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"Pearlite Rail"
Abstract: A pearlite rail contains, by mass%, 0.65 to 1.20% of C; 0.05 to 2.00% of Si; 0.05 to 2.00% of Mn; and the balance composed of Fe and inevitable impurities, wherein at least part of the head portion and at least part of the bottom portion has a pearlite structure, and the surface hardness of a portion of the pearlite structure is in a range of Hv320 to Hv500 and a maximum surface roughness of a portion of the pearlite structure is less than or equal to 180 µm.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
30 May 2011
Publication Number
14/2012
Publication Type
INA
Invention Field
METALLURGY
Status
Email
remfry-sagar@remfry.com
Parent Application
Applicants
NIPPON STEEL CORPORATION
6-1, MARUNOUCHI 2-CHOME, CHIYODA-KU, TOKYO 100-8071, JAPAN
Inventors
1. MASAHARU UEDA
C/O NIPPON STEEL CORPORATION, 6-1, MARUNOUCHI 2-CHOME, CHIYODA-KU, TOKYO 100-8071, JAPAN
2. KYOHEI SONOYAMA
C/O NIPPON STEEL CORPORATION, 6-1, MARUNOUCHI 2-CHOME, CHIYODA-KU, TOKYO 100-8071, JAPAN
3. TAKUYA TANAHASHI
C/O NIPPON STEEL CORPORATION, 6-1, MARUNOUCHI 2-CHOME, CHIYODA-KU, TOKYO 100-8071, JAPAN
4. TERUHISA MIYAZAKI
C/O NIPPON STEEL CORPORATION, 6-1, MARUNOUCHI 2-CHOME, CHIYODA-KU, TOKYO 100-8071, JAPAN
5. KATSUYA IWANO
C/O NIPPON STEEL CORPORATION, 6-1, MARUNOUCHI 2-CHOME, CHIYODA-KU, TOKYO 100-8071, JAPAN
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 4026-delnp-2011-Correspondence-Others-(22-11-2011).pdf | 2011-11-22 |
| 2 | 4026-delnp-2011-Form-3 (28-11-2011).pdf | 2011-11-28 |
| 3 | 4026-delnp-2011-Correspondence others-(28-11-2011).pdf | 2011-11-28 |
| 4 | 4026-delnp-2011-Form-3-(19-01-2012).pdf | 2012-01-19 |
| 5 | 4026-delnp-2011-Correspondence Others-(19-01-2012).pdf | 2012-01-19 |
| 6 | 4026-delnp-2011-GPA.pdf | 2012-02-08 |
| 7 | 4026-delnp-2011-Form-5.pdf | 2012-02-08 |
| 8 | 4026-delnp-2011-Form-3.pdf | 2012-02-08 |
| 9 | 4026-delnp-2011-Form-2.pdf | 2012-02-08 |
| 10 | 4026-delnp-2011-Form-18.pdf | 2012-02-08 |
| 11 | 4026-delnp-2011-Form-1.pdf | 2012-02-08 |
| 12 | 4026-delnp-2011-Drawings.pdf | 2012-02-08 |
| 13 | 4026-delnp-2011-Description (Complete).pdf | 2012-02-08 |
| 14 | 4026-delnp-2011-Correspondence-others.pdf | 2012-02-08 |
| 15 | 4026-delnp-2011-Claims.pdf | 2012-02-08 |
| 16 | 4026-delnp-2011-Abstract.pdf | 2012-02-08 |
| 17 | 4026-delnp-2011-GPA-(03-07-2013).pdf | 2013-07-03 |
| 18 | 4026-delnp-2011-Form-2-(03-07-2013).pdf | 2013-07-03 |
| 19 | 4026-delnp-2011-Form-1-(03-07-2013).pdf | 2013-07-03 |
| 20 | 4026-delnp-2011-Correspondence Others-(03-07-2013).pdf | 2013-07-03 |
| 21 | 4026-DELNP-2011-FER.pdf | 2016-12-21 |
| 22 | Petition Under Rule 137 [25-05-2017(online)].pdf | 2017-05-25 |
| 23 | Other Document [25-05-2017(online)].pdf | 2017-05-25 |
| 24 | Examination Report Reply Recieved [25-05-2017(online)].pdf | 2017-05-25 |
| 25 | Description(Complete) [25-05-2017(online)].pdf_149.pdf | 2017-05-25 |
| 26 | Description(Complete) [25-05-2017(online)].pdf | 2017-05-25 |
| 27 | Correspondence [25-05-2017(online)].pdf | 2017-05-25 |
| 28 | Claims [25-05-2017(online)].pdf | 2017-05-25 |
| 29 | 4026-DELNP-2011-Power of Attorney-260517.pdf | 2017-06-01 |
| 30 | 4026-DELNP-2011-Correspondence-260517.pdf | 2017-06-01 |
| 31 | PROOF OF RIGHT [14-06-2017(online)].pdf | 2017-06-14 |
| 32 | Petition Under Rule 137 [14-06-2017(online)].pdf | 2017-06-14 |
| 33 | 4026-DELNP-2011-OTHERS-150617.pdf | 2017-06-19 |
| 34 | 4026-DELNP-2011-Correspondence-150617.pdf | 2017-06-19 |
| 35 | 4026-DELNP-2011-RELEVANT DOCUMENTS [17-06-2019(online)].pdf | 2019-06-17 |
| 36 | 4026-DELNP-2011-FORM 13 [17-06-2019(online)].pdf | 2019-06-17 |
| 37 | 4026-DELNP-2011-Power of Attorney-180619.pdf | 2019-06-28 |
| 38 | 4026-DELNP-2011-OTHERS-180619.pdf | 2019-06-28 |
| 39 | 4026-DELNP-2011-Correspondence-180619.pdf | 2019-06-28 |
| 40 | 4026-DELNP-2011-US(14)-HearingNotice-(HearingDate-05-01-2022).pdf | 2021-12-01 |
| 41 | 4026-DELNP-2011-REQUEST FOR ADJOURNMENT OF HEARING UNDER RULE 129A [22-12-2021(online)].pdf | 2021-12-22 |
| 42 | 4026-DELNP-2011-US(14)-ExtendedHearingNotice-(HearingDate-25-01-2022).pdf | 2022-01-05 |
| 43 | 4026-DELNP-2011-FORM-26 [24-01-2022(online)].pdf | 2022-01-24 |
| 44 | 4026-DELNP-2011-Correspondence to notify the Controller [24-01-2022(online)].pdf | 2022-01-24 |
| 45 | 4026-DELNP-2011-Written submissions and relevant documents [09-02-2022(online)].pdf | 2022-02-09 |
| 46 | 4026-DELNP-2011-LETTER TO DAE- (24-02-2022).pdf | 2022-02-24 |