the reference potential (12), the gas discharge lamp (16) being brought to these output potentials via a drive circuit (15), characterized in that the absolute values of the two output potentials differ in magnitude.
- Device according to Claim 1, characterized in that a first output voltage (23), which relates the first output potential to the reference potential (12), has a different polarity from a second output voltage (24), which relates the second output potential to the reference potential (12).
- Device according to one of the preceding claims, characterized in the gas discharge lamp (16) is accommodated in a housing whose potential is at the reference potential (12).
- Use of the device according to the one of the preceding claims in a headlamp of a motor vehicle.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19646861A DE19646861C1 (en) | 1996-11-13 | 1996-11-13 | Device for operating a gas discharge lamp |
| DE19646861 | 1996-11-13 | ||
| PCT/DE1997/002486 WO1998021920A1 (en) | 1996-11-13 | 1997-10-25 | Gas discharge lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0875129A1 EP0875129A1 (en) | 1998-11-04 |
| EP0875129B1 true EP0875129B1 (en) | 2000-01-12 |
Family
ID=7811526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97947024A Expired - Lifetime EP0875129B1 (en) | 1996-11-13 | 1997-10-25 | Gas discharge lamp |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6078149A (en) |
| EP (1) | EP0875129B1 (en) |
| JP (1) | JP2000503469A (en) |
| KR (1) | KR19990077118A (en) |
| DE (2) | DE19646861C1 (en) |
| ES (1) | ES2142692T3 (en) |
| WO (1) | WO1998021920A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100674423B1 (en) * | 2001-01-19 | 2007-01-29 | 엘지전자 주식회사 | Transmission / reception system and data processing method |
| GB2372646B (en) * | 2001-02-26 | 2005-06-22 | Cambridge Consultants | Electronic circuits |
| DE102008025748A1 (en) | 2008-05-29 | 2009-12-03 | Automotive Lighting Reutlingen Gmbh | Electrical circuit arrangement for controlling LEDs in lighting equipment of car, has energy source comprising component that is arranged in feedback branch arranged between load-sided connection of switch element and source |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5010279A (en) * | 1985-08-26 | 1991-04-23 | Lathom Michael S | Switched capacitive ballasts for discharge lamps |
| EP0359860A1 (en) * | 1988-09-23 | 1990-03-28 | Siemens Aktiengesellschaft | Device and method for operating at least one discharge lamp |
| JP2587720B2 (en) * | 1990-10-19 | 1997-03-05 | 株式会社小糸製作所 | Lighting circuit for vehicle discharge lamps |
| DE4141804C1 (en) * | 1991-12-18 | 1993-02-25 | Robert Bosch Gmbh, 7000 Stuttgart, De | |
| DE4218647A1 (en) * | 1992-01-27 | 1993-08-12 | Mitsubishi Electric Corp | HV gas-discharge lamp arrangement with DC voltage source - has one or two dc voltage converters followed by polarity reversing switch, with driver circuit and oscillator |
| JP2875129B2 (en) * | 1993-01-05 | 1999-03-24 | 三菱電機株式会社 | Vehicle discharge lamp lighting device |
| JP2879514B2 (en) * | 1993-01-07 | 1999-04-05 | 株式会社小糸製作所 | Lighting circuit for vehicle discharge lamps |
| JP3244859B2 (en) * | 1993-04-12 | 2002-01-07 | 池田デンソー株式会社 | Discharge lamp lighting device |
| JP3224948B2 (en) * | 1994-08-30 | 2001-11-05 | 株式会社小糸製作所 | Lighting circuit of discharge lamp |
-
1996
- 1996-11-13 DE DE19646861A patent/DE19646861C1/en not_active Expired - Fee Related
-
1997
- 1997-10-25 DE DE59701000T patent/DE59701000D1/en not_active Expired - Fee Related
- 1997-10-25 ES ES97947024T patent/ES2142692T3/en not_active Expired - Lifetime
- 1997-10-25 JP JP10522021A patent/JP2000503469A/en active Pending
- 1997-10-25 WO PCT/DE1997/002486 patent/WO1998021920A1/en not_active Application Discontinuation
- 1997-10-25 EP EP97947024A patent/EP0875129B1/en not_active Expired - Lifetime
- 1997-10-25 KR KR1019980705254A patent/KR19990077118A/en not_active Application Discontinuation
- 1997-10-25 US US09/101,596 patent/US6078149A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE59701000D1 (en) | 2000-02-17 |
| JP2000503469A (en) | 2000-03-21 |
| EP0875129A1 (en) | 1998-11-04 |
| US6078149A (en) | 2000-06-20 |
| WO1998021920A1 (en) | 1998-05-22 |
| ES2142692T3 (en) | 2000-04-16 |
| DE19646861C1 (en) | 1998-04-16 |
| KR19990077118A (en) | 1999-10-25 |
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