[go: up one dir, main page]

WO2008081674A1 - Ｓｉキルド鋼線材およびばね - Google Patents

Ｓｉキルド鋼線材およびばね Download PDF

Info

Publication number
WO2008081674A1
WO2008081674A1 PCT/JP2007/073338 JP2007073338W WO2008081674A1 WO 2008081674 A1 WO2008081674 A1 WO 2008081674A1 JP 2007073338 W JP2007073338 W JP 2007073338W WO 2008081674 A1 WO2008081674 A1 WO 2008081674A1
Authority
WO
WIPO (PCT)
Prior art keywords
steel wire
wire material
silicon
spring
killed steel
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.)
Ceased
Application number
PCT/JP2007/073338
Other languages
English (en)
French (fr)
Inventor
Tomoko Sugimura
Koichi Sakamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP2006356309A external-priority patent/JP4134223B2/ja
Priority claimed from JP2006356311A external-priority patent/JP4177405B2/ja
Priority claimed from JP2006356308A external-priority patent/JP4177403B2/ja
Priority claimed from JP2006356313A external-priority patent/JP4134225B2/ja
Priority to KR1020117015457A priority Critical patent/KR101146842B1/ko
Priority to BRPI0721174A priority patent/BRPI0721174B1/pt
Priority to US12/519,179 priority patent/US9290822B2/en
Priority to KR1020097013336A priority patent/KR101168480B1/ko
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to EP07832958.8A priority patent/EP2143812B1/en
Priority to CN2007800453832A priority patent/CN101553588B/zh
Priority to BR122015020249A priority patent/BR122015020249B1/pt
Publication of WO2008081674A1 publication Critical patent/WO2008081674A1/ja
Anticipated expiration legal-status Critical
Priority to US14/967,520 priority patent/US9725779B2/en
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/02—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for springs
    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • 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
    • 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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • 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
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/30—Ferrous alloys, e.g. steel alloys containing chromium with cobalt
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium

Landscapes

  • 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)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Springs (AREA)

Abstract

　介在物を低融点化して変形し易くすることで、疲労特性に優れたばねを得るためのＳｉキルド鋼線材、およびこうした鋼線材から得られる疲労特性に優れたばねを提供する。　　本発明のＳｉキルド鋼線材は、線材中に存在する酸化物系介在物が、ＳｉＯ２：３０～９０％、Ａｌ２Ｏ３：２～５０％、ＭｇＯ：３５％以下（０％を含まない）、ＣａＯ：５０％以下（０％を含まない），ＭｎＯ：２０以下（０％を含まない）およびＢａＯ：０．２～２０％を夫々含み、且つ（ＣａＯ＋ＭｇＯ）の合計含有量が３％以上である。
PCT/JP2007/073338 2006-12-28 2007-12-03 Ｓｉキルド鋼線材およびばね Ceased WO2008081674A1 (ja)

Priority Applications (8)

Application Number Priority Date Filing Date Title
BR122015020249A BR122015020249B1 (pt) 2006-12-28 2007-12-03 haste e mola de fio de aço acalmado com si
CN2007800453832A CN101553588B (zh) 2006-12-28 2007-12-03 硅镇静钢线材和弹簧
EP07832958.8A EP2143812B1 (en) 2006-12-28 2007-12-03 Silicon-killed steel wire material and spring
KR1020117015457A KR101146842B1 (ko) 2006-12-28 2007-12-03 Ｓｉ 킬드강 선재 및 스프링
BRPI0721174A BRPI0721174B1 (pt) 2006-12-28 2007-12-03 haste e mola de fio de aço acalamdo com si
US12/519,179 US9290822B2 (en) 2006-12-28 2007-12-03 Si-killed steel wire rod and spring
KR1020097013336A KR101168480B1 (ko) 2006-12-28 2007-12-03 Ｓｉ 킬드강 선재 및 스프링
US14/967,520 US9725779B2 (en) 2006-12-28 2015-12-14 Si-killed steel wire rod and spring

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP2006-356311 2006-12-28
JP2006-356309 2006-12-28
JP2006356309A JP4134223B2 (ja) 2006-12-28 2006-12-28 疲労特性に優れたＳｉキルド鋼線材およびばね
JP2006356313A JP4134225B2 (ja) 2006-12-28 2006-12-28 疲労特性に優れたＳｉキルド鋼線材およびばね
JP2006-356313 2006-12-28
JP2006356308A JP4177403B2 (ja) 2006-12-28 2006-12-28 疲労特性に優れたＳｉキルド鋼線材およびばね
JP2006356311A JP4177405B2 (ja) 2006-12-28 2006-12-28 疲労特性に優れたＳｉキルド鋼線材およびばね
JP2006-356308 2006-12-28

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US12/519,179 A-371-Of-International US9290822B2 (en) 2006-12-28 2007-12-03 Si-killed steel wire rod and spring
US14/967,520 Division US9725779B2 (en) 2006-12-28 2015-12-14 Si-killed steel wire rod and spring

Publications (1)

Publication Number Publication Date
WO2008081674A1 true WO2008081674A1 (ja) 2008-07-10

Family

ID=39588358

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/073338 Ceased WO2008081674A1 (ja) 2006-12-28 2007-12-03 Ｓｉキルド鋼線材およびばね

Country Status (6)

Country Link
US (2) US9290822B2 (ja)
EP (2) EP2143812B1 (ja)
KR (2) KR101146842B1 (ja)
CN (1) CN102031450A (ja)
BR (2) BRPI0721174B1 (ja)
WO (1) WO2008081674A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2248925A4 (en) * 2008-01-28 2013-12-11 Kobe Steel Ltd STEEL OF EXCELLENT PROCESSABILITY FOR MACHINE STRUCTURES
CN111575585A (zh) * 2020-05-27 2020-08-25 江苏联峰实业有限公司 一种耐磨、高强度的碳素结构钢材料

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012018144A1 (ja) 2010-08-04 2012-02-09 日本発條株式会社 ばねおよびその製造方法
CN103415637B (zh) * 2011-03-01 2014-08-06 新日铁住金株式会社 拉丝性和拉丝后的疲劳特性优异的高碳钢线材
JP5937973B2 (ja) * 2013-01-15 2016-06-22 株式会社神戸製鋼所 疲労特性に優れたＳｉキルド鋼線材、およびそれを用いたばね
CN104451441A (zh) * 2014-11-08 2015-03-25 江苏天舜金属材料集团有限公司 桥梁用预应力钢丝及其生产工艺
WO2021002074A1 (ja) * 2019-07-01 2021-01-07 住友電気工業株式会社 鋼線およびばね
CN116287555A (zh) * 2023-02-21 2023-06-23 安阳钢铁集团有限责任公司 一种60Si2Cr弹簧钢夹杂物控制方法

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6299436A (ja) 1985-10-26 1987-05-08 Nippon Steel Corp 高清浄度鋼
JPS6299437A (ja) 1985-10-26 1987-05-08 Nippon Steel Corp 高清浄度鋼
JPS63140068A (ja) 1986-12-01 1988-06-11 Nippon Steel Corp 疲労強度の優れたばね鋼
JPS63186852A (ja) * 1987-01-30 1988-08-02 Nippon Steel Corp 耐熱性の良好な超高張力鋼線
JPS63192846A (ja) * 1987-02-04 1988-08-10 Nippon Steel Corp 極細鋼線用高張力鋼線材および極細鋼線の製造方法
JPS63227748A (ja) 1986-12-19 1988-09-22 Nippon Steel Corp 高強度ばね用鋼線およびその製造方法
JPH05320827A (ja) 1992-05-26 1993-12-07 Kobe Steel Ltd 疲労特性の優れたばね用鋼及びばね用鋼線並びにばね
JPH09310145A (ja) 1996-05-17 1997-12-02 Kobe Steel Ltd 疲労特性に優れたばね用鋼
JP2005029888A (ja) 2003-06-18 2005-02-03 Kobe Steel Ltd 疲労強度および冷間加工性に優れた高清浄度鋼
JP2006016639A (ja) * 2004-06-30 2006-01-19 Kobe Steel Ltd 疲労強度又は冷間加工性に優れた高清浄度鋼
JP2006104506A (ja) * 2004-10-01 2006-04-20 Kobe Steel Ltd 疲労強度または冷間加工性に優れた高清浄度鋼の製造方法
JP2006342400A (ja) * 2005-06-09 2006-12-21 Nippon Steel Corp 高強度ばね用鋼および高強度ばね用熱処理鋼線

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4094666A (en) * 1977-05-24 1978-06-13 Metal Research Corporation Method for refining molten iron and steels
JP2654099B2 (ja) 1988-06-21 1997-09-17 株式会社神戸製鋼所 清浄鋼の製造方法
JPH0234748A (ja) * 1988-07-22 1990-02-05 Kobe Steel Ltd 耐疲労性に優れた珪素キルド鋼
JP3504521B2 (ja) 1998-12-15 2004-03-08 株式会社神戸製鋼所 疲労特性に優れたばね用鋼
WO2000077271A1 (fr) 1999-06-16 2000-12-21 Nippon Steel Corporation Tige de fil d'acier a teneur elevee en carbone presentant une excellente capacite d'etirage et de resistance a la fatigue apres etirage du fil
JP4315825B2 (ja) * 2003-06-18 2009-08-19 株式会社神戸製鋼所 疲労特性に優れた高清浄ばね用鋼線
EP1707644B1 (en) 2004-01-22 2012-02-15 Kabushiki Kaisha Kobe Seiko Sho Method for producing high cleanliness steel excellent in fatigue strength or cold workability
JP4347786B2 (ja) 2004-11-24 2009-10-21 株式会社神戸製鋼所 高清浄度ばね用鋼
JP4476834B2 (ja) * 2005-02-09 2010-06-09 株式会社神戸製鋼所 耐遅れ破壊性に優れた高強度鋼
JP2005264335A (ja) 2005-04-28 2005-09-29 Sumitomo Metal Ind Ltd 疲労強度に優れたＳｉ脱酸鋼およびその製造方法

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6299436A (ja) 1985-10-26 1987-05-08 Nippon Steel Corp 高清浄度鋼
JPS6299437A (ja) 1985-10-26 1987-05-08 Nippon Steel Corp 高清浄度鋼
JPS63140068A (ja) 1986-12-01 1988-06-11 Nippon Steel Corp 疲労強度の優れたばね鋼
JPS63227748A (ja) 1986-12-19 1988-09-22 Nippon Steel Corp 高強度ばね用鋼線およびその製造方法
JPS63186852A (ja) * 1987-01-30 1988-08-02 Nippon Steel Corp 耐熱性の良好な超高張力鋼線
JPS63192846A (ja) * 1987-02-04 1988-08-10 Nippon Steel Corp 極細鋼線用高張力鋼線材および極細鋼線の製造方法
JPH05320827A (ja) 1992-05-26 1993-12-07 Kobe Steel Ltd 疲労特性の優れたばね用鋼及びばね用鋼線並びにばね
JPH09310145A (ja) 1996-05-17 1997-12-02 Kobe Steel Ltd 疲労特性に優れたばね用鋼
JP2005029888A (ja) 2003-06-18 2005-02-03 Kobe Steel Ltd 疲労強度および冷間加工性に優れた高清浄度鋼
JP2006016639A (ja) * 2004-06-30 2006-01-19 Kobe Steel Ltd 疲労強度又は冷間加工性に優れた高清浄度鋼
JP2006104506A (ja) * 2004-10-01 2006-04-20 Kobe Steel Ltd 疲労強度または冷間加工性に優れた高清浄度鋼の製造方法
JP2006342400A (ja) * 2005-06-09 2006-12-21 Nippon Steel Corp 高強度ばね用鋼および高強度ばね用熱処理鋼線

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"182 and 183rd Nishiyama Memorial Technical Lecture", THE IRON AND STEEL INSTITUTE OF JAPAN, pages: 131 - 134
See also references of EP2143812A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2248925A4 (en) * 2008-01-28 2013-12-11 Kobe Steel Ltd STEEL OF EXCELLENT PROCESSABILITY FOR MACHINE STRUCTURES
CN111575585A (zh) * 2020-05-27 2020-08-25 江苏联峰实业有限公司 一种耐磨、高强度的碳素结构钢材料

Also Published As

Publication number Publication date
KR20110082200A (ko) 2011-07-18
KR20090087093A (ko) 2009-08-14
US20100024923A1 (en) 2010-02-04
US9725779B2 (en) 2017-08-08
EP2143812A1 (en) 2010-01-13
US20160130674A1 (en) 2016-05-12
EP2143812B1 (en) 2013-11-27
CN102031450A (zh) 2011-04-27
KR101146842B1 (ko) 2012-05-16
EP2527485A1 (en) 2012-11-28
KR101168480B1 (ko) 2012-07-26
BRPI0721174A2 (pt) 2014-03-18
BR122015020249B1 (pt) 2016-07-26
EP2527485B1 (en) 2014-02-19
EP2143812A4 (en) 2011-05-11
US9290822B2 (en) 2016-03-22
BRPI0721174B1 (pt) 2017-05-30

Similar Documents

Publication Publication Date Title
WO2008081674A1 (ja) Ｓｉキルド鋼線材およびばね
EP2109173A3 (en) Fuel cell stack
WO2008156091A1 (ja) ガラス組成物
IN2012DN03223A (ja)
EP4567011A3 (en) Composition for glass fiber, glass fiber, glass-fiber-containing composite material containing glass fiber, and method for manufacturing glass fiber
WO2008145924A3 (fr) Produit refractaire pour element d'empilage d'un regenerateur d'un four verrier
PL1971559T3 (pl) Kompozycje szkliwa
ZA200803012B (en) Bitumen composition
TW200606121A (en) Glass for display substrate
WO2009030703A3 (en) Novel nanoparticles
EA200800644A1 (ru) Спечённое огнеупорное изделие, обладающее повышенной устойчивостью к температурному шоку
MX2008001142A (es) Composicion de vidrio verde.
WO2009004349A3 (en) Glass polycarboxylate cements
WO2009027610A3 (fr) Produit refractaire a forte teneur en zircone dope
MX2010009301A (es) Sorgo dulce transgenico con composicion de lignina alterada y procedimiento para su preparacion.
NZ582626A (en) Thermostabilization of proteins
WO2009028147A1 (ja) 接合用組成物
ATE452113T1 (de) Auf zirconium basierendes sinterprodukt
WO2005106061A3 (de) Eisen-chrom-aluminium-legierung
EP2565713A3 (en) Binary silica-titania glass articles having a ternary doped silica-titania critical zone
WO2006120343A3 (fr) Procede pour le traitement de surface d'une matiere metallique ou fibreuse
WO2008139893A1 (ja) 高炉用自溶性ペレットおよびその製造方法
BR112013024128A2 (pt) material de aço com fadiga de suporte com excelentes propriedades de fatiga de contato de laminação e parte do suporte
EP2028167A3 (en) Fire resistant glass fiber
WO2010103484A3 (fr) Melange de grains d'alumine-zircone fondu

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200780045383.2

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07832958

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2007832958

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 12519179

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: 1020097013336

Country of ref document: KR

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 1020117015457

Country of ref document: KR

ENP Entry into the national phase

Ref document number: PI0721174

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20090615