NO309613B1 - Fremgangsmåte og apparat for behandling av smeltet metall som inneholder suspenderte, flytende partikler - Google Patents
Fremgangsmåte og apparat for behandling av smeltet metall som inneholder suspenderte, flytende partikler Download PDFInfo
- Publication number
- NO309613B1 NO309613B1 NO943807A NO943807A NO309613B1 NO 309613 B1 NO309613 B1 NO 309613B1 NO 943807 A NO943807 A NO 943807A NO 943807 A NO943807 A NO 943807A NO 309613 B1 NO309613 B1 NO 309613B1
- Authority
- NO
- Norway
- Prior art keywords
- molten metal
- liquid particles
- medium
- gravity
- particles
- Prior art date
Links
- 239000002245 particle Substances 0.000 title claims description 144
- 229910052751 metal Inorganic materials 0.000 title claims description 121
- 239000002184 metal Substances 0.000 title claims description 121
- 239000007788 liquid Substances 0.000 title claims description 120
- 238000000034 method Methods 0.000 title claims description 20
- 230000008569 process Effects 0.000 title claims description 4
- 150000003839 salts Chemical class 0.000 claims description 46
- 230000005484 gravity Effects 0.000 claims description 29
- 229910052782 aluminium Inorganic materials 0.000 claims description 25
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 25
- 230000008021 deposition Effects 0.000 claims description 18
- 239000011148 porous material Substances 0.000 claims description 14
- 238000011282 treatment Methods 0.000 claims description 11
- 239000004411 aluminium Substances 0.000 claims description 7
- 238000004581 coalescence Methods 0.000 claims description 6
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000460 chlorine Substances 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims 2
- 229910052710 silicon Inorganic materials 0.000 claims 2
- 239000010703 silicon Substances 0.000 claims 2
- 229910052726 zirconium Inorganic materials 0.000 claims 2
- 239000000919 ceramic Substances 0.000 description 35
- 239000007787 solid Substances 0.000 description 13
- 238000011144 upstream manufacturing Methods 0.000 description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 229910052799 carbon Inorganic materials 0.000 description 10
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 238000005266 casting Methods 0.000 description 5
- 239000006260 foam Substances 0.000 description 5
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 4
- 229910001629 magnesium chloride Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000009736 wetting Methods 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminium flouride Chemical compound F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 2
- 101100004392 Arabidopsis thaliana BHLH147 gene Proteins 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 235000011148 calcium chloride Nutrition 0.000 description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 2
- 229910001634 calcium fluoride Inorganic materials 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 239000001103 potassium chloride Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical group O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 150000004673 fluoride salts Chemical class 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- -1 porous Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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
- C22B21/00—Obtaining aluminium
- C22B21/06—Obtaining aluminium refining
- C22B21/066—Treatment of circulating aluminium, e.g. by filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/04—Breaking emulsions
- B01D17/045—Breaking emulsions with coalescers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/08—Thickening liquid suspensions by filtration
- B01D17/10—Thickening liquid suspensions by filtration with stationary filtering elements
-
- 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
- C22B9/02—Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
- C22B9/023—By filtering
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Acoustics & Sound (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Filtering Materials (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/014,623 US5336295A (en) | 1993-02-08 | 1993-02-08 | Method for separation and removal of suspended liquid particles from molten metal and associated apparatus |
| PCT/US1994/001363 WO1994018349A1 (fr) | 1993-02-08 | 1994-02-07 | Procede et appareil de separation et d'elimination de particules liquides du metal fondu |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO943807L NO943807L (no) | 1994-10-07 |
| NO943807D0 NO943807D0 (no) | 1994-10-07 |
| NO309613B1 true NO309613B1 (no) | 2001-02-26 |
Family
ID=21766612
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO943807A NO309613B1 (no) | 1993-02-08 | 1994-10-07 | Fremgangsmåte og apparat for behandling av smeltet metall som inneholder suspenderte, flytende partikler |
| NO980555A NO980555D0 (no) | 1993-02-08 | 1998-02-09 | Fremgangsmåte for skilling og fjerning av suspenderte, flytende partikler fra smeltet metall og tilhörende apparat |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO980555A NO980555D0 (no) | 1993-02-08 | 1998-02-09 | Fremgangsmåte for skilling og fjerning av suspenderte, flytende partikler fra smeltet metall og tilhörende apparat |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5336295A (fr) |
| EP (1) | EP0642594B1 (fr) |
| JP (1) | JPH07508562A (fr) |
| AU (1) | AU687035B2 (fr) |
| BR (1) | BR9404034A (fr) |
| CA (1) | CA2117778A1 (fr) |
| DE (1) | DE69427143T2 (fr) |
| NO (2) | NO309613B1 (fr) |
| WO (1) | WO1994018349A1 (fr) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5427602A (en) * | 1994-08-08 | 1995-06-27 | Aluminum Company Of America | Removal of suspended particles from molten metal |
| US5673902A (en) * | 1996-02-01 | 1997-10-07 | Selee Corporation | Dual stage ceramic foam filtration system and method |
| US5785851A (en) * | 1996-08-23 | 1998-07-28 | Vesuvius Crucible Company | High capacity filter |
| US6102260A (en) * | 1996-11-21 | 2000-08-15 | Psc Technologies, Inc. | Impact pad |
| US5861121A (en) * | 1996-11-21 | 1999-01-19 | Psc Technologies, Inc. | Chamber for reception, Lateral division and redirection of liquid metal flow |
| US6036743A (en) * | 1997-10-27 | 2000-03-14 | Selee Corporation | Method and apparatus for removing liquid salts from liquid metal |
| WO2001051676A2 (fr) * | 2000-01-10 | 2001-07-19 | Klaus Holler | Dispositif et procede de recuperation de matiere premiere dans une scorie, utilisation de scorie pour recuperer de la matiere premiere et utilisation d'installations de separation et/ou de filtrage pour recuperer de la matiere premiere a partir de scorie |
| GB0403466D0 (en) * | 2004-02-17 | 2004-03-24 | Mqp Ltd | Treatment of metal melts |
| US7431069B2 (en) * | 2004-10-16 | 2008-10-07 | Fu Shun Liang | Method and apparatus for metal casting |
| US9067045B2 (en) * | 2008-07-25 | 2015-06-30 | Cook Medical Technologies Llc | Balloon catheter and method for making same |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2840463A (en) * | 1954-05-13 | 1958-06-24 | Aluminum Co Of America | Degassing and purifying molten aluminous metal |
| US2863558A (en) * | 1957-04-29 | 1958-12-09 | Aluminum Co Of America | Filtering molten aluminous metal |
| US3025155A (en) * | 1958-11-21 | 1962-03-13 | Aluminum Co Of America | Chloridizing aluminum |
| US3039864A (en) * | 1958-11-21 | 1962-06-19 | Aluminum Co Of America | Treatment of molten light metals |
| US3737304A (en) * | 1970-12-02 | 1973-06-05 | Aluminum Co Of America | Process for treating molten aluminum |
| US3737303A (en) * | 1970-12-02 | 1973-06-05 | Aluminum Co Of America | Refining molten aluminum with chlorine-activated bodies |
| US3737305A (en) * | 1970-12-02 | 1973-06-05 | Aluminum Co Of America | Treating molten aluminum |
| US3893917A (en) * | 1974-01-02 | 1975-07-08 | Alusuisse | Molten metal filter |
| US3962081A (en) * | 1975-03-28 | 1976-06-08 | Swiss Aluminium Ltd. | Ceramic foam filter |
| US4032124A (en) * | 1975-03-28 | 1977-06-28 | Swiss Aluminium Ltd. | Apparatus and method for in-line degassing and filtration of molten metal |
| US4024212A (en) * | 1975-03-28 | 1977-05-17 | Swiss Aluminium Ltd. | Ceramic foam and method of preparation |
| US4024056A (en) * | 1975-07-21 | 1977-05-17 | Swiss Aluminium Ltd. | Filtering of molten metal |
| GB1537549A (en) * | 1975-06-23 | 1978-12-29 | Alusuisse | Methods of preparing ceramic foam materials |
| US4067731A (en) * | 1975-07-18 | 1978-01-10 | Southwire Company | Method of treating molten metal |
| US4052198A (en) * | 1976-02-02 | 1977-10-04 | Swiss Aluminium Limited | Method for in-line degassing and filtration of molten metal |
| GB2030597B (en) * | 1978-08-23 | 1982-11-17 | Alcan Res & Dev | Filtering aluminium |
| US4384888A (en) * | 1981-08-03 | 1983-05-24 | Aluminum Company Of America | Treating molten aluminum |
| US4390364A (en) * | 1981-08-03 | 1983-06-28 | Aluminum Company Of America | Removal of fine particles from molten metal |
| EP0134705B1 (fr) * | 1983-08-16 | 1988-07-27 | Alcan International Limited | Méthode de filtration d'un métal fondu |
| US4769158A (en) * | 1986-12-08 | 1988-09-06 | Aluminum Company Of America | Molten metal filtration system using continuous media filter |
| JPS6462265A (en) * | 1987-09-01 | 1989-03-08 | Hitachi Metals Ltd | Removing method for nonmetallic inclusion in molten metal |
| US5112184A (en) * | 1990-06-11 | 1992-05-12 | Reach All | Multi-function hydraulic control handle |
| US5122184A (en) * | 1990-12-28 | 1992-06-16 | Aluminum Company Of America | Molten salt coalescence in molten aluminum |
-
1993
- 1993-02-08 US US08/014,623 patent/US5336295A/en not_active Expired - Lifetime
-
1994
- 1994-02-07 WO PCT/US1994/001363 patent/WO1994018349A1/fr active IP Right Grant
- 1994-02-07 BR BR9404034A patent/BR9404034A/pt not_active Application Discontinuation
- 1994-02-07 CA CA002117778A patent/CA2117778A1/fr not_active Abandoned
- 1994-02-07 DE DE69427143T patent/DE69427143T2/de not_active Expired - Fee Related
- 1994-02-07 EP EP94907436A patent/EP0642594B1/fr not_active Expired - Lifetime
- 1994-02-07 JP JP6518286A patent/JPH07508562A/ja active Pending
- 1994-02-07 AU AU61021/94A patent/AU687035B2/en not_active Ceased
- 1994-10-07 NO NO943807A patent/NO309613B1/no not_active IP Right Cessation
-
1998
- 1998-02-09 NO NO980555A patent/NO980555D0/no not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| DE69427143D1 (de) | 2001-05-31 |
| AU6102194A (en) | 1994-08-29 |
| NO943807L (no) | 1994-10-07 |
| JPH07508562A (ja) | 1995-09-21 |
| BR9404034A (pt) | 1999-06-01 |
| NO943807D0 (no) | 1994-10-07 |
| AU687035B2 (en) | 1998-02-19 |
| US5336295A (en) | 1994-08-09 |
| EP0642594A4 (fr) | 1995-06-07 |
| EP0642594B1 (fr) | 2001-04-25 |
| DE69427143T2 (de) | 2001-11-15 |
| CA2117778A1 (fr) | 1994-08-18 |
| EP0642594A1 (fr) | 1995-03-15 |
| WO1994018349A1 (fr) | 1994-08-18 |
| NO980555L (no) | 1994-10-07 |
| NO980555D0 (no) | 1998-02-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM1K | Lapsed by not paying the annual fees |