JP2012140679A - 圧粉磁心用鉄基軟磁性粉末およびその製造方法並びに圧粉磁心 - Google Patents
圧粉磁心用鉄基軟磁性粉末およびその製造方法並びに圧粉磁心 Download PDFInfo
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- JP2012140679A JP2012140679A JP2010294024A JP2010294024A JP2012140679A JP 2012140679 A JP2012140679 A JP 2012140679A JP 2010294024 A JP2010294024 A JP 2010294024A JP 2010294024 A JP2010294024 A JP 2010294024A JP 2012140679 A JP2012140679 A JP 2012140679A
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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
- H01F1/20—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 particles, e.g. powder
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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
- H01F1/20—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 particles, e.g. powder
- H01F1/22—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 particles, e.g. powder pressed, sintered, or bound together
- H01F1/24—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 particles, e.g. powder pressed, sintered, or bound together the particles being insulated
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- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/102—Metallic powder coated with organic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/142—Thermal or thermo-mechanical treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/145—Chemical treatment, e.g. passivation or decarburisation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/16—Metallic particles coated with a non-metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
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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
- H01F3/08—Cores, Yokes, or armatures made from powder
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
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- H—ELECTRICITY
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- 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
- H01F1/20—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 particles, e.g. powder
- H01F1/22—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 particles, e.g. powder pressed, sintered, or bound together
- H01F1/24—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 particles, e.g. powder pressed, sintered, or bound together the particles being insulated
- H01F1/26—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 particles, e.g. powder pressed, sintered, or bound together the particles being insulated by macromolecular organic substances
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- 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
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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
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- Powder Metallurgy (AREA)
- Soft Magnetic Materials (AREA)
Abstract
【解決手段】圧粉磁心用の鉄基軟磁性粉末であって、前記鉄基軟磁性粉末粒子断面を走査型電子顕微鏡で観察したとき、円相当直径:0.1〜3μmの介在物個数が1×104個/mm2以下であり、且つ円相当直径:3μm超の介在物個数が10個/mm2以下である。
【選択図】なし
Description
熱処理温度(K)×log(熱処理時間(分))≧2400 …(1)
熱処理温度:1100℃以上であって粉末を保持する温度(K)
熱処理時間:上記熱処理温度で粉末を保持する時間(分)
尚、1100℃以上の保持温度を複数持つような多段熱処理の場合、夫々の熱処理温度(保持温度)・熱処理時間(保持時間)について、熱処理温度(K)×log(熱処理時間(分))を計算した合計値を2400と比較し(1)式とする。
熱処理温度(K)×log(熱処理時間(分))≧2400 …(1)
熱処理温度:1100℃以上であって粉末を保持する温度(K)
熱処理時間:上記熱処理温度で粉末を保持する時間(分)
Claims (4)
- 圧粉磁心用の鉄基軟磁性粉末であって、前記鉄基軟磁性粉末の粒子断面を走査型電子顕微鏡で観察したとき、円相当直径:0.1〜3μmの介在物個数が1×104個/mm2以下であり、且つ円相当直径:3μm超の介在物個数が10個/mm2以下であることを特徴とする圧粉磁心用鉄基軟磁性粉末。
- 表面に絶縁皮膜が形成されているものである請求項1に記載の圧粉磁心用鉄基軟磁性粉末。
- 請求項1に記載の圧粉磁心用鉄基軟磁性粉末を製造するにあたり、原料粉末を水素含有雰囲気下、1100℃以上で、下記(1)式を満足する温度・時間条件での熱処理を施すことを特徴とする圧粉磁心用鉄基軟磁性粉末の製造方法。
熱処理温度(K)×log(熱処理時間(分))≧2400 …(1)
熱処理温度:1100℃以上であって粉末を保持する温度(K)
熱処理時間:上記熱処理温度で粉末を保持する時間(分) - 請求項1または2に記載の圧粉磁心用鉄基軟磁性粉末を用いてなる圧粉磁心。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010294024A JP5438669B2 (ja) | 2010-12-28 | 2010-12-28 | 圧粉磁心用鉄基軟磁性粉末および圧粉磁心 |
US13/306,228 US9275779B2 (en) | 2010-12-28 | 2011-11-29 | Iron-based soft magnetic powder for dust core, preparation process thereof, and dust core |
EP11009460A EP2472530A1 (en) | 2010-12-28 | 2011-11-30 | Iron-based soft magnetic powder for dust core, preparation process thereof, and dust core |
CN2011104270720A CN102543346A (zh) | 2010-12-28 | 2011-12-19 | 压粉磁芯用铁基软磁性粉末及其制造方法和压粉磁芯 |
KR1020110143504A KR20120075425A (ko) | 2010-12-28 | 2011-12-27 | 압분 자심용 철계 연자성 분말 및 그의 제조방법 및 압분 자심 |
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JP2010294024A JP5438669B2 (ja) | 2010-12-28 | 2010-12-28 | 圧粉磁心用鉄基軟磁性粉末および圧粉磁心 |
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JP2012140679A true JP2012140679A (ja) | 2012-07-26 |
JP5438669B2 JP5438669B2 (ja) | 2014-03-12 |
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JP2010294024A Active JP5438669B2 (ja) | 2010-12-28 | 2010-12-28 | 圧粉磁心用鉄基軟磁性粉末および圧粉磁心 |
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US (1) | US9275779B2 (ja) |
EP (1) | EP2472530A1 (ja) |
JP (1) | JP5438669B2 (ja) |
KR (1) | KR20120075425A (ja) |
CN (1) | CN102543346A (ja) |
Cited By (5)
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WO2014034616A1 (ja) * | 2012-08-31 | 2014-03-06 | 株式会社神戸製鋼所 | 圧粉磁心用鉄粉および圧粉磁心の製造方法 |
WO2014171065A1 (ja) * | 2013-04-19 | 2014-10-23 | Jfeスチール株式会社 | 圧粉磁芯用鉄粉 |
WO2014171105A1 (ja) * | 2013-04-19 | 2014-10-23 | Jfeスチール株式会社 | 圧粉磁芯用鉄粉および圧粉磁芯用絶縁被覆鉄粉 |
JP2016507887A (ja) * | 2012-12-04 | 2016-03-10 | ペ、ウン ヨンBAE, Eun−Young | 高温成形による高投資率の非晶質圧粉磁心コア及びその製造方法 |
JP2016519430A (ja) * | 2013-03-28 | 2016-06-30 | ビーエーエスエフ ソシエタス・ヨーロピアBasf Se | 非腐食性の軟磁性粉末 |
Families Citing this family (7)
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JP5189691B1 (ja) | 2011-06-17 | 2013-04-24 | 株式会社神戸製鋼所 | 圧粉磁心用鉄基軟磁性粉末およびその製造方法、ならびに圧粉磁心 |
CN105895290B (zh) * | 2016-04-27 | 2018-03-09 | 横店集团东磁股份有限公司 | 一种耐高温磁粉制备方法 |
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CN110457729B (zh) * | 2019-05-17 | 2023-04-14 | 陕西飞机工业(集团)有限公司 | 半封闭结构钢热处理零件的优化方法、装置及轴类零件 |
WO2024103175A1 (en) * | 2022-11-18 | 2024-05-23 | Starpax Biopharma Inc. | Magnetic head for magnetic field-based system for targeted medical intervention in a subject |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005336513A (ja) * | 2004-05-24 | 2005-12-08 | Sumitomo Electric Ind Ltd | 軟磁性材料の製造方法、軟磁性材料、圧粉磁心の製造方法、および圧粉磁心 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01139739A (ja) | 1987-11-26 | 1989-06-01 | Kawasaki Steel Corp | 磁気特性の優れた純鉄 |
JP3307300B2 (ja) | 1997-11-04 | 2002-07-24 | フジテック株式会社 | エスカレータのステップおよびステップ変形方法 |
JP4240823B2 (ja) * | 2000-09-29 | 2009-03-18 | 日本冶金工業株式会社 | Fe−Ni系パーマロイ合金の製造方法 |
EP1632582B1 (en) * | 2003-05-06 | 2011-01-26 | Nippon Steel Corporation | Non-oriented electrical steel sheet excellent in core loss and manufacturing method thereof |
SE0302427D0 (sv) * | 2003-09-09 | 2003-09-09 | Hoeganaes Ab | Iron based soft magnetic powder |
CN100442403C (zh) * | 2004-09-30 | 2008-12-10 | 住友电气工业株式会社 | 软磁材料,粉末磁芯和制备软磁材料的方法 |
JP2007092162A (ja) | 2005-02-03 | 2007-04-12 | Jfe Steel Kk | 高圧縮性鉄粉、およびそれを用いた圧粉磁芯用鉄粉と圧粉磁芯 |
JP4710485B2 (ja) | 2005-08-25 | 2011-06-29 | 住友電気工業株式会社 | 軟磁性材料の製造方法、および圧粉磁心の製造方法 |
JP4630251B2 (ja) | 2006-09-11 | 2011-02-09 | 株式会社神戸製鋼所 | 圧粉磁心および圧粉磁心用の鉄基粉末 |
CN101615465B (zh) * | 2008-05-30 | 2012-10-17 | 株式会社日立制作所 | 压粉磁体用软磁性粉末和使用其的压粉磁体 |
JP2010047788A (ja) | 2008-08-19 | 2010-03-04 | Kobe Steel Ltd | 鉄基合金水アトマイズ粉末とその鉄基合金水アトマイズ粉末の製造方法 |
-
2010
- 2010-12-28 JP JP2010294024A patent/JP5438669B2/ja active Active
-
2011
- 2011-11-29 US US13/306,228 patent/US9275779B2/en active Active
- 2011-11-30 EP EP11009460A patent/EP2472530A1/en not_active Ceased
- 2011-12-19 CN CN2011104270720A patent/CN102543346A/zh active Pending
- 2011-12-27 KR KR1020110143504A patent/KR20120075425A/ko not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005336513A (ja) * | 2004-05-24 | 2005-12-08 | Sumitomo Electric Ind Ltd | 軟磁性材料の製造方法、軟磁性材料、圧粉磁心の製造方法、および圧粉磁心 |
Cited By (13)
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US9583261B2 (en) | 2012-08-31 | 2017-02-28 | Kobe Steel, Ltd. | Iron powder for powder magnetic core and process for producing powder magnetic core |
WO2014034616A1 (ja) * | 2012-08-31 | 2014-03-06 | 株式会社神戸製鋼所 | 圧粉磁心用鉄粉および圧粉磁心の製造方法 |
JP2016507887A (ja) * | 2012-12-04 | 2016-03-10 | ペ、ウン ヨンBAE, Eun−Young | 高温成形による高投資率の非晶質圧粉磁心コア及びその製造方法 |
JP2016519430A (ja) * | 2013-03-28 | 2016-06-30 | ビーエーエスエフ ソシエタス・ヨーロピアBasf Se | 非腐食性の軟磁性粉末 |
CN105142823A (zh) * | 2013-04-19 | 2015-12-09 | 杰富意钢铁株式会社 | 压粉磁芯用铁粉 |
JP2014210966A (ja) * | 2013-04-19 | 2014-11-13 | Jfeスチール株式会社 | 圧粉磁芯用鉄粉 |
WO2014171105A1 (ja) * | 2013-04-19 | 2014-10-23 | Jfeスチール株式会社 | 圧粉磁芯用鉄粉および圧粉磁芯用絶縁被覆鉄粉 |
JP6056862B2 (ja) * | 2013-04-19 | 2017-01-11 | Jfeスチール株式会社 | 圧粉磁芯用鉄粉および圧粉磁芯用絶縁被覆鉄粉 |
JPWO2014171105A1 (ja) * | 2013-04-19 | 2017-02-16 | Jfeスチール株式会社 | 圧粉磁芯用鉄粉および圧粉磁芯用絶縁被覆鉄粉 |
WO2014171065A1 (ja) * | 2013-04-19 | 2014-10-23 | Jfeスチール株式会社 | 圧粉磁芯用鉄粉 |
CN105142823B (zh) * | 2013-04-19 | 2017-07-28 | 杰富意钢铁株式会社 | 压粉磁芯用铁粉 |
US10109406B2 (en) | 2013-04-19 | 2018-10-23 | Jfe Steel Corporation | Iron powder for dust core and insulation-coated iron powder for dust core |
US10410780B2 (en) | 2013-04-19 | 2019-09-10 | Jfe Steel Corporation | Iron powder for dust core |
Also Published As
Publication number | Publication date |
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US20120164453A1 (en) | 2012-06-28 |
CN102543346A (zh) | 2012-07-04 |
JP5438669B2 (ja) | 2014-03-12 |
US9275779B2 (en) | 2016-03-01 |
EP2472530A1 (en) | 2012-07-04 |
KR20120075425A (ko) | 2012-07-06 |
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