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"Pearlite Based High Carbon Steel Rail Having Excellent Ductility And Process For Production Thereof"
Abstract: This high-carbon pearlitic steel rail having excellent ductility, includes: in terms of percent by mass, C: more than 0.85% to 1.40%; Si: 0.10% to 2.00%; Mn: 0.10% to 2.00%; Ti: 0.001% to 0.01%; V: 0.005% to 0.20%; and N: less than 0.0040%, with the balance being Fe and inevitable impurities, wherein contents of Ti and V fulfill the following formula (1), and a rail head portion has a pearlite structure. 5 < [V (% by mass)] / [Ti (% by mass)] < 20 • ••• Formula (1)
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
14 November 2011
Publication Number
02/2013
Publication Type
INA
Invention Field
METALLURGY
Status
Email
remfry-sagar@remfry.com
Parent Application
Patent Number
Legal Status
Grant Date
2017-04-24
Renewal Date
Applicants
NIPPON STEEL CORPORATION
6-1, MARUNOUCHI 2-CHOME, CHIYODA-KU, TOKYO 100-8071, JAPAN
Inventors
1. TERUHISA MIYAZAKI
C/O NIPPON STEEL CORPORATION, 6-1, MARUNOUCHI 2-CHOME, CHIYODA-KU, TOKYO 100-8071, JAPAN
2. MASAHARU UEDA
C/O NIPPON STEEL CORPORATION, 6-1, MARUNOUCHI 2-CHOME, CHIYODA-KU, TOKYO 100-8071, JAPAN
3. SUGURU YOSHIDA
C/O NIPPON STEEL CORPORATION, 6-1, MARUNOUCHI 2-CHOME, CHIYODA-KU, TOKYO 100-8071, JAPAN
Specification
NA
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 8826-delnp-2011-Form-3-(09-05-2012).pdf | 2012-05-09 |
| 1 | 8826-DELNP-2011-RELEVANT DOCUMENTS [24-09-2022(online)].pdf | 2022-09-24 |
| 2 | 8826-delnp-2011-Correspondence Others-(09-05-2012).pdf | 2012-05-09 |
| 2 | 8826-DELNP-2011-RELEVANT DOCUMENTS [26-07-2021(online)].pdf | 2021-07-26 |
| 3 | 8826-DELNP-2011-RELEVANT DOCUMENTS [21-02-2020(online)].pdf | 2020-02-21 |
| 3 | 8826-delnp-2011-GPA.pdf | 2012-05-15 |
| 4 | 8826-delnp-2011-Form-5.pdf | 2012-05-15 |
| 4 | 282708-Correspondence-180719.pdf | 2019-07-24 |
| 5 | 8826-delnp-2011-Form-3.pdf | 2012-05-15 |
| 5 | 282708-OTHERS-180719.pdf | 2019-07-24 |
| 6 | 8826-delnp-2011-Form-2.pdf | 2012-05-15 |
| 6 | 282708-Power of Attorney-180719.pdf | 2019-07-24 |
| 7 | 8826-DELNP-2011-PROOF OF ALTERATION [12-07-2019(online)].pdf | 2019-07-12 |
| 7 | 8826-delnp-2011-Form-18.pdf | 2012-05-15 |
| 8 | 8826-DELNP-2011-RELEVANT DOCUMENTS [22-02-2019(online)].pdf | 2019-02-22 |
| 8 | 8826-delnp-2011-Form-1.pdf | 2012-05-15 |
| 9 | 282708-8826-DELNP-2011.pdf | 2018-12-10 |
| 9 | 8826-delnp-2011-Drawings.pdf | 2012-05-15 |
| 10 | 8826-delnp-2011-Description (Complete).pdf | 2012-05-15 |
| 10 | 8826-DELNP-2011-RELEVANT DOCUMENTS [17-02-2018(online)].pdf | 2018-02-17 |
| 11 | 8826-delnp-2011-Correspondence Others.pdf | 2012-05-15 |
| 11 | Other Patent Document [08-05-2017(online)].pdf | 2017-05-08 |
| 12 | 8826-delnp-2011-Claims.pdf | 2012-05-15 |
| 12 | 8826-DELNP-2011-PatentCertificateCoverLetter.pdf | 2017-04-28 |
| 13 | 8826-delnp-2011-Abstract.pdf | 2012-05-15 |
| 13 | 8826-DELNP-2011-Correspondence-080317.pdf | 2017-03-14 |
| 14 | 8826-DELNP-2011-GPA-(02-07-2013).pdf | 2013-07-02 |
| 14 | 8826-DELNP-2011-OTHERS-080317.pdf | 2017-03-14 |
| 15 | 8826-DELNP-2011-Form-2-(02-07-2013).pdf | 2013-07-02 |
| 15 | Abstract [07-03-2017(online)].pdf | 2017-03-07 |
| 16 | 8826-DELNP-2011-Form-1-(02-07-2013).pdf | 2013-07-02 |
| 16 | Claims [07-03-2017(online)].pdf | 2017-03-07 |
| 17 | Correspondence [07-03-2017(online)].pdf | 2017-03-07 |
| 17 | 8826-DELNP-2011-Correspondence-Others-(02-07-2013).pdf | 2013-07-02 |
| 18 | 8826-DELNP-2011-FER.pdf | 2016-11-08 |
| 18 | Description(Complete) [07-03-2017(online)].pdf | 2017-03-07 |
| 19 | Description(Complete) [07-03-2017(online)].pdf_292.pdf | 2017-03-07 |
| 19 | Petition Under Rule 137 [07-03-2017(online)].pdf | 2017-03-07 |
| 20 | Description(Complete) [07-03-2017(online)].pdf_303.pdf | 2017-03-07 |
| 20 | Other Document [07-03-2017(online)].pdf_307.pdf | 2017-03-07 |
| 21 | Description(Complete) [07-03-2017(online)].pdf_304.pdf | 2017-03-07 |
| 21 | Other Document [07-03-2017(online)].pdf_305.pdf | 2017-03-07 |
| 22 | Examination Report Reply Recieved [07-03-2017(online)].pdf | 2017-03-07 |
| 22 | Other Document [07-03-2017(online)].pdf | 2017-03-07 |
| 23 | Form 13 [07-03-2017(online)].pdf | 2017-03-07 |
| 23 | Marked Copy [07-03-2017(online)].pdf | 2017-03-07 |
| 24 | Marked Copy [07-03-2017(online)].pdf | 2017-03-07 |
| 24 | Form 13 [07-03-2017(online)].pdf | 2017-03-07 |
| 25 | Examination Report Reply Recieved [07-03-2017(online)].pdf | 2017-03-07 |
| 25 | Other Document [07-03-2017(online)].pdf | 2017-03-07 |
| 26 | Description(Complete) [07-03-2017(online)].pdf_304.pdf | 2017-03-07 |
| 26 | Other Document [07-03-2017(online)].pdf_305.pdf | 2017-03-07 |
| 27 | Description(Complete) [07-03-2017(online)].pdf_303.pdf | 2017-03-07 |
| 27 | Other Document [07-03-2017(online)].pdf_307.pdf | 2017-03-07 |
| 28 | Description(Complete) [07-03-2017(online)].pdf_292.pdf | 2017-03-07 |
| 28 | Petition Under Rule 137 [07-03-2017(online)].pdf | 2017-03-07 |
| 29 | 8826-DELNP-2011-FER.pdf | 2016-11-08 |
| 29 | Description(Complete) [07-03-2017(online)].pdf | 2017-03-07 |
| 30 | 8826-DELNP-2011-Correspondence-Others-(02-07-2013).pdf | 2013-07-02 |
| 30 | Correspondence [07-03-2017(online)].pdf | 2017-03-07 |
| 31 | 8826-DELNP-2011-Form-1-(02-07-2013).pdf | 2013-07-02 |
| 31 | Claims [07-03-2017(online)].pdf | 2017-03-07 |
| 32 | 8826-DELNP-2011-Form-2-(02-07-2013).pdf | 2013-07-02 |
| 32 | Abstract [07-03-2017(online)].pdf | 2017-03-07 |
| 33 | 8826-DELNP-2011-GPA-(02-07-2013).pdf | 2013-07-02 |
| 33 | 8826-DELNP-2011-OTHERS-080317.pdf | 2017-03-14 |
| 34 | 8826-delnp-2011-Abstract.pdf | 2012-05-15 |
| 34 | 8826-DELNP-2011-Correspondence-080317.pdf | 2017-03-14 |
| 35 | 8826-delnp-2011-Claims.pdf | 2012-05-15 |
| 35 | 8826-DELNP-2011-PatentCertificateCoverLetter.pdf | 2017-04-28 |
| 36 | Other Patent Document [08-05-2017(online)].pdf | 2017-05-08 |
| 36 | 8826-delnp-2011-Correspondence Others.pdf | 2012-05-15 |
| 37 | 8826-delnp-2011-Description (Complete).pdf | 2012-05-15 |
| 37 | 8826-DELNP-2011-RELEVANT DOCUMENTS [17-02-2018(online)].pdf | 2018-02-17 |
| 38 | 282708-8826-DELNP-2011.pdf | 2018-12-10 |
| 38 | 8826-delnp-2011-Drawings.pdf | 2012-05-15 |
| 39 | 8826-delnp-2011-Form-1.pdf | 2012-05-15 |
| 39 | 8826-DELNP-2011-RELEVANT DOCUMENTS [22-02-2019(online)].pdf | 2019-02-22 |
| 40 | 8826-delnp-2011-Form-18.pdf | 2012-05-15 |
| 40 | 8826-DELNP-2011-PROOF OF ALTERATION [12-07-2019(online)].pdf | 2019-07-12 |
| 41 | 282708-Power of Attorney-180719.pdf | 2019-07-24 |
| 41 | 8826-delnp-2011-Form-2.pdf | 2012-05-15 |
| 42 | 8826-delnp-2011-Form-3.pdf | 2012-05-15 |
| 42 | 282708-OTHERS-180719.pdf | 2019-07-24 |
| 43 | 8826-delnp-2011-Form-5.pdf | 2012-05-15 |
| 43 | 282708-Correspondence-180719.pdf | 2019-07-24 |
| 44 | 8826-DELNP-2011-RELEVANT DOCUMENTS [21-02-2020(online)].pdf | 2020-02-21 |
| 44 | 8826-delnp-2011-GPA.pdf | 2012-05-15 |
| 45 | 8826-DELNP-2011-RELEVANT DOCUMENTS [26-07-2021(online)].pdf | 2021-07-26 |
| 45 | 8826-delnp-2011-Correspondence Others-(09-05-2012).pdf | 2012-05-09 |
| 46 | 8826-DELNP-2011-RELEVANT DOCUMENTS [24-09-2022(online)].pdf | 2022-09-24 |
| 46 | 8826-delnp-2011-Form-3-(09-05-2012).pdf | 2012-05-09 |
Search Strategy
| 1 | Search8826DELNP2006_02-11-2016.pdf |
| 1 | Search8826DELNP2006_07-11-2016.pdf |
| 2 | Search8826DELNP2006_02-11-2016.pdf |
| 2 | Search8826DELNP2006_07-11-2016.pdf |