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CPC
C21C7/0685
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C
CHEMISTRY METALLURGY
C21
Iron metallurgy
C21C
PROCESSING OF PIG-IRON
C21C7/00
Treating molten ferrous alloys
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C21C7/0685
of stainless steel
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Patents Grants
last 30 patents
Information
Patent Grant
Ferritic stainless steel
Patent number
11,384,405
Issue date
Jul 12, 2022
OUTOKUMPU OYJ
Juha Kela
C21 - METALLURGY OF IRON
Information
Patent Grant
Grain refinement in iron-based materials
Patent number
10,465,258
Issue date
Nov 5, 2019
The Curators of the University of Missouri
Simon Lekakh
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for manufacturing duplex stainless steel sheet having reduce...
Patent number
9,869,002
Issue date
Jan 16, 2018
Posco
Sung Jin Park
C21 - METALLURGY OF IRON
Information
Patent Grant
Method and device for producing pig-iron based stainless steel with...
Patent number
8,765,051
Issue date
Jul 1, 2014
SMS Siemag Aktiengesellschaft
Johann Reichel
C21 - METALLURGY OF IRON
Information
Patent Grant
Method and device for producing pig-iron based stainless steel with...
Patent number
8,430,945
Issue date
Apr 30, 2013
SMS Siemag Aktiengesellschaft
Johann Reichel
C21 - METALLURGY OF IRON
Information
Patent Grant
Method and device for producing stainless steel without using a sup...
Patent number
8,425,831
Issue date
Apr 23, 2013
SMS Siemag Aktiengesellschaft
Johann Reichel
C21 - METALLURGY OF IRON
Information
Patent Grant
Method of manufacturing ultra low carbon ferritic stainless steel
Patent number
8,277,537
Issue date
Oct 2, 2012
POSCO
Joo Hyun Park
C21 - METALLURGY OF IRON
Information
Patent Grant
Method in connection with steel production
Patent number
8,246,716
Issue date
Aug 21, 2012
Outokumpu Oyj
Sven-Eric Lunner
C21 - METALLURGY OF IRON
Information
Patent Grant
Method and device for producing stainless steel without using a sup...
Patent number
8,048,196
Issue date
Nov 1, 2011
SMS Siemag Aktiengesellschaft
Johann Reichel
C21 - METALLURGY OF IRON
Information
Patent Grant
Method in connection with steel production
Patent number
7,744,674
Issue date
Jun 29, 2010
Outokumpu Oyj
Sven-Eric Lunner
C21 - METALLURGY OF IRON
Information
Patent Grant
Refining method and refining apparatus for chromium-contained molte...
Patent number
7,497,987
Issue date
Mar 3, 2009
Nippon Steel Corporation
Kosuke Yamashita
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for producing stainless steels, in particular high-grade ste...
Patent number
7,094,271
Issue date
Aug 22, 2006
SMS Demag AG
Karl Reiner Götzinger
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for decarbonization refining of chromium-containing molten s...
Patent number
6,830,606
Issue date
Dec 14, 2004
Nippon Steel Corporation
Ryuji Nakao
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for the treating stainless steel refining slag
Patent number
6,732,547
Issue date
May 11, 2004
JFE Steel Corporation
Hisahiro Matsunaga
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for recovering metallic chromium from slag containing chromi...
Patent number
6,679,931
Issue date
Jan 20, 2004
SMS Demag AG
Karl Götzinger
C21 - METALLURGY OF IRON
Information
Patent Grant
Method and apparatus for producing high chromium content steels and...
Patent number
6,544,471
Issue date
Apr 8, 2003
SMS Schloemann-Siemag Aktiengesellschaft
Wei-Ping Wu
C21 - METALLURGY OF IRON
Information
Patent Grant
VOD refining method for fast-cut stainless steel containing sulphur
Patent number
6,358,299
Issue date
Mar 19, 2002
Walsin Lihwa Corp.
Yu-Sheng Wei
C21 - METALLURGY OF IRON
Information
Patent Grant
Producing stainless steels in parallel operated vessels
Patent number
6,238,453
Issue date
May 29, 2001
Mannesmann AG
Lutz Rose
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for decarbonising a high-chromium steel melt
Patent number
6,093,235
Issue date
Jul 25, 2000
Mannesmann AG
Johann Reichel
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for producing alloyed steels
Patent number
6,077,324
Issue date
Jun 20, 2000
KCT Technologie GmbH
Ernst Fritz
C21 - METALLURGY OF IRON
Information
Patent Grant
Method and apparatus for producing high chromium content steels and...
Patent number
6,068,676
Issue date
May 30, 2000
SMS Schloeman-Siemag Aktiengesellschaft
Wei-Ping Wu
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for smelting a titanium steel and steel obtained
Patent number
5,972,129
Issue date
Oct 26, 1999
Creusot Loire Industrie
Jean Beguinot
C21 - METALLURGY OF IRON
Information
Patent Grant
Decarburization refining process for chromium-containing molten met...
Patent number
5,769,923
Issue date
Jun 23, 1998
Kawasaki Steel Corporation
Hiroshi Nishikawa
C21 - METALLURGY OF IRON
Information
Patent Grant
Method of decarburizing refining molten steel containing Cr
Patent number
5,743,938
Issue date
Apr 28, 1998
Kawasaki Steel Corporation
Hiroshi Nishikawa
C21 - METALLURGY OF IRON
Information
Patent Grant
Method of manufacturing stainless steel
Patent number
5,609,669
Issue date
Mar 11, 1997
Mikael Brunner
C21 - METALLURGY OF IRON
Information
Patent Grant
Process and unit for supplying a gas under pressure to an installat...
Patent number
5,566,556
Issue date
Oct 22, 1996
L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Ge...
Robert Ekins
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for producing low-carbon chromium-containing steel
Patent number
5,547,489
Issue date
Aug 20, 1996
Daido Tokushuko Kabushiki Kaisha
Yoshio Inagaki
C21 - METALLURGY OF IRON
Information
Patent Grant
Method and device for producing stainless steel
Patent number
5,514,331
Issue date
May 7, 1996
Outokumpu Steel Oy
Matti Honkaniemi
C21 - METALLURGY OF IRON
Information
Patent Grant
Process and unit for supplying a gas under pressure to an installat...
Patent number
5,505,052
Issue date
Apr 9, 1996
L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Ge...
Robert Ekins
C21 - METALLURGY OF IRON
Information
Patent Grant
Method of degassing and decarburizing stainless molten steel
Patent number
5,356,456
Issue date
Oct 18, 1994
Kawasaki Steel Corporation
Hiroshi Nishikawa
C21 - METALLURGY OF IRON
Patents Applications
last 30 patents
Information
Patent Application
PRECIPITATION HARDENING MARTENSITIC STAINLESS STEEL HAVING EXCELLEN...
Publication number
20240376561
Publication date
Nov 14, 2024
Nippon Yakin Kogyo Co., Ltd.
Xin JI
B22 - CASTING POWDER METALLURGY
Information
Patent Application
Method for Preparing Stainless Steel Seamless Tube with Ultra-High...
Publication number
20230304118
Publication date
Sep 28, 2023
Jiangsu Wujin Stainless Steel Pipe Group Co., Ltd.
Hong Gao
C21 - METALLURGY OF IRON
Information
Patent Application
ARGON OXYGEN DECARBURIZATION REFINING METHOD FOR MOLTEN AUSTENITIC...
Publication number
20170175212
Publication date
Jun 22, 2017
POSCO
Sung Jin PARK
C21 - METALLURGY OF IRON
Information
Patent Application
FERRITIC STAINLESS STEEL
Publication number
20160281184
Publication date
Sep 29, 2016
Outokumpu Oyj
Juha KELA
C21 - METALLURGY OF IRON
Information
Patent Application
METHOD AND DEVICE FOR PRODUCING PIG-IRON BASED STAINLESS STEEL WITH...
Publication number
20120175828
Publication date
Jul 12, 2012
SMS Siemag Aktiengesellschaft
Johann REICHEL
C21 - METALLURGY OF IRON
Information
Patent Application
METHOD AND DEVICE FOR PRODUCING STAINLESS STEEL WITHOUT USING A SUP...
Publication number
20110227263
Publication date
Sep 22, 2011
SMS Siemag Aktiengesellschaft
Johann REICHEL
C21 - METALLURGY OF IRON
Information
Patent Application
METHOD OF MANUFACTURING ULTRA LOW CARBON FERRITIC STAINLESS STEEL
Publication number
20110041653
Publication date
Feb 24, 2011
Joo Hyun Park
C21 - METALLURGY OF IRON
Information
Patent Application
METHOD IN CONNECTION WITH STEEL PRODUCTION
Publication number
20100275728
Publication date
Nov 4, 2010
Outokumpu Oyj
Sven-Eric Lunner
C21 - METALLURGY OF IRON
Information
Patent Application
METHOD AND DEVICE FOR PRODUCING STAINLESS STEEL WITHOUT USING A SUP...
Publication number
20100024600
Publication date
Feb 4, 2010
Johann Reichel
C21 - METALLURGY OF IRON
Information
Patent Application
METHOD AND DEVICE FOR PRODUCING PIG-IRON BASED STAINLESS STEEL WITH...
Publication number
20100011909
Publication date
Jan 21, 2010
Johann Reichel
C21 - METALLURGY OF IRON
Information
Patent Application
METHOD FOR MANUFACTURING FERRITIC STAINLESS STEEL SLABS WITH EQUIAX...
Publication number
20090223603
Publication date
Sep 10, 2009
Joo-Hyun Park
C21 - METALLURGY OF IRON
Information
Patent Application
Manufacture of Ferroalloys
Publication number
20090173187
Publication date
Jul 9, 2009
Andrew Miller Cameron
C21 - METALLURGY OF IRON
Information
Patent Application
Method in Connection with Steel Production
Publication number
20070215249
Publication date
Sep 20, 2007
OUTOKUMPUS STAINLESS AKTEIBOLAG
Sven-Eric Lunner
C21 - METALLURGY OF IRON
Information
Patent Application
Refining method and refining apparatus for chromium-contained molte...
Publication number
20070152386
Publication date
Jul 5, 2007
NIPPON STEEL CORPORATION
Kosuke Yamashita
C21 - METALLURGY OF IRON
Information
Patent Application
Method for refining molten iron containing chromium
Publication number
20040245682
Publication date
Dec 9, 2004
Kosuke Yamashita
C21 - METALLURGY OF IRON
Information
Patent Application
Method for decarbonization refining of chromium-containing molten s...
Publication number
20040182203
Publication date
Sep 23, 2004
Ryuji Nakao
C21 - METALLURGY OF IRON
Information
Patent Application
Method for refining stainless steel with high purity
Publication number
20040173055
Publication date
Sep 9, 2004
Hyo Seok Song
C21 - METALLURGY OF IRON
Information
Patent Application
Method for producing stainless steels, in particular high-grade ste...
Publication number
20040099091
Publication date
May 27, 2004
Karl Reiner Gotzinger
C21 - METALLURGY OF IRON