[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

BR112014019065A2 - - Google Patents

Info

Publication number
BR112014019065A2
BR112014019065A2 BR112014019065A BR112014019065A BR112014019065A2 BR 112014019065 A2 BR112014019065 A2 BR 112014019065A2 BR 112014019065 A BR112014019065 A BR 112014019065A BR 112014019065 A BR112014019065 A BR 112014019065A BR 112014019065 A2 BR112014019065 A2 BR 112014019065A2
Authority
BR
Brazil
Application number
BR112014019065A
Other versions
BR112014019065B1 (pt
BR112014019065A8 (pt
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
Application filed filed Critical
Publication of BR112014019065A2 publication Critical patent/BR112014019065A2/pt
Publication of BR112014019065A8 publication Critical patent/BR112014019065A8/pt
Publication of BR112014019065B1 publication Critical patent/BR112014019065B1/pt

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/10Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
    • C21D8/105Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies of ferrous alloys
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/10Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/001Ferrous alloys, e.g. steel alloys containing N
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/002Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/06Ferrous alloys, e.g. steel alloys containing aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/24Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/26Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/28Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/32Ferrous alloys, e.g. steel alloys containing chromium with boron
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Steel (AREA)
  • Extrusion Of Metal (AREA)
  • Heat Treatment Of Articles (AREA)
BR112014019065-8A 2012-03-07 2013-02-26 Método para produção de um material de aço resistente com resistência à fratura por tensão de sulfeto BR112014019065B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2012-049970 2012-03-07
JP2012049970 2012-03-07
PCT/JP2013/054866 WO2013133076A1 (ja) 2012-03-07 2013-02-26 耐硫化物応力割れ性に優れた高強度鋼材の製造方法

Publications (3)

Publication Number Publication Date
BR112014019065A2 true BR112014019065A2 (pt) 2017-06-20
BR112014019065A8 BR112014019065A8 (pt) 2017-07-11
BR112014019065B1 BR112014019065B1 (pt) 2019-03-26

Family

ID=49116558

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112014019065-8A BR112014019065B1 (pt) 2012-03-07 2013-02-26 Método para produção de um material de aço resistente com resistência à fratura por tensão de sulfeto

Country Status (15)

Country Link
US (1) US10287645B2 (pt)
EP (1) EP2824198B8 (pt)
JP (1) JP5387799B1 (pt)
CN (1) CN104039989B (pt)
AR (1) AR090243A1 (pt)
AU (1) AU2013228617B2 (pt)
BR (1) BR112014019065B1 (pt)
CA (1) CA2849287C (pt)
EA (1) EA025503B1 (pt)
ES (1) ES2755750T3 (pt)
IN (1) IN2014DN03395A (pt)
MX (1) MX371103B (pt)
SA (1) SA113340364B1 (pt)
UA (1) UA112792C2 (pt)
WO (1) WO2013133076A1 (pt)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112014030346B1 (pt) 2012-06-20 2020-05-05 Nippon Steel & Sumitomo Metal Corp materiais tubulares de campos de petróleo e métodos de produção dos mesmos
JP5333700B1 (ja) * 2012-11-05 2013-11-06 新日鐵住金株式会社 耐硫化物応力割れ性に優れた低合金油井管用鋼及び低合金油井管用鋼の製造方法
WO2015140235A1 (en) * 2014-03-18 2015-09-24 Innomaq 21, Sociedad Limitada Extremely high conductivity low cost steel
EP3153597B1 (en) 2014-06-09 2019-09-18 Nippon Steel Corporation Low alloy steel pipe for oil well
WO2016013197A1 (ja) * 2014-07-22 2016-01-28 Jfeスチール株式会社 鋼材の硫化物応力腐食割れ試験方法および耐硫化物応力腐食割れ性に優れた継目無鋼管
AR101200A1 (es) * 2014-07-25 2016-11-30 Nippon Steel & Sumitomo Metal Corp Tubo de acero de baja aleación para pozo de petróleo
AR101683A1 (es) * 2014-09-04 2017-01-04 Nippon Steel & Sumitomo Metal Corp Tubo de acero de pared gruesa para pozo de petróleo y método de producción del mismo
WO2016038809A1 (ja) * 2014-09-08 2016-03-17 Jfeスチール株式会社 油井用高強度継目無鋼管およびその製造方法
CN106687614B (zh) * 2014-09-08 2019-04-30 杰富意钢铁株式会社 油井用高强度无缝钢管及其制造方法
RU2664500C1 (ru) * 2014-10-17 2018-08-17 Ниппон Стил Энд Сумитомо Метал Корпорейшн Нефтепромысловая труба из низколегированной стали
JP6229640B2 (ja) * 2014-11-14 2017-11-15 Jfeスチール株式会社 継目無鋼管およびその製造方法
RU2661972C1 (ru) * 2014-11-18 2018-07-23 ДжФЕ СТИЛ КОРПОРЕЙШН Высокопрочная бесшовная стальная труба для трубных изделий нефтепромыслового сортамента и способ ее изготовления
CN107002201B (zh) * 2014-12-12 2019-06-11 日本制铁株式会社 油井管用低合金钢和低合金钢油井管的制造方法
JP5943165B1 (ja) * 2014-12-24 2016-06-29 Jfeスチール株式会社 油井用高強度継目無鋼管およびその製造方法
BR112017011971B1 (pt) * 2014-12-24 2021-05-04 Jfe Steel Corporation tubo de aço sem costura de alta resistência para produtos tubulares da indústria petrolífera e seu método de produção
JP6596954B2 (ja) * 2015-06-12 2019-10-30 日本製鉄株式会社 継目無鋼管及びその製造方法
WO2017016582A1 (de) * 2015-07-24 2017-02-02 Thyssenkrupp Steel Europe Ag Hochfester stahl mit hoher mindeststreckgrenze und verfahren zur herstellung eines solchen stahls
WO2017110027A1 (ja) 2015-12-22 2017-06-29 Jfeスチール株式会社 油井用高強度継目無鋼管およびその製造方法
WO2017149571A1 (ja) * 2016-02-29 2017-09-08 Jfeスチール株式会社 油井用低合金高強度継目無鋼管
MX2018010364A (es) 2016-02-29 2018-12-06 Jfe Steel Corp Tubo de acero sin costura de pared gruesa de alta resistencia y baja aleacion para productos tubulares de region petrolifera.
JP6468302B2 (ja) * 2016-03-10 2019-02-13 Jfeスチール株式会社 高強度油井用鋼管用素材および該素材を用いた高強度油井用鋼管の製造方法
CN107338396A (zh) * 2017-06-28 2017-11-10 包头钢铁(集团)有限责任公司 高淬透性储气库用无缝钢管及其生产方法
US11453924B2 (en) 2017-12-26 2022-09-27 Jfe Steel Corporation Low-alloy high-strength seamless steel pipe for oil country tubular goods
WO2019131037A1 (ja) * 2017-12-26 2019-07-04 Jfeスチール株式会社 油井用低合金高強度継目無鋼管
JP6551632B1 (ja) 2017-12-26 2019-07-31 Jfeスチール株式会社 油井用低合金高強度継目無鋼管
AR114712A1 (es) * 2018-03-27 2020-10-07 Nippon Steel & Sumitomo Metal Corp Material de acero adecuado para uso en entorno agrio
MX2022008030A (es) * 2019-12-26 2022-07-27 Jfe Steel Corp Tubo de acero sin costura de alta resistencia y metodo para fabricar el mismo.
WO2021131461A1 (ja) * 2019-12-26 2021-07-01 Jfeスチール株式会社 高強度継目無鋼管およびその製造方法
CN112281067A (zh) * 2020-10-29 2021-01-29 东营市元捷石油机械有限公司 一种耐腐蚀钢材及其制备方法和应用
CN115679196B (zh) * 2021-07-30 2024-04-05 宝山钢铁股份有限公司 一种自润滑汽车驱动轴用无缝钢管及其制造方法

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59232220A (ja) * 1983-06-14 1984-12-27 Sumitomo Metal Ind Ltd 耐硫化物腐食割れ性に優れた高強度鋼の製法
JPS609824A (ja) 1983-06-27 1985-01-18 Sumitomo Metal Ind Ltd 強靭鋼の製造方法
JPH0449935A (ja) * 1990-06-13 1992-02-19 Mitsubishi Electric Corp 食器洗浄機
JPH059571A (ja) * 1991-06-27 1993-01-19 Kawasaki Steel Corp 耐アンモニア割れ性に優れた高張力鋼の製造法
JPH06220536A (ja) 1993-01-22 1994-08-09 Nkk Corp 耐硫化物応力腐食割れ性に優れた高強度鋼管の製造法
DE69617002D1 (de) * 1995-05-15 2001-12-20 Sumitomo Metal Ind Verfahren zur herstellung von hochfesten nahtlosen stahlrohren mit hervorragender schwefel induzierter spannungsrisskorossionsbeständigkeit
JPH0959718A (ja) * 1995-06-14 1997-03-04 Sumitomo Metal Ind Ltd 高強度高耐食継目無鋼管の製造方法
JPH09249935A (ja) * 1996-03-13 1997-09-22 Sumitomo Metal Ind Ltd 耐硫化物応力割れ性に優れる高強度鋼材とその製造方法
JP3855300B2 (ja) 1996-04-19 2006-12-06 住友金属工業株式会社 継目無鋼管の製造方法および製造設備
JP3562353B2 (ja) 1998-12-09 2004-09-08 住友金属工業株式会社 耐硫化物応力腐食割れ性に優れる油井用鋼およびその製造方法
JP4058840B2 (ja) * 1999-04-09 2008-03-12 住友金属工業株式会社 靭性と耐硫化物応力腐食割れ性に優れる油井用鋼およびその製造方法
JP4367588B2 (ja) 1999-10-28 2009-11-18 住友金属工業株式会社 耐硫化物応力割れ性に優れた鋼管
JP3543708B2 (ja) 1999-12-15 2004-07-21 住友金属工業株式会社 耐硫化物応力腐食割れ性に優れた油井用鋼材およびそれを用いた油井用鋼管の製造方法
JP2006037147A (ja) * 2004-07-26 2006-02-09 Sumitomo Metal Ind Ltd 油井管用鋼材
JP4952213B2 (ja) 2006-02-20 2012-06-13 富士通株式会社 電子機器及びパスワード入力プログラム
US8926771B2 (en) * 2006-06-29 2015-01-06 Tenaris Connections Limited Seamless precision steel tubes with improved isotropic toughness at low temperature for hydraulic cylinders and process for obtaining the same
CA2650208A1 (en) 2007-03-30 2008-10-16 Sumitomo Metal Industries, Ltd. Low alloy steel, seamless steel oil country tubular goods, and method for producing seamless steel pipe
FR2942808B1 (fr) * 2009-03-03 2011-02-18 Vallourec Mannesmann Oil & Gas Acier faiblement allie a limite d'elasticite elevee et haute resistance a la fissuration sous contrainte par les sulfures.
AR075976A1 (es) * 2009-03-30 2011-05-11 Sumitomo Metal Ind Metodo para la manufactura de tuberias sin costura
JP5728836B2 (ja) * 2009-06-24 2015-06-03 Jfeスチール株式会社 耐硫化物応力割れ性に優れた油井用高強度継目無鋼管の製造方法

Also Published As

Publication number Publication date
AR090243A1 (es) 2014-10-29
US20150041030A1 (en) 2015-02-12
AU2013228617A1 (en) 2014-04-17
WO2013133076A1 (ja) 2013-09-12
CA2849287C (en) 2016-11-29
BR112014019065B1 (pt) 2019-03-26
ES2755750T3 (es) 2020-04-23
UA112792C2 (uk) 2016-10-25
BR112014019065A8 (pt) 2017-07-11
EP2824198B1 (en) 2019-09-18
SA113340364B1 (ar) 2015-07-22
EA201491650A1 (ru) 2015-01-30
EP2824198A4 (en) 2015-12-30
AU2013228617B2 (en) 2015-07-30
JPWO2013133076A1 (ja) 2015-07-30
CN104039989A (zh) 2014-09-10
CA2849287A1 (en) 2013-09-12
EP2824198A1 (en) 2015-01-14
JP5387799B1 (ja) 2014-01-15
MX2014009157A (es) 2014-10-13
MX371103B (es) 2020-01-17
EP2824198B8 (en) 2020-04-15
US10287645B2 (en) 2019-05-14
CN104039989B (zh) 2015-11-25
EA025503B1 (ru) 2016-12-30
IN2014DN03395A (pt) 2015-06-26

Similar Documents

Publication Publication Date Title
BR112014017635A2 (pt)
BR112014017614A2 (pt)
BR112014017625A2 (pt)
BR112014017592A2 (pt)
BR112014017659A2 (pt)
BR112014019065A2 (pt)
BR112014017646A2 (pt)
BR112014017638A2 (pt)
AR092201A1 (pt)
BR112014017607A2 (pt)
BR112013027865A2 (pt)
BR112014017634A2 (pt)
BR112014017609A2 (pt)
BR112014017644A2 (pt)
BR112014017588A2 (pt)
BR112014017647A2 (pt)
BR112014013184A8 (pt)
BR112014017618A2 (pt)
BR112014017630A2 (pt)
BR112014017652A2 (pt)
BR112014017621A2 (pt)
BR112014017622A2 (pt)
BR112014017627A2 (pt)
BR112014017623A2 (pt)
BR112014017631A2 (pt)

Legal Events

Date Code Title Description
B06T Formal requirements before examination [chapter 6.20 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 26/02/2013, OBSERVADAS AS CONDICOES LEGAIS.

B25D Requested change of name of applicant approved

Owner name: NIPPON STEEL CORPORATION (JP)