JP5480903B2 - 高処理のエレクトロブロー法 - Google Patents
高処理のエレクトロブロー法 Download PDFInfo
- Publication number
- JP5480903B2 JP5480903B2 JP2011526256A JP2011526256A JP5480903B2 JP 5480903 B2 JP5480903 B2 JP 5480903B2 JP 2011526256 A JP2011526256 A JP 2011526256A JP 2011526256 A JP2011526256 A JP 2011526256A JP 5480903 B2 JP5480903 B2 JP 5480903B2
- Authority
- JP
- Japan
- Prior art keywords
- fibers
- spinning
- solution
- fiber
- solvent
- Prior art date
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 32
- 239000000835 fiber Substances 0.000 claims description 67
- 238000009987 spinning Methods 0.000 claims description 49
- 229920000642 polymer Polymers 0.000 claims description 31
- 239000002904 solvent Substances 0.000 claims description 27
- 238000007664 blowing Methods 0.000 claims description 12
- 230000005684 electric field Effects 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 33
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 24
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 12
- 229910052757 nitrogen Inorganic materials 0.000 description 12
- 239000000203 mixture Substances 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 150000008282 halocarbons Chemical class 0.000 description 8
- 229930195733 hydrocarbon Natural products 0.000 description 8
- 150000002430 hydrocarbons Chemical class 0.000 description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 7
- -1 polydienes Polymers 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- UAEPNZWRGJTJPN-UHFFFAOYSA-N methylcyclohexane Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 4
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 4
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 4
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 4
- 239000004793 Polystyrene Substances 0.000 description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 description 4
- 239000003570 air Substances 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000001307 helium Substances 0.000 description 4
- 229910052734 helium Inorganic materials 0.000 description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 4
- 239000012456 homogeneous solution Substances 0.000 description 4
- 229920002223 polystyrene Polymers 0.000 description 4
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- GYNNXHKOJHMOHS-UHFFFAOYSA-N methyl-cycloheptane Natural products CC1CCCCCC1 GYNNXHKOJHMOHS-UHFFFAOYSA-N 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 3
- 229920000193 polymethacrylate Polymers 0.000 description 3
- 239000004926 polymethyl methacrylate Substances 0.000 description 3
- 229920000098 polyolefin Polymers 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 2
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 229920002492 poly(sulfone) Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 229920002284 Cellulose triacetate Polymers 0.000 description 1
- 229920002319 Poly(methyl acrylate) Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 229960000448 lactic acid Drugs 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004750 melt-blown nonwoven Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001432 poly(L-lactide) Polymers 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920001610 polycaprolactone Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920005594 polymer fiber Polymers 0.000 description 1
- 239000011116 polymethylpentene Substances 0.000 description 1
- 229920000306 polymethylpentene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000003442 weekly effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
- D01D5/0038—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion the fibre formed by solvent evaporation, i.e. dry electro-spinning
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0069—Electro-spinning characterised by the electro-spinning apparatus characterised by the spinning section, e.g. capillary tube, protrusion or pin
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/08—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of halogenated hydrocarbons
- D01F6/10—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of halogenated hydrocarbons from polyvinyl chloride or polyvinylidene chloride
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Nonwoven Fabrics (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US19110208P | 2008-09-05 | 2008-09-05 | |
| US61/191,102 | 2008-09-05 | ||
| PCT/US2009/056157 WO2010028326A1 (en) | 2008-09-05 | 2009-09-08 | High throughput electroblowing process |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2012502197A JP2012502197A (ja) | 2012-01-26 |
| JP2012502197A5 JP2012502197A5 (enExample) | 2012-10-18 |
| JP5480903B2 true JP5480903B2 (ja) | 2014-04-23 |
Family
ID=41343361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011526256A Active JP5480903B2 (ja) | 2008-09-05 | 2009-09-08 | 高処理のエレクトロブロー法 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20100059906A1 (enExample) |
| EP (2) | EP2321451B1 (enExample) |
| JP (1) | JP5480903B2 (enExample) |
| KR (1) | KR20110050557A (enExample) |
| CN (1) | CN102144054A (enExample) |
| BR (1) | BRPI0913530A2 (enExample) |
| WO (1) | WO2010028326A1 (enExample) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115025B (zh) * | 2011-01-07 | 2012-12-26 | 山东理工大学 | 采用超声聚焦微喷制备聚苯乙烯微球微阵列的方法 |
| CN102071542B (zh) * | 2011-02-22 | 2012-08-29 | 天津工业大学 | 一种聚合物纳微纤维非织造布的制备方法 |
| CN102121173B (zh) * | 2011-02-22 | 2012-05-30 | 天津工业大学 | 一种超细纤维非织造布吸音隔热材料的制备方法 |
| JP2016053232A (ja) * | 2014-09-04 | 2016-04-14 | 富士フイルム株式会社 | ナノファイバ製造方法 |
| CN104372422A (zh) * | 2014-11-07 | 2015-02-25 | 江西先材纳米纤维科技有限公司 | 快速制备蓬松聚合物纳米纤维的装置及方法 |
| KR102466378B1 (ko) * | 2017-10-30 | 2022-11-11 | 주식회사 엘지화학 | 고흡수성 수지 부직포 및 이의 제조 방법 |
| KR102099662B1 (ko) * | 2017-11-09 | 2020-04-13 | 단국대학교 천안캠퍼스 산학협력단 | 환자맞춤형 조직공학을 위한 섬유 스캐폴드의 제조방법 |
| KR102548151B1 (ko) * | 2021-09-23 | 2023-06-28 | 한국과학기술원 | 전기 방사 조성물 및 이를 이용한 생분해성 필터 멤브레인 |
| CN116815335B (zh) * | 2023-08-30 | 2023-11-24 | 江苏青昀新材料有限公司 | 一种闪蒸纺丝液储存的金属膜储能器及闪蒸纺丝系统 |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1522605A (en) * | 1974-09-26 | 1978-08-23 | Ici Ltd | Preparation of fibrous sheet product |
| JPH03220305A (ja) * | 1989-11-21 | 1991-09-27 | I C I Japan Kk | 静電紡糸の製造方法 |
| US6183670B1 (en) * | 1997-09-23 | 2001-02-06 | Leonard Torobin | Method and apparatus for producing high efficiency fibrous media incorporating discontinuous sub-micron diameter fibers, and web media formed thereby |
| US6713011B2 (en) * | 2001-05-16 | 2004-03-30 | The Research Foundation At State University Of New York | Apparatus and methods for electrospinning polymeric fibers and membranes |
| US6520425B1 (en) * | 2001-08-21 | 2003-02-18 | The University Of Akron | Process and apparatus for the production of nanofibers |
| KR100549140B1 (ko) * | 2002-03-26 | 2006-02-03 | 이 아이 듀폰 디 네모아 앤드 캄파니 | 일렉트로-브로운 방사법에 의한 초극세 나노섬유 웹제조방법 |
| US20030215624A1 (en) * | 2002-04-05 | 2003-11-20 | Layman John M. | Electrospinning of vinyl alcohol polymer and copolymer fibers |
| KR100491228B1 (ko) * | 2003-02-24 | 2005-05-24 | 김학용 | 나노섬유로 구성된 연속상 필라멘트의 제조방법 |
| JP5456232B2 (ja) * | 2003-03-07 | 2014-03-26 | ヴァージニア コモンウェルス ユニヴァーシティー | 静電処理されたフェノール樹脂材料および方法 |
| EP1709219A4 (en) * | 2003-09-05 | 2008-03-05 | Univ Louisiana State | NANOFIBRES AND DEVICE FOR MANUFACTURING NANOFIBRES BY REACTIVE ELECTROLYZATION |
| US7662332B2 (en) * | 2003-10-01 | 2010-02-16 | The Research Foundation Of State University Of New York | Electro-blowing technology for fabrication of fibrous articles and its applications of hyaluronan |
| US20060012084A1 (en) * | 2004-07-13 | 2006-01-19 | Armantrout Jack E | Electroblowing web formation process |
| US7887311B2 (en) * | 2004-09-09 | 2011-02-15 | The Research Foundation Of State University Of New York | Apparatus and method for electro-blowing or blowing-assisted electro-spinning technology |
| EP1796822A4 (en) * | 2004-10-06 | 2008-09-17 | Res Foundation Suny | INTENSE FLOW FILTRATION MEDIA WITH LOW ENCRYPTION |
| US7846374B2 (en) * | 2004-11-05 | 2010-12-07 | E. I. Du Pont De Nemours And Company | Blowing gases in electroblowing process |
| US20060135020A1 (en) * | 2004-12-17 | 2006-06-22 | Weinberg Mark G | Flash spun web containing sub-micron filaments and process for forming same |
| US8808608B2 (en) * | 2004-12-27 | 2014-08-19 | E I Du Pont De Nemours And Company | Electroblowing web formation process |
| US7582247B2 (en) * | 2005-08-17 | 2009-09-01 | E. I. Du Pont De Nemours And Company | Electroblowing fiber spinning process |
| US8211353B2 (en) * | 2008-09-05 | 2012-07-03 | E. I. Du Pont De Nemours And Company | Fiber spinning process using a weakly interacting polymer |
-
2009
- 2009-09-03 US US12/553,603 patent/US20100059906A1/en not_active Abandoned
- 2009-09-08 WO PCT/US2009/056157 patent/WO2010028326A1/en not_active Ceased
- 2009-09-08 JP JP2011526256A patent/JP5480903B2/ja active Active
- 2009-09-08 EP EP09792294.2A patent/EP2321451B1/en active Active
- 2009-09-08 EP EP18206666.2A patent/EP3470556B1/en active Active
- 2009-09-08 BR BRPI0913530A patent/BRPI0913530A2/pt not_active IP Right Cessation
- 2009-09-08 CN CN200980134737XA patent/CN102144054A/zh active Pending
- 2009-09-08 KR KR1020117007758A patent/KR20110050557A/ko not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN102144054A (zh) | 2011-08-03 |
| WO2010028326A1 (en) | 2010-03-11 |
| EP2321451A1 (en) | 2011-05-18 |
| EP3470556A1 (en) | 2019-04-17 |
| BRPI0913530A2 (pt) | 2019-09-24 |
| EP3470556B1 (en) | 2020-06-10 |
| EP2321451B1 (en) | 2018-12-19 |
| US20100059906A1 (en) | 2010-03-11 |
| JP2012502197A (ja) | 2012-01-26 |
| KR20110050557A (ko) | 2011-05-13 |
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Legal Events
| Date | Code | Title | Description |
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| RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20120222 |
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| A521 | Request for written amendment filed |
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