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Class Information
Number: 420/128
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > Nitrogen containinig
Description: Alloy or metallic composition which additionally contains nitrogen.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8668784 Steel for welded structure and producing method thereof Mar. 11, 2014
8623108 Wear-resistant material Jan. 7, 2014
8623154 Electron-beam welded joint, steel for electron-beam welding, and manufacturing method Jan. 7, 2014
8562762 High strength hot rolled steel products for line-pipes excellent in low temperature toughness and production method of the same Oct. 22, 2013
8557065 Steel sheet for cans and method for manufacturing the same Oct. 15, 2013
8535459 Steel material for hardening Sep. 17, 2013
8518191 Bake-hardenable cold rolled steel sheet with superior strength, galvannealed steel sheet using the cold rolled steel and method for manufacturing the cold rolled steel sheet Aug. 27, 2013
8430976 Rail steel with an excellent combination of wear properties and rolling contact fatigue resistance Apr. 30, 2013
8361248 Steel superior in CTOD properties of weld heat-affected zone and method of production of same Jan. 29, 2013
8128763 Bake-hardenable cold rolled steel sheet with superior strength, galvannealed steel sheet using the cold rolled steel sheet and method for manufacturing the cold rolled steel sheet Mar. 6, 2012
8097096 Fire resistant steel excellent in high temperature strength, toughness, and reheating embrittlement resistance and process for production of the same Jan. 17, 2012
8071018 High carbon hot-rolled steel sheet Dec. 6, 2011
8048237 Ultra soft high carbon hot rolled steel sheet and method for manufacturing same Nov. 1, 2011
8048367 High strength thick-gauge steel plate superior in weldability and having tensile strength of 780 MPA or more and method of production of same Nov. 1, 2011
8034199 Case-hardening steel excellent in cold forgeability and low carburization distortion property Oct. 11, 2011
7998285 Abrasion-resistant steel plate Aug. 16, 2011
7922838 Crude oil tank fabricated from steel plate Apr. 12, 2011
7820099 Hot rolled steel sheet excellent in chemical convertibility and method of production of the same Oct. 26, 2010
7780799 Cold-rolled steel sheet having a tensile strength of 780 MPA or more, an excellent local formability and a suppressed increase in weld hardness Aug. 24, 2010
7731896 Low alloy steel and weld joint thereof excellent in corrosion resistance to hydrochloric acid and sulfuric acid Jun. 8, 2010
7717976 Method for making strain aging resistant steel May. 18, 2010
7700037 Martensitic chromium-nitrogen steel and its use Apr. 20, 2010
7666350 Low carbon composite free-cutting steel product excellent in roughness of finished surface and method for production thereof Feb. 23, 2010
7604860 High tensile nonmagnetic stainless steel wire for overhead electric conductor, low loss overhead electric conductor using the wire, and method of manufacturing the wire and overhead electric c Oct. 20, 2009
7597841 Weld metal excellent in toughness and SR cracking resistance Oct. 6, 2009
7501031 Steel sheet for tin plated steel sheet and tin-free steel sheet each having excellent formability and manufacturing method thereof Mar. 10, 2009
7488396 Superior in machinability and method of production of same Feb. 10, 2009
7347902 High tensile hot rolled steel sheet excellent in shape freezing property and endurance fatigue characteristics after forming Mar. 25, 2008
7338630 Free-cutting steel and fuel injection system component using the same Mar. 4, 2008
7332220 Iron nitride magnetic powder and method of producing the powder Feb. 19, 2008
7101445 Cold rolled steel sheet and galvanized steel sheet having strain age hardenability and method of producing the same Sep. 5, 2006
6942741 Iron alloy strip for voice coil motor magnetic circuits Sep. 13, 2005
6893727 Metal gasket and a material for its manufacture and a method for their manufacture May. 17, 2005
6797231 Steel for machine structural use Sep. 28, 2004
6761777 High chromium nitrogen bearing castable alloy Jul. 13, 2004
6706419 Cold-rolled steel sheet or hot-rolled steel sheet excellent in painting bake hardenability and anti aging property at room temperature, and method of producing the same Mar. 16, 2004
6669789 Method for producing titanium-bearing microalloyed high-strength low-alloy steel Dec. 30, 2003
6660105 Case hardened steel excellent in the prevention of coarsening of particles during carburizing thereof, method of manufacturing the same, and raw shaped material for carburized parts Dec. 9, 2003
6645317 Metal components for picture tubes Nov. 11, 2003
6623869 Metal material having good resistance to metal dusting Sep. 23, 2003
6599469 Non-heat treated steel for soft nitriding Jul. 29, 2003
6582835 Coated ferrite stainless steel sheet usable in the automobile exhaust sector Jun. 24, 2003
6565676 Material for a stretched mask for color picture tube May. 20, 2003
6562152 High strength steel plate having improved workability and plating adhesion and process for producing the same May. 13, 2003
6511553 Steel for steel excellent in workability and method of deoxidizing same Jan. 28, 2003
6428631 High-strength steel sheet having excellent formality and resistance to softening of the heat affected zone after welding Aug. 6, 2002
6425963 High tensile strength hot-rolled steel sheet Jul. 30, 2002
6361624 Fully-stabilized steel for porcelain enameling Mar. 26, 2002
6344093 High tensile strength steel product for high heat input welding, having excellent toughness in heat-affected zone Feb. 5, 2002
6312529 Steel compositions and methods of processing for producing cold-formed and carburized components with fine-grained microstructures Nov. 6, 2001

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