EP3279356A4 - Age-hardening steel and method of manufacturing parts using age-hardening steel - Google Patents

Age-hardening steel and method of manufacturing parts using age-hardening steel Download PDF

Info

Publication number
EP3279356A4
EP3279356A4 EP16772353.5A EP16772353A EP3279356A4 EP 3279356 A4 EP3279356 A4 EP 3279356A4 EP 16772353 A EP16772353 A EP 16772353A EP 3279356 A4 EP3279356 A4 EP 3279356A4
Authority
EP
European Patent Office
Prior art keywords
age
hardening steel
manufacturing parts
hardening
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.)
Withdrawn
Application number
EP16772353.5A
Other languages
German (de)
French (fr)
Other versions
EP3279356A1 (en
Inventor
Yutaka Neishi
Masato Yuya
Tatsuya Hasegawa
Motoki Takasuga
Masashi Higashida
Hitoshi Matsumoto
Taizo Makino
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel and Sumitomo Metal Corp
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 Nippon Steel and Sumitomo Metal Corp filed Critical Nippon Steel and Sumitomo Metal Corp
Publication of EP3279356A1 publication Critical patent/EP3279356A1/en
Publication of EP3279356A4 publication Critical patent/EP3279356A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • C21D9/52Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/525Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
    • 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/004Heat treatment of ferrous alloys containing Cr and Ni
    • 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/005Heat treatment of ferrous alloys containing Mn
    • 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/008Heat treatment of ferrous alloys containing Si
    • 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/02Hardening by precipitation
    • 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
    • C21D8/06Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • 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
    • C21D8/06Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • C21D8/065Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0068Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • 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
    • C22C38/005Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • 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
    • C22C38/06Ferrous 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
    • C22C38/26Ferrous 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
    • C22C38/38Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • 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
    • C22C38/58Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/60Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
    • 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/002Bainite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials 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)
EP16772353.5A 2015-03-31 2016-03-17 Age-hardening steel and method of manufacturing parts using age-hardening steel Withdrawn EP3279356A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015070839 2015-03-31
PCT/JP2016/058585 WO2016158470A1 (en) 2015-03-31 2016-03-17 Age-hardening steel and method of manufacturing parts using age-hardening steel

Publications (2)

Publication Number Publication Date
EP3279356A1 EP3279356A1 (en) 2018-02-07
EP3279356A4 true EP3279356A4 (en) 2018-10-03

Family

ID=57004246

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16772353.5A Withdrawn EP3279356A4 (en) 2015-03-31 2016-03-17 Age-hardening steel and method of manufacturing parts using age-hardening steel

Country Status (6)

Country Link
US (1) US20180044757A1 (en)
EP (1) EP3279356A4 (en)
JP (1) JP6536673B2 (en)
KR (1) KR101918432B1 (en)
CN (1) CN107250410B (en)
WO (1) WO2016158470A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11814709B2 (en) 2018-10-31 2023-11-14 Jfe Steel Corporation Steel for nitrocarburizing and nitrocarburized component, and methods of producing same
CN110257713A (en) * 2019-07-16 2019-09-20 内蒙古科技大学 A kind of low-carbon aged steel and preparation method thereof
KR20240007218A (en) 2021-06-16 2024-01-16 아르셀러미탈 How to manufacture steel parts and steel parts
CN116024495A (en) * 2022-12-21 2023-04-28 中国兵器科学研究院宁波分院 Martensitic precipitation hardening steel and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000017374A (en) * 1998-06-26 2000-01-18 Aichi Steel Works Ltd Age hardening type high strength bainitic steel and its production
FR2990218A1 (en) * 2012-05-07 2013-11-08 Daido Steel Co Ltd Hardened microalloyed bainitic steel useful for the production of e.g. automobile parts, comprises carbon, silicon, manganese, sulfur, copper, nickel, chromium, molybdenum, vanadium, iron and incidental impurities
JP2013245363A (en) * 2012-05-24 2013-12-09 Nippon Steel & Sumitomo Metal Corp Age-hardenable steel and method for manufacturing machine part

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5257460Y2 (en) * 1972-06-30 1977-12-27
JPS62263922A (en) * 1986-05-09 1987-11-16 Japan Casting & Forging Corp Production of forged steel
JP3440894B2 (en) * 1998-08-05 2003-08-25 Jfeスチール株式会社 High strength hot rolled steel sheet excellent in stretch flangeability and method for producing the same
JP4435953B2 (en) * 1999-12-24 2010-03-24 新日本製鐵株式会社 Bar wire for cold forging and its manufacturing method
JP4415219B2 (en) * 2004-07-28 2010-02-17 大同特殊鋼株式会社 Age hardened steel
JP5123335B2 (en) * 2010-01-28 2013-01-23 本田技研工業株式会社 Crankshaft and manufacturing method thereof
JP5343923B2 (en) 2010-05-18 2013-11-13 新日鐵住金株式会社 Method of manufacturing age-hardening steel and machine parts
JP5135561B2 (en) * 2010-11-17 2013-02-06 新日鐵住金株式会社 Nitriding steel and nitriding parts
JP5620336B2 (en) * 2011-05-26 2014-11-05 新日鐵住金株式会社 Steel parts for high fatigue strength and high toughness machine structure and manufacturing method thereof
KR101726251B1 (en) * 2012-07-26 2017-04-12 제이에프이 스틸 가부시키가이샤 Steel for nitrocarburizing and nitrocarburized component, and methods for producing said steel for nitrocarburizing and said nitrocarburized component
US10066281B2 (en) * 2013-10-02 2018-09-04 Nippon Steel & Sumitomo Metal Corporation Age-hardenable steel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000017374A (en) * 1998-06-26 2000-01-18 Aichi Steel Works Ltd Age hardening type high strength bainitic steel and its production
FR2990218A1 (en) * 2012-05-07 2013-11-08 Daido Steel Co Ltd Hardened microalloyed bainitic steel useful for the production of e.g. automobile parts, comprises carbon, silicon, manganese, sulfur, copper, nickel, chromium, molybdenum, vanadium, iron and incidental impurities
JP2013245363A (en) * 2012-05-24 2013-12-09 Nippon Steel & Sumitomo Metal Corp Age-hardenable steel and method for manufacturing machine part

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2016158470A1 *

Also Published As

Publication number Publication date
WO2016158470A1 (en) 2016-10-06
KR20170097743A (en) 2017-08-28
JP6536673B2 (en) 2019-07-03
EP3279356A1 (en) 2018-02-07
CN107250410A (en) 2017-10-13
JPWO2016158470A1 (en) 2017-12-21
KR101918432B1 (en) 2018-11-13
US20180044757A1 (en) 2018-02-15
CN107250410B (en) 2018-12-21

Similar Documents

Publication Publication Date Title
EP3212189A4 (en) Substituted chromanes and method of use
EP3333283A4 (en) Sliding member and manufacturing method therefor
GB201514756D0 (en) Compound and method of use
EP3377307A4 (en) Structural composition and method
EP3173499A4 (en) Alloy structure and method for manufacturing alloy structure
EP3330395A4 (en) Strain-induced-transformation composite-structure steel plate and method of manufacturing same
EP3213849A4 (en) Metal joint and manufacturing method for metal joint
EP3225715A4 (en) Titanium alloy member and method of manufacturing titanium alloy member
EP3045309A4 (en) Ductile metal laminate and method of manufacturing same
EP3344806A4 (en) Glycan arrays and method of use
EP3255321A4 (en) Gasket and manufacturing method thereof
EP3319682A4 (en) Valve assembly and methods of use
PL3093358T3 (en) Steel and method of manufacturing the same
EP3260702A4 (en) Pump unit and method of manufacturing same
EP3260440A4 (en) Metal soap and manufacturing method therefor
GB201522552D0 (en) Method of improving adhesion
EP3135790A4 (en) Method for manufacturing aluminum alloy member and aluminum alloy member using same
EP3374042A4 (en) Analysis of swimming technique
EP3297573A4 (en) Stent and method of use
EP3236533A4 (en) Module-terminal block connection structure and connection method
EP3202528A4 (en) Weld construction member and manufacturing method thereof
EP3279356A4 (en) Age-hardening steel and method of manufacturing parts using age-hardening steel
EP3263909A4 (en) Method of manufacturing turbocharger
EP3416536A4 (en) Winguide and method of using same
EP3369937A4 (en) Method of manufacturing impeller

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20171027

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20180831

RIC1 Information provided on ipc code assigned before grant

Ipc: C22C 38/48 20060101ALI20180824BHEP

Ipc: C22C 38/58 20060101ALI20180824BHEP

Ipc: C22C 38/44 20060101ALI20180824BHEP

Ipc: C21D 6/00 20060101ALI20180824BHEP

Ipc: C21D 6/02 20060101ALI20180824BHEP

Ipc: C22C 38/42 20060101ALI20180824BHEP

Ipc: C22C 38/06 20060101ALI20180824BHEP

Ipc: C22C 38/46 20060101ALI20180824BHEP

Ipc: C21D 8/06 20060101ALI20180824BHEP

Ipc: C22C 38/60 20060101ALI20180824BHEP

Ipc: C21D 9/00 20060101ALI20180824BHEP

Ipc: C21D 9/52 20060101ALI20180824BHEP

Ipc: C22C 38/00 20060101AFI20180824BHEP

Ipc: C22C 38/02 20060101ALI20180824BHEP

RIC1 Information provided on ipc code assigned before grant

Ipc: C22C 38/60 20060101ALI20190307BHEP

Ipc: C22C 38/48 20060101ALI20190307BHEP

Ipc: C21D 6/00 20060101ALI20190307BHEP

Ipc: C22C 38/44 20060101ALI20190307BHEP

Ipc: C21D 8/06 20060101ALI20190307BHEP

Ipc: C22C 38/06 20060101ALI20190307BHEP

Ipc: C22C 38/42 20060101ALI20190307BHEP

Ipc: C21D 9/00 20060101ALI20190307BHEP

Ipc: C21D 6/02 20060101ALI20190307BHEP

Ipc: C21D 9/52 20060101ALI20190307BHEP

Ipc: C22C 38/58 20060101ALI20190307BHEP

Ipc: C22C 38/02 20060101ALI20190307BHEP

Ipc: C22C 38/00 20060101AFI20190307BHEP

Ipc: C22C 38/46 20060101ALI20190307BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20190416

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NIPPON STEEL CORPORATION

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20190827