EP0946848A2 - Operating method and device for a shaft furnace - Google Patents
Operating method and device for a shaft furnaceInfo
- Publication number
- EP0946848A2 EP0946848A2 EP97948806A EP97948806A EP0946848A2 EP 0946848 A2 EP0946848 A2 EP 0946848A2 EP 97948806 A EP97948806 A EP 97948806A EP 97948806 A EP97948806 A EP 97948806A EP 0946848 A2 EP0946848 A2 EP 0946848A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- oxygen
- lance
- jet
- combination
- furnace
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/20—Arrangements of devices for charging
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/02—Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
- C21B5/023—Injection of the additives into the melting part
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/16—Arrangements of tuyeres
Definitions
- the invention relates to a method for operating a shaft furnace, in particular a cupola furnace, to which metallic feedstocks, alloying elements and energy sources, such as coke, are added in the upper part of the shaft and an oxidation medium, such as air, is added in the lower part of the shaft, additives, namely alloying elements, metal chips or dusts are fed.
- dusts in the nozzle level for the cupola furnace furnace wind have been blown in the foundry and in the cupola furnace operation (EP 0 504 700 A1.
- Such dust are, for example, filter dust from cupola furnace dedusting, foundry sands no longer to be processed, dust from the blow room and grinding shop, etc.
- These dusts contain, among other things, Si0 2 , which can be used as a slag generator for the cupola furnace melting process, but also combustible organic components, the calorific value of which can be used for the melting process.
- the calorific value of the combustible constituents of the dusts is used as melting energy and the Si0 2 as a slag generator.
- Problematic constituents of the dusts such as heavy metals, are integrated into the slag in an environmentally-friendly manner, for example glazed. All of these additives introduced into the melting zone of the cupola furnace must be blown in under different and sometimes opposing conditions. While a reducing atmosphere at the injection point is required for the alloy elements, oxidizing must be carried out for dusts with high calorific value. In the case of low-calorific value dusts, it makes sense to include an energy source so that the slagging of the SiO 2 portion of these dusts does not come at the expense of the coke set.
- the invention has for its object to provide a method and an apparatus with which the different requirements described when using the additives mentioned are satisfied, an undesired lowering of the melting temperature is avoided and the formation of pollutants, in particular NO x , can be prevented to an unacceptable extent.
- a method according to claim 1 and a device according to claim 5 serve to achieve this object.
- Advantageous refinements of the invention are specified in the subclaims.
- the introduction conditions of the additives, the fuel and the additionally introduced oxygen can be designed, in particular the speeds set so high, that no flame forms. This allows the emergence Avoid environmentally harmful NO x compounds and the burning of valuable components such as alloying elements.
- the method according to the invention is suitable for all common types of cupolas, e.g. Furnaces operated with hot wind, warm wind, cold wind, secondary wind, fed and unlined furnace types, long-term furnaces, interchangeable furnaces, shuttle furnaces etc. are equally suitable.
- the feedstock of such ovens can include
- wind As known, air (“wind”), which is either preheated (hot wind, warm wind) or has ambient temperature (cold wind), is fed to the furnace as an oxidizing medium via one or more rows of nozzles. This air can be enriched with oxygen.
- the method according to the invention is suitable for all furnace sizes.
- one or more of the claimed combination lances for introducing the additives are installed in the melting plane of the cupola furnace.
- the first substance can be an alloying element, such as a
- Carburizing agent FeSi, SiC or the like
- dust e.g. cupola furnace dust, Used sand, cleaning dust, etc.
- iron shavings a mixture of the aforementioned substances.
- the second substance is used to set the oxidative or reductive conditions that are necessary for the respective use of the first substance. It can consequently be both gaseous, liquid, solid, calorific value-containing substances, predominantly carbon-containing or hydrocarbon-containing substances.
- the third substance compensates for the lowering of the melting temperature caused by the use of the first two substances. It is therefore oxygen that escapes from the facility predominantly at supersonic speed.
- the three material flows can be regulated separately from each other in the range of 0% - 100%.
- the optimal setting depends on the type, amount and composition of substance 1 as well as the respective requirements of the melting shop.
- the introduction conditions via the or each combination lance are designed in such a way, in particular the introduction speeds are chosen so that, under all possible operating parameters, the occurrence of a flame directly in front of the lance is prevented. It is advantageous to introduce the combination lance of oxygen in the second jet at supersonic speed, preferably in the range from 1.5 to 2.5 Mach, and of the additives and fuels in the first jet at maximum speed of sound. This guarantees optimal effectiveness of the process and prevents an increase in NOx values.
- oxygen can be fed to the cupola furnace via separate oxygen lances, predominantly at supersonic speeds.
- the combination lances according to the invention and the oxygen injection lances for the additional introduction of oxygen are preferably introduced into the existing wind nozzles (water-cooled copper nozzles or uncooled stamped nozzles) built-in. However, it is also possible to install these devices and the additional oxygen injection lances in separate feeders in the melting plane of the cupola furnace.
- the iron analysis can be controlled by the use of cast or steel chips and the iron temperature can be reduced if necessary.
- Fig. 1 shows a vertical section through a cupola furnace
- FIG. 2 shows an enlarged partial section through the furnace wall at the level of the melting zone through an inlet duct for the wind, into which a device according to the invention is inserted;
- Fig. 3 shows a longitudinal section along the line III-III in Fig. 4 by a
- Fig. 5 shows an enlarged section like Fig. 4 in a modified
- Fig. 6 is a partial section similar to Fig. 2 at the level of the melting zone through an inlet channel for the wind, in one
- Oxygen injection lance is used; 7, 8 and 9 cross sections through the melting zone of the cupola with an arrangement of combination lances according to FIGS. 2 to 5 and oxygen injection lances according to FIG. 6 in three variants.
- Fig. 1 shows a cupola furnace known in principle with a shaft, in the upper part 1 metallic feedstocks, alloying elements and energy carriers, such as coke, and in the lower part 2, an oxidation medium, such as air, - the so-called furnace wind - via a wind ring 3 and from there is introduced into the melting zone 5 via introduction channels 4.
- Combination lances according to the invention designated overall by reference number 6, are inserted into at least two diagonally opposite insertion channels 4.
- the combination lance 6 is provided with lines 9 for oxygen and 10 for fuel, such as combustible gases, and with a central feed line 11 for additives, such as dusts, used foundry sands, alloy elements, metal chips, carbon and the like.
- the reference numerals 9 'and 10' denote individually operable shut-off valves for lines 9 and 10.
- the structure of the combination lance 6 can be seen in detail from FIGS. 3 to 5.
- a protective tube 12 surrounds two lances arranged in parallel, namely a material lance 13 and an oxygen lance 16.
- the material lance 13 comprises an outer tube 14 for supplying fuel, such as fuel gases (methane, natural gas or the like), Via the line 9 and an inner tube 15 separated from it via an annular gap 14 'for transporting the fuel for supplying additives, such as dusts via the line 11.
- the oxygen lance 16 runs parallel to the substance lance 13, and preferably at a distance X from the latter Outer tube 14 and a distance Y from the inner tube 15, as shown in Fig. 5.
- the distance X is preferably in a range equal to the inner diameter of the oxygen lance 16 and ten times this inner diameter, while the distance Y is preferably in a range between twice and twenty times the inner diameter of the oxygen lance 16.
- the oxygen lance 16 is covered by the fabric lance 13.
- the feed line 10 leads into this oxygen lance 16.
- the oxygen lance 16 In its mouth, the oxygen lance 16 has a Laval nozzle 18, as indicated in FIG. 5 and shown in FIG. 6 for a separate oxygen injection lance 20 in axial section. Because of this Laval nozzle, the oxygen is blown into the melting zone 5 at supersonic speed via the oxygen lance 16 and also via the oxygen injection lance 20 according to FIG. 6.
- oxygen or the fuel gas supplied here is also blown into the fabric lance 13 via the annular gap 14 ′ at the maximum at the speed of sound. Oxygen can also be added to the dust or other additives supplied via the inner tube 15. Here, too, the speed of sound is not exceeded when blowing in.
- FIG. 6 shows, in the same representation as FIG. 2, an oxygen injection lance 20 inserted into another inlet duct 4 for furnace winds with a Laval nozzle 18 inserted into the mouth.
- 6 21 denotes an oxygen line
- 22 a shut-off valve
- 23 a quick-release coupling
- 24 a lance holder for the oxygen injection lance 20.
- the devices 23 and 24 can of course also be provided on the combination lance 6.
- the operator can briefly, for example daily depending on the batch to be used, the operating conditions, the results of analyzes of the furnace content and the fuels and additives that are currently being injected decide whether and to what extent and where it additionally blows in oxygen and additives.
- the introduction conditions in particular the blowing speeds, are so high that there is no flame in the immediate vicinity of the mouth 25 in the Furnace interior 26 forms. This avoids the burning of valuable components such as alloying elements and the like and also prevents the formation of environmentally harmful NO x compounds to an unacceptable extent.
- combination lances 6 according to FIGS. 2 to 5 are inserted diagonally opposite one another into the introduction channels 4 at points 70, 73, while at points 71, 72; 74, 75 oxygen injection lances 20 according to FIG. 6 are used.
- combination lances 6 are again used diagonally opposite one another at points 90, 93.
- Oxygen injection lances are arranged diagonally opposite one another at points 91, 94, while the Feeding channels for the furnace wind at the locations 92, 95, which are also diagonally opposite, are left empty.
- the operator is given great freedom when driving the cupola furnace, which enables him to quickly adapt to changing analysis results, operating conditions, batches, and the introduction of different additives and fuels, so that always can achieve a quality close to the attainable optimum of the melt with a minimum of environmental pollution.
- the introduction of dust and used sands enables eluate-safe waste disposal.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Heat Treatment Of Articles (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Flexible Shafts (AREA)
- Manufacture Of Iron (AREA)
- Blast Furnaces (AREA)
- Passenger Equipment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19646802A DE19646802A1 (en) | 1996-11-13 | 1996-11-13 | Method and device for operating a shaft furnace |
DE19646802 | 1996-11-13 | ||
PCT/EP1997/005906 WO1998021536A2 (en) | 1996-11-13 | 1997-10-25 | Operating method and device for a shaft furnace |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0946848A2 true EP0946848A2 (en) | 1999-10-06 |
EP0946848B1 EP0946848B1 (en) | 2001-12-19 |
Family
ID=7811481
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97948806A Expired - Lifetime EP0946848B1 (en) | 1996-11-13 | 1997-10-25 | Operating method and device for a shaft furnace |
Country Status (9)
Country | Link |
---|---|
US (1) | US6187258B1 (en) |
EP (1) | EP0946848B1 (en) |
AT (1) | ATE211250T1 (en) |
AU (1) | AU7180698A (en) |
DE (2) | DE19646802A1 (en) |
ES (1) | ES2170421T3 (en) |
TW (1) | TW365644B (en) |
WO (1) | WO1998021536A2 (en) |
ZA (1) | ZA979426B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1739194A1 (en) * | 2005-07-02 | 2007-01-03 | Messer France S.A.S. | Method of supersonic injection of an oxidationagent in a melting furnace |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3527117B2 (en) | 1998-12-24 | 2004-05-17 | 富士電機デバイステクノロジー株式会社 | Method and apparatus for manufacturing semiconductor dynamic quantity sensor |
DE19954556A1 (en) * | 1999-11-12 | 2001-05-23 | Messer Griesheim Gmbh | Process for operating a melting furnace |
DE10060727A1 (en) * | 2000-12-07 | 2002-06-27 | Messer Griesheim Gmbh | Positioning device for fuel / oxygen lances |
US6835229B2 (en) | 2002-01-22 | 2004-12-28 | Isg Technologies Inc. | Method and apparatus for clearing a powder accumulation in a powder delivery tube |
EP2208953A1 (en) * | 2009-01-05 | 2010-07-21 | Paul Wurth Refractory & Engineering GmbH | Bustle pipe arrangement |
EP2407742B1 (en) * | 2010-07-13 | 2016-11-09 | Thorsten Kutsch | Method and device for operating a shaft furnace |
EP2626628B1 (en) * | 2012-02-09 | 2014-04-09 | Linde Aktiengesellschaft | Firing of an industrial furnace and associated burner |
EP3511431A1 (en) * | 2018-01-10 | 2019-07-17 | Fiday Gestion | Method and facility for reclamation of used batteries and storage cells |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1259738A (en) * | 1960-06-11 | 1961-04-28 | British Iron Steel Research | Method and apparatus for the production of cast iron in a blast furnace |
FR2070864A1 (en) * | 1969-12-15 | 1971-09-17 | Jones & Laughlin Steel Corp | Blast furnace - injection of oxidising gas independently - of the blast to improve prodn |
US3892517A (en) * | 1972-10-19 | 1975-07-01 | Black Sivalls & Bryson Inc | Appartus for generating a heated oxygen enriched gas stream |
GB2018295A (en) * | 1978-01-17 | 1979-10-17 | Boc Ltd | Process for melting metal in a vertical shaft furnace |
GB8506655D0 (en) * | 1985-03-14 | 1985-04-17 | British Steel Corp | Smelting shaft furnaces |
DE3811166A1 (en) * | 1988-03-31 | 1989-10-19 | Linde Ag | METHOD FOR OPERATING A KUPOLOF |
JP2721423B2 (en) * | 1990-09-14 | 1998-03-04 | 大阪瓦斯株式会社 | Waste melting furnace |
DE4109214A1 (en) * | 1991-03-21 | 1992-09-24 | Linde Ag | METHOD FOR OPERATING A COUPLING OVEN |
FR2702221B1 (en) * | 1993-03-03 | 1995-04-28 | Air Liquide | Process for obtaining metal from the blast furnace or cupola. |
DE4310931C2 (en) * | 1993-04-02 | 1999-04-15 | Air Prod Gmbh | Method and device for disposing of dusts by burning / slagging in a cupola furnace |
DE4407230C2 (en) * | 1994-03-04 | 1996-06-05 | E S C H Engineering Service Ce | Process for recycling solid residues in a coke-heated shaft furnace |
ATA208795A (en) * | 1995-12-21 | 1999-01-15 | Voest Alpine Ind Anlagen | METHOD FOR PROCESSING A LIGHT SHREDDER FRACTION IN A MELT AND DEVICE FOR CARRYING OUT THE METHOD |
-
1996
- 1996-11-13 DE DE19646802A patent/DE19646802A1/en not_active Ceased
-
1997
- 1997-10-21 TW TW086115547A patent/TW365644B/en active
- 1997-10-21 ZA ZA9709426A patent/ZA979426B/en unknown
- 1997-10-25 AU AU71806/98A patent/AU7180698A/en not_active Abandoned
- 1997-10-25 WO PCT/EP1997/005906 patent/WO1998021536A2/en active IP Right Grant
- 1997-10-25 DE DE59705923T patent/DE59705923D1/en not_active Expired - Lifetime
- 1997-10-25 EP EP97948806A patent/EP0946848B1/en not_active Expired - Lifetime
- 1997-10-25 AT AT97948806T patent/ATE211250T1/en active
- 1997-10-25 ES ES97948806T patent/ES2170421T3/en not_active Expired - Lifetime
- 1997-10-25 US US09/308,012 patent/US6187258B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9821536A2 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1739194A1 (en) * | 2005-07-02 | 2007-01-03 | Messer France S.A.S. | Method of supersonic injection of an oxidationagent in a melting furnace |
Also Published As
Publication number | Publication date |
---|---|
DE59705923D1 (en) | 2002-01-31 |
ES2170421T3 (en) | 2002-08-01 |
AU7180698A (en) | 1998-06-03 |
US6187258B1 (en) | 2001-02-13 |
WO1998021536A3 (en) | 1998-10-29 |
DE19646802A1 (en) | 1998-05-14 |
ZA979426B (en) | 1998-05-12 |
ATE211250T1 (en) | 2002-01-15 |
TW365644B (en) | 1999-08-01 |
WO1998021536A2 (en) | 1998-05-22 |
EP0946848B1 (en) | 2001-12-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3318005C2 (en) | Process for making iron | |
EP0481955B1 (en) | Burner for the combustion of solid fuels of fine-grained to powdery consistency | |
WO2000012767A1 (en) | Method for producing a metal melt and corresponding multfunction lance | |
DE69817662T2 (en) | Burner for the injection of particles | |
DE2737832B2 (en) | Use of blower nozzles with variable cross-section for the production of stainless steels | |
EP1466022A1 (en) | Method for the pyrometallurgical treatment of metals, metal melts and/or slags and injection device | |
DE3011631C2 (en) | Process for operating a pulverized coal boiler and pulverized coal boiler set up for the process | |
EP0182775A2 (en) | Process for the production of molten pig iron or steel pre-products as well as arrangement for carrying out the process | |
EP0946848B1 (en) | Operating method and device for a shaft furnace | |
EP2166284B1 (en) | Rotary drum furnace and method of operating | |
EP0236669A1 (en) | Method for producing molten pig iron or steel pre-material | |
DE4310931C2 (en) | Method and device for disposing of dusts by burning / slagging in a cupola furnace | |
EP1997915A1 (en) | Method for controlled coke burning in cupola furnaces | |
EP0614060A1 (en) | Process and equipment for melting iron alloy | |
DE4238020A1 (en) | Procedure for the operation of a multimedia nozzle and the nozzle system | |
WO1988005149A1 (en) | Process and device for introducing additives into a cupola or shaft furnace | |
DE3315431A1 (en) | METHOD FOR INCREASING THE WIND TAMPERATURE IN A BLAST STOVE | |
DE19648306A1 (en) | Treatment of shredded scrap light constituents in a melt | |
DE935845C (en) | Process and device for refining ores | |
EP0521523B1 (en) | Process for running a cupola | |
EP0865506A1 (en) | Process for producing liquid metal and facilities for carrying out the process | |
EP3578909A1 (en) | Device and method for inserting a replacement reduction agent into a blast furnace | |
DE3921807A1 (en) | METHOD AND DEVICE FOR HEATING A METALURGIC OVEN | |
AT402440B (en) | BURNER | |
WO2004092422A2 (en) | Method for improving energy supply to a scrap metal pile |
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 |
|
17P | Request for examination filed |
Effective date: 19990614 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH DE ES FI FR GB GR IT LI NL SE |
|
17Q | First examination report despatched |
Effective date: 20000503 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
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 ES FI FR GB GR IT LI NL SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR 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: 20011219 Ref country code: GB 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: 20011219 Ref country code: FI 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: 20011219 |
|
REF | Corresponds to: |
Ref document number: 211250 Country of ref document: AT Date of ref document: 20020115 Kind code of ref document: T |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
REF | Corresponds to: |
Ref document number: 59705923 Country of ref document: DE Date of ref document: 20020131 |
|
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: 20020319 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: SCHMAUDER & PARTNER AG PATENTANWALTSBUERO |
|
ET | Fr: translation filed | ||
GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 20011219 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2170421 Country of ref document: ES Kind code of ref document: T3 |
|
RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: MESSER GRIESHEIM GMBH |
|
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 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20021031 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PFA Free format text: MESSER GRIESHEIM GMBH,FRANKFURT AIRPORT CENTER 1, C9, HUGO-ECKENER-RING,60547 FRANKFURT (DE) -DANN IN- MESSER GRIESHEIM GMBH,FRITZ-KLATTE-STRASSE 6,65933 FRANKFURT AM MAIN (DE) |
|
NLT2 | Nl: modifications (of names), taken from the european patent patent bulletin |
Owner name: MESSER GRIESHEIM GMBH |
|
26N | No opposition filed | ||
BERE | Be: lapsed |
Owner name: *MESSER GRIESHEIM G.M.B.H. Effective date: 20021031 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: RN |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: FC |
|
NLS | Nl: assignments of ep-patents |
Owner name: MESSER GROUP GMBH Effective date: 20071003 |
|
NLT1 | Nl: modifications of names registered in virtue of documents presented to the patent office pursuant to art. 16 a, paragraph 1 |
Owner name: AIR LIQUIDE DEUTSCHLAND GMBH |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20071003 Year of fee payment: 11 Ref country code: ES Payment date: 20071120 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20081031 Year of fee payment: 12 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20090501 |
|
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 NON-PAYMENT OF DUE FEES Effective date: 20090501 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PCAR Free format text: SCHMAUDER & PARTNER AG PATENT- UND MARKENANWAELTE VSP;ZWAENGIWEG 7;8038 ZUERICH (CH) |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20081027 |
|
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 NON-PAYMENT OF DUE FEES Effective date: 20081027 |
|
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: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20091031 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20091031 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20140925 Year of fee payment: 18 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20141013 Year of fee payment: 18 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 211250 Country of ref document: AT Kind code of ref document: T Effective date: 20151025 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20151025 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20151025 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20160919 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20161020 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 59705923 Country of ref document: DE |