US20080314199A1 - Enhanced Alloy Recovery In Molten Steel Baths Utilizing Cored Wires Doped With Deoxidants - Google Patents

Enhanced Alloy Recovery In Molten Steel Baths Utilizing Cored Wires Doped With Deoxidants Download PDF

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Publication number
US20080314199A1
US20080314199A1 US12/122,889 US12288908A US2008314199A1 US 20080314199 A1 US20080314199 A1 US 20080314199A1 US 12288908 A US12288908 A US 12288908A US 2008314199 A1 US2008314199 A1 US 2008314199A1
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United States
Prior art keywords
alloy
additive
delivery device
deoxidizing agent
molten
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Abandoned
Application number
US12/122,889
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English (en)
Inventor
Leslie Wade Niemi
Gregory P. Marzec
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Affival Inc
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Affival Inc
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Publication date
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Priority to US12/122,889 priority Critical patent/US20080314199A1/en
Assigned to AFFIVAL, INC. reassignment AFFIVAL, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MARZEC, GREGORY P., NIEMI, LESLIE WADE
Publication of US20080314199A1 publication Critical patent/US20080314199A1/en
Assigned to BIOLASE TECHNOLOGY, INC. reassignment BIOLASE TECHNOLOGY, INC. SECURITY AGREEMENT PAYOFF Assignors: MIDCAP FINANCIAL, LLC, AGENT AND AS LENDER
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0006—Adding metallic additives
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/06—Deoxidising, e.g. killing
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/04—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbonitrides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium

Definitions

  • the present invention relates generally to adding alloys to molten metal and steel in particular. More particularly, this invention relates to adding alloys and deoxidants to molten steel in order to increase recovery in the metal.
  • adding alloys and additives to molten steel is often accomplished by encasing powdered alloys and additives in a metal sheath to form a “cored wire” which is subsequently “injected” into the molten steel contained in a ladle at the steel refining facility of most steel mills.
  • U.S. Pat. No. 4,128,414 describes such an injection process. Some of the material injected into the steel does not stay in the steel. In order to efficiently produce additive-enhanced or alloy-enhanced molten steel, it is desirable to increase the “recovery” in molten steel.
  • Recovery is a measure of the amount of alloys and additives contained in the molten steel after injection. Recovery is expressed as the percent of alloy or additive injected in the steel that is contained in the steel after injection. The greater the percentage contained in the steel after injection, the greater the recovery will be. Greater recoveries mean lower cost to the steel maker because less cored wire is injected. Also, greater recovery usually means the final steel chemistry will be more predictable and repeatable.
  • additive alloys typically ground to powders under one millimeter in diameter
  • a steel jacketed cored wire that is injected deep into molten baths results in a significant improvement in recovery.
  • the recovery of certain additive alloys is negatively affected by the oxygen contents of both the molten bath and the molten slag on top of the molten bath. Reducing the oxygen content of the molten bath and slag is possible; however, at no time can it be brought to zero. Most generally, there is always an amount of oxygen remaining in the molten metal and the slag that negatively affects the additive alloy recovery. The greater the oxygen level, the more negative the effect.
  • FIG. 1 depicts oxygen 13 in the molten metal 10 .
  • the oxidized layer 19 covers the additive alloy powder particle 16 and thereby reduces the overall density of the particle 16 , making it more buoyant than the steel 10 .
  • Nb has a density of 8.57 gm/m 3 and the density of Nb 2 O 5 is 4.47 gm/m 3 , but the density of steel is 7.6 gm/m 3 .
  • FIG. 2 depicts an oxidized alloy having a lower density rising toward the surface of the molten steel 10 .
  • the oxide layer 19 becomes a barrier to the molten additive alloy core 16 .
  • 70% FeTi has a melting temperature of 1085 C
  • TiO 2 has a melting temperature of 1850 C
  • the molten steel 10 temperature is usually about 1600 C. This problem is illustrated in FIG. 3 .
  • the purpose of the additive alloy 16 being injected into the molten bath 10 is to form nitrides and/or carbides beneficial to the final product.
  • CaCN 2 Calcium Cyanamid
  • the recovery of nitrogen is found to be greatly improved when the CaCN 2 is added to the molten bath 10 using cored wire injection as described in U.S. Pat. No. 4,897,114.
  • the present invention may be embodied as an alloy delivery device.
  • the delivery device may include a blended substance having at least one additive alloy and at least one deoxidizing agent.
  • the blended substance may be covered by an elongated sheath.
  • the sheath may be a substantially hollow wire in which the blended substance resides.
  • the at least one additive alloy may be FeNb, FeV, or FeTi.
  • the at least one deoxidizing agent may be Ca, CaSi, Si, Al, or CaCN 2 .
  • the deoxidizing agent may be a powder typically comprised of particles having a diameter of less than one millimeter.
  • the additive alloy may be ground powder particles typically having a diameter of less than one millimeter.
  • the deoxidizing agent may be present in an amount of typically 5% to 50% of the mixture by weight or volume.
  • the present invention may be embodied as a method for providing an additive alloy to molten metal, wherein at least one deoxidizing agent is blended with at least one additive alloy to provide a blended substance.
  • the blended substance may be encased in a metal sheath to provide an alloy delivery device.
  • Molten metal may be produced and the alloy delivery device may be provided into the molten metal.
  • the delivery device may be fed into the molten metal and the sheath may be allowed to melt in the molten metal. Once melted, the blended substance is allowed to mix with the molten metal and thereby results in dispersing the blended substance into the molten metal.
  • the recovery of the alloying additive in the molten steel is enhanced by blending deoxidizing powders with the additive alloys, such as, but not limited to, Ca, CaSi, Si, Al, CaCN 2 , etc., in varying amounts (typically, but not limited to, 5% to 50% of the mixture by weight or volume).
  • the additive alloys such as, but not limited to, Ca, CaSi, Si, Al, CaCN 2 , etc.
  • the deoxiding powders are released in close proximity to the additive alloy powders.
  • the deoxiding powders react with the dissolved oxygen content of the molten metal creating an oxygen depleted zone in the same area as the additive alloy particles.
  • the zone where the powders are released in the molten bath is both depleted in oxygen and enriched with carbon and nitrogen.
  • the present invention provides an additive-enhanced or alloy-enhanced molten steel with improved recovery.
  • FIG. 1 depicts a prior art method, wherein an oxygen enriched molten bath reacts with an additive alloy, thereby forming an oxide layer over an additive alloy core.
  • FIG. 2 demonstrates that, in the prior art methods an oxide layer will reduce the density, thus increasing the buoyancy of the additive alloy in the molten steel bath.
  • FIG. 3 depicts a high melting temperature oxide layer that acts as a barrier to dissolution of the low melting temperature additive alloy core.
  • FIG. 4 depicts an embodiment of the present invention, wherein CaCN 2 particles reacting with oxygen in the bath cause an oxygen-depleted zone. At the same time carbon and nitrogen are released into the molten bath, causing enrichment in the oxygen-depleted zone.
  • FIG. 5 depicts an embodiment of the present invention in which the deoxidizing agent does not release carbon or nitrogen into the molten bath.
  • FIG. 6 is a flow chart of a method according to the invention.
  • the present invention may be used to provide increased recovery in additive-enhanced or alloy-enhanced molten steel.
  • deoxidizing powders 31 to additive alloy powders 28 in cored wires for the injection into molten baths causes a chemical reaction between the deoxiding powder 31 and the oxygen atoms contained in the molten bath 10 .
  • This reaction reduces the oxygen content in the localized zone 34 in which the additive alloy powders 28 are released. This can be seen in FIG. 4 and FIG. 5 .
  • the amount by which these additive alloy powders 28 are oxidized is greatly reduced, thereby increasing the recovery of the additive alloy 28 .
  • an alloy delivery device may include a blend of an additive alloy such as FeNb, FeV, or FeTi, and a deoxidizing agent of Ca, CaSi, Si, Al, or CaCN 2 .
  • This blend may be housed in an elongated metal sheath.
  • the present invention has recognized the deoxidizing and/or the carborizing and nitriding potential if CaCN 2 is combined with certain oxidizable nitride and/or carbide formers (e.g., FeNb, FeV, FeTi) and is then introduced into the molten bath by cored wire injection.
  • FIG. 4 illustrates that when CaCN 2 particles 31 are blended with nitride and/or carbide forming additive alloys 28 in cored wires, the CaCN 2 particles 31 established a zone 34 around the additive alloy particle 28 , wherein the oxygen content is reduced and the carbon and nitrogen contents are enriched.
  • the deoxidizing agent is in the form of a powder with particles that typically have a diameter of less than one millimeter, while the additive alloy is in the form of a ground powder with particles that typically have a diameter of less than one millimeter.
  • the deoxidizing agent is present in an amount typically of 5% to 50% of the mixture by weight or volume.
  • FIG. 6 depicts a method according to the invention.
  • a deoxidizing agent of Ca, CaSi, Si, Al, or CaCN 2 is blended 100 with an additive alloy, which may be FeNb, FeV, or FeTi.
  • the blended material may be encased 103 in a metal sheath in order to provide an alloy delivery device.
  • the alloy delivery device is provided 109 into the molten metal.
  • the sheath is allowed 112 to melt, and the blended substance is disbursed into the molten metal.
  • FIG. 6 depicts such a method.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Continuous Casting (AREA)
US12/122,889 2007-05-17 2008-05-19 Enhanced Alloy Recovery In Molten Steel Baths Utilizing Cored Wires Doped With Deoxidants Abandoned US20080314199A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/122,889 US20080314199A1 (en) 2007-05-17 2008-05-19 Enhanced Alloy Recovery In Molten Steel Baths Utilizing Cored Wires Doped With Deoxidants

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US93867107P 2007-05-17 2007-05-17
US12/122,889 US20080314199A1 (en) 2007-05-17 2008-05-19 Enhanced Alloy Recovery In Molten Steel Baths Utilizing Cored Wires Doped With Deoxidants

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US (1) US20080314199A1 (de)
EP (1) EP2158337A4 (de)
JP (1) JP2010527410A (de)
KR (1) KR20100029078A (de)
CN (1) CN101688260A (de)
AT (1) AT507365A2 (de)
BR (1) BRPI0811753A2 (de)
CA (1) CA2686285A1 (de)
CZ (1) CZ2009857A3 (de)
DE (1) DE112008001288T5 (de)
ES (1) ES2343302B1 (de)
FI (1) FI20096347L (de)
GB (1) GB0919971D0 (de)
MX (1) MX2009012438A (de)
PL (1) PL390678A1 (de)
RU (1) RU2529132C2 (de)
SE (1) SE0901523L (de)
SK (1) SK500572009A3 (de)
TR (1) TR200908693T1 (de)
WO (1) WO2008144617A1 (de)
ZA (1) ZA200908515B (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090169782A1 (en) * 2004-11-22 2009-07-02 Invista North America S Ar L Process for crystallizing and solid state polymerizing polymers and the coated polymer
US11684421B2 (en) 2006-08-24 2023-06-27 Pipstek, Llc Dental and medical treatments and procedures
US11701202B2 (en) 2013-06-26 2023-07-18 Sonendo, Inc. Apparatus and methods for filling teeth and root canals
USD997355S1 (en) 2020-10-07 2023-08-29 Sonendo, Inc. Dental treatment instrument
US11918432B2 (en) 2006-04-20 2024-03-05 Sonendo, Inc. Apparatus and methods for treating root canals of teeth
US12114924B2 (en) 2006-08-24 2024-10-15 Pipstek, Llc Treatment system and method
US12186151B2 (en) 2010-10-21 2025-01-07 Sonendo, Inc. Apparatus, methods, and compositions for endodontic treatments
US12268565B2 (en) 2009-11-13 2025-04-08 Sonendo, Inc. Liquid jet apparatus and methods for dental treatments
US12533218B2 (en) 2013-05-01 2026-01-27 Sonendo, Inc. Apparatus and methods for treating teeth
US12551322B2 (en) 2012-03-22 2026-02-17 Sonendo, Inc. Apparatus and methods for cleaning teeth
USD1118938S1 (en) 2022-09-23 2026-03-17 Sonendo, Inc. Dental console

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5157889B2 (ja) * 2008-12-26 2013-03-06 日立電線株式会社 銅合金鋳塊の製造方法、及び活性元素の添加方法
CN108977722A (zh) * 2018-08-01 2018-12-11 浙江大隆合金钢有限公司 一种提高05Cr17Ni4Cu4Nb钢夹杂物等级的方法
CA3031491C (en) 2019-01-03 2020-03-24 2498890 Ontario Inc. Systems, methods, and cored wires for treating a molten metal

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3322530A (en) * 1962-08-24 1967-05-30 Ishikawajima Harima Heavy Ind Method for adding additives to molten steel
US3829312A (en) * 1972-01-04 1974-08-13 Nat Res Inst Metals Process for the manufacture of steel of good machinability
US3915693A (en) * 1972-06-21 1975-10-28 Robert T C Rasmussen Process, structure and composition relating to master alloys in wire or rod form
US4021637A (en) * 1974-09-06 1977-05-03 La Soudure Electrique Autogene, Procedes Arcos Flux-cored wires for electrogas welding
US4093452A (en) * 1975-07-23 1978-06-06 British Steel Corporation Refining liquid metal
US4128414A (en) * 1975-12-05 1978-12-05 Hoesch Werke Aktiengesellschaft Method of introducing aluminum wire into steel melts and apparatus for practicing said method
US4364770A (en) * 1980-02-26 1982-12-21 Vallourec Manufacture of a composite tubular product
US4663244A (en) * 1983-09-09 1987-05-05 Messer Griesheim Gmbh Filler containing easily oxidizable elements
US4892580A (en) * 1987-11-19 1990-01-09 Skw Trostberg Aktiengesellschaft Lead-containing additive for steel melts
US4897114A (en) * 1987-11-19 1990-01-30 Skw Trostberg Aktiengesellschaft Nitrogen-containing additive for steel melts
US5087290A (en) * 1989-07-25 1992-02-11 Skw Trostberg Aktiengesellschaft Agent for the treatment of cast iron melts, process for the production thereof and the use thereof for treating cast iron melts
US5264023A (en) * 1991-11-21 1993-11-23 Skw Trostberg Aktiengesellschaft Cored wire with a content of passivated pyrophoric metal, and the use thereof
US5376160A (en) * 1992-10-30 1994-12-27 Skw Trostberg Aktiengesellschaft Agent for the treatment of metal melts

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4483710A (en) * 1981-03-31 1984-11-20 Union Carbide Corporation Addition agent for adding vanadium to iron base alloys
FR2612945B1 (fr) * 1987-03-24 1993-08-13 Affival Procede d'elaboration des metaux ferreux contenant du plomb et fil fourre pour mise en oeuvre du procede
RU2061762C1 (ru) * 1993-02-18 1996-06-10 Институт новой металлургической технологии Способ обработки стали в ковше
ES2195768B1 (es) * 2002-02-13 2005-03-01 Juan Asensio Lozano Procedimiento de fabricacion de un acero austenitico al manganeso microaleado y acero asi obtenido.
GB2422618A (en) * 2005-01-28 2006-08-02 Injection Alloys Ltd Molten metal refining wire

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3322530A (en) * 1962-08-24 1967-05-30 Ishikawajima Harima Heavy Ind Method for adding additives to molten steel
US3829312A (en) * 1972-01-04 1974-08-13 Nat Res Inst Metals Process for the manufacture of steel of good machinability
US3915693A (en) * 1972-06-21 1975-10-28 Robert T C Rasmussen Process, structure and composition relating to master alloys in wire or rod form
US4021637A (en) * 1974-09-06 1977-05-03 La Soudure Electrique Autogene, Procedes Arcos Flux-cored wires for electrogas welding
US4093452A (en) * 1975-07-23 1978-06-06 British Steel Corporation Refining liquid metal
US4128414A (en) * 1975-12-05 1978-12-05 Hoesch Werke Aktiengesellschaft Method of introducing aluminum wire into steel melts and apparatus for practicing said method
US4364770B1 (de) * 1980-02-26 1989-05-30
US4364770A (en) * 1980-02-26 1982-12-21 Vallourec Manufacture of a composite tubular product
US4486227A (en) * 1980-02-26 1984-12-04 Vallourec Manufacture of a composite tubular product
US4486227B1 (de) * 1980-02-26 1988-12-13
US4663244A (en) * 1983-09-09 1987-05-05 Messer Griesheim Gmbh Filler containing easily oxidizable elements
US4892580A (en) * 1987-11-19 1990-01-09 Skw Trostberg Aktiengesellschaft Lead-containing additive for steel melts
US4897114A (en) * 1987-11-19 1990-01-30 Skw Trostberg Aktiengesellschaft Nitrogen-containing additive for steel melts
US5087290A (en) * 1989-07-25 1992-02-11 Skw Trostberg Aktiengesellschaft Agent for the treatment of cast iron melts, process for the production thereof and the use thereof for treating cast iron melts
US5264023A (en) * 1991-11-21 1993-11-23 Skw Trostberg Aktiengesellschaft Cored wire with a content of passivated pyrophoric metal, and the use thereof
US5376160A (en) * 1992-10-30 1994-12-27 Skw Trostberg Aktiengesellschaft Agent for the treatment of metal melts

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090169782A1 (en) * 2004-11-22 2009-07-02 Invista North America S Ar L Process for crystallizing and solid state polymerizing polymers and the coated polymer
US11918432B2 (en) 2006-04-20 2024-03-05 Sonendo, Inc. Apparatus and methods for treating root canals of teeth
US11684421B2 (en) 2006-08-24 2023-06-27 Pipstek, Llc Dental and medical treatments and procedures
US12114924B2 (en) 2006-08-24 2024-10-15 Pipstek, Llc Treatment system and method
US12213731B2 (en) 2006-08-24 2025-02-04 Pipstek, Llc Dental and medical treatments and procedures
US12268565B2 (en) 2009-11-13 2025-04-08 Sonendo, Inc. Liquid jet apparatus and methods for dental treatments
US12186151B2 (en) 2010-10-21 2025-01-07 Sonendo, Inc. Apparatus, methods, and compositions for endodontic treatments
US12551322B2 (en) 2012-03-22 2026-02-17 Sonendo, Inc. Apparatus and methods for cleaning teeth
US12533218B2 (en) 2013-05-01 2026-01-27 Sonendo, Inc. Apparatus and methods for treating teeth
US11701202B2 (en) 2013-06-26 2023-07-18 Sonendo, Inc. Apparatus and methods for filling teeth and root canals
USD997355S1 (en) 2020-10-07 2023-08-29 Sonendo, Inc. Dental treatment instrument
USD1118938S1 (en) 2022-09-23 2026-03-17 Sonendo, Inc. Dental console

Also Published As

Publication number Publication date
BRPI0811753A2 (pt) 2014-11-11
ES2343302B1 (es) 2011-06-17
EP2158337A1 (de) 2010-03-03
KR20100029078A (ko) 2010-03-15
EP2158337A4 (de) 2010-11-03
SE0901523A0 (sv) 2010-02-12
WO2008144617A1 (en) 2008-11-27
CZ2009857A3 (cs) 2010-03-03
MX2009012438A (es) 2010-04-27
FI20096347A7 (fi) 2009-12-18
JP2010527410A (ja) 2010-08-12
ZA200908515B (en) 2010-08-25
SE0901523L (sv) 2010-02-12
DE112008001288T5 (de) 2010-07-15
GB2461239A (en) 2009-12-30
AT507365A2 (de) 2010-04-15
CN101688260A (zh) 2010-03-31
TR200908693T1 (tr) 2010-04-21
FI20096347L (fi) 2009-12-18
CA2686285A1 (en) 2008-11-27
RU2009146821A (ru) 2011-06-27
SK500572009A3 (sk) 2010-03-08
GB0919971D0 (en) 2009-12-30
RU2529132C2 (ru) 2014-09-27
ES2343302A1 (es) 2010-07-27
PL390678A1 (pl) 2010-10-25

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