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A Submerged Entry Nozzle (Sen) For Supplying Liquid Steel From Tundish To Mould

The invention relates to an improved submerged entry nozzle (1) for supplying liquid steel (4) from a tundish to a mould. The bottom portion (5) of the submerged entry nozzle (1) is provided with curved surfaces (3) for reducing the turbulence caused at part (2) during change of direction of fluid flow. The curved surfaces (3) are parabolic or near parabolic in shape.

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Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
13 October 2003
Publication Number
44/2005
Publication Type
Invention Field
MECHANICAL ENGINEERING
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
2008-04-30
Renewal Date

Applicants

TATA STEEL LIMITED
R & D SCIENTIFIC SERVICES DIVISION, JAMSHEDPUR-831 001

Inventors

1. R. SAMBASIVAN
C/O TATA STEEL LIMITED, R & D SCIENTIFIC SERVICES DIVISION, JAMSHEDPUR 831 001

Specification

Documents

Application Documents

# Name Date
1 531-KOL-2003-LETTER OF PATENT CERTIFICATE-[30-04-2008].pdf 2008-04-30
2 531-KOL-2003-FER-[30-04-2008].pdf 2008-04-30
3 531-kol-2003-531-kol-2003-granted-specification.pdf 2011-10-06
4 531-kol-2003-531-kol-2003-granted-reply to examination report.pdf 2011-10-06
5 531-kol-2003-531-kol-2003-granted-letter patent.pdf 2011-10-06
6 531-kol-2003-531-kol-2003-granted-form 5.pdf 2011-10-06
7 531-kol-2003-531-kol-2003-granted-form 3.pdf 2011-10-06
8 531-kol-2003-531-kol-2003-granted-form 26.pdf 2011-10-06
9 531-kol-2003-531-kol-2003-granted-form 2.pdf 2011-10-06
10 531-kol-2003-531-kol-2003-granted-form 18.pdf 2011-10-06
11 531-kol-2003-531-kol-2003-granted-form 13.pdf 2011-10-06
12 531-kol-2003-531-kol-2003-granted-form 1.pdf 2011-10-06
13 531-kol-2003-531-kol-2003-granted-examination report.pdf 2011-10-06
14 531-kol-2003-531-kol-2003-granted-drawings.pdf 2011-10-06
15 531-kol-2003-531-kol-2003-granted-description (complete).pdf 2011-10-06
16 531-kol-2003-531-kol-2003-granted-correspondence.pdf 2011-10-06
17 531-kol-2003-531-kol-2003-granted-claims.pdf 2011-10-06
18 531-kol-2003-531-kol-2003-granted-abstract.pdf 2011-10-06
19 531-KOL-2003-FORM-27.pdf 2013-04-15
20 531-kol-2003-21-01-2023-relevent documents.pdf 2023-01-21

ERegister / Renewals

3rd: 30 Jul 2008

From 13/10/2005 - To 13/10/2006

4th: 30 Jul 2008

From 13/10/2006 - To 13/10/2007

5th: 30 Jul 2008

From 13/10/2007 - To 13/10/2008

6th: 30 Jul 2008

From 13/10/2008 - To 13/10/2009

7th: 14 Dec 2009

From 13/10/2009 - To 13/10/2010

8th: 13 Sep 2010

From 13/10/2010 - To 13/10/2011

9th: 01 Jul 2011

From 13/10/2011 - To 13/10/2012

10th: 20 Mar 2012

From 13/10/2012 - To 13/10/2013

11th: 16 Aug 2013

From 13/10/2013 - To 13/10/2014

12th: 04 Sep 2014

From 13/10/2014 - To 13/10/2015

13th: 03 Sep 2015

From 13/10/2015 - To 13/10/2016

14th: 23 Sep 2016

From 13/10/2016 - To 13/10/2017

15th: 11 Sep 2017

From 13/10/2017 - To 13/10/2018

16th: 19 Sep 2018

From 13/10/2018 - To 13/10/2019

17th: 25 Sep 2019

From 13/10/2019 - To 13/10/2020