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Class Information
Number: 420/104
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > Chromium containing, but less than 9 percent
Description: Alloy or metallic composition which additionally contains chromium.

Sub-classes under this class:

Class Number Class Name Patents
420/105 Molybdenum containing 88
420/112 Nickel containing 74
420/115 Processes 15
420/114 Tungsten containing 29

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8709336 Method for making an abrasion-resistant steel plate and plate obtained Apr. 29, 2014
8691030 Low alloy steels with superior corrosion resistance for oil country tubular goods Apr. 8, 2014
8641835 Iron alloy, iron-alloy member, and process for manufacturing the same Feb. 4, 2014
8636852 High strength galvanized steel sheet and method for manufacturing the same Jan. 28, 2014
8562759 Compositions and methods for determining alloys for thermal spray, weld overlay, thermal spray post processing applications, and castings Oct. 22, 2013
8557061 Spring steel with excellent resistance to hydrogen embrittlement and steel wire and spring obtained from the steel Oct. 15, 2013
8475605 Surface layer-hardened steel part and method of manufacturing the same Jul. 2, 2013
RE44153 Coated hot- and cold-rolled steel sheet comprising a very high resistance after thermal treatment Apr. 16, 2013
8404178 High-strength pearlitic steel rail having excellent delayed fracture properties Mar. 26, 2013
8394209 High-strength steel sheet excellent in resistance to stress-relief annealing and in low-temperature joint toughness Mar. 12, 2013
8361382 High-strength pearlitic steel rail having excellent delayed fracture properties Jan. 29, 2013
8357328 Methods for processing nanostructured ferritic alloys, and articles produced thereby Jan. 22, 2013
8273292 Steel for machine and structural use having excellent machinability Sep. 25, 2012
8187530 Steel for high-cleanliness spring with excellent fatigue characteristics and high-cleanliness spring May. 29, 2012
8163108 High-strength cold-rolled steel sheet, high-strength galvanized steel sheet, and high-strength alloyed hot-dip galvanized steel sheet having excellent formability and weldability, and methods Apr. 24, 2012
8124008 Free cutting steel Feb. 28, 2012
8070887 High-strength steel sheet and high-strength steel pipe excellent in deformability and method for producing the same Dec. 6, 2011
8071018 High carbon hot-rolled steel sheet Dec. 6, 2011
8057650 Soft magnetic FeCo based target material Nov. 15, 2011
8048237 Ultra soft high carbon hot rolled steel sheet and method for manufacturing same Nov. 1, 2011
8038934 High-strength spring steel excellent in brittle fracture resistance and method for producing same Oct. 18, 2011
8012271 Material for components of a gas turbine Sep. 6, 2011
8007716 Steel wire for high strength spring excellent in workability and high strength Aug. 30, 2011
8002909 Medical devices Aug. 23, 2011
7967921 Carburized component and manufacturing method thereof Jun. 28, 2011
7922968 Corrosion resistance improved steel sheet for automotive muffler and method of producing the steel sheet Apr. 12, 2011
7910512 Production process of electrode catalyst for fuel cell Mar. 22, 2011
7887924 High-strength steel with excellent unsusceptibility to hydrogen embrittlement Feb. 15, 2011
7846274 High strength steel pipe for an air bag Dec. 7, 2010
7819990 Iron-cobalt alloy, in particular for the moving core of electromagnetic actuators Oct. 26, 2010
7799147 Flaky soft magnetic metal powder and magnetic core member for RFID antenna Sep. 21, 2010
7749338 High burring, high strength steel sheet excellent in softening resistance of weld heat affected zone and method of production of same Jul. 6, 2010
7727463 Steel pipe for an airbag system Jun. 1, 2010
7699947 Ultrahigh strength hot-rolled steel and method of producing bands Apr. 20, 2010
7615186 Spring steel excellent in sag resistance and fatigue property Nov. 10, 2009
7601230 Medical devices Oct. 13, 2009
7597841 Weld metal excellent in toughness and SR cracking resistance Oct. 6, 2009
7566416 Steel pipe for an airbag inflator and a process for its manufacture Jul. 28, 2009
7387691 Hot forged non-heat treated steel for induction hardening Jun. 17, 2008
7229507 High speed tool steel Jun. 12, 2007
7211159 Ferritic heat-resistant steel and method for production thereof May. 1, 2007
6953508 High strength steel weld having improved resistance to cold cracking and a welding method Oct. 11, 2005
6837945 Steel cold work tool, its use and manufacturing Jan. 4, 2005
6821360 Heat-resisting steel, method for thermally treating heat-resisting steel, and components made of heat-resisting steel Nov. 23, 2004
6737018 Corrosion-resistant chromium steel for architectural and civil engineering structural elements May. 18, 2004
6712914 Non-heat treated crankshaft Mar. 30, 2004
6689312 Alloy composition and improvements in mold components used in the production of glass containers Feb. 10, 2004
6669790 Iron-based casting alloy Dec. 30, 2003
6652991 Ductile NiAl intermetallic compositions Nov. 25, 2003
6645320 Steel sheet excellent in ductility and strength stability after heat treatment Nov. 11, 2003

1 2 3 4

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