WO2019230466A1 - 絶縁被膜付き電磁鋼板およびその製造方法、前記電磁鋼板を用いてなる変圧器の鉄心、変圧器ならびに変圧器の誘電損失の低減方法 - Google Patents
絶縁被膜付き電磁鋼板およびその製造方法、前記電磁鋼板を用いてなる変圧器の鉄心、変圧器ならびに変圧器の誘電損失の低減方法 Download PDFInfo
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- WO2019230466A1 WO2019230466A1 PCT/JP2019/019839 JP2019019839W WO2019230466A1 WO 2019230466 A1 WO2019230466 A1 WO 2019230466A1 JP 2019019839 W JP2019019839 W JP 2019019839W WO 2019230466 A1 WO2019230466 A1 WO 2019230466A1
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- WIPO (PCT)
- Prior art keywords
- steel sheet
- insulating coating
- dielectric loss
- transformer
- electrical steel
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 60
- 239000010959 steel Substances 0.000 title claims abstract description 60
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- 238000000034 method Methods 0.000 title claims description 46
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- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 claims description 33
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- 229910001224 Grain-oriented electrical steel Inorganic materials 0.000 description 23
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 19
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- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 11
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 10
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- 229910052802 copper Inorganic materials 0.000 description 4
- PLDDOISOJJCEMH-UHFFFAOYSA-N neodymium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Nd+3].[Nd+3] PLDDOISOJJCEMH-UHFFFAOYSA-N 0.000 description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
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- 229910052779 Neodymium Inorganic materials 0.000 description 3
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- 229910010413 TiO 2 Inorganic materials 0.000 description 2
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- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
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- 229910052797 bismuth Inorganic materials 0.000 description 1
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- 230000020169 heat generation Effects 0.000 description 1
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- 230000006872 improvement Effects 0.000 description 1
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 description 1
- 239000004137 magnesium phosphate Substances 0.000 description 1
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
- C23C22/74—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process for obtaining burned-in conversion coatings
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/78—Pretreatment of the material to be coated
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/16—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
- H01F1/18—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets with insulating coating
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/02—Cores, Yokes, or armatures made from sheets
-
- 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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- H—ELECTRICITY
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- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
Definitions
- Patent Documents 5 and 6 can be cited.
- the techniques described in Patent Documents 5 and 6 are techniques for appropriately controlling the dielectric properties of the insulating members of the windings and bobbins to improve the insulation properties, and trying to appropriately control the dielectric properties of the iron core material. Not what you want.
- the relative dielectric constant ( ⁇ r ) of the measured insulating coating is shown in FIG. 1, and the dielectric loss tangent (tan ⁇ ) is shown in FIG.
- the variation in measured values is large at low frequencies, but the variation in measured values is small enough to be ignored at 1000 Hz. Therefore, the dielectric properties of the material were evaluated by the relative dielectric constant and electrostatic tangent at 1000 Hz.
- the insulating property of the coating could not be maintained and the dielectric properties could not be measured.
- a coating treatment liquid in which a low dielectric loss substance is added to a known coating treatment liquid is prepared in the same manner as described above. That is, using a coating treatment liquid containing a low dielectric loss material, this coating treatment liquid is applied to the surface of a ground iron (electrical steel sheet), an electromagnetic steel sheet having a forsterite coating layer on the surface, and baked.
- a method of forming an insulating coating layer containing a low dielectric loss material is mentioned.
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Abstract
Description
[1]電磁鋼板表面の少なくとも片面に、1000Hzにおける比誘電率が15.0以下かつ誘電正接が20.0以下である絶縁被膜を有する、絶縁被膜付き電磁鋼板。
[2]前記絶縁被膜が、中空セラミックス粒子を含む絶縁被膜層を有する、[1]に記載の絶縁被膜付き電磁鋼板。
[3]前記絶縁被膜が、1MHzでの誘電損失係数が0.10以下の低誘電損物質を含む絶縁被膜層を有する、[1]に記載の絶縁被膜付き電磁鋼板。
[4]前記[2]に記載の絶縁被膜付き電磁鋼板の製造方法であって、
中空セラミックス粒子を含有する絶縁被膜層形成用処理液を用い、該処理液を、電磁鋼板の表面またはフォルステライト被膜層を有する電磁鋼板の表面に塗布し、焼付処理する、絶縁被膜付き電磁鋼板の製造方法。
[5]前記[3]に記載の絶縁被膜付き電磁鋼板の製造方法であって、
前記低誘電損物質を含有する絶縁被膜層形成用処理液を用い、該処理液を、電磁鋼板の表面またはフォルステライト被膜層を有する電磁鋼板の表面に塗布し、焼付処理する、絶縁被膜付き電磁鋼板の製造方法。
[6]前記[3]に記載の絶縁被膜付き電磁鋼板の製造方法であって、
前記低誘電損物質を析出可能な絶縁被膜層形成用処理液を用い、該処理液を、電磁鋼板の表面またはフォルステライト被膜層を有する電磁鋼板の表面に塗布し、焼付処理した後、1050℃以上の温度で30秒以上加熱する結晶化処理を施して絶縁被膜層中に前記低誘電損物質を析出させる、絶縁被膜付き電磁鋼板の製造方法。
[7]上記[1]~[3]のいずれかに記載の絶縁被膜付き電磁鋼板を用いてなる変圧器の鉄心。
[8]上記[7]に記載の変圧器の鉄心を備える変圧器。
[9]変圧器の誘電損失を低減する方法であって、
該変圧器の鉄心を、電磁鋼板表面の少なくとも片面に1000Hzにおける比誘電率が15.0以下かつ誘電正接が20.0以下である絶縁被膜を有する絶縁被膜付き電磁鋼板を積層して構成する、変圧器の誘電損失の低減方法。
[10]前記絶縁被膜が、中空セラミックス粒子を含む絶縁被膜層を有する、[9]に記載の変圧器の誘電損失の低減方法。
[11]前記絶縁被膜が、1MHzでの誘電損失係数が0.10以下の低誘電損物質を含む絶縁被膜層を有する、[9]に記載の変圧器の誘電損失の低減方法。
Cは、ゴス方位結晶粒の発生に有用な成分であり、かかる作用を有効に発揮させるためには0.001%以上を含有させるとよい。一方、C含有量が0.10%を超えると脱炭焼鈍によっても脱炭不良を起こす場合がある。したがって、C含有量は0.001~0.10%の範囲が好ましい。
Siは、電気抵抗を高めて鉄損を低下させるとともに、鉄のBCC組織を安定化させて高温の熱処理を可能とするために有効な成分であり、Si含有量は1.0%以上とすることが好ましい。しかし、Si含有量が5.0%を超えると通常の冷間圧延が困難となる。したがって、Si含有量は1.0~5.0%の範囲が好ましい。Si含有量は、2.0~5.0%の範囲がより好ましい。
Mnは、鋼の熱間脆性の改善に有効に寄与するだけでなく、SやSeが混在している場合には、MnSやMnSe等の析出物を形成し結晶粒成長の抑制剤としての機能を発揮するので、Mnの含有量は0.01%以上とすることが好ましい。一方、Mn含有量が1.0%を超えるとMnSe等の析出物の粒径が粗大化してインヒビターとしての効果が失われる場合がある。したがって、Mn含有量は0.01~1.0%の範囲が好ましい。
Alは、鋼中でAlNを形成して分散第二相としてインヒビターの作用をする有用成分であるのでsol.Alとして0.003%以上含有することが好ましい。一方、Al含有量がsol.Alとして0.050%を超えるとAlNが粗大に析出してインヒビターとしての作用が失われる場合がある。したがって、Al含有量はsol.Alとして0.003~0.050%の範囲が好ましい。
NもAlと同様にAlNを形成するために有用な成分であるので、0.001%以上含有することが好ましい。一方、0.020%を超えてNを含有するとスラブ加熱時にふくれ等を生じる場合がある。したがって、N含有量は0.001~0.020%の範囲が好ましい。
S、Seは、MnやCuと結合してMnSe、MnS、Cu2-xSe、Cu2-xSを形成し鋼中の分散第二相としてインヒビターの作用を発揮する有用成分である。有用な添加効果を得るためには、これらS、Seの合計の含有量を0.001%以上とすることが好ましい。一方、S、Seの合計の含有量が0.05%を超える場合はスラブ加熱時の固溶が不完全となるだけでなく、製品表面の欠陥の原因ともなる場合がある。したがって、S、Seの含有量は、SまたはSeの1種を含有する場合、SとSeの2種を含有する場合のいずれも合計で0.001~0.05%の範囲が好ましい。
P=fεrC0V2tanδ ・・・(1)
f:周波数、C0:真空の静電容量、V:電圧である。
質量%で、C:0.04%、Si:3.25%、Mn:0.08%、sol.Al:0.015%、N:0.006%、S:0.002%、Cu:0.05%、Sb:0.01%を含有する珪素鋼板スラブを、1250℃、60分加熱後、熱間圧延して2.4mmの板厚の熱延板とし、1000℃、1分間の焼鈍を施した後、冷間圧延により0.27mmの最終板厚とし、引き続いて室温から820℃まで加熱速度80℃/sにて昇温し、湿潤雰囲気下で820℃、60秒の一次再結晶焼鈍をおこなった。引き続き100質量部のMgOに対してTiO2を3質量部混合した焼鈍分離剤を水スラリー状にしてから塗布、乾燥した。この鋼板を300℃から800℃間を100時間かけて昇温させた後、1200℃まで50℃/hrで昇温させ、1200℃で5時間焼鈍する最終仕上げ焼鈍をおこないフォルステライト被膜層が形成された方向性電磁鋼板を準備した。
質量%で、C:0.04%、Si:3.25%、Mn:0.08%、sol.Al:0.015%、N:0.006%、S:0.002%、Cu:0.05%、Sb:0.01%を含有する珪素鋼板スラブを1350℃、20分加熱後、熱間圧延して2.2mmの板厚の熱延板とし、1000℃、1分間の焼鈍を施した後、冷間圧延により0.23mmの最終板厚とし、引き続いて室温から820℃まで加熱速度50℃/sにて昇温し、湿潤雰囲気下で820℃、60秒の一次再結晶焼鈍をおこなった。引き続き100質量部のMgOに対してTiO2を3質量部混合した焼鈍分離剤を水スラリー状にしてから塗布、乾燥した。この鋼板を300℃から800℃間を100時間かけて昇温させた後、1200℃まで50℃/hrで昇温させ、1200℃で5時間焼鈍する最終仕上げ焼鈍をおこないフォルステライト被膜層が形成された方向性電磁鋼板を準備した。
Claims (11)
- 電磁鋼板表面の少なくとも片面に、1000Hzにおける比誘電率が15.0以下かつ誘電正接が20.0以下である絶縁被膜を有する、絶縁被膜付き電磁鋼板。
- 前記絶縁被膜が、中空セラミックス粒子を含む絶縁被膜層を有する、請求項1に記載の絶縁被膜付き電磁鋼板。
- 前記絶縁被膜が、1MHzでの誘電損失係数が0.10以下の低誘電損物質を含む絶縁被膜層を有する、請求項1に記載の絶縁被膜付き電磁鋼板。
- 請求項2に記載の絶縁被膜付き電磁鋼板の製造方法であって、
中空セラミックス粒子を含有する絶縁被膜層形成用処理液を用い、該処理液を、電磁鋼板の表面またはフォルステライト被膜層を有する電磁鋼板の表面に塗布し、焼付処理する、絶縁被膜付き電磁鋼板の製造方法。 - 請求項3に記載の絶縁被膜付き電磁鋼板の製造方法であって、
前記低誘電損物質を含有する絶縁被膜層形成用処理液を用い、該処理液を、電磁鋼板の表面またはフォルステライト被膜層を有する電磁鋼板の表面に塗布し、焼付処理する、絶縁被膜付き電磁鋼板の製造方法。 - 請求項3に記載の絶縁被膜付き電磁鋼板の製造方法であって、
前記低誘電損物質を析出可能な絶縁被膜層形成用処理液を用い、該処理液を、電磁鋼板の表面またはフォルステライト被膜層を有する電磁鋼板の表面に塗布し、焼付処理した後、1050℃以上の温度で30秒以上加熱する結晶化処理を施して絶縁被膜層中に前記低誘電損物質を析出させる、絶縁被膜付き電磁鋼板の製造方法。 - 請求項1~3のいずれかに記載の絶縁被膜付き電磁鋼板を用いてなる変圧器の鉄心。
- 請求項7に記載の変圧器の鉄心を備える変圧器。
- 変圧器の誘電損失を低減する方法であって、
該変圧器の鉄心を、電磁鋼板表面の少なくとも片面に1000Hzにおける比誘電率が15.0以下かつ誘電正接が20.0以下である絶縁被膜を有する絶縁被膜付き電磁鋼板を積層して構成する、変圧器の誘電損失の低減方法。 - 前記絶縁被膜が、中空セラミックス粒子を含む絶縁被膜層を有する、請求項9に記載の変圧器の誘電損失の低減方法。
- 前記絶縁被膜が、1MHzでの誘電損失係数が0.10以下の低誘電損物質を含む絶縁被膜層を有する、請求項9に記載の変圧器の誘電損失の低減方法。
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CA3097333A CA3097333C (en) | 2018-05-30 | 2019-05-20 | Electrical steel sheet having insulating coating, method for producing the same, transformer core and transformer using the electrical steel sheet, and method for reducing dielectric loss in transformer |
CN201980036435.2A CN112204170B (zh) | 2018-05-30 | 2019-05-20 | 带有绝缘被膜的电磁钢板及其制造方法 |
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JP2019545815A JP6645632B1 (ja) | 2018-05-30 | 2019-05-20 | 絶縁被膜付き電磁鋼板およびその製造方法、前記電磁鋼板を用いてなる変圧器の鉄心、変圧器ならびに変圧器の誘電損失の低減方法 |
RU2020139167A RU2759366C1 (ru) | 2018-05-30 | 2019-05-20 | Лист электротехнической стали, имеющий изолирующее покрытие, способ получения указанного листа, сердечник трансформатора и трансформатор, в котором используется лист электротехнической стали, и способ снижения диэлектрических потерь в трансформаторе |
US17/056,847 US20210202145A1 (en) | 2018-05-30 | 2019-05-20 | Electrical steel sheet having insulating coating, method for producing the same, transformer core and transformer using the electrical steel sheet, and method for reducing dielectric loss in transformer |
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JPWO2019230466A1 (ja) | 2020-06-11 |
CN112204170A (zh) | 2021-01-08 |
CN112204170B (zh) | 2022-04-19 |
RU2759366C1 (ru) | 2021-11-12 |
EP3767008A1 (en) | 2021-01-20 |
CA3097333A1 (en) | 2019-12-05 |
KR102542094B1 (ko) | 2023-06-12 |
KR20210002568A (ko) | 2021-01-08 |
JP6645632B1 (ja) | 2020-02-14 |
MX2020012796A (es) | 2021-02-15 |
CA3097333C (en) | 2023-08-01 |
US20210202145A1 (en) | 2021-07-01 |
EP3767008A4 (en) | 2021-06-02 |
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