WO2009115081A1 - Verfahren zur herstellung von giessformteilen sowie nach dem verfahren hergestellte giessformteile - Google Patents
Verfahren zur herstellung von giessformteilen sowie nach dem verfahren hergestellte giessformteile Download PDFInfo
- Publication number
- WO2009115081A1 WO2009115081A1 PCT/DE2009/000359 DE2009000359W WO2009115081A1 WO 2009115081 A1 WO2009115081 A1 WO 2009115081A1 DE 2009000359 W DE2009000359 W DE 2009000359W WO 2009115081 A1 WO2009115081 A1 WO 2009115081A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- casting
- copper alloy
- molded part
- part according
- casting surface
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/059—Mould materials or platings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
- B22C9/061—Materials which make up the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/0648—Casting surfaces
- B22D11/066—Side dams
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
Definitions
- the invention relates to a method for the production of moldings from a silicon, nickel, chromium and zirconium and intermetallic primary phases containing copper alloy according to the features of claim 1.
- the invention further relates to moldings produced by this method.
- EP 0 346 645 B1 describes the use of a curable copper alloy of 1.6 to 2.4% nickel, 0.5 to 0.8% silicon, 0.01 to 0.20% zirconium, the remainder of copper including production-related impurities and more commonly Processing additives, as a material for the production of moldings, which are subject during casting a permanently changing temperature stress, in particular in the form of blocks for side dams of Doppelbandg screenanlagen.
- the performance of Doppelbandg screenanlagen depends crucially on the proper functioning of the formed from block side dam chain. So it is necessary that the blocks have the highest possible thermal conductivity, so that the melting or solidification heat can be dissipated as quickly as possible.
- the material must not only have a high hardness and tensile strength and a small grain size.
- an optimal fatigue behavior which ensures that after leaving the casting line, the thermal stresses which occur during the cooling of the blocks do not lead to the tearing of the blocks in the corners of the T-slot incorporated for receiving the steel strip. Occur such caused by thermal shock cracks, after a short time the block in question falls out of the chain, the molten metal leak out of the mold cavity uncontrolled and can damage equipment. To replace the defective block, the system must be stopped and the casting process interrupted.
- the zirconium-containing, curable CuNiSiCr alloy described in EP 0 346 645 B1 is outstandingly suitable for blocks of side dams of double-belt casting plants.
- the addition of chromium increases the conductivity of the material. Fe addition limits grain growth during solution annealing without adversely affecting the other properties of the material.
- the cast material is usually hot-formed to adjust a fine-grained structure and to achieve the required hardness and electrical conductivity by conventional forming processes such as extrusion, forging or rolling, then solution-annealed and cured, the eutectic, inhomogeneous distribution of the intermetallic primary phases of the casting more or less well destroyed and the primary phases aligned in the Hauptumformraum.
- conventional forming processes such as extrusion, forging or rolling, then solution-annealed and cured, the eutectic, inhomogeneous distribution of the intermetallic primary phases of the casting more or less well destroyed and the primary phases aligned in the Hauptumformraum.
- In the conventional production of blocks of extruded or hot rolled bars there is a relatively unevenly distributed, pronounced line oriented primary phase array in the casting surface of the blocks.
- the net distribution of the intermetallic primary phases of the casting state is usually insufficiently eliminated since the overall degree of deformation is limited and the slab is formed approximately equally in the longitudinal and transverse directions.
- the invention is based on the object to optimize a process for the production of moldings, in particular for the production of blocks for side dams of Doppelbandgitanlagen so that the wear of the casting surfaces coming into contact with a molten metal later begins and progresses more slowly, so that about a longer production period using the mold parts, a cast metal strip with integrity can be produced. Furthermore, a molded part with the improved properties to be shown.
- the object underlying the invention is achieved in that the intermetallic primary phases contained in the copper alloy are oriented by directional hot working such that a casting surface coming into contact with the molten metal of a casting part produced from the ironed cast block is inclined at an angle of 90 ⁇ 10 °, ie is substantially perpendicular, is selected to the ironing of the ingot.
- substantially perpendicular means an angle of 90 ⁇ 10 ° to the ironing direction of the ingot.
- Vertical means an angle of 90 °.
- the fiber orientation has finely divided and uniformly distributed primary phases, which is achieved in the context of the invention in that ironing is carried out in only a single direction, wherein the cast block in a ratio of at least 4: 1, preferably more as 7: 1, is stripped.
- the hot forming can be done by processes such as forging and or hot rolling.
- a total cumulative transformation of at least 4: 1 or preferably of at least 7: 1 in different directions does not lead to the fiber course desired according to the invention.
- the intermetallic primary phases in the casting surface essentially only appear as uniformly distributed points. It is considered expedient if the quantitative ratio of the intermetallic primary phases cut in a grinding pattern between the casting surface and the sides of the ironed casting block perpendicular to the casting surface is set to greater than 1.5: 1. This means that at least 50% more intermetallic primary phases are cut in the casting surface or in a plane substantially perpendicular to the ironing direction than in a side or plane perpendicular to the casting surface.
- the ratio of the proportion of intermetallic primary phases cut in this way, in combination with the orientation of the casting surface, results in casting parts with optimized application behavior, since crack initiation and crack propagation in the casting surface are inhibited.
- the resistance to fatigue cracking is significantly greater than mold parts in which the intermetallic primary phases are substantially undirected.
- the molded part produced by the process according to the invention has a fiber profile, which requires that the intermetallic primary phases are arranged in fibers or lines. The mean length of an in-plane primary phase is measurable.
- there are lines of intermetallic primary phases whose length corresponds to at most 30% of the length of a line of an intermetallic primary phase which is substantially or exactly perpendicular to the casting surface.
- the mold part according to the invention consists of a hardenable copper alloy, which for this purpose contains alloy constituents which precipitate out as intermetallic phases.
- the curable copper alloy preferably contains nickel, which can be at least partially replaced by cobalt.
- the alloy contains at least one of the following alloying elements: chromium, zirconium, beryllium, silicon.
- the finished molded part is characterized by tailored to the specific application, excellent material properties, namely in particular a tensile strength of at least 600 MPa at a room temperature of 20 0 C and a tensile strength of at least 350 MPa at a temperature of 500 0 C.
- the electrical conductivity is at least 45%.
- the hardened copper alloy should have a grain size of at most 130 ⁇ m measured according to ASTM E 112.
- ASTM E 112 American Society for Testing and Materials is a standard test method for determining the average particle size.
- Figure 1 shows a micrograph of a cast round bolt, which is used as a starting material for the production of moldings of side dams of a Doppelbandg tellstrom.
- This is the typical cast structure of a CuNiSiCrZr alloy with CrSi-containing or NiZr-containing intermetallic primary phases in eutectic arrangement.
- the material is then reshaped to form a fine-grained structure and to achieve the required hardness and electrical conductivity with forming processes, such as extrusion, forging or rolling, then solution annealed and cured, so that the eutectic, inhomogeneous distribution of the intermetallic primary phases will change.
- FIG. 1 shows the distribution of the intermetallic primary phases of an already hot-formed ingot and thus the micrograph in the region of the casting surface of a casting component of a later casting. It can be clearly seen that the intermetallic primary phases are very finely and evenly distributed. The fiber orientation of the intermetallic primary phases is perpendicular to the casting surface, whereby the truncated primary phases appear as dots in this figure.
- the number of trimmed primary phases is about 1.7 times as high as in FIG. 3, which shows a microsection perpendicular to the casting surface and thus perpendicular to that of FIG. While in FIG. 2 the phase lines are only slightly recognizable and have a maximum length of approximately 100 .mu.m, considerably more primary phase lines can be seen in FIG. 3, the phase line lengths being in ranges of 100 to 400 .mu.m and partly in ranges of more than 400 .mu.m.
- the following table illustrates the mechanical properties and the fatigue resistance of moldings made of CuNiSiCrZr alloys produced by the process according to the invention.
- Exemplary embodiment A is based on an alloy of the following composition in% by weight: 2.1% Ni
- This alloy was melted in an induction crucible furnace and cast into a round block in a continuous casting process.
- the round block would be pre-dipped on a forging press in a temperature range between 950 0 C and 750 0 C and then formed into a cuboid.
- the cuboid was then forged lengthwise to a plate.
- This forged plate was then rolled on a hot rolling mill between 950 ° C and 800 0 C to final dimension.
- the total deformation ratio V in the longitudinal direction was 5.3: 1, starting from the precharge length to the finished rolled plate length.
- the plate was then solution heat treated and cured.
- the cooling after curing was carried out in a furnace with a defined cooling rate. Subsequently, the plate was sawed in horizontal stripes and from these strips casting moldings, the so-called dam blocks with dimensions of 70 mm x 50 mm x 40 mm were made.
- the mold parts of dimensions 60 mm ⁇ 50 mm ⁇ 40 mm or 50 mm ⁇ 50 mm ⁇ 40 mm can be removed in the same way.
- the casting surfaces of the casting moldings preferably come to lie substantially exactly perpendicular to the longitudinal direction of the plate and therefore also essentially exactly perpendicular to the ironing direction of the formed cast block or the fiber orientation.
- the table shows the mechanical / technical properties and the fatigue resistance of molded parts removed in comparison with molded parts whose fibers are parallel to the casting surface or which have not undergone any preferred forming with a ratio of at least 4: 1.
- the mold parts produced by the method according to the invention with an orientation of the intermetallic primary phases perpendicular to the casting surface show in the laboratory test a 17% better fatigue resistance than mold parts whose fiber layer is parallel to the casting surface.
- Embodiment B is based on an alloy having the composition: 2.2% Ni
- This alloy was also melted in an induction crucible furnace and cast in a continuous casting process into a round block.
- the round block was then on a hot rolling mill between 950 0 C and 800 C C to a plate verwalzt.
- the total deformation ratio V in the longitudinal direction, based on the initial length of the ingot, is 7.4: 1 and thus corresponds to the preferred inventive specification of at least 7: 1.
- Table 1 again shows the strength properties of the mold parts with primary phases running perpendicular to the ironing direction, in comparison to mold parts whose intermetallic primary phases run parallel to the casting direction.
- the mold parts according to the invention produced according to Embodiment B even show 26% better fatigue resistance than comparable moldings in the laboratory test with a fiber orientation parallel to the casting surface.
- the exemplary embodiments show that the casting moldings produced according to the invention have 17 to 26% better fatigue behavior of the casting surface than comparable casting mold parts with fiber and phase alignment parallel to the casting surface or without preferential orientation.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Continuous Casting (AREA)
- Forging (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/735,895 US20110056646A1 (en) | 2008-03-19 | 2009-03-19 | Method for producing cast molded parts as well as cast molded parts produced according to the method |
JP2011500041A JP5328886B2 (ja) | 2008-03-19 | 2009-03-19 | 鋳型部材の製造方法並びにその製造方法によって製造された鋳型部材 |
EP09721842A EP2280794A1 (de) | 2008-03-19 | 2009-03-19 | Verfahren zur herstellung von giessformteilen sowie nach dem verfahren hergestellte giessformteile |
CN200980105091.2A CN101945719B (zh) | 2008-03-19 | 2009-03-19 | 制备铸模部件的方法以及根据该方法制备的铸模部件 |
CA2718808A CA2718808C (en) | 2008-03-19 | 2009-03-19 | Method for producing cast molded parts as well as cast molded parts produced according to the method |
RU2010142458/02A RU2492961C2 (ru) | 2008-03-19 | 2009-03-19 | Способ получения частей литейных форм, а также части литейных форм, полученные этим способом |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008015096.7 | 2008-03-19 | ||
DE102008015096A DE102008015096A1 (de) | 2008-03-19 | 2008-03-19 | Verfahren zur Herstellung von Gießformteilen sowie nach dem Verfahren hergestellte Gießformteile |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009115081A1 true WO2009115081A1 (de) | 2009-09-24 |
Family
ID=40874853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2009/000359 WO2009115081A1 (de) | 2008-03-19 | 2009-03-19 | Verfahren zur herstellung von giessformteilen sowie nach dem verfahren hergestellte giessformteile |
Country Status (8)
Country | Link |
---|---|
US (1) | US20110056646A1 (de) |
EP (1) | EP2280794A1 (de) |
JP (1) | JP5328886B2 (de) |
CN (1) | CN101945719B (de) |
CA (1) | CA2718808C (de) |
DE (1) | DE102008015096A1 (de) |
RU (1) | RU2492961C2 (de) |
WO (1) | WO2009115081A1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0346645B1 (de) | 1988-06-14 | 1991-07-24 | KM-kabelmetal Aktiengesellschaft | Verwendung einer aushärtbaren Kupferlegierung |
US6565681B1 (en) * | 1994-08-06 | 2003-05-20 | Km-Kabelmetal Aktiengesellschaft | Age-hardenable copper alloy casting molds |
EP1314789A1 (de) * | 2001-11-21 | 2003-05-28 | KM Europa Metal Aktiengesellschaft | Aushärtbare Kupferlegierung als Werkstoff zur Herstellung von Giessformen |
EP1340564A2 (de) * | 2002-02-15 | 2003-09-03 | KM Europa Metal Aktiengesellschaft | Aushärtbare Kupferlegierung |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5370923A (en) * | 1976-12-06 | 1978-06-23 | Kobe Steel Ltd | Mold in copper alloy for steel continuous casting |
LU82346A1 (fr) * | 1980-04-08 | 1981-12-02 | Liege Usines Cuivre Zinc | Perfectionnements aux blocs de rive pour la coulee continue de barres de cuivre |
JPS5736040A (ja) * | 1980-08-11 | 1982-02-26 | Chuetsu Gokin Chuko Kk | Sekishutsukokagatarenzokuchuzoyoigatazairyo |
US4415374A (en) * | 1982-03-30 | 1983-11-15 | International Telephone And Telegraph Corporation | Fine grained metal composition |
JP2738130B2 (ja) * | 1990-05-25 | 1998-04-08 | 三菱マテリアル株式会社 | 高冷却能を有する高強度Cu合金製連続鋳造鋳型材およびその製造法 |
JPH04210438A (ja) * | 1990-12-13 | 1992-07-31 | Mitsubishi Materials Corp | 高強度Cu 合金製連続鋳造鋳型材 |
JP3303623B2 (ja) * | 1995-09-22 | 2002-07-22 | 三菱マテリアル株式会社 | 製鋼連続鋳造用銅合金モールド素材の製造方法およびそれにより製造されたモールド |
DE19928777A1 (de) * | 1999-06-23 | 2000-12-28 | Vacuumschmelze Gmbh | Gießrad über Schleudergießverfahren hergestelltes Gießrad |
TW590822B (en) * | 2001-11-21 | 2004-06-11 | Km Europa Metal Ag | Casting-roller for a two-roller-casting equipment and its manufacturing method |
DE10227034A1 (de) * | 2002-06-17 | 2003-12-24 | Km Europa Metal Ag | Kupfer-Gießform |
JP4118832B2 (ja) * | 2004-04-14 | 2008-07-16 | 三菱伸銅株式会社 | 銅合金及びその製造方法 |
CN100425717C (zh) * | 2006-08-16 | 2008-10-15 | 苏州有色金属加工研究院 | 引线框架用铜合金及其制造方法 |
-
2008
- 2008-03-19 DE DE102008015096A patent/DE102008015096A1/de not_active Withdrawn
-
2009
- 2009-03-19 RU RU2010142458/02A patent/RU2492961C2/ru not_active IP Right Cessation
- 2009-03-19 EP EP09721842A patent/EP2280794A1/de not_active Withdrawn
- 2009-03-19 CA CA2718808A patent/CA2718808C/en not_active Expired - Fee Related
- 2009-03-19 JP JP2011500041A patent/JP5328886B2/ja not_active Expired - Fee Related
- 2009-03-19 CN CN200980105091.2A patent/CN101945719B/zh not_active Expired - Fee Related
- 2009-03-19 US US12/735,895 patent/US20110056646A1/en not_active Abandoned
- 2009-03-19 WO PCT/DE2009/000359 patent/WO2009115081A1/de active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0346645B1 (de) | 1988-06-14 | 1991-07-24 | KM-kabelmetal Aktiengesellschaft | Verwendung einer aushärtbaren Kupferlegierung |
US6565681B1 (en) * | 1994-08-06 | 2003-05-20 | Km-Kabelmetal Aktiengesellschaft | Age-hardenable copper alloy casting molds |
EP1314789A1 (de) * | 2001-11-21 | 2003-05-28 | KM Europa Metal Aktiengesellschaft | Aushärtbare Kupferlegierung als Werkstoff zur Herstellung von Giessformen |
EP1340564A2 (de) * | 2002-02-15 | 2003-09-03 | KM Europa Metal Aktiengesellschaft | Aushärtbare Kupferlegierung |
Also Published As
Publication number | Publication date |
---|---|
EP2280794A1 (de) | 2011-02-09 |
JP5328886B2 (ja) | 2013-10-30 |
RU2492961C2 (ru) | 2013-09-20 |
US20110056646A1 (en) | 2011-03-10 |
RU2010142458A (ru) | 2012-04-27 |
CA2718808C (en) | 2015-05-26 |
JP2011518668A (ja) | 2011-06-30 |
CN101945719B (zh) | 2013-03-13 |
CA2718808A1 (en) | 2009-09-24 |
DE102008015096A1 (de) | 2009-09-24 |
CN101945719A (zh) | 2011-01-12 |
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