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"Hot Rolled Steel Sheet Having Excellent Punching Workability And Fatigue Properties, Hot Dip Galvanized Steel Sheet, And Method For Producing The Same"
Abstract: This hot-rolled steel plate includes, in terms of mass %, C: 0.025 to 0.15 %, Si: 0.01 to 1.0 %, Mn: 1.0 to 2.5 %, P: 0.02 % or less, S: 0.005 % or less, Al: 0.5 % or less, Ti: 0.04 to 0.10 %, and N: 0.007 % or less, with a remainder being Fe and unavoidable impurities, wherein a Mn/Ti ratio is 15 or more, Nb is not added, a volume rate of ferrite is 30% or more, and a remainder includes one or both of perlite and bainite, an average aspect ratio of an equivalent ellipse of a crystal grain is 5 or less, an average distribution density of Ti-based carbides having a grain size of 20 nm or larger on the ferrite grain boundary is 10 counts/urn or less, a ratio of brittle fracture surface in a fractured region after punching is less than 20%, and a maximum tensile strength is 590 MPa or more.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
13 July 2011
Publication Number
39/2012
Publication Type
INA
Invention Field
METALLURGY
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
2018-02-27
Renewal Date
Applicants
NIPPON STEEL CORPORATION
6-1, MARUNOUCHI 2-CHOME, CHIYODA-KU, TOKYO 100-8071, JAPNAN
Inventors
1. NAOKI MARUYAMA
C/O NIPPON STEEL CORPORATION, 6-1, MARUNOUCHI 2-CHOME, CHIYODA-KU, TOKYO 100-8071, JAPAN
2. NAOKI YOSHINAGA
C/O NIPPON STEEL CORPORATION, 6-1, MARUNOUCHI 2-CHOME, CHIYODA-KU, TOKYO 100-8071, JAPAN
3. MASAFUMI AZUMA
C/O NIPPON STEEL CORPORATION, 6-1, MARUNOUCHI 2-CHOME, CHIYODA-KU, TOKYO 100-8071, JAPAN
4. YASUHARU SAKUMA
C/O NIPPON STEEL CORPORATION, 6-1, MARUNOUCHI 2-CHOME, CHIYODA-KU, TOKYO 100-8071, JAPAN
5. ATSUSHI ITAMI
C/O NIPPON STEEL CORPORATION, 6-1, MARUNOUCHI 2-CHOME, CHIYODA-KU, TOKYO 100-8071, JAPAN
Specification
NA
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 5373-delnp-2011-Form-3-(22-12-2011).pdf | 2011-12-22 |
| 1 | 5373-DELNP-2011-RELEVANT DOCUMENTS [30-08-2023(online)].pdf | 2023-08-30 |
| 2 | 5373-DELNP-2011-RELEVANT DOCUMENTS [24-09-2022(online)].pdf | 2022-09-24 |
| 2 | 5373-delnp-2011-Correspondence Others-(22-12-2011).pdf | 2011-12-22 |
| 3 | 5373-DELNP-2011-RELEVANT DOCUMENTS [26-07-2021(online)].pdf | 2021-07-26 |
| 3 | 5373-delnp-2011-Form-13-(10-01-2012).pdf | 2012-01-10 |
| 4 | 5373-DELNP-2011-RELEVANT DOCUMENTS [20-02-2020(online)].pdf | 2020-02-20 |
| 4 | 5373-delnp-2011-Correspondence Others-(10-01-2012).pdf | 2012-01-10 |
| 5 | 5373-delnp-2011-GPA.pdf | 2012-03-03 |
| 5 | 293478-Correspondence-180719.pdf | 2019-07-24 |
| 6 | 5373-delnp-2011-Form-5.pdf | 2012-03-03 |
| 6 | 293478-OTHERS-180719.pdf | 2019-07-24 |
| 7 | 5373-delnp-2011-Form-3.pdf | 2012-03-03 |
| 7 | 293478-Power of Attorney-180719.pdf | 2019-07-24 |
| 8 | 5373-DELNP-2011-PROOF OF ALTERATION [15-07-2019(online)].pdf | 2019-07-15 |
| 8 | 5373-delnp-2011-Form-2.pdf | 2012-03-03 |
| 9 | 5373-DELNP-2011-RELEVANT DOCUMENTS [21-02-2019(online)].pdf | 2019-02-21 |
| 9 | 5373-delnp-2011-Form-18.pdf | 2012-03-03 |
| 10 | 5373-delnp-2011-Form-1.pdf | 2012-03-03 |
| 10 | 5373-DELNP-2011-IntimationOfGrant27-02-2018.pdf | 2018-02-27 |
| 11 | 5373-delnp-2011-Drawings.pdf | 2012-03-03 |
| 11 | 5373-DELNP-2011-PatentCertificate27-02-2018.pdf | 2018-02-27 |
| 12 | 5373-DELNP-2011-Correspondence-270317.pdf | 2017-03-29 |
| 12 | 5373-delnp-2011-Description (Complete).pdf | 2012-03-03 |
| 13 | 5373-delnp-2011-Correspondence-others.pdf | 2012-03-03 |
| 13 | 5373-DELNP-2011-OTHERS-270317.pdf | 2017-03-29 |
| 14 | 5373-delnp-2011-Claims.pdf | 2012-03-03 |
| 14 | 5373-DELNP-2011-Power of Attorney-270317.pdf | 2017-03-29 |
| 15 | 5373-delnp-2011-Abstract.pdf | 2012-03-03 |
| 15 | Abstract [24-03-2017(online)].pdf | 2017-03-24 |
| 16 | 5373-delnp-2011-GPA-(03-07-2013).pdf | 2013-07-03 |
| 16 | Claims [24-03-2017(online)].pdf | 2017-03-24 |
| 17 | 5373-delnp-2011-Form-2-(03-07-2013).pdf | 2013-07-03 |
| 17 | Correspondence [24-03-2017(online)].pdf | 2017-03-24 |
| 18 | 5373-delnp-2011-Form-1-(03-07-2013).pdf | 2013-07-03 |
| 18 | Description(Complete) [24-03-2017(online)].pdf | 2017-03-24 |
| 19 | Description(Complete) [24-03-2017(online)].pdf_1036.pdf | 2017-03-24 |
| 19 | 5373-delnp-2011-Correspondence Others-(03-07-2013).pdf | 2013-07-03 |
| 20 | 5373-DELNP-2011-FER.pdf | 2016-10-07 |
| 20 | Drawing [24-03-2017(online)].pdf | 2017-03-24 |
| 21 | Examination Report Reply Recieved [24-03-2017(online)].pdf | 2017-03-24 |
| 21 | Petition Under Rule 137 [23-03-2017(online)].pdf | 2017-03-23 |
| 22 | Form 3 [23-03-2017(online)].pdf | 2017-03-23 |
| 22 | Other Document [24-03-2017(online)].pdf | 2017-03-24 |
| 23 | Form 3 [23-03-2017(online)].pdf | 2017-03-23 |
| 23 | Other Document [24-03-2017(online)].pdf | 2017-03-24 |
| 24 | Examination Report Reply Recieved [24-03-2017(online)].pdf | 2017-03-24 |
| 24 | Petition Under Rule 137 [23-03-2017(online)].pdf | 2017-03-23 |
| 25 | Drawing [24-03-2017(online)].pdf | 2017-03-24 |
| 25 | 5373-DELNP-2011-FER.pdf | 2016-10-07 |
| 26 | 5373-delnp-2011-Correspondence Others-(03-07-2013).pdf | 2013-07-03 |
| 26 | Description(Complete) [24-03-2017(online)].pdf_1036.pdf | 2017-03-24 |
| 27 | 5373-delnp-2011-Form-1-(03-07-2013).pdf | 2013-07-03 |
| 27 | Description(Complete) [24-03-2017(online)].pdf | 2017-03-24 |
| 28 | 5373-delnp-2011-Form-2-(03-07-2013).pdf | 2013-07-03 |
| 28 | Correspondence [24-03-2017(online)].pdf | 2017-03-24 |
| 29 | 5373-delnp-2011-GPA-(03-07-2013).pdf | 2013-07-03 |
| 29 | Claims [24-03-2017(online)].pdf | 2017-03-24 |
| 30 | 5373-delnp-2011-Abstract.pdf | 2012-03-03 |
| 30 | Abstract [24-03-2017(online)].pdf | 2017-03-24 |
| 31 | 5373-delnp-2011-Claims.pdf | 2012-03-03 |
| 31 | 5373-DELNP-2011-Power of Attorney-270317.pdf | 2017-03-29 |
| 32 | 5373-delnp-2011-Correspondence-others.pdf | 2012-03-03 |
| 32 | 5373-DELNP-2011-OTHERS-270317.pdf | 2017-03-29 |
| 33 | 5373-DELNP-2011-Correspondence-270317.pdf | 2017-03-29 |
| 33 | 5373-delnp-2011-Description (Complete).pdf | 2012-03-03 |
| 34 | 5373-delnp-2011-Drawings.pdf | 2012-03-03 |
| 34 | 5373-DELNP-2011-PatentCertificate27-02-2018.pdf | 2018-02-27 |
| 35 | 5373-delnp-2011-Form-1.pdf | 2012-03-03 |
| 35 | 5373-DELNP-2011-IntimationOfGrant27-02-2018.pdf | 2018-02-27 |
| 36 | 5373-delnp-2011-Form-18.pdf | 2012-03-03 |
| 36 | 5373-DELNP-2011-RELEVANT DOCUMENTS [21-02-2019(online)].pdf | 2019-02-21 |
| 37 | 5373-DELNP-2011-PROOF OF ALTERATION [15-07-2019(online)].pdf | 2019-07-15 |
| 37 | 5373-delnp-2011-Form-2.pdf | 2012-03-03 |
| 38 | 5373-delnp-2011-Form-3.pdf | 2012-03-03 |
| 38 | 293478-Power of Attorney-180719.pdf | 2019-07-24 |
| 39 | 5373-delnp-2011-Form-5.pdf | 2012-03-03 |
| 39 | 293478-OTHERS-180719.pdf | 2019-07-24 |
| 40 | 5373-delnp-2011-GPA.pdf | 2012-03-03 |
| 40 | 293478-Correspondence-180719.pdf | 2019-07-24 |
| 41 | 5373-DELNP-2011-RELEVANT DOCUMENTS [20-02-2020(online)].pdf | 2020-02-20 |
| 41 | 5373-delnp-2011-Correspondence Others-(10-01-2012).pdf | 2012-01-10 |
| 42 | 5373-DELNP-2011-RELEVANT DOCUMENTS [26-07-2021(online)].pdf | 2021-07-26 |
| 42 | 5373-delnp-2011-Form-13-(10-01-2012).pdf | 2012-01-10 |
| 43 | 5373-delnp-2011-Correspondence Others-(22-12-2011).pdf | 2011-12-22 |
| 43 | 5373-DELNP-2011-RELEVANT DOCUMENTS [24-09-2022(online)].pdf | 2022-09-24 |
| 44 | 5373-delnp-2011-Form-3-(22-12-2011).pdf | 2011-12-22 |
| 44 | 5373-DELNP-2011-RELEVANT DOCUMENTS [30-08-2023(online)].pdf | 2023-08-30 |
Search Strategy
| 1 | searchstrategy_23-09-2016.pdf |