Assignee: Nisshin Steel Co., Ltd.

Location: Tokyo, JP
No. of patents: 157

Number	Title	Issue Date
8015851	Dowel forming method for buckle base member When forming a dowel section by performing press working on each of portions constituting side walls of a buckle base member, a die having a negative clearance with a punch portion (2) is used whose length or diameter is larger than a length or diameter of a ...	09/13/2011
7943085	Ferritic stainless steel for automobile exhaust gas passage components and welded steel pipe A ferritic stainless steel for automobile exhaust gas passage components comprises, in mass percent, C: not more than 0.03%, Si: not more than 1%, Mn: not more than 1.5%, Ni: not more than 0.6%, Cr: 10-20%, Nb: not more than 0.5%, Ti: 0.05-0.3%, Al: more than 0.03% ...	05/17/2011
7927043	Rockbolts made of steel pipes A sleeve 10 for introduction of a pressurized fluid, which is attached to a rockbolt main body 1, comprises a cylindrical projecting part 11 of a large diameter and a bearing-plate-holding part 12 of a diameter smaller than an aperture of...	04/19/2011
7879508	Separator for low-temperature type fuel cell and production method therefor A stainless steel sheet useful as a separator for a low-temperature fuel cell has the surface state that a lot of fine projections (p) stand close together around many fine pits (d) formed over a whole surface. The surface state is realized by alternating electrolyt...	02/01/2011
7794179	Rockbolt of high strength steel pipe and method of manufacturing the same A high-strength steel pipe rockbolt has an expansive rockbolt main body prepared by processing a high-strength steel sheet of 1.8-2.3 mm in thickness with a tensile strength of 490-640 N/mm2 and an elongation of 20% or more into a welded pipe and roll-for...	09/14/2010
7608119	Separator for low-temperature type fuel cell and production method therefor A stainless steel sheet useful as a separator for a low-temperature fuel cell has the surface state that a lot of fine projections (p) stand close together around many fine pits (d) formed over a whole surface. The surface state is realized by alternating electrolyt...	10/27/2009
7501029	High-strength, high-permeability steel sheet for picture tube band and method of producing the same A high-strength, high-permeability steel sheet for picture tube band comprises, in mass percent, C: 0.003-0.010%, Si: 0.5-1.0%, Mn: 1.0-2.0%, P: 0.04-0.15%, S: not more than 0.02%, Al: not more than 0.030%, N: not more than 0.004% and the balance of Fe and unavoidab...	03/10/2009
7473864	Weldment of different materials and resistance spot welding method A joined part of an aluminum-coated steel sheet and an aluminum sheet is composed of an intermetallic compound layer which exists in a region in which a part of a coated layer exists before the joining and an aluminum melted and solidified part which also exists on ...	01/06/2009
7250071	Method of manufacturing austenitic stainless steel having less susceptibility to cracking during forming A new austenitic stainless steel containing approximately 0.1-1.0 mass % of Si and not more than approximately 0.003 mass % of Al. Nonmetallic inclusions dispersed in a steel matrix are converted to MnO—SiO2—Al2O3 containing not ...	07/31/2007
7182824	Method of manufacturing zinc alloy ingot A molten zinc alloy, which contains 4–22 mass % Al, 1–7 mass % Mg and optionally one ore more of Ti, B and Si at very small ratios, is held at a temperature Th higher than (a solidification-beginning temperature Ts.b.+85° C.) for homogeniz...	02/27/2007
7150800	Production method of belt for stainless steel continuously variable transmission belt When a metastable austenitic stainless steel strip with a value Md(N), which is calculated from a composition, of 20–100 is ring-rolled to a steel belt, the relationship of −0.3913T+0.5650Md(N)+60.46ε≧65.87 is established among a material temperature T, an eq...	12/19/2006
7147934	Chemically processed steel sheet excellent in corrosion resistance A chemically processed steel sheet comprises a steel base coated with an Al—Si alloy plating layer, whose Si content is preferably adjusted to 5–13 mass % as a whole and to 7–80 mass % at a surface, and a converted layer generated on the surface of the plating...	12/12/2006
7094295	Ferritic stainless steel sheet having good workability and manufacturing method thereof A method of manufacturing a ferritic stainless steel sheet having good workability with less anisotropy. The steps include providing a ferritic stainless steel comprising C up to about 0.03 mass %, N up to about 0.03 mass %, Si up to about 2.0 mass %, Mn up to about...	08/22/2006
7070663	Ferritic and martensitic stainless steels excellent in machinability A ferritic or martensitic stainless steel has the structure that Cu-enriched particles with concentration of C not less than 0.1 mass % or concentration of Sn and/or In not less than 10 mass % were dispersed in a matrix. Precipitation and dispersion of Cu-enriched p...	07/04/2006
7014719	Austenitic stainless steel excellent in fine blankability An austenitic stainless steel comprising (C+½N) up to 0.060 mass %, Si up to 1.0 mass %, Mn up to 5 mass %, S up to 0.003 mass %, S/Mn ratio up to 0.003, 15–20 mass % Cr, 5–12 mass % Ni, Cu up to 5 mass %, 0–3.0 mass % Mo and the balance being Fe except inevi...	03/21/2006
6987081	Painted metal sheet for printing with a sublimation dye A colored metal sheet useful as a decorative member, a multi-colored signboard, etc. is provided by transfer-printing a topcoat or clear paint layer 4 formed on a substrate metal sheet 1 with a sublimation dye. A basecoat paint layer 2 and a pri...	01/17/2006
6935529	Stainless steel fuel tank for automobile A fuel tank for a motor vehicle is fabricated from an austenitic stainless steel sheet having elongation of 50% or more after fracture by a uniaxial stretching test with a work-hardening coefficient of 4000 N/mm2 or a ferritic stainless steel sheet having...	08/30/2005
6905041	Fuel tank made from aluminum coated steel sheet An Al-coated steel sheet is improved in anti-scratching property during press-working and corrosion-resistance to a stored fuel by direct formation of an alkali-soluble resin film on an Al-coated steel sheet. An alkali-soluble resin, which can be dissolved in an alk...	06/14/2005
6890648	CR-free paint compositions and painted metal sheets A paint composition containing a corrosion inhibitor A prepared from porous silica particles, to which Ca ion is bonded by ion-exchange, and a polyphosphate B preferably at an A/B weight ratio of 60/40 to 5/95 and at an A+B ratio of 5-150 parts by weight based on 10...	05/10/2005
6851455	Stainless steel oil feeding pipe A fuel-filler tube, which is made of a welded pipe of corrosion-resistant austenitic or ferritic stainless steel, has a fuel-supply opening with high dimensional accuracy. The austenitic stainless steel has hardness of 180 HV or less with a work-hardening coefficien...	02/08/2005
6802430	Corrosion-resistant fuel tank and fuel-filler tube for motor vehicle A fuel tank and a fuel-filler tube, which maintain excellent corrosion-resistance over a long term even in a severely corrosive atmosphere, is made of a ferritic stainless steel sheet good of formability. The steel sheet, which has elongation of 30% or more after fr...	10/12/2004
6780258	Austenitic stainless steel less susceptible to cracking during forming and a manufacturing method thereof A new austenitic stainless steel containing approximately 0.1-1.0 mass % of Si and not more than approximately 0.003 mass % of Al. Nonmetallic inclusions dispersed in a steel matrix are converted to MnO—SiO2—Al2O3 containing not ...	08/24/2004
6773472	Gas reformer for recovery of hydrogen A ferritic stainless steel sheet containing 16-25 mass % of Cr and Ti and/or Nb at a ratio of (C+N)×8 or more is used as a substrate for formation of a hydrogen-permeating membrane exposed to a high-temperature atmosphere of 600-900° C., while another ferritic sta...	08/10/2004
6764555	High-strength austenitic stainless steel strip having excellent flatness and method of manufacturing same A high-strength austenitic stainless steel strip exhibiting excellent flatness with Vickers hardness of 400 or more has the composition comprising: C up to 0.20 mass %, Si up to 4.0 mass %, Mn up to 5.0 mass %, 4.0-12.0 mass % Ni, 12.0-20.0 mass % Cr, Mo up to 5.0 m...	07/20/2004
6749701	Method of inhibiting cold-rolled steel sheet edge cracking, and method of producing the steel sheet A high-strength, high-toughness martensitic stainless steel sheet has a chemical composition comprising, in mass percent, more than 0.03 to 0.15% of C, 0.2-2.0% of Si, not more than 1.0% of Mn, not more than 0.06% of P, not more than 0.006% of S, 2.0-5.0% of Ni, 14....	06/15/2004
6746986	Painted metal sheet for printing with a sublimation dye A colored metal sheet useful as a decorative member, a multi-colored signboard, etc. is provided by transfer-printing a topcoat or clear paint layer 4 formed on a substrate metal sheet 1 with a sublimation dye. A basecoat paint layer 2 and a pri...	06/08/2004
6733694	Electric resistance material An electric resistance material comprises an Fe—Cr—Ni alloy having composition of C up to 0.1%, Si up to 5%, Mn up to 6%, 9-32% Cr, 6-25% Ni, N up to 0.2%, 0-3% Mo, 0-4% Cu, 0-5% Al, 0-0.4% Ti, 0-0.4% Nb, 0-0.005% B and the balance being substantially Fe with th...	05/11/2004
6730414	Chemically processed steel sheet excellent in corrosion resistance A chemically processed steel sheet comprising a steel base coated with an Al—Si alloy plating layer, whose Si content is preferably adjusted to approximately 5-13 mass % as a whole and to approximately 7-80 mass % at a surface, and a converted layer generated on t...	05/04/2004
6723181	Soft stainless steel sheet excellent in workability A new soft stainless steel sheet has an austenite-stability index Md30 controlled in a range of −120 to −10 and a stacking fault formability index SFI controlled not less than 30, and involves precipitates whose Cu concentration is controlled not more...	04/20/2004
6677058	Hot-dip Zn plated steel sheet excellent in luster-retaining property and method of producing the same Degradation of the surface luster of a hot-dip Zn--Al--Mg plated steel sheet is inhibited by controlling the contact temperature between the plating layer and a water stream in a water cooling step after plating layer solidification, thereby suitably cont...	01/13/2004
6673166	Ferritic stainless steel sheet having good workability The newly proposed ferritic stainless steel sheet consists of C up to 0.03 mass %, N up to 0.03 mass %, Si up to 2.0 mass %, Mn up to 2.0 mass %, Ni up to 0.6 mass %, 9-35 mass % Cr, 0.15-0.80 mass % Nb, optionally one or more of Ti up to 0.5 mass %, Mo u...	01/06/2004
6488786	High-strength, high-toughness martensitic stainless steel sheet A high-strength, high-toughness martensitic stainless steel sheet has a chemical composition comprising, in mass percent, more than 0.03 to 0.15% of C, 0.2-2.0% of Si, not more than 1.0% of Mn, not more than 0.06% of P, not more than 0.006% of S, 2.0-5.0%...	12/03/2002
6440236	Ultra-high strength metastable austenitic stainless steel containing Ti and a method of producing the same An ultra-high strength metastable austenitic stainless steel exhibiting a tensile strength of not less than 2200 N/mm2 has a chemical composition comprising, in mass %, not more than 0.15 % of C, more than 1.0 to 6.0 % of Si, not more than 5.0 ...	08/27/2002
6379820	Hot-dip Zn-A1-Mg plated steel sheet good in corrosion resistance and surface appearance and method of producing the same A hot-dip Zn--Al--Mg plated steel sheet good in corrosion resistance and surface appearance that is a hot-dip Zn-base plated steel sheet obtained by forming on a surface of a steel sheet a hot-dip Zn--Al--Mg plating layer composed of Al: 4.0-10 wt. %, Mg:...	04/30/2002
6329067	Chromating solution and chromated metal sheet In a chromating solution comprising a water-soluble chromium compound and a reducing agent and in which hexavalent chromium ions produced by dissolution of the water-soluble chromium compound have been partly reduced with the reducing agent to trivalent c...	12/11/2001
6273946	Method for production of multi-layered epitaxially grown crystal and apparatus therefor A used melt receptacle 40, a holder 60 for the alignment of crystalline substrates and a melt receptacle 20 are piled up in this order along a vertically extending central axis. A plurality of melt reservoirs 21a to 21d for different kinds of melts are di...	08/14/2001
6235410	Hot-dip Zn-Al-Mg coated steel sheet excellent in corrosion resistance and surface appearance and process for the production thereof A hot-dip Zn--Al--Mg plated steel sheet good in corrosion resistance and surface appearance that is a hot-dip Zn-base plated steel sheet obtained by forming on a surface of a steel sheet a hot-dip Zn--Al--Mg plating layer composed of Al: 4.0-10 wt. %, Mg:...	05/22/2001
6222286	Stepping motor with rust inhibiting and eddy current minimizing characteristics In a stepping motor, stator yokes have a plurality of comb-tooth-shaped magnetic poles 5b, 6b, 7b and 8b in such a manner that the comb-tooth-shaped magnetic poles are opposed to each other coaxially to a rotor portion made from a permanent magnet magneti...	04/24/2001
6210501	Heavy-duty cold-rolling for mechanically descaling a hot-rolled steel strip before pickling When a hot-rolled steel strip 1 is rolled at a large rolling reduction by a cold-rolling mill 4, cracking and interlayer peeling occur in those mill-scales which can not keep up with the elongation of base steel so as to weaken the adhesiveness of the mil...	04/03/2001
6190464	Chromating solution and chromated metal sheet In a chromating solution comprising a water-soluble chromium compound and a reducing agent and in which hexavalent chromium ions produced by dissolution of the water-soluble chromium compound have been partly reduced with the reducing agent to trivalent c...	02/20/2001

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Assignee: Nisshin Steel Co., Ltd.