BR0317550A - Aço inoxidável martensìtico de alta resistência excelente na resistência à corrosão por gás dióxido de carbono e na resistência à fratura por corrosão por estresse de sulfeto - Google Patents

Aço inoxidável martensìtico de alta resistência excelente na resistência à corrosão por gás dióxido de carbono e na resistência à fratura por corrosão por estresse de sulfeto

Info

Publication number
BR0317550A
BR0317550A BR0317550-2A BR0317550A BR0317550A BR 0317550 A BR0317550 A BR 0317550A BR 0317550 A BR0317550 A BR 0317550A BR 0317550 A BR0317550 A BR 0317550A
Authority
BR
Brazil
Prior art keywords
resistance
carbon dioxide
stainless steel
martensitic stainless
steel
Prior art date
Application number
BR0317550-2A
Other languages
English (en)
Other versions
BRPI0317550B1 (pt
Inventor
Hideki Takabe
Masakatsu Ueda
Original Assignee
Sumitomo Metal Ind
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 by Sumitomo Metal Ind filed Critical Sumitomo Metal Ind
Publication of BR0317550A publication Critical patent/BR0317550A/pt
Publication of BRPI0317550B1 publication Critical patent/BRPI0317550B1/pt

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
    • C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • 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
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • 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
    • 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
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/004—Dispersions; Precipitations
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite

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)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

"AçO INOXIDáVEL MARTENSìTICO DE ALTA RESISTêNCIA EXCELENTE NA RESISTêNCIA à CORROSãO POR GáS DIóXIDO DE CARBONO E NA RESISTêNCIA à FRATURA POR CORROSãO POR ESTRESSE DE SULFETO". A presente invenção refere-se a um aço inoxidável martensítico no qual os elementos especificados em uma composição de aço são limitados. O aço inoxidável martensítico pode ter alta resistência de 0,2% da prova de estresse de 860 MPa ou mais e excelentes resistência à corrosão por dióxido de carbono e resistência à ruptura por corrosão por estresse de sulfeto pela limitação da composição do aço dos elementos especificados e a definição do teor de Mo no aço pelas relações com os valores de IM bem como pela conformação da microestrutura do aço com principalmente martensita temperada, carboneto precipitado durante a têmpera e compostos intermetálicos tais como fase Laves, fase <sym> e similares. Como resultado, os aços inoxidáveis martensíticos da presente invenção podem ser aplicados a aços práticos, que podem ser amplamente usados em tubulações para poços de petróleo e similares sob ambientes incluindo gás dióxido de carbono, sulfeto de hidrogênio, íons de cloro ou dois ou mais deles, em amplos campos.
BRPI0317550A 2002-12-20 2003-12-18 aço inoxidável martensítico de alta resistência excelente na resistência à corrosão por gás dióxido de carbono e na resistência à fratura por corrosão por estresse de sulfeto BRPI0317550B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002369595 2002-12-20
PCT/JP2003/016288 WO2004057050A1 (ja) 2002-12-20 2003-12-18 耐炭酸ガス腐食性および耐硫化物応力腐食割れ性に優れた高強度マルテンサイトステンレス鋼

Publications (2)

Publication Number Publication Date
BR0317550A true BR0317550A (pt) 2005-11-22
BRPI0317550B1 BRPI0317550B1 (pt) 2016-06-14

Family

ID=32677145

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0317550A BRPI0317550B1 (pt) 2002-12-20 2003-12-18 aço inoxidável martensítico de alta resistência excelente na resistência à corrosão por gás dióxido de carbono e na resistência à fratura por corrosão por estresse de sulfeto

Country Status (12)

Country Link
US (1) US20050224143A1 (pt)
EP (1) EP1584699A4 (pt)
JP (1) JP4428237B2 (pt)
CN (1) CN100368579C (pt)
AR (1) AR042494A1 (pt)
AU (1) AU2003289437B2 (pt)
BR (1) BRPI0317550B1 (pt)
CA (1) CA2509581C (pt)
MX (1) MXPA05006562A (pt)
NO (1) NO337858B1 (pt)
RU (1) RU2307876C2 (pt)
WO (1) WO2004057050A1 (pt)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4337712B2 (ja) * 2004-11-19 2009-09-30 住友金属工業株式会社 マルテンサイト系ステンレス鋼
BRPI0609856A2 (pt) * 2005-04-28 2010-05-11 Jfe Steel Corp tubo de aço inoxidável tendo excelente capacidade de dilatação para produtos tubulares para campos petrolìferos
CN100453685C (zh) * 2006-07-11 2009-01-21 无锡西姆莱斯石油专用管制造有限公司 高Cr系不锈钢无缝油井管及其生产方法
EP2060644A4 (en) * 2006-08-22 2016-02-17 Nippon Steel & Sumitomo Metal Corp MARTENSITIC STAINLESS STEEL
RU2421539C2 (ru) 2006-08-31 2011-06-20 Сумитомо Метал Индастриз, Лтд. Мартенситная нержавеющая сталь для сварных структур
JP5145793B2 (ja) * 2007-06-29 2013-02-20 Ｊｆｅスチール株式会社 油井管用マルテンサイト系ステンレス継目無鋼管およびその製造方法
JP4951564B2 (ja) 2008-03-25 2012-06-13 住友化学株式会社 再生硫黄回収装置
EP2256225B1 (en) * 2008-03-28 2018-04-25 Nippon Steel & Sumitomo Metal Corporation Stainless steel for use in oil well tube
US20110132501A1 (en) * 2008-09-04 2011-06-09 Jfe Steel Corporation Martensitic stainless steel seamless tube for oil country tubular goods and manufacturing method thereof
AR073884A1 (es) 2008-10-30 2010-12-09 Sumitomo Metal Ind Tubo de acero inoxidable de alta resistencia excelente en resistencia a la fisuracion bajo tension por sulfuros y a la corrosion de gas de acido carbonico en alta temperatura.
AR076669A1 (es) * 2009-05-18 2011-06-29 Sumitomo Metal Ind Acero inoxidable para pozos de petroleo, tubo de acero inoxidable para pozos de petroleo, y metodo de fabricacion de acero inoxidable para pozos de petroleo
CA2795326C (en) * 2010-04-28 2016-05-17 Sumitomo Metal Industries, Ltd. High-strength stainless steel for oil well and high-strength stainless steel pipe for oil well
IT1403689B1 (it) * 2011-02-07 2013-10-31 Dalmine Spa Tubi in acciaio ad alta resistenza con eccellente durezza a bassa temperatura e resistenza alla corrosione sotto tensioni da solfuri.
CN102534418A (zh) * 2012-02-29 2012-07-04 宝山钢铁股份有限公司 一种油套管用马氏体不锈钢及其制造方法
JP5348354B1 (ja) * 2012-03-26 2013-11-20 新日鐵住金株式会社 油井用ステンレス鋼及び油井用ステンレス鋼管
CN102866172A (zh) * 2012-08-31 2013-01-09 广东电网公司电力科学研究院 一种T/P92钢Laves相含量测定方法
KR101521071B1 (ko) 2012-09-27 2015-05-15 히타치 긴조쿠 가부시키가이샤 석출 강화형 마르텐사이트강 및 그의 제조방법
BR102014005015A8 (pt) * 2014-02-28 2017-12-26 Villares Metals S/A aço inoxidável martensítico-ferrítico, produto manufaturado, processo para a produção de peças ou barras forjadas ou laminadas de aço inoxidável martensítico-ferrítico e processo para a produção de tudo sem costura de aço inoxidável martensítico-ferrítico
WO2016001705A1 (en) * 2014-07-03 2016-01-07 Arcelormittal Method for manufacturing a high strength steel sheet having improved formability and ductility and sheet obtained
WO2016001703A1 (en) 2014-07-03 2016-01-07 Arcelormittal Method for manufacturing a high strength steel sheet and sheet obtained by the method
EP3260564B1 (en) 2015-02-20 2022-08-17 JFE Steel Corporation High-strength seamless thick-walled steel pipe and process for producing same
AU2017266359B2 (en) * 2016-05-20 2019-10-03 Nippon Steel Corporation Steel bar for downhole member and downhole member
CN105755393A (zh) * 2016-05-24 2016-07-13 江苏金基特钢有限公司 石油管道专用钢材及其制备方法
CN106399862B (zh) * 2016-09-28 2017-12-29 睿智钢业有限公司 一种高强防腐钢材及其制备方法和应用
MX2019004721A (es) 2016-10-25 2019-06-17 Jfe Steel Corp Tubo sin costura de acero inoxidable martensitico para productos tubulares de region petrolifera, y metodo para la produccion del mismo.
CN110462085A (zh) * 2017-03-28 2019-11-15 日本制铁株式会社 马氏体不锈钢材
RU2650353C1 (ru) * 2017-09-18 2018-04-11 Юлия Алексеевна Щепочкина Сталь
BR112020004793A2 (pt) 2017-09-29 2020-09-24 Jfe Steel Corporation tubo sem costura de aço inoxidável martensítico para produtos tubulares para regiões petrolíferas, e método para sua fabricação
MX2020002857A (es) 2017-09-29 2020-07-24 Jfe Steel Corp Tubo sin costura de acero inoxidable martensitico para productos tubulares de region petrolifera, y metodo para la fabricacion del mismo.
WO2019065116A1 (ja) 2017-09-29 2019-04-04 Ｊｆｅスチール株式会社 油井管用マルテンサイト系ステンレス継目無鋼管およびその製造方法
RU2659530C1 (ru) * 2017-11-27 2018-07-02 Юлия Алексеевна Щепочкина Сталь для изготовления ювелирных изделий
JP6680409B1 (ja) * 2018-05-25 2020-04-15 Ｊｆｅスチール株式会社 油井管用マルテンサイト系ステンレス継目無鋼管およびその製造方法
WO2019225280A1 (ja) 2018-05-25 2019-11-28 Ｊｆｅスチール株式会社 油井管用マルテンサイト系ステンレス継目無鋼管およびその製造方法
AR116495A1 (es) 2018-09-27 2021-05-12 Nippon Steel Corp Material de acero inoxidable martensítico
CN112955576A (zh) 2018-11-05 2021-06-11 杰富意钢铁株式会社 油井管用马氏体系不锈钢无缝钢管及其制造方法
CN111793773B (zh) * 2019-08-09 2021-10-12 中南大学 一种通过Laves相及μ相复合强硬化的高速钢及其制备方法
US20230175107A1 (en) * 2020-04-01 2023-06-08 Nippon Steel Corporation Steel material

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51133807A (en) * 1975-05-14 1976-11-19 Hitachi Ltd Turbo type impeller with high performance
JP2861024B2 (ja) * 1989-03-15 1999-02-24 住友金属工業株式会社 油井用マルテンサイト系ステンレス鋼材とその製造方法
JPH03120337A (ja) * 1989-10-03 1991-05-22 Sumitomo Metal Ind Ltd マルテンサイト系ステンレス鋼と製造方法
JPH05156409A (ja) * 1991-11-29 1993-06-22 Nippon Steel Corp 耐海水性に優れた高強度マルテンサイトステンレス鋼とその製造方法
WO1996003532A1 (en) * 1994-07-21 1996-02-08 Nippon Steel Corporation Martensitic stainless steel having excellent hot workability and sulfide stress cracking resistance
MY114984A (en) * 1995-01-13 2003-03-31 Hitachi Metals Ltd High hardness martensitic stainless steel with good pitting corrosion resistance
JP3533055B2 (ja) * 1996-03-27 2004-05-31 Ｊｆｅスチール株式会社 耐食性および溶接性に優れたラインパイプ用マルテンサイト鋼
JP3254146B2 (ja) * 1996-10-29 2002-02-04 川崎製鉄株式会社 耐応力腐食割れ性および高温引張り特性に優れた油井管用高強度マルテンサイト系ステンレス鋼
JP3555579B2 (ja) * 1997-07-18 2004-08-18 住友金属工業株式会社 高耐食性マルテンサイト系ステンレス鋼
JP2000063997A (ja) * 1998-08-25 2000-02-29 Sumitomo Metal Ind Ltd マルテンサイト系ステンレス溶接鋼管
JP3743226B2 (ja) * 1998-10-12 2006-02-08 住友金属工業株式会社 ダウンホール部材用マルテンサイト系ステンレス鋼
JP2000192196A (ja) * 1998-12-22 2000-07-11 Sumitomo Metal Ind Ltd 油井用マルテンサイト系ステンレス鋼
JP3485022B2 (ja) * 1999-05-17 2004-01-13 住友金属工業株式会社 熱間加工性に優れたマルテンサイト系ステンレス鋼材
JP2001107198A (ja) * 1999-10-07 2001-04-17 Nippon Steel Corp 耐ｓｓｃ性に優れたマルテンサイト系ステンレス鋼ラインパイプおよびその製造方法
JP4250851B2 (ja) * 2000-03-30 2009-04-08 住友金属工業株式会社 マルテンサイト系ステンレス鋼および製造方法
CN1114715C (zh) * 2000-11-15 2003-07-16 浦项产业科学研究院 具有高机械强度和抗腐蚀的马氏体不锈钢

Also Published As

Publication number Publication date
US20050224143A1 (en) 2005-10-13
CN100368579C (zh) 2008-02-13
JPWO2004057050A1 (ja) 2006-04-20
AR042494A1 (es) 2005-06-22
AU2003289437A1 (en) 2004-07-14
RU2005122929A (ru) 2006-02-10
EP1584699A1 (en) 2005-10-12
MXPA05006562A (es) 2005-08-16
RU2307876C2 (ru) 2007-10-10
CN1729306A (zh) 2006-02-01
WO2004057050A1 (ja) 2004-07-08
CA2509581C (en) 2010-04-06
NO337858B1 (no) 2016-07-04
JP4428237B2 (ja) 2010-03-10
NO20052986D0 (no) 2005-06-17
CA2509581A1 (en) 2004-07-08
NO20052986L (no) 2005-09-15
EP1584699A4 (en) 2009-06-03
AU2003289437B2 (en) 2007-09-20
BRPI0317550B1 (pt) 2016-06-14

Similar Documents

Publication Publication Date Title
BR0317550A (pt) Aço inoxidável martensìtico de alta resistência excelente na resistência à corrosão por gás dióxido de carbono e na resistência à fratura por corrosão por estresse de sulfeto
BRPI0413626A (pt) tubo de aço inoxdável de alta resistência para uso em um poço de óleo tendo resistência à corrosão superior e método de fabricação do mesmo
RU2418880C2 (ru) Высокопрочный коррозионно-стойкий сплав для использования в нефтяной промышленности
BRPI0507314A (pt) tubo de aço sem costura para poços de petróleo excelente em resistência à fratura por estresse por sulfeto e método de produção do mesmo
BRPI0513430A (pt) aço para canos de aço
BRPI0519639A8 (pt) processo para fabricar um aço carbono de alta resistência, dútil, resistente a corrosão e aço carbono ligado
BR0318308A (pt) tubo de aço sem costura de alta resistência mecánica, bom grau de dureza, boa resistência a fraturas no metal, de base e na zona afetada por calor (haz) e boa resistência à corrosão e processo para sua fabricação
DE502005010628D1 (de) Höchstfester nichtrostender austenitischer stahl
AR036880A1 (es) Acero inoxidable martensitico y procedimiento para fabricarlo
KR950032683A (ko) 내식성 듀플렉스 스테인레스강
ATE338836T1 (de) Martensitischer rostfreier stahl mit hoher härte und mit guter beständigkeit gegen korrosion
BR112012028294A2 (pt) &#34;aço inoxidável austenítico de baixo teor de níquel e uso do referido aço&#34;
BR0209091A (pt) Processo para a produção de aços inoxidáveis com melhor resistência à corrosão
ATE382718T1 (de) Federstahl mit verbesserten abschreckeigenschaften und verbesserter lochfrasskorrosionsbeständigkeit
NO20010281L (no) Martensitisk rustfritt stål for sömlöse stålrör
BR112020004808A2 (pt) tubo sem costura de aço inoxidável martensítico para produtos tubulares para regiões petrolíferas, e método para sua fabricação
BRPI0418480A (pt) tubo de aço inoxidável martensìtico
ATE453733T1 (de) Werkstück aus einer hochfesten stahllegierung und dessen verwendung
Kangas et al. Use of advanced austenitic and duplex stainless steels for applications in oil & gas and process industry
BRPI0609856A2 (pt) tubo de aço inoxidável tendo excelente capacidade de dilatação para produtos tubulares para campos petrolìferos
US4099992A (en) Tubular products and methods of making the same
Tavares et al. Investigation of the effect of low temperature aging on the mechanical properties and susceptibility to sulfide stress corrosion cracking of 22% Cr duplex stainless steel
US4570708A (en) Method of using pipes resistant to hydrosulphuric acid
Gonzalez-Rodriguez et al. Effect of heat treatment on the stress corrosion cracking behaviour of 403 stainless steel in NaCl at 95 C
Mannan et al. A new high strength corrosion resistant alloy for oil and gas applications

Legal Events

Date Code Title Description
B07A Technical examination (opinion): publication of technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: INDEFIRO O PEDIDO DE ACORDO COM O(S) ARTIGO(S) 8O E 13 DA LPI

B25A Requested transfer of rights approved

Owner name: NIPPON STEEL CORPORATION (JP)

B25D Requested change of name of applicant approved

Owner name: NIPPON STEEL AND SUMITOMO METAL CORPORATION (JP)

B12B Appeal: appeal against refusal
B16A Patent or certificate of addition of invention granted

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 14/06/2016, OBSERVADAS AS CONDICOES LEGAIS.

B25D Requested change of name of applicant approved
B25K Entry of change of name and/or headquarter and transfer of application, patent and certificate of addition of invention: republication

Free format text: RETIFICADO O DESPACHO 25.4 PUBLICADO NA RPI 2543 DE 01/10/2019. ONDE SE LE: ?(?), SENDO ESTA PUBLICADA NA RPI NO 2542, DE 24/09/2019? LEIA-SE: ?(?), SENDO ESTA PUBLICADA NA RPI NO 2543, DE 01/10/2019?