EP0053848B1 - Procédé d'insufflation de gaz à teneur élevée en oxygène dans un bain de fusion de métaux non-ferreux - Google Patents
Procédé d'insufflation de gaz à teneur élevée en oxygène dans un bain de fusion de métaux non-ferreux Download PDFInfo
- Publication number
- EP0053848B1 EP0053848B1 EP81201257A EP81201257A EP0053848B1 EP 0053848 B1 EP0053848 B1 EP 0053848B1 EP 81201257 A EP81201257 A EP 81201257A EP 81201257 A EP81201257 A EP 81201257A EP 0053848 B1 EP0053848 B1 EP 0053848B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- slag
- nozzles
- temperature
- process according
- pressure
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/12—Dry methods smelting of sulfides or formation of mattes by gases
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B13/00—Obtaining lead
- C22B13/02—Obtaining lead by dry processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0028—Smelting or converting
- C22B15/003—Bath smelting or converting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0028—Smelting or converting
- C22B15/003—Bath smelting or converting
- C22B15/0041—Bath smelting or converting in converters
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
Definitions
- the invention relates to a method for blowing in highly oxygen-containing gases into a molten bath containing non-ferrous metals by means of double tube nozzles immersed in the melt through the reactor wall, a protective fluid being blown in as a coolant through the annular space between the inner and outer tube of each double tube nozzle.
- gases containing high oxygen - technically pure oxygen or gases enriched with oxygen - are blown into a melt.
- Such processes e.g. Non-ferrous metals or stone phases enriched with non-ferrous metals produced from sulphide ores or refined melts containing non-ferrous metals.
- the high-oxygen gases are blown into the melt from the bottom or from the side through the masonry of a reactor using nozzles.
- a protective fluid is blown in to protect the nozzles and the surrounding masonry against the high temperatures occurring at the nozzles. This is done using double tube nozzles.
- the inner tube is generally used to inject the highly oxygen-containing gas and the protective fluid that cools through the annular space between the inner and outer tubes.
- Such methods are e.g. B. from DE-OS 2 417 979 and DE-OS 2 807 964 known.
- the invention is based, to reduce or avoid the wear of the double tube nozzles and the surrounding masonry when blowing in highly oxygen-containing gases with protective fluids in melting baths containing non-ferrous metals.
- the amount of protective fluid is adjusted depending on the composition of the slag and the temperature difference of the slag from the solidification point in such a way that approaches are formed on the nozzles on the one hand, and on the other hand the approaches do not exceed a desired thickness.
- the thickness of the lugs on the nozzles and the surrounding masonry is chosen so that the desired protection is achieved on the one hand, but on the other hand the lugs are gas-permeable and gas distribution is achieved. The thickness depends on the operating conditions of the process and is determined empirically. In the case of continuous processes, the required amount of protective fluid remains largely constant, whereas in batch-operated processes it has to be regulated in larger areas.
- Flammable and non-flammable gases or liquids such as nitrogen, SO 2 , CO 2 , water vapor, hydrocarbons, can be used as protective fluids. Your selection depends on the procedural conditions.
- the amount of protective fluid required to generate the batches depends on the solidification temperature of the slag or high-melting components of the slag and the temperature difference of the slag from this solidification temperature before it comes into contact with the protective fluid.
- the outlet cross section for the protective fluid should be as small as possible and the protective fluid should be blown in under high pressure, for example above 6 bar, so that the required amount of protective fluid can be kept as small as possible.
- a preferred embodiment consists in that the composition and temperature of the slag is adjusted so that even with a slight local cooling of the slag at the nozzles, the crystallization temperature of high-melting constituents - originally dissolved in the slag - is not reached.
- the composition of the slag is adjusted so that it is almost saturated with high-melting compounds, such as magnetite, calcium silicates or similar compounds. This is achieved by a corresponding chemical composition of the slag, a corresponding oxidation potential, which depends on the desired metal-sulfide-oxide balance of the non-ferrous metal to be obtained, and by a corresponding temperature of the slag, which is just above the saturation temperature for the high-melting point Connections. This creates a good build-up with small amounts of protective fluids.
- a preferred embodiment consists in that the stirring effect of the gases blown in through the nozzles is adjusted such that an emulsion of slag and metal reaches the nozzles regardless of the layer height of a metal bath on the bottom of the reactor.
- the stirring effect of the injected gases can be regulated by adjusting their pressure or quantity accordingly and / or by adjusting the thickness of the metal layer above the nozzles. This also creates a good approach.
- a preferred embodiment consists in that the thickness of the lugs is adjusted to a desired value by regulating the pressure rise of the flowing protective fluid compared to the original pressure. Due to the build-up, there is an increase in pressure compared to that exists before the formation of the batch. The value of the pressure increase depends on the thickness and the shape of the approaches. The value of the pressure rise, which corresponds to the desired thickness of the approaches, is determined empirically and adhered to. In most cases, a pressure increase of around 0.1 to 0.5 bar is sufficient. This allows the thickness of the approaches to be regulated in a simple manner, although direct observation is not possible.
- a preferred embodiment of the invention consists in that the desired value of the pressure is regulated by keeping the pressure constant. Only the pressure is kept constant and the volume adjusts to the corresponding value. This enables a particularly simple and effective regulation of the thickness of the approaches.
- a preferred embodiment is that the reactor is bricked up depending on the composition of the slag and temperature in such a way that a constant film of high-melting constituents forms on the masonry.
- the lining is chosen so that the heat radiation cools the slag on the inside in such a way that a thin starting film is formed. This also protects the masonry in the vicinity of the nozzles, on which no deposits form due to the direct action of the protective fluid.
- the examples relate to the continuous oxidation of sulfidic concentrates in a refractory-lined reactor in the form of a horizontal cylinder with a length of 4.50 m and a diameter of 1.80 m.
- Additives were added to the sulfidic concentrates in order to produce slags of a certain chemical composition suitable for carrying out the process according to the invention.
- the reactor was equipped with 3 double tube nozzles with an inner tube diameter of 10 mm and a propane-oxygen auxiliary burner in order to be able to influence the temperature of the melt independently of the chemical-metallurgical reactions taking place.
- the examples are limited to the oxidation of sulfidic lead concentrates, the slags formed here behave particularly aggressively because of their lead oxide content in relation to all metallic and ceramic materials known in the art.
- the measures described in the examples for protecting the nozzles and masonry of the reactor can therefore be appropriately applied to the melting of a number of other non-ferrous metal-containing precursors and intermediates, including concentrates, stones, food, slags, dusts and sludges with contents Transfer copper, nickel, cobalt, zinc, lead, tin, antimony or bismuth.
- the mouthpiece of the third nozzle had been covered with a porous, cone-shaped attachment of approximately 30 mm in height and 50 mm in base diameter, which consisted of 70% magnetite and 30% different silicates.
- the masonry in the vicinity of the other two nozzle mouthpieces had funnel-shaped traces of corrosion about 50 or 100 mm in diameter, the depth of which corresponded to the nozzle burn-off. In contrast, the masonry around the third nozzle was completely preserved.
- Example 1 To test the influence of overheating of the slag, three tests were carried out at different temperatures of the slag. The flow rates of the protective fluid (6.9 bar nitrogen pressure) used in Example 1 for the second nozzle were set here. At the end of the tests, the nozzles were again drawn and measured:
- the reactor was successively filled with a pure lead oxide slag (PbO) and a lead silicate slag with the approximate composition 2Pb0 - Si0 2 .
- PbO lead oxide slag
- a slag temperature of 930 ° C was set, while the nozzles were operated with oxygen and a nitrogen pressure of 6.9 bar.
- no mixture of concentrate and additives was added in order not to change the composition of the slag.
- neither of the two experiments could a firm approach be created in front of the nozzle mouthpieces.
- the nozzles and the surrounding masonry were almost destroyed:
- the thickness of the metallic soil phase must be taken into account, provided that it consists of a low-melting metal.
- the advantages of the invention are that the nozzles and the surrounding masonry are protected from chemical attack and erosion by the molten phase with simple means, the amount of protective fluid is kept to a minimum and nevertheless a good gas distribution in the melt is achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Furnace Charging Or Discharging (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Furnace Details (AREA)
Claims (6)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3045992 | 1980-12-05 | ||
DE19803045992 DE3045992A1 (de) | 1980-12-05 | 1980-12-05 | Verfahren zum einblasen von hochsauerstoffhaltigen gasen in ein ne-metalle enthaltendes schmelzbad |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0053848A1 EP0053848A1 (fr) | 1982-06-16 |
EP0053848B1 true EP0053848B1 (fr) | 1984-10-24 |
EP0053848B2 EP0053848B2 (fr) | 1987-10-14 |
Family
ID=6118459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81201257A Expired EP0053848B2 (fr) | 1980-12-05 | 1981-11-11 | Procédé d'insufflation de gaz à teneur élevée en oxygène dans un bain de fusion de métaux non-ferreux |
Country Status (17)
Country | Link |
---|---|
US (1) | US4435211A (fr) |
EP (1) | EP0053848B2 (fr) |
JP (1) | JPS57120626A (fr) |
KR (1) | KR890002800B1 (fr) |
AU (1) | AU542613B2 (fr) |
BR (1) | BR8107861A (fr) |
CA (1) | CA1180194A (fr) |
DE (2) | DE3045992A1 (fr) |
ES (1) | ES507717A0 (fr) |
FI (1) | FI68659C (fr) |
IN (1) | IN152960B (fr) |
MA (1) | MA19349A1 (fr) |
MX (1) | MX156287A (fr) |
PH (1) | PH19449A (fr) |
PL (1) | PL234079A1 (fr) |
YU (1) | YU42003B (fr) |
ZA (1) | ZA817664B (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4014835A1 (de) * | 1989-05-12 | 1990-11-15 | Air Liquide | Verfahren zur oxidationsbehandlung eines fluessigen bades |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4661153A (en) * | 1983-07-01 | 1987-04-28 | Southwire Company | Refractory porous plug |
DE3814310A1 (de) * | 1988-04-28 | 1989-11-09 | Messer Griesheim Gmbh | Verfahren zur raffination von si-metall und si-eisenlegierungen |
CA2041297C (fr) * | 1991-04-26 | 2001-07-10 | Samuel Walton Marcuson | Convertisseur et methode de gonflage par le haut d'un metal non ferreux |
US5435833A (en) * | 1993-09-30 | 1995-07-25 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process to convert non-ferrous metal such as copper or nickel by oxygen enrichment |
US5814126A (en) * | 1994-01-12 | 1998-09-29 | Cook; Thomas H. | Method and apparatus for producing bright and smooth galvanized coatings |
DE4429937A1 (de) * | 1994-08-24 | 1996-02-29 | Metallgesellschaft Ag | Verfahren zum Verblasen von NE-Metall-Schrott und Hütten-Zwischenprodukten |
DE19638148A1 (de) * | 1996-09-18 | 1998-03-19 | Linde Ag | Sauerstofflanze und Verfahren zum Verblasen von flüssigem Metall |
DE10253535A1 (de) * | 2002-11-16 | 2004-05-27 | Sms Demag Ag | Gaszuleitungssystem für einen metallurgischen Ofen sowie Betriebsverfahren hierzu |
FR2856631B1 (fr) * | 2003-06-26 | 2005-09-23 | Jean Noel Claveau | Procede de decoration d'un article et equipement pour la mise en oeuvre de ce procede |
FR2856630B1 (fr) * | 2003-06-26 | 2006-09-29 | Jean Noel Claveau | Procede de decoration d'un article et equipement pour la mise en oeuvre de ce procede |
FR2881988B1 (fr) * | 2005-02-15 | 2007-06-29 | Jean Noel Claveau | Procede de decoration d'un article et equipement pour la mise en oeuvre de ce procede |
DE102010020179A1 (de) * | 2009-06-09 | 2010-12-16 | Sms Siemag Ag | Verfahren zum Betreiben eines Bodenspülsystems eines BOF-Konverters |
EP2302082B1 (fr) * | 2009-09-03 | 2013-04-17 | Linde AG | Procédé destiné au fonctionnement d'un convertisseur et dispositif d'exécution du procédé |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US443758A (en) | 1890-12-30 | Process of converting copper matte to copper | ||
US3892559A (en) | 1969-09-18 | 1975-07-01 | Bechtel Int Corp | Submerged smelting |
BE748041A (fr) * | 1970-03-26 | 1970-09-28 | Centre Rech Metallurgique | Perfectionnements aux procedes d'affinage, |
LU62933A1 (fr) * | 1971-04-06 | 1973-05-16 | ||
FR2219235B2 (fr) * | 1973-02-26 | 1976-05-14 | Creusot Loire | |
BE795117A (fr) * | 1973-02-07 | 1973-05-29 | Centre Rech Metallurgique | Procede et dispositif pour le convertissage de matieres cuivreuses |
US3941587A (en) * | 1973-05-03 | 1976-03-02 | Q-S Oxygen Processes, Inc. | Metallurgical process using oxygen |
DE2504946C2 (de) | 1975-02-06 | 1980-04-30 | Kloeckner-Werke Ag, 4100 Duisburg | Verfahren und Vorrichtung zum Einschmelzen von Schrott, Eisenschwamm, Pellets oder dgl |
-
1980
- 1980-12-05 DE DE19803045992 patent/DE3045992A1/de not_active Withdrawn
-
1981
- 1981-03-17 IN IN290/CAL/81A patent/IN152960B/en unknown
- 1981-11-05 ZA ZA817664A patent/ZA817664B/xx unknown
- 1981-11-11 EP EP81201257A patent/EP0053848B2/fr not_active Expired
- 1981-11-11 DE DE8181201257T patent/DE3166865D1/de not_active Expired
- 1981-11-24 FI FI813743A patent/FI68659C/fi not_active IP Right Cessation
- 1981-11-25 KR KR1019810004557A patent/KR890002800B1/ko active
- 1981-12-01 US US06/326,297 patent/US4435211A/en not_active Expired - Lifetime
- 1981-12-02 MA MA19553A patent/MA19349A1/fr unknown
- 1981-12-03 PL PL23407981A patent/PL234079A1/xx unknown
- 1981-12-03 BR BR8107861A patent/BR8107861A/pt unknown
- 1981-12-04 PH PH26577A patent/PH19449A/en unknown
- 1981-12-04 MX MX190421A patent/MX156287A/es unknown
- 1981-12-04 JP JP56196185A patent/JPS57120626A/ja active Granted
- 1981-12-04 YU YU2836/81A patent/YU42003B/xx unknown
- 1981-12-04 CA CA000391522A patent/CA1180194A/fr not_active Expired
- 1981-12-04 ES ES507717A patent/ES507717A0/es active Granted
- 1981-12-04 AU AU78279/81A patent/AU542613B2/en not_active Ceased
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4014835A1 (de) * | 1989-05-12 | 1990-11-15 | Air Liquide | Verfahren zur oxidationsbehandlung eines fluessigen bades |
DE4014835C2 (de) * | 1989-05-12 | 1999-11-04 | Air Liquide | Verfahren zur Oxidationsbehandlung eines flüssigen Bades |
Also Published As
Publication number | Publication date |
---|---|
FI68659B (fi) | 1985-06-28 |
JPH0147532B2 (fr) | 1989-10-16 |
DE3045992A1 (de) | 1982-07-22 |
EP0053848B2 (fr) | 1987-10-14 |
PL234079A1 (fr) | 1982-07-19 |
YU283681A (en) | 1984-04-30 |
KR830007855A (ko) | 1983-11-07 |
AU7827981A (en) | 1982-06-10 |
KR890002800B1 (ko) | 1989-07-31 |
FI68659C (fi) | 1985-10-10 |
US4435211A (en) | 1984-03-06 |
JPS57120626A (en) | 1982-07-27 |
ZA817664B (en) | 1982-10-27 |
ES8300871A1 (es) | 1982-11-01 |
YU42003B (en) | 1988-04-30 |
MX156287A (es) | 1988-08-08 |
IN152960B (fr) | 1984-05-12 |
CA1180194A (fr) | 1985-01-02 |
FI813743L (fi) | 1982-06-06 |
BR8107861A (pt) | 1982-09-08 |
EP0053848A1 (fr) | 1982-06-16 |
ES507717A0 (es) | 1982-11-01 |
PH19449A (en) | 1986-04-18 |
AU542613B2 (en) | 1985-02-28 |
DE3166865D1 (en) | 1984-11-29 |
MA19349A1 (fr) | 1982-07-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0053848B1 (fr) | Procédé d'insufflation de gaz à teneur élevée en oxygène dans un bain de fusion de métaux non-ferreux | |
DE69914612T2 (de) | Direktschmelzverfahren | |
DE3042222A1 (de) | Verfahren zur rueckgewinnung von fluechtigen metallen aus metaloxid-haltigem material | |
DE1941282A1 (de) | Verfahren zur Veredelung von Stahl durch Umschmelzen in einem Plasma-Lichtbogen | |
DE1941760A1 (de) | Verfahren und Vorrichtung zum Zusetzen von Additiven zu einer Schmelze | |
DE2521830A1 (de) | Verfahren und vorrichtung zur thermischen raffination von stark verunreinigtem kupfer in schmelzfluessiger phase | |
EP0118412A2 (fr) | Procédé pour effectuer des processus de fusion, métallurgiques de fusion et/ou métallurgiques de réduction dans un four à plasma ainsi que le dispositif pour la mise en oeuvre de ce procédé | |
DE1533891B1 (de) | Verfahren und Vorrichtung zum Spruehfrischen von kohlenstoffhaltigen Metallschmelzen,insbesondere Roheisenschmelzen | |
DE3212100C2 (de) | Verfahren und Vorrichtung zur Durchführung pyrometallurgischer Prozesse | |
DE2523519A1 (de) | Verfahren und apparat zur behandlung bleihaltigen flugstaubes | |
DE1026079B (de) | Duese zur Einfuehrung von Fluessigkeiten in eine Reaktionskammer | |
DE2900676A1 (de) | Verfahren zur gewinnung von nichteisenmetallen aus schlacken und anderen metallurgischen nebenprodukten | |
DE3022790C2 (de) | Verfahren zum Oxidieren von schmelzflüssigem eisenarmen Metallstein zu Rohmetall | |
DE2645585C3 (de) | Verfahren zur kontinuierlichen oder diskontinuierlichen Behandlung von geschmolzenen schwermetalloxidhaltigen Schlacken zur Freisetzung von Wertmetallen und/oder deren Verbindungen | |
EP0045532B1 (fr) | Procédé de fusion directe en continu de plomb métallique à partir de matériaux sulfureux plombifères | |
EP0012226A1 (fr) | Procédé pour le traitement d'acier contenant du bore | |
EP0659170B1 (fr) | Reacteur et procede pour la fusion de residus de combustion | |
DE2616784A1 (de) | Verfahren zur regenerierung geschmolzener schlacken | |
DE3143563C2 (de) | Tauchrohr für das Blockgießen und ein Verfahren zum Betrieb dieses Tauchrohres | |
DE1282867B (de) | Verfahren zur Herstellung von Ferrophosphorpulver | |
DE3701846A1 (de) | Direktes schmelzverfahren fuer sulfidische erze | |
DE2715077C3 (de) | Exothermes Gemisch zum Frischen von Stahlschmelzen | |
DE4429937A1 (de) | Verfahren zum Verblasen von NE-Metall-Schrott und Hütten-Zwischenprodukten | |
DE1758455C3 (de) | Verfahren zum Frischen von legierten kohlenstoffhaltigen Eisenschmelzen | |
DE674550C (de) | Verfahren zur ununterbrochenen Entzinkung von fluessigem zinkhaltigem Blei |
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): BE DE FR GB IT SE |
|
17P | Request for examination filed |
Effective date: 19820525 |
|
ITF | It: translation for a ep patent filed |
Owner name: STUDIO JAUMANN |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Designated state(s): BE DE FR GB IT SE |
|
REF | Corresponds to: |
Ref document number: 3166865 Country of ref document: DE Date of ref document: 19841129 |
|
ET | Fr: translation filed | ||
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
26 | Opposition filed |
Opponent name: UNION CARBIDE CORPORATION Effective date: 19850724 |
|
PUAH | Patent maintained in amended form |
Free format text: ORIGINAL CODE: 0009272 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT MAINTAINED AS AMENDED |
|
27A | Patent maintained in amended form |
Effective date: 19871014 |
|
AK | Designated contracting states |
Kind code of ref document: B2 Designated state(s): BE DE FR GB IT SE |
|
ET3 | Fr: translation filed ** decision concerning opposition | ||
ITF | It: translation for a ep patent filed |
Owner name: STUDIO JAUMANN |
|
ITTA | It: last paid annual fee | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19930914 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19930917 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19931025 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19931202 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19931209 Year of fee payment: 13 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19941111 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19941112 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Effective date: 19941130 |
|
EAL | Se: european patent in force in sweden |
Ref document number: 81201257.3 |
|
BERE | Be: lapsed |
Owner name: METALLGESELLSCHAFT A.G. Effective date: 19941130 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19941111 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19950731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19950801 |
|
EUG | Se: european patent has lapsed |
Ref document number: 81201257.3 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |