EP0955384B1 - Verfahren zum Abschrecken von Werkstücken und Wärmebehandlungsanlage zur Durchführung des Verfahrens - Google Patents
Verfahren zum Abschrecken von Werkstücken und Wärmebehandlungsanlage zur Durchführung des Verfahrens Download PDFInfo
- Publication number
- EP0955384B1 EP0955384B1 EP99104318A EP99104318A EP0955384B1 EP 0955384 B1 EP0955384 B1 EP 0955384B1 EP 99104318 A EP99104318 A EP 99104318A EP 99104318 A EP99104318 A EP 99104318A EP 0955384 B1 EP0955384 B1 EP 0955384B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- coolant
- heat
- quenching
- workpieces
- 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
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/767—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/613—Gases; Liquefied or solidified normally gaseous material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
Definitions
- the invention relates to a method for quenching Workpieces in a treatment chamber by means of a quenching gas, in which in a common housing the Treatment chamber, a furnace area and a heat exchanger is provided, by which for quenching the workpieces the quenching gas is circulated and the one with a in the heat exchanger evaporating refrigerant works, and thus in the Treatment chamber recessed quenching gas as a heat carrier between the quenched workpieces in Oven area and the heat exchanger is used. Furthermore the invention of a heat treatment plant for Implementation of the procedure.
- a method and an apparatus of the above kind are the subject of DE 44 22 588 C1.
- a refrigeration unit arranged. While the quenching phase is the refrigerant through the heat exchanger in the treatment chamber and through the refrigeration unit pumped in a circle so that in the treatment chamber absorbed heat to be dissipated to the outside can.
- a refrigerant is selected, which like evaporating in a refrigerator in the heat exchanger, so that the heat of vaporization for the cooling effect can be used.
- the device according to DE 44 22 588 C1 is very expensive, because outside the treatment chamber a refrigeration unit arranged with a condenser and a compressor must become. Because the quenching of the workpieces as possible must be done quickly, in a relatively short time a lot of heat to be dissipated, so that the condenser and the compressor must have a high performance.
- a similar Plant is described in GB 1 452 062.
- the invention is based on the problem, a method of the type mentioned above in such a way that with the least possible expenditure on equipment as fast as possible Quenching workpieces within a treatment chamber becomes possible. Furthermore, a simple Device for carrying out this method found become.
- the first problem is solved according to the invention by that the heat exchanger before starting the quenching process, while there is a vacuum in the treatment chamber, at least partially filled with the liquid refrigerant is that the cooling of the quenching gas by the cooling capacity of the heat exchanger and the evaporation of the a supply container removed amount of charge when circulating of the quenching gas while cooling a Batch of workpieces takes place, with the cooling capacity the heat exchanger due to the evaporation of the amount of filling when circulating the quenching gas to complete Cooling a batch of workpieces is dimensioned.
- the required amount of coolant is particularly low, if according to an advantageous embodiment of the method a heat exchanger with heat exchanger surfaces of high Heat storage capacity is used. Such a heat exchanger you can open it up even before the quenching phase cool a low temperature so that during the Quenching phase for heat absorption not only the refrigerant is available.
- At least part of the vaporized for cooling the quenching gas Refrigerant can be used in the heat treatment plant itself be reused if the vaporized refrigerant for flooding the treatment chamber after quenching the workpieces is used.
- the inert gas can therefore during quenching to build up pressure from e.g. 1 bar to 6 bar, after quenching for more Batches or within the plant (with intermediate buffer) used for other process chambers or as control gas become.
- the refrigerant is available particularly cost-effectively and good as an inert gas when it is liquid nitrogen is.
- other liquefied gases are also usable, for example air.
- the second task namely the creation of a Heat treatment plant for carrying out the inventive Method, is solved by the treatment chamber via a valve with a gas collection container for the quenching gas is connected and that the heat exchanger via a non-return flap with the gas collection container connected is.
- the heat exchanger is at least partially Fill with the liquid refrigerant formed and the cooling capacity of the heat exchanger due to evaporation the amount of filling when circulating the quenching gas to completely cool a batch of workpieces sized.
- Such a heat treatment plant is very inexpensive because they do not have a refrigeration unit with a condenser and with a compressor for the refrigerant needed. Furthermore, it is particularly capable of quenching gas to effectively cool because during the quenching gas circulating the refrigerant evaporates in the heat exchanger and therefore the quenching gas by that of the Refrigerant absorbed heat of vaporization much heat is withdrawn.
- the heat exchanger itself needs opposite the previously used, operated with a brine heat exchangers not or only slightly remodeled.
- the amount of refrigerant required to cool the quench gas can be particularly low when the heat exchanger with heat exchanger surfaces of high heat storage capacity Is provided.
- the heat treatment system according to the invention requires too their operation a very small amount of refrigerant, if according to another embodiment of the invention in the treatment chamber behind each other two heat exchangers are switched and if only one heat exchanger is designed as an evaporator for the refrigerant while the other heat exchanger for circulating a refrigerant or water or heat carrier with an external one Coolant unit is connected.
- the drawing shows a treatment chamber 1, which in a common housing 2 a heat exchanger 3 and a Oven area 4 has, in which a batch 5 with located the workpieces to be treated. Behind the heat exchanger 3, a fan 6 is arranged, through which it becomes possible to use a quenching gas within the treatment chamber 1 through the batch 5 and the heat exchanger. 3 circulate through it.
- the drawing also shows a reservoir 7 for liquid nitrogen. From this reservoir 7 fills a smaller amount of nitrogen in an intermediate container 8, from which liquid nitrogen by opening a Valve 9 are filled in the heat exchanger 3 can.
- evaporated nitrogen is able via a line 10 in a gas collection container 11 to arrive.
- a line 12 in which a valve 13 is connected is, the intermediate container 8 with the pressure the gas collection container 11 are acted upon to liquid Nitrogen from the intermediate container 8 in the heat exchanger 3 to press.
- the evaporated in the heat exchanger 3 Nitrogen passes through a check valve 14 in the Line 10 and thereby in the gas collection container 11. Bei too high pressures leaves a pressure relief valve 15 nitrogen into the atmosphere.
- To flood the treatment chamber 1 with nitrogen from the gas collecting container 11 the line 10 via a valve 16 with the treatment chamber 1 connected.
- the heat treatment of a batch 5 takes place under vacuum, by the batch 5 first, for example, 1000 ° C. is warmed up. During this warm-up phase you fill up the heat exchanger 3 with liquid nitrogen from the intermediate container 8. If you want to start the quenching phase, then one flooded the treatment chamber 1 by opening the valve 16 with gaseous nitrogen as quenching gas and turns on the fan 6. This circulates in the treatment chamber 1 between batch 5 and through the Heat exchanger 3, the quenching gas. Since this is the batch 5 Heat takes off and warms up, it comes with Flow through the heat exchanger 3 to evaporate the in him previously filled liquid nitrogen and thereby to a heat extraction at the quenching gas. The evaporated Nitrogen can flow through the check valve 14 and to enter the conduit 10 into the gas collecting container 11. An overflow valve 17 allows that at a to high pressure in the heat exchanger 3 (e.g., above 6 bar) gas from the heat exchanger 3 into the treatment chamber. 1 flows.
- a to high pressure in the heat exchanger 3 e.g.
- the inventive method also allows a re-liquefaction of vaporized gas in a compressor plant.
- the demands on the purity and quality of the evaporating Gases (coolant) are low.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Furnace Details (AREA)
Description
- 1
- Behandlungskammer
- 2
- Gehäuse
- 3
- Wärmetauscher
- 4
- Ofenbereich
- 5
- Charge
- 6
- Gebläse
- 7
- Vorratsbehälter
- 8
- Zwischenbehälter
- 9
- Ventil
- 10
- Leitung
- 11
- Gassammelbehälter
- 12
- Leitung
- 13
- Ventil
- 14
- Rückschlagklappe
- 15
- Überdruckventil
- 16
- Ventil
- 17
- Überströmventil
Claims (10)
- Verfahren zum Abschrecken von Werkstücken in einer Behandlungskammer mittels eines Abschreckgases, bei dem in einem gemeinsamen Gehäuse der Behandlungskammer ein Ofenbereich und ein Wärmetauscher vorgesehen ist, durch welchen zum Abschrecken der Werkstücke das Abschreckgas umgewälzt wird und der mit einem in dem Wärmetauscher verdampfenden Kältemittel arbeitet, und somit das in die Behandlungskammer eingelassene Abschreckgas als Wärmetransporter zwischen den abzuschreckenden Werkstücken im Ofenbereich und dem Wärmetauscher dient, dadurch gekennzeichnet, dass der Wärmetauscher vor Beginn des Abschreckvorganges, während in der Behandlungskammer Vakuum herrscht, mit dem flüssigen Kältemittel zumindest teilweise gefüllt wird, dass die Kühlung des Abschreckgases durch die Kühlkapazität des Wärmetauschers und das Verdampfen der aus einem Vorratsbehälter entnommenen Einfüllmenge beim Umwälzen des Abschreckgases während des Kühlens einer Charge von Werkstücken erfolgt, wobei die Kühlkapazität des Wärmetauschers aufgrund des Verdampfens der Einfüllmenge beim Umwälzen des Abschreckgases zum vollständigen Kühlen einer Charge von Werkstücken bemessen ist.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass ein Wärmetauscher mit Wärmetauscherflächen von hohem Wärmespeichervermögen verwendet wird.
- Verfahren nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, dass das Befüllen des Wärmetauschers mit dem Kältemittel während des Arbeitens des Ofens erfolgt.
- Verfahren nach zumindest einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das verdampfte Kältemittel in einem Gassammelbehälter gesammelt und als Inertgas weiterverwendet wird.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass das verdampfte Kältemittel zum Fluten der Behandlungskammer nach dem Abschrecken der Werkstücke verwendet wird.
- Verfahren nach zumindest einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Kältemittel flüssiger Stickstoff ist.
- Verfahren nach zumindest einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass eine Behandlungskammer mit zwei hintereinander geschalteten Wärmetauschern verwendet wird und dass nur ein Wärmetauscher durch Verdampfen des Kältemittels betrieben wird, während man in dem anderen Wärmetauscher ein extern in einem Kühlmittelaggregat gekühltes Kältemittel zirkulieren lässt.
- Wärmebehandlungsanlage zur Durchführung des Verfahrens nach zumindest einem der vorangehenden Ansprüche, welche Mittel zur Herstellung eines Vakuums und ein Gebläse (6) aufweist und welche zum Abschrecken von Werkstücken mittels eines Abschreckgases in einem gemeinsamen Gehäuse (2) einer evakuierbaren Behandlungskammer einen Ofenbereich (4) zur Aufnahme einer Charge (5) von Werkstücken und einen Wärmetauscher (3) hat, durch welchen zum Abschrecken der Werkstücke das Abschreckgas mittels des Gebläses (6) umgewälzt wird und der mit einem in dem Wärmetauscher (3) verdampfenden Kältemittel arbeitet, wobei der Wärmetauscher (3) zum zumindest teilweisen Auffüllen mit dem flüssigen Kältemittel ausgebildet ist, dadurch gekennzeichnet, daß die Kühlkapazität des Wärmetauschers (3) aufgrund des Verdampfens der Einfüllmenge beim Umwälzen des abschreckgases zum vollständigen Kühlen einer Charge (5) von Werkstücke bemessen ist, dass die Behandlungskammer über ein Ventil (16) mit einem Gassammelbehälter für das Abschreckgas verbunden ist und dass für das in dem Wärmetauscher (3) verdampfte Kältemittel der Wärmetauscher (3) über eine Rückschlagklappe (14) mit dem Gassammelbehälter (11) verbunden ist.
- Wärmebehandlungsanlage nach Anspruch 8, dadurch gekennzeichnet, dass der Wärmetauscher (3) mit Wärmetauscherflächen von hohem Wärmespeichervermögen ausgestattet ist.
- Wärmebehandlungsanlage nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass in der Behandlungskammer (1) hintereinander zwei Wärmetauscher (3) geschaltet sind und dass nur ein Wärmetauscher als Verdampfer für das Kältemittel ausgebildet ist, während der andere Wärmetauscher zum Zirkulieren eines Kältemittels mit einem externen Kühlmittelaggregat verbunden ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19820083 | 1998-05-06 | ||
DE19820083A DE19820083A1 (de) | 1998-05-06 | 1998-05-06 | Verfahren zum Abschrecken von Werkstücken und Wärmebehandlungsanlage zur Durchführung des Verfahrens |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0955384A2 EP0955384A2 (de) | 1999-11-10 |
EP0955384A3 EP0955384A3 (de) | 2000-01-19 |
EP0955384B1 true EP0955384B1 (de) | 2005-04-13 |
Family
ID=7866757
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99104318A Expired - Lifetime EP0955384B1 (de) | 1998-05-06 | 1999-03-04 | Verfahren zum Abschrecken von Werkstücken und Wärmebehandlungsanlage zur Durchführung des Verfahrens |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0955384B1 (de) |
DE (2) | DE19820083A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8820098B2 (en) | 2011-05-17 | 2014-09-02 | Air Products And Chemicals, Inc. | Method and apparatus for quenching of materials in vacuum furnace |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10054765A1 (de) * | 2000-11-04 | 2002-05-16 | Messer Griesheim Gmbh | Wärmebehandlungsofen mit Tiefkühlsystem |
FR2835907B1 (fr) * | 2002-02-12 | 2004-09-17 | Air Liquide | Installation de trempe par gaz et procede de trempe correspondant |
DE20208536U1 (de) | 2002-05-29 | 2002-09-05 | Schmetz GmbH, 58708 Menden | Wärmebehandlungsanlage |
DE102005051420A1 (de) | 2005-10-27 | 2007-05-03 | Robert Bosch Gmbh | Verfahren und Anlage zur trockenen Umwandlung eines Material-Gefüges von Halbzeugen |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1452062A (en) * | 1972-10-10 | 1976-10-06 | Boc International Ltd | Metal treatment |
DE3346884A1 (de) * | 1983-12-23 | 1985-07-11 | Ipsen Industries International Gmbh, 4190 Kleve | Industrieofen zur waermebehandlung metallischer werkstuecke |
DE3501463A1 (de) * | 1985-01-17 | 1986-07-17 | Linde Ag, 6200 Wiesbaden | Verfahren und vorrichtung zur waermebehandlung von werkstuecken |
GB8928820D0 (en) * | 1989-12-21 | 1990-02-28 | Cambridge Vacuum Eng | Apparatus and method for cooling a furnace load |
DE4422588C2 (de) * | 1994-06-28 | 1999-09-23 | Ald Vacuum Techn Gmbh | Verfahren zum Abschrecken von Werkstücken durch Gase und Wärmebehandlungsanlage zur Durchführung des Verfahrens |
DE4435862C1 (de) * | 1994-10-07 | 1995-08-24 | Leybold Durferrit Gmbh | Verfahren und Vorrichtung zum Abkühlen, insbesondere zum Abschrecken, von Werkstücken durch Gase |
EP0754768B1 (de) * | 1995-07-21 | 2001-06-13 | Ipsen International GmbH | Ofen zur Wärmebehandlung von Chargen metallischer Werkstücke |
-
1998
- 1998-05-06 DE DE19820083A patent/DE19820083A1/de not_active Ceased
-
1999
- 1999-03-04 DE DE59911888T patent/DE59911888D1/de not_active Expired - Lifetime
- 1999-03-04 EP EP99104318A patent/EP0955384B1/de not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8820098B2 (en) | 2011-05-17 | 2014-09-02 | Air Products And Chemicals, Inc. | Method and apparatus for quenching of materials in vacuum furnace |
Also Published As
Publication number | Publication date |
---|---|
DE19820083A1 (de) | 1999-11-11 |
EP0955384A2 (de) | 1999-11-10 |
DE59911888D1 (de) | 2005-05-19 |
EP0955384A3 (de) | 2000-01-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE602004008461T2 (de) | Verfahren zum kühlen eines produkts, besonders zur verflüssigung eines gases und vorrichtung für die durchführung dieses verfahrens | |
EP0061721B1 (de) | Mehrstufige Einrichtung mit Arbeitsfluid- und Absorptionsmittel-Kreisläufen, und Verfahren zum Betrieb einer solchen Einrichtung | |
DE3025050C2 (de) | ||
EP0690138B1 (de) | Verfahren zum Abschrecken von Werkstücken durch Gase und Wärmebehandlungsanlage zur Durchführung des Verfahrens | |
DE69736219T2 (de) | Absorptionsanlage zum Kühlen oder zum Heizen | |
EP2710311B1 (de) | Verfahren zum betreiben einer zyklisch arbeitenden thermischen adsorbtionswärme- oder -kälteanlage und vorrichtung | |
DE69917722T2 (de) | Gefriertrocknung mit reduziertem Kryogenmittelverbrauch | |
EP0301117B1 (de) | Einrichtung zur Gefriertrocknung | |
DE1628440A1 (de) | Verfahren zur schnellen Verminderung des Druckes eines Gasgemisches innerhalb einer Kammer und Vakuumsystem zur Durchfuehrung dieses Verfahrens | |
EP0046196B1 (de) | Verfahren zum Betreiben einer monovalent alternativen Absorptionsheizanlage | |
DE3330146A1 (de) | Vorrichtung und verfahren zur schnellen regeneration von autonomen kryopumpen | |
EP0955384B1 (de) | Verfahren zum Abschrecken von Werkstücken und Wärmebehandlungsanlage zur Durchführung des Verfahrens | |
DE2639187C3 (de) | Verfahren zur Nutzung von Abwärme | |
DE68911790T2 (de) | Luftgekühltes Absorptionsklimagerät. | |
EP0724014A2 (de) | Verfahren und Anlage zur Brauwasserkühlung | |
DE19940371A1 (de) | Verfahren und Vorrichtung zur Gewinnung von Kohlendioxid aus Abgasen | |
DE102007062343B4 (de) | Verfahren und Anordnung zur Kälteerzeugung nach einem Wasser-Lithiumbromid-Resorptionskälteprozess | |
EP2474797A1 (de) | Verfahren und Vorrichtung zur Gebäudeklimatisierung | |
DE19726286A1 (de) | Thermisch angetriebene Sorptionskälteanlage mit Behälterpaaren | |
DE102020110357B4 (de) | Verfahren zur Regelung eines hybriden Kühlsystems | |
DE2219083A1 (de) | Absorptionskaelteanlage | |
DE2025999C3 (de) | Gefriertrocknungsanlage | |
DE19619793C2 (de) | Einrichtung und Verfahren zur Rückgewinnung von als Abwärme in einem Medium enthaltener Wärmeenergie | |
DE2924307C2 (de) | Verfahren zum Übertragen von Wärme und Vorrichtung zur Durchführung des Verfahrens | |
EP1030135A1 (de) | Verfahren und Einrichtung zur geregelten Kühlung durch Verdampfen flüssigen Stickstoffs |
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 |
Kind code of ref document: A2 Designated state(s): DE DK ES FR GB IT NL SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ALD VACUUM TECHNOLOGIES AG |
|
17P | Request for examination filed |
Effective date: 20000707 |
|
AKX | Designation fees paid |
Free format text: DE DK ES FR GB IT NL SE |
|
17Q | First examination report despatched |
Effective date: 20020228 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAJ | Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted |
Free format text: ORIGINAL CODE: EPIDOSDIGR1 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE DK ES FR GB IT NL SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20050413 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050413 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20050421 |
|
REF | Corresponds to: |
Ref document number: 59911888 Country of ref document: DE Date of ref document: 20050519 Kind code of ref document: P |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20050713 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20050713 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20050724 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
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 |
|
ET | Fr: translation filed | ||
26N | No opposition filed |
Effective date: 20060116 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20140328 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20140319 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20140319 Year of fee payment: 16 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59911888 Country of ref document: DE |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20150304 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20151130 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150304 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20151001 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150331 |