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Class Information
Number: 420/89
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > Copper containing
Description: Alloy or metallic composition which additionally contains copper.










Sub-classes under this class:

Class Number Class Name Patents
420/90 Chromium containing 39
420/92 Nickel containing 57
420/93 Vanadium, zirconium, titanium or molybdenum containing 32


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8657969 High-strength galvanized steel sheet with excellent formability and method for manufacturing the same Feb. 25, 2014
8491731 Alloy composition, Fe-based nano-crystalline alloy and forming method of the same and magnetic component Jul. 23, 2013
8475605 Surface layer-hardened steel part and method of manufacturing the same Jul. 2, 2013
8414712 Thin strip of amorphous alloy, nanocrystal soft magnetic alloy, and magnetic core Apr. 9, 2013
8361245 Steel excellent in resistance to sulfuric acid dew point corrosion Jan. 29, 2013
8361248 Steel superior in CTOD properties of weld heat-affected zone and method of production of same Jan. 29, 2013
8298355 Magnetic alloy, amorphous alloy ribbon, and magnetic part Oct. 30, 2012
8298985 Catalyst for dehydrogenating primary alcohols Oct. 30, 2012
8293379 Quenchable steel sheet having high hot press workability and method of manufacturing the same Oct. 23, 2012
8142574 Steel product for welding Mar. 27, 2012
8118949 Copper precipitate carburized steels and related method Feb. 21, 2012
8083867 Amorphous alloy ribbon, nanocrystalline soft magnetic alloy and magnetic core consisting of nanocrystalline soft magnetic alloy Dec. 27, 2011
8071018 High carbon hot-rolled steel sheet Dec. 6, 2011
7922838 Crude oil tank fabricated from steel plate Apr. 12, 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
7905966 Method of producing a strip of nanocrystalline material and device for producing a wound core from said strip Mar. 15, 2011
7875130 Crude oil tank comprising a corrosion resistant steel alloy Jan. 25, 2011
7731896 Low alloy steel and weld joint thereof excellent in corrosion resistance to hydrochloric acid and sulfuric acid Jun. 8, 2010
7617964 Solder compositions; method of soldering, and a laminated transparency having bus bars Nov. 17, 2009
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
7588609 Friction material compositions and additives Sep. 15, 2009
7431812 Surface oxidised nickel-iron metal anodes for aluminium production Oct. 7, 2008
7210388 Bimetal saw band May. 1, 2007
6277895 Skeletal iron catalyst having improved attrition resistance and product selectivity in slurry-phase synthesis processes Aug. 21, 2001
6265451 Skeletal iron catalyst and its preparation for Fischer-Tropsch synthesis processes Jul. 24, 2001
6261389 Synchronizer ring Jul. 17, 2001
6206983 Medium carbon steels and low alloy steels with enhanced machinability Mar. 27, 2001
6200395 Free-machining steels containing tin antimony and/or arsenic Mar. 13, 2001
6165289 Water-resistant long-life rolling bearing Dec. 26, 2000
6149862 Iron-silicon alloy and alloy product, exhibiting improved resistance to hydrogen embrittlement and method of making the same Nov. 21, 2000
6001194 Bias material, magnetic marker and method of producing the bias material Dec. 14, 1999
5961747 Tin-bearing free-machining steel Oct. 5, 1999
5951944 Lowly decarburizable spring steel Sep. 14, 1999
5861565 Synchronizer ring Jan. 19, 1999
5858125 Magnetoresistive materials Jan. 12, 1999
5443664 Surge current-suppressing circuit and magnetic device therein Aug. 22, 1995
5304258 Magnetic alloy consisting of a specified FeTaN Ag or FeTaNCu composition Apr. 19, 1994
5292383 Steel sheets for procelain enameling and method of producing the same Mar. 8, 1994
5198040 Very thin soft magnetic Fe-based alloy strip and magnetic core and electromagnetic apparatus made therefrom Mar. 30, 1993
5192375 Fe-based soft magnetic alloy Mar. 9, 1993
5180450 High performance high strength low alloy wrought steel Jan. 19, 1993
5178689 Fe-based soft magnetic alloy, method of treating same and dust core made therefrom Jan. 12, 1993
5129966 High performance high strength low alloy cast steels Jul. 14, 1992
5069731 Low-frequency transformer Dec. 3, 1991
5045279 Corrosion-resistant carbon steel with good drawability characteristics Sep. 3, 1991
5019191 Magnetic steel plate for use as a magnetic shielding member and a method for the manufacture thereof May. 28, 1991
5019190 Fe-based soft magnetic alloy May. 28, 1991
4985088 Fe-based soft magnetic alloy product Jan. 15, 1991
4985089 Fe-base soft magnetic alloy powder and magnetic core thereof and method of producing same Jan. 15, 1991

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