AU658760B2 - Filter for light metals - Google Patents
Filter for light metals Download PDFInfo
- Publication number
- AU658760B2 AU658760B2 AU42703/93A AU4270393A AU658760B2 AU 658760 B2 AU658760 B2 AU 658760B2 AU 42703/93 A AU42703/93 A AU 42703/93A AU 4270393 A AU4270393 A AU 4270393A AU 658760 B2 AU658760 B2 AU 658760B2
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- AU
- Australia
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- 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.)
- Ceased
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 13
- 239000002184 metal Substances 0.000 title claims abstract description 13
- 150000002739 metals Chemical class 0.000 title claims abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000006260 foam Substances 0.000 claims abstract description 35
- 239000005388 borosilicate glass Substances 0.000 claims abstract description 25
- 239000000203 mixture Substances 0.000 claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000010439 graphite Substances 0.000 claims abstract description 23
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 23
- 229910052882 wollastonite Inorganic materials 0.000 claims abstract description 20
- 239000010456 wollastonite Substances 0.000 claims abstract description 20
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 17
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 239000011159 matrix material Substances 0.000 claims abstract description 7
- 239000002002 slurry Substances 0.000 claims description 24
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- 229910003481 amorphous carbon Inorganic materials 0.000 claims description 6
- 239000004115 Sodium Silicate Substances 0.000 claims description 4
- NWXHSRDXUJENGJ-UHFFFAOYSA-N calcium;magnesium;dioxido(oxo)silane Chemical compound [Mg+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O NWXHSRDXUJENGJ-UHFFFAOYSA-N 0.000 claims description 4
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052637 diopside Inorganic materials 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 4
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- VEUACKUBDLVUAC-UHFFFAOYSA-N [Na].[Ca] Chemical compound [Na].[Ca] VEUACKUBDLVUAC-UHFFFAOYSA-N 0.000 claims description 2
- 229910052810 boron oxide Inorganic materials 0.000 claims description 2
- 238000011065 in-situ storage Methods 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 101100114828 Drosophila melanogaster Orai gene Proteins 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 17
- 239000004411 aluminium Substances 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 10
- 238000010304 firing Methods 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- 239000002562 thickening agent Substances 0.000 description 4
- 229920005830 Polyurethane Foam Polymers 0.000 description 3
- -1 acrylic ester Chemical class 0.000 description 3
- 229920005550 ammonium lignosulfonate Polymers 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 239000007767 bonding agent Substances 0.000 description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000011496 polyurethane foam Substances 0.000 description 3
- 229920005789 ACRONAL® acrylic binder Polymers 0.000 description 2
- 229910011255 B2O3 Inorganic materials 0.000 description 2
- 229920001353 Dextrin Polymers 0.000 description 2
- 239000004375 Dextrin Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 235000019425 dextrin Nutrition 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000005365 phosphate glass Substances 0.000 description 2
- 229920002432 poly(vinyl methyl ether) polymer Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000080 wetting agent Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 239000004117 Lignosulphonate Substances 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- FGZBFIYFJUAETR-UHFFFAOYSA-N calcium;magnesium;silicate Chemical compound [Mg+2].[Ca+2].[O-][Si]([O-])([O-])[O-] FGZBFIYFJUAETR-UHFFFAOYSA-N 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910021485 fumed silica Inorganic materials 0.000 description 1
- 235000019357 lignosulphonate Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000004876 x-ray fluorescence Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C14/00—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix
- C03C14/004—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix the non-glass component being in the form of particles or flakes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2068—Other inorganic materials, e.g. ceramics
- B01D39/2093—Ceramic foam
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2214/00—Nature of the non-vitreous component
- C03C2214/04—Particles; Flakes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geology (AREA)
- Materials Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Glass Compositions (AREA)
- Filtering Materials (AREA)
- Joining Of Glass To Other Materials (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Light Guides In General And Applications Therefor (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB929211947A GB9211947D0 (en) | 1992-06-05 | 1992-06-05 | Filters for light metals |
| GB9211947 | 1992-06-05 | ||
| PCT/GB1993/000956 WO1993025296A1 (en) | 1992-06-05 | 1993-05-10 | Filters for light metals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU4270393A AU4270393A (en) | 1994-01-04 |
| AU658760B2 true AU658760B2 (en) | 1995-04-27 |
Family
ID=10716613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU42703/93A Ceased AU658760B2 (en) | 1992-06-05 | 1993-05-10 | Filter for light metals |
Country Status (17)
| Country | Link |
|---|---|
| US (1) | US5520823A (Direct) |
| EP (1) | EP0649334B1 (Direct) |
| JP (1) | JP3247952B2 (Direct) |
| KR (1) | KR100254287B1 (Direct) |
| AT (1) | ATE135251T1 (Direct) |
| AU (1) | AU658760B2 (Direct) |
| BR (1) | BR9306497A (Direct) |
| CA (1) | CA2136335C (Direct) |
| DE (1) | DE69301825T2 (Direct) |
| DK (1) | DK0649334T3 (Direct) |
| ES (1) | ES2084500T3 (Direct) |
| GB (1) | GB9211947D0 (Direct) |
| IN (1) | IN177905B (Direct) |
| MX (1) | MX9303306A (Direct) |
| TW (1) | TW314474B (Direct) |
| WO (1) | WO1993025296A1 (Direct) |
| ZA (1) | ZA933680B (Direct) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5443495A (en) * | 1993-09-17 | 1995-08-22 | Scimed Lifesystems Inc. | Polymerization angioplasty balloon implant device |
| MY138532A (en) | 2000-08-31 | 2009-06-30 | Foseco Int | Refractory articles |
| US6946095B2 (en) * | 2001-06-08 | 2005-09-20 | Kabushiki Kaisha Kobe Seiko Sho | Filter for molten aluminum alloy or molten aluminum |
| EP1288178A1 (en) * | 2001-09-01 | 2003-03-05 | Carbon Application Technology Ltd. | Filter for molten metal filtration and method for producing such filters |
| US6663776B2 (en) | 2001-10-03 | 2003-12-16 | Selee Corporation | High strength SiC filter and method for the manufacture thereof |
| EP1369158A1 (en) * | 2002-05-31 | 2003-12-10 | Carbon Application Technology Ltd. | Fiber reinforced filter for molten metal filtration and method for producing such filters |
| EP1369190A1 (en) * | 2002-06-03 | 2003-12-10 | Carbon Application Technology Ltd. | Filter device for molten metal filtration |
| US7014755B2 (en) * | 2004-04-15 | 2006-03-21 | Iain Muir | Filtration and plug drain device for containing oil and chemical spills |
| TW200719941A (en) * | 2005-09-05 | 2007-06-01 | Vesuvius Crucible Co | Filter device for molten metal filtration and method for producing such filters |
| US8486176B2 (en) * | 2008-06-16 | 2013-07-16 | Porvair Plc | Method for filtering molten aluminum and molten aluminum alloys |
| EP2470283B1 (en) * | 2009-08-24 | 2016-04-20 | Porvair Plc | Corrosion resistant glass coating applied to ceramic foam used to filter molten metal |
| CN102413895B (zh) | 2010-03-19 | 2014-11-19 | 福塞科国际有限公司 | 用于生产耐火过滤器的方法 |
| CN101810973B (zh) | 2010-04-15 | 2012-05-23 | 济南圣泉倍进陶瓷过滤器有限公司 | 一种用于过滤熔融金属的过滤器及其制造方法 |
| WO2012027394A1 (en) * | 2010-08-24 | 2012-03-01 | Allied Mineral Products, Inc. | Monolithic graphitic castable refractory |
| JP2015537098A (ja) | 2012-12-07 | 2015-12-24 | イノアック ユーエスエー インク | 溶融金属フィルタの生成に使用可能な親水性を有する熱網状化ポリウレタンフォーム |
| EP3305745A1 (en) | 2016-10-05 | 2018-04-11 | Foseco International Limited | Coated filters and methods of production |
| HUE063922T2 (hu) | 2019-10-31 | 2024-02-28 | Foseco Int | Tûzálló szûrõ |
| CN113336255B (zh) * | 2021-08-05 | 2021-10-29 | 天津包钢稀土研究院有限责任公司 | 一种稀土卤化物熔盐的提纯方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2207913A (en) * | 1987-06-22 | 1989-02-15 | Central Glass Co Ltd | Heat resistance reinforced foamed glass |
| EP0388010A1 (en) * | 1989-02-23 | 1990-09-19 | Foseco International Limited | Filters for light metals |
| EP0507463A2 (en) * | 1991-04-05 | 1992-10-07 | Foseco International Limited | Filters for light metals |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE637384A (Direct) * | 1958-04-23 | |||
| US3524548A (en) * | 1968-09-16 | 1970-08-18 | Kaiser Aluminium Chem Corp | Filter medium for molten metal |
| JPS5222327B2 (Direct) * | 1972-05-15 | 1977-06-16 | ||
| US5114472A (en) * | 1990-12-13 | 1992-05-19 | Aluminum Company Of America | Multistage rigid media filter for molten metal and method of filtering |
-
1992
- 1992-06-05 GB GB929211947A patent/GB9211947D0/en active Pending
-
1993
- 1993-05-10 BR BR9306497A patent/BR9306497A/pt not_active IP Right Cessation
- 1993-05-10 US US08/335,764 patent/US5520823A/en not_active Expired - Lifetime
- 1993-05-10 CA CA002136335A patent/CA2136335C/en not_active Expired - Lifetime
- 1993-05-10 AU AU42703/93A patent/AU658760B2/en not_active Ceased
- 1993-05-10 EP EP93911933A patent/EP0649334B1/en not_active Expired - Lifetime
- 1993-05-10 AT AT93911933T patent/ATE135251T1/de active
- 1993-05-10 DK DK93911933.5T patent/DK0649334T3/da active
- 1993-05-10 ES ES93911933T patent/ES2084500T3/es not_active Expired - Lifetime
- 1993-05-10 DE DE69301825T patent/DE69301825T2/de not_active Expired - Lifetime
- 1993-05-10 KR KR1019940704395A patent/KR100254287B1/ko not_active Expired - Fee Related
- 1993-05-10 WO PCT/GB1993/000956 patent/WO1993025296A1/en not_active Ceased
- 1993-05-10 JP JP50121294A patent/JP3247952B2/ja not_active Expired - Fee Related
- 1993-05-20 TW TW082103968A patent/TW314474B/zh active
- 1993-05-26 ZA ZA933680A patent/ZA933680B/xx unknown
- 1993-06-02 MX MX9303306A patent/MX9303306A/es unknown
- 1993-06-07 IN IN178BO1993 patent/IN177905B/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2207913A (en) * | 1987-06-22 | 1989-02-15 | Central Glass Co Ltd | Heat resistance reinforced foamed glass |
| EP0388010A1 (en) * | 1989-02-23 | 1990-09-19 | Foseco International Limited | Filters for light metals |
| EP0507463A2 (en) * | 1991-04-05 | 1992-10-07 | Foseco International Limited | Filters for light metals |
Also Published As
| Publication number | Publication date |
|---|---|
| KR950701835A (ko) | 1995-05-17 |
| JPH07507489A (ja) | 1995-08-24 |
| TW314474B (Direct) | 1997-09-01 |
| CA2136335A1 (en) | 1993-12-23 |
| DE69301825T2 (de) | 1996-08-01 |
| MX9303306A (es) | 1994-01-31 |
| JP3247952B2 (ja) | 2002-01-21 |
| EP0649334A1 (en) | 1995-04-26 |
| WO1993025296A1 (en) | 1993-12-23 |
| GB9211947D0 (en) | 1992-07-15 |
| DK0649334T3 (da) | 1996-07-22 |
| EP0649334B1 (en) | 1996-03-13 |
| AU4270393A (en) | 1994-01-04 |
| CA2136335C (en) | 2003-01-28 |
| ZA933680B (en) | 1993-12-21 |
| ATE135251T1 (de) | 1996-03-15 |
| IN177905B (Direct) | 1997-02-22 |
| DE69301825D1 (de) | 1996-04-18 |
| KR100254287B1 (ko) | 2000-05-01 |
| BR9306497A (pt) | 1998-09-15 |
| ES2084500T3 (es) | 1996-05-01 |
| US5520823A (en) | 1996-05-28 |
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