EP0116302B1 - Umrichter - Google Patents
Umrichter Download PDFInfo
- Publication number
- EP0116302B1 EP0116302B1 EP84100334A EP84100334A EP0116302B1 EP 0116302 B1 EP0116302 B1 EP 0116302B1 EP 84100334 A EP84100334 A EP 84100334A EP 84100334 A EP84100334 A EP 84100334A EP 0116302 B1 EP0116302 B1 EP 0116302B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- capacitor
- voltage
- charge
- switch
- inverter
- 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
Links
- 230000001360 synchronised effect Effects 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 41
- 230000001419 dependent effect Effects 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 238000004804 winding Methods 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 230000002950 deficient Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000005417 remagnetization Effects 0.000 description 1
- 238000004904 shortening Methods 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
- H05B41/295—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 with preheating electrodes, e.g. for fluorescent lamps
- H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
- H05B41/2981—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
- H05B41/2985—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp 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
- 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
-
- 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 relates to a converter according to the preamble of claim 1.
- Such a synchronous control of the charging switch depending on the voltage at one of the switches of the inverter, as is known from EP-A 2 -85 073, has the major advantage that the operating state of the step-up converter is automatically based on that of the inverter: For example, if the consumer connected to it is faulty, the step-up converter automatically stops working and no more energy is pumped into the inverter. Conversely, the step-up converter automatically starts to swing up the inverter.
- the power supplied by the step-up converter changes automatically when the output voltage of the inverter is varied, for example to change the lamp power.
- it is therefore sufficient to intervene in the inverter, for example to change its operating frequency or, in the case of a constant operating frequency, to change the control times of the switches of the inverter.
- the converter can also be operated with DC voltage without any switchover, with all of the advantages listed remaining.
- the invention has for its object to reduce the cost of components even further.
- the solution to this problem is characterized in claim 1.
- a rectifier G in a two-way circuit is connected on the input side to an AC voltage network (220 volts / 50 Hertz) via a filter (not shown) and on the output side feeds a charging capacitor C via a charging inductor L and a charging diode D.
- the series circuit comprising two alternating transistors is one Inverter connected; the transistor T3 adjacent to the charging diode D is referred to below as the secondary transistor and the other transistor T1 as the primary transistor.
- Parallel to the secondary transistor T3 is a load branch with a discharge lamp E, a series resonance circuit C2, L2, a swinging capacitor C1 and the primary winding L30 of a saturation transformer Tr in series connection, the capacitor C2 of the series resonance circuit being between the two preheatable electrodes of the discharge lamp E, which is connected to an electrode is connected directly to the charging capacitor C.
- the saturation transformer Tr has two secondary windings L31, L32 and a monitoring winding L33; the secondary windings L31, L32 are connected to the control circuits of the primary and secondary transistors T1, T3 in such a way that they are alternately turned on during the remagnetization time of the saturation transformer.
- the saturation transformer is dimensioned so that the operating frequency of the inverter determined by it is slightly above the resonance frequency of the series resonance circuit: This creates gaps between successive control pulses, so that a simultaneous conduction of the primary and secondary transistor and thus a short-circuit of the voltage on the charging capacitor C is excluded.
- Reverse diodes D1, D2 are provided in parallel with each of the transistors for the current conduction during the simultaneous blocking of both transistors.
- the voltage of the charging capacitor C is applied to the load branch and leads to a charging of the reversing capacitor C1 with the polarity indicated in the figure.
- the current continues to flow through the load branch, driven by the choke L2 of the series resonant circuit, via the reverse current diode D2 until T3 turns on: Then the reversing capacitor C1 discharges via T3 and the load branch until T3 blocks again. Then the load current continues to flow in the same direction via the charging capacitor C and the reverse current diode D1 until T1 is switched through again.
- the step-up converter works with a power MOS transistor T2.1, the control of which is considerably simplified: its control electrode is in fact connected to a capacitor C5 via a resistor which, in series with a capacitor C7, forms a voltage divider in parallel with the primary transistor T1 of the inverter.
- the voltage at C5 is limited by a Zener diode D6.
- This voltage divider, and in particular C7 is dimensioned such that the current flowing when blocking primary transistor T1 via C7 is sufficient to quickly charge both C5 and the capacitance of the control path of transistor T2.1 and thereby to control T2.1.
- This power transistor then remains on until its control voltage is eliminated. This is the case at the latest when the primary transistor T1 is conductive again, since the capacitance of the control path is then discharged from T2.1 via C7 and T1.
- T2.1 will block earlier, namely if transistor T8, which lies in parallel with capacitor C5, turns on and this transistor discharges the capacitance of the control path from T2.1. This is the case when the voltage across a delay capacitor C6 has reached a limit value given by a zener diode D3.
- the charging of C6 is dependent on the voltage at the charging capacitor C, to which the delay capacitor C6 is connected in parallel via a resistor R62. This resistance Furthermore, the series connection of a capacitor C4 and a resistor R1 is in parallel: in this way, the charging of C6 is also dependent on the AC component of the voltage on the charging capacitor C.
- C6 is connected in terms of AC voltage not to the charging capacitor C, but via a resistor R1 'to a voltage divider with the capacitors C4' and C ', shown in broken lines, which is connected in parallel with the rectifier G. .
- the charging capacitor C can also be included in this voltage divider, that is, C 'can be connected to the positive connection of C: this reduces the effort for the voltage divider.
- step-up converter This is dimensioned such that it is only effective at twice the frequency of the mains voltage and essentially represents a short circuit for higher-frequency interference voltages, such as those generated by the step-up converter itself. This applies regardless of the type of step-up converter characterized in claim 1.
- the delay capacitor C6 is also connected in parallel to the primary transistor T1 via a diode D8: it is therefore always discharged when T1 is conductive and begins charging at the moment when T1 is blocking, i. H. also simultaneously with the control of T2.1.
- T2.1 is thus controlled synchronously with the inverter, its current flow time depending on the charging of the delay capacitor.
- the reversing inverter and thus the step-up converter only start to work when the voltage at a starting capacitor C8 has reached such a value that its energy is switched to the control path of the primary transistor T1 via a trigger diode D13 and the latter is thus switched on.
- the ignition capacitor C8 is connected on the one hand via resistors R2, R4 and an electrode of the lamp E to the charging capacitor C and on the other hand via a diode D10 parallel to the switching path of the primary transistor T1: after the AC mains voltage has been applied to the rectifier, the charging capacitor C charges via the charging choke and Charging diode and thus also the ignition capacitor C8 until the primary transistor T1 is ignited; then at the same time the ignition capacitor is discharged again via D10, so that this starting circuit can no longer intervene during the periodic oscillation of the inverter.
- a stop thyristor T4 is provided, to which a monitoring winding L33 of the saturation transformer Tr is connected in parallel via diodes D11, D12 and the ignition capacitor C8 via R2 and which receives its holding current via the electrode of the discharge lamp adjacent to the charging capacitor C and a series resistor R4 .
- An RC element R3, C9 is also connected in parallel to the monitoring winding L33 via the diode D11, which in turn is connected in parallel to the control path of the stop thyristor T4 via a trigger diode D14.
- the function and dimensioning of this circuit is based on the fact that the amplitude of the current flowing through the load branch with the discharge lamp and detected by the monitoring winding L33 is significantly greater when the lamp is not ignited (resonance case) than when the lamp is ignited (damped resonance circuit): after a through the designation of the predeterminable number of unsuccessful start attempts has charged C9 to such an extent that the stop thyristor T4 ignites via the trigger diode D14 and short-circuits the monitoring winding L33.
- the step-up converter Due to the synchronous control of the step-up converter depending on the square-wave voltage at the switches of the inverter, the step-up converter is automatically switched off with the inverter and switched on again when the inverter starts.
- the inverter remains switched off until the holding current of the stop thyristor T4 is interrupted and it can therefore go back into the blocking state.
- the AC mains voltage can be switched off, for example.
- a shutdown is the result of a defective lamp that is replaced without switching off the mains voltage. Since the holding circuit is passed through an electrode of the lamp, the holding current is also interrupted automatically when the lamp is changed, so that the converter automatically starts up again after a new lamp is inserted.
Landscapes
- Inverter Devices (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Polarising Elements (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Road Paving Structures (AREA)
- Toys (AREA)
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
- Reinforced Plastic Materials (AREA)
- Amplifiers (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT84100334T ATE36108T1 (de) | 1983-01-19 | 1984-01-13 | Umrichter. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833301632 DE3301632A1 (de) | 1983-01-19 | 1983-01-19 | Umrichter |
DE3301632 | 1983-01-19 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0116302A2 EP0116302A2 (de) | 1984-08-22 |
EP0116302A3 EP0116302A3 (en) | 1986-02-12 |
EP0116302B1 true EP0116302B1 (de) | 1988-07-27 |
Family
ID=6188637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84100334A Expired EP0116302B1 (de) | 1983-01-19 | 1984-01-13 | Umrichter |
Country Status (8)
Country | Link |
---|---|
US (1) | US4562527A (fi) |
EP (1) | EP0116302B1 (fi) |
JP (1) | JPS59139875A (fi) |
AT (1) | ATE36108T1 (fi) |
BR (1) | BR8400197A (fi) |
DE (2) | DE3301632A1 (fi) |
FI (1) | FI79634C (fi) |
ZA (1) | ZA84369B (fi) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3437514A1 (de) * | 1984-10-12 | 1986-04-17 | Siemens AG, 1000 Berlin und 8000 München | Leuchte mit einer entladungslampe und einem elektronischen vorschaltgeraet |
DE3541307C1 (en) * | 1985-11-22 | 1987-02-05 | Philips Patentverwaltung | DC power supply generator e.g. for gas discharge lamp - obtains regulated DC voltage from mains supply giving sinusoidal input to filter and rectifier |
DE3541308C1 (en) * | 1985-11-22 | 1987-02-05 | Philips Patentverwaltung | DC power supply generator e.g. for gas discharge lamp - obtains regulated DC from mains supply giving sinusoidal input to filter and rectifier |
US4882663A (en) * | 1985-12-23 | 1989-11-21 | Nilssen Ole K | MOSFET flyback converter |
JPS62293292A (ja) * | 1986-06-13 | 1987-12-19 | キヤノン株式会社 | El駆動回路 |
DE3623749A1 (de) * | 1986-07-14 | 1988-01-21 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Schaltungsanordnung zum betrieb von niederdruckentladungslampen |
US4873617A (en) * | 1987-04-16 | 1989-10-10 | Camera Platforms International, Inc. | Power supply for arc lamps |
US4873616A (en) * | 1987-04-16 | 1989-10-10 | Camera Platforms International, Inc. | Power supply for arc lamps |
US4984148A (en) * | 1990-05-29 | 1991-01-08 | Westinghouse Electric Corp. | Two-phase bang-bang current control synchronizer |
JP3163712B2 (ja) * | 1992-01-28 | 2001-05-08 | 松下電工株式会社 | インバータ装置 |
JP3294343B2 (ja) * | 1992-11-13 | 2002-06-24 | 松下電工株式会社 | 電源装置 |
DE4425823A1 (de) * | 1994-07-08 | 1996-01-11 | Omnitronix Inc | Elektronisches Vorschaltgerät |
DE19619745A1 (de) * | 1996-05-15 | 1997-11-20 | Tridonic Bauelemente | Schaltungsanordnung zum Betreiben einer Last und elektronisches Vorschaltgerät mit einer derartigen Schaltungsanordnung zum Betreiben einer Lampe |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1803486A1 (de) * | 1968-10-17 | 1970-05-21 | Siemens Ag | Schaltungsanordnung zum Betrieb eines selbstgesteuerten Transistorwechselrichters |
US4251752A (en) * | 1979-05-07 | 1981-02-17 | Synergetics, Inc. | Solid state electronic ballast system for fluorescent lamps |
US4264949A (en) * | 1979-09-04 | 1981-04-28 | Litton Systems, Inc. | DC to DC power supply |
IT1137447B (it) * | 1980-04-15 | 1986-09-10 | Siemens Ag | Stabilizzatore per la connessione di una lampada a scarica |
EP0085073B1 (de) * | 1981-07-31 | 1986-10-22 | Siemens Aktiengesellschaft | Umrichter |
US4481460A (en) * | 1982-02-08 | 1984-11-06 | Siemens Aktiengesellschaft | Inverter with charging regulator having a variable keying ratio |
-
1983
- 1983-01-19 DE DE19833301632 patent/DE3301632A1/de not_active Withdrawn
-
1984
- 1984-01-11 US US06/570,003 patent/US4562527A/en not_active Expired - Fee Related
- 1984-01-12 JP JP59004227A patent/JPS59139875A/ja active Pending
- 1984-01-13 AT AT84100334T patent/ATE36108T1/de not_active IP Right Cessation
- 1984-01-13 EP EP84100334A patent/EP0116302B1/de not_active Expired
- 1984-01-13 DE DE8484100334T patent/DE3473111D1/de not_active Expired
- 1984-01-18 FI FI840190A patent/FI79634C/fi not_active IP Right Cessation
- 1984-01-18 BR BR8400197A patent/BR8400197A/pt unknown
- 1984-01-18 ZA ZA84369A patent/ZA84369B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
JPS59139875A (ja) | 1984-08-10 |
FI79634C (fi) | 1990-01-10 |
EP0116302A3 (en) | 1986-02-12 |
FI79634B (fi) | 1989-09-29 |
ZA84369B (en) | 1984-08-29 |
BR8400197A (pt) | 1984-08-21 |
FI840190A0 (fi) | 1984-01-18 |
DE3473111D1 (en) | 1988-09-01 |
US4562527A (en) | 1985-12-31 |
DE3301632A1 (de) | 1984-07-26 |
FI840190A (fi) | 1984-07-20 |
EP0116302A2 (de) | 1984-08-22 |
ATE36108T1 (de) | 1988-08-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0113451B1 (de) | Wechselrichter mit einem einen Reihenresonanzkreis und eine Entladungslampe enthaltenden Lastkreis | |
EP0660976B1 (de) | Rückspeisungsfester synchrongleichrichter | |
EP0127101B1 (de) | Wechselrichter zur Speisung von Entladungslampen | |
EP0116302B1 (de) | Umrichter | |
EP0525898A2 (de) | Schaltungsanordnung mit einem Schaltnetzteil | |
EP0146683B1 (de) | Wechselrichter | |
DE2827693A1 (de) | Wechselrichter und dessen verwendung in einem batterieladegeraet | |
DE3245112A1 (de) | Netzgeraet | |
EP0439240B1 (de) | Elektronisches Vorschaltgerät | |
DE102004016927A1 (de) | Verfahren zur Strom- und Spannungsregelung für ein Schaltnetzteil | |
DE3308407C2 (fi) | ||
DE3218583A1 (de) | Schaltervorrichtung zum oeffnen und schliessen eines elektrischen stromkreises | |
DE2541722C3 (de) | Verfahren zum Betrieb eines Schwingkreisumrichters | |
EP0085073B1 (de) | Umrichter | |
EP0331157B1 (de) | Schaltnetzgerät | |
DE2056847A1 (de) | Inverterschaltung | |
DE3338464A1 (de) | Hochfrequenz-helligkeitssteuerung fuer leuchtstofflampen | |
DE3626209A1 (de) | Vorschaltgeraet fuer wenigstens eine entladungslampe | |
DE2445032C2 (de) | Schaltungsanordnung zur Erzeugung einer Einschaltspannung für den Steuerteil eines Mittelfrequenz-Umrichters | |
EP0050131B1 (de) | Vorschaltgerät für eine entladungslampe | |
DE2527086A1 (de) | Brennerzuendanordnung | |
DE3530638A1 (de) | Schaltungsanordnung zum starten und betrieb von gasentladungslampen | |
DE3343930A1 (de) | Schaltungsanordnung zum betrieb von leuchtstoff- oder ultraviolett-niederspannungs-entladungslampen | |
EP0120258B1 (de) | Energiesparschaltung | |
DE3690071C2 (fi) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
RHK1 | Main classification (correction) |
Ipc: H05B 41/29 |
|
17P | Request for examination filed |
Effective date: 19860307 |
|
17Q | First examination report despatched |
Effective date: 19871211 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
REF | Corresponds to: |
Ref document number: 36108 Country of ref document: AT Date of ref document: 19880815 Kind code of ref document: T |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
REF | Corresponds to: |
Ref document number: 3473111 Country of ref document: DE Date of ref document: 19880901 |
|
ET | Fr: translation filed | ||
ITF | It: translation for a ep patent filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19890131 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19890131 Year of fee payment: 9 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19900423 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19901217 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19901219 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19910121 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19910124 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19910125 Year of fee payment: 8 |
|
ITTA | It: last paid annual fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Effective date: 19910131 Ref country code: CH Effective date: 19910131 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19920113 Ref country code: AT Effective date: 19920113 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19920114 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Effective date: 19920131 |
|
BERE | Be: lapsed |
Owner name: SIEMENS A.G. BERLIN UND MUNCHEN Effective date: 19920131 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19920801 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19920930 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
EUG | Se: european patent has lapsed |
Ref document number: 84100334.6 Effective date: 19920806 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20020318 Year of fee payment: 19 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030801 |