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| Number | Title | Issue Date |
| 6602357 | Grain oriented electrical steel sheet with low iron loss and production method for same A grain oriented electrical steel sheet comprises metal part containing Si: about 2.5 to about 5.0 mass % and Cr: about 0.05 to about 1.0 mass %, and an insulation coating formed on a surface of the metal part. A tension imparted to the metal part in the ... | 08/05/2003 |
| 6581779 | Method of the magnetic loading of a sintering material In a method of the magnetic loading of a sintering material, magnetically susceptible sinterable substances of high magnetization and fine substances of slidable dropping at low speed are segregated in great amounts in an upper portion of a sintering mate... | 06/24/2003 |
| 6579340 | Fume dust suppression during pouring of molten metal, and apparatus Fume dust is prevented when molten metal is poured into a vessel, and water spray of water mist is introduced into the vessel or onto the molten metal, creating a reduced level of oxygen concentration of about 12% by volume, preferably about 8% by volume,... | 06/17/2003 |
| 6572518 | Cermet powder for sprayed coating excellent in build-up resistance and roll having sprayed coating thereon A cermet powder for thermal spray coating, which is sprayed on a roll surface of a conveyer roll inside a furnace for heat treating a high tensile strength steel strip thereby to form a coating film, comprises: an alloy powder containing 3 to 8 mass % of ... | 06/03/2003 |
| 6544680 | Fuel cell separator, a fuel cell using the fuel cell separator, and a method for making the fuel cell separator A fuel cell separator including (a) about 100 parts by weight of graphitized meso-carbon microbeads, (b) about 10 to 35 parts by weight of one of a thermosetting resin and a thermoplastic resin, and (c) about 1 to 40 parts by weight of at least one carbon... | 04/08/2003 |
| 6540848 | High strength, high toughness, seamless steel pipe for line pipe A high-strength, high-toughness seamless steel pipe used for a line pipe contains 0.03 to 0.06% of C, 0.05 to 0.15% of Si, 1.6 to 2.0% of Mn, 0.010 to 0.10% of Al, 0.3 to 0.7% of Ni, 0.10 to 0.40% of Mo, 0.01 to 0.06% of V, 0.003 to 0.03% of Nb, 0.003 to ... | 04/01/2003 |
| 6540957 | Ladle, a ladle heating system and methods of heating the ladle A ladle after teeming for a continuous casting and a subsequent slag discharge is mounted on a ladle truck and then moved by the ladle truck to a tapping station. The ladle on the ladle truck is then stationed over a predetermined stand-by time and is the... | 04/01/2003 |
| 6539602 | Method of repairing coke oven Repairing a chamber coke oven by heat-insulating a repair space in the oven, dividing a brick wall in a portion to be repaired into a plurality of layers stacked one above another, dismantling and removing the brick wall in the repaired portion, and carry... | 04/01/2003 |
| 6513789 | Method and apparatus for short-term relining or construction of blast furnace Method and apparatus for short-term relining or construction of a blast furnace uses a grounding apparatus for grounding of ring-shaped blast furnace segments having shells and a casting floor present as a blast furnace floor for transferring the ring-sha... | 02/04/2003 |
| 6514307 | Iron-based sintered powder metal body, manufacturing method thereof and manufacturing method of iron-based sintered component with high strength and high density An sintered iron-based powder metal body with outstandingly lower re-compacting load and having a high density and a method of manufacturing an iron-based sintered component with fewer pores of a sharp shape and having high strength and high density, the ... | 02/04/2003 |
| 6503445 | Iron-based powder composition for powder metallurgy having higher flowability and higher compactibility and process for production thereof A process for producing an iron-based powder composition for powder metallurgy having excellent flowability at room temperature and a warm compaction temperature, having improved compactibility enabling lowering ejection force in compaction, and to provid... | 01/07/2003 |
| 6500280 | Ferritic Cr-containing steel sheet having excellent ductility, formability, and anti-ridging properties Producing a ferritic Cr-containing steel sheet having excellent ductility, formability, and anti-ridging properties, and exhibiting excellent surface quality after forming, wherein a ferritic Cr-containing steel sheet contains, by mass %, about 0.001 to 0... | 12/31/2002 |
| 6479011 | Method of scrapping furnace bottom section of blast furnace A solidified residual iron within a blast furnace is suspended up by employing a shell suspending device fixed to a tuyere arranged in a lower end portion of an upper portion of a furnace body suspended by a lift jack and a solidified residual iron suspen... | 11/12/2002 |
| 6475304 | Grain-oriented silicon steel sheet and process for production thereof Grain-oriented silicon steel sheet with Bi as an auxiliary inhibitor and a forsterite coating film having a Cr spinel oxide subscale of FeCr2 O4 or Fex Mn1-x Cr2 O4 (0.6ࣘxࣘ1), made from... | 11/05/2002 |
| 6458221 | Ferritic stainless steel plate The present invention provides a ferritic stainless steel sheet having excellent formability and excellent surface quality after forming. In specific means, the steel sheet contains, by mass %, 0.02 to 0.06% of C, 1.0% or less of Si, 1.0% or less of Mn, 0... | 10/01/2002 |
| 6442989 | Wire sizing rolling method In a sizing rolling method carried out by installing at least 3 sets of 4-roll rolling mills in series, a central angle θ1 of the perfect circle forming section of each rolling roll in a first path is set to less than 15°. The central angle Î... | 09/03/2002 |
| 6444051 | Method of manufacturing a grain-oriented electromagnetic steel sheet A method of making a grain-oriented electromagnetic steel sheet having a low iron loss and a high magnetic flux density, from a steel slab with 0.03 to 0.095 wt % carbon, about 1.5 to 7.0 wt % Si, about 0.03 to 2.50 wt % manganese, about 0.003 to 0.040 wt... | 09/03/2002 |
| 6444050 | Grain-oriented electromagnetic steel sheet A grain-oriented electromagnetic steel sheet having a multiplicity of fine grains having a diameter of about 3 mm or less on the surface of the steel sheet, in a numerical ratio of about 65% or more and of about 98% or less relative to the constituting gr... | 09/03/2002 |
| 6436340 | Weatherable steel material Steel is obtained which comprises by wt %, C: 0.001-0.025%, Si: not more than 0.60%, Mn: 0.10-3.00%, P: 0.005-0.030%, S: not more than 0.01%, Al: not more than 0.10%, Cu: 0.1-1.5%, Ni: 0.1-6.0%, B: 0.0001-0.0050%, and the balance being Fe and inevitable i... | 08/20/2002 |
| 6432227 | Electromagnetic steel sheet and process for producing the same Electromagnetic steel sheet from a high-purity steel slab, composed essentially of Si 2.0 to 8.0 wt %, Mn 0.005 to 3.0 wt % and Al 0.0010 to 0.012 wt % with each of Se, S, N and O each not more than 30 ppm.... | 08/13/2002 |
| 6428632 | Non-oriented electromagnetic steel sheet having reduced magnetic anisotropy in high frequency region and excellent press workability According to the invention, a nonoriented electromagnetic steel sheet being small in the magnetic anisotropy in a high frequency zone and thus excellent in the magnetic properties as a rotating machine and having an excellent press formability such as pun... | 08/06/2002 |
| 6425963 | High tensile strength hot-rolled steel sheet High tensile strength hot-rolled steel sheet suitable for use in interior materials for automobiles and a method for producing the same, in which bake hardenability, fatigue resistance, crash resistance, and resistance to room temperature aging are improv... | 07/30/2002 |
| 6426039 | Ferritic stainless steel Ferritic stainless steel comprising all three of Co, V, and B, having a Co content of about 0.01 mass % to about 0.3 mass %, a V content of about 0.01 mass % to about 0.3 mass %, and a B content of about 0.0002 mass % to about 0.0050 mass %, and having su... | 07/30/2002 |
| 6423157 | Method of making grain-oriented magnetic steel sheet having low iron loss Grain-oriented magnetic steel sheet made by the method comprising of hot rolling and final finish annealing, wherein (1) the O content in the steel slab is limited to up to about 30 wtppm; (2) for the entire steel sheet including an oxide film before final finish ... | 07/23/2002 |
| 6416592 | Electromagnetic steel sheet having excellent magnetic properties and production method thereof Electromagnetic steel sheet having excellent magnetic properties and a texture gratly integrated in the {100} orientation, and an uncomplicated and low cost production method; with about a 15 μΩ.multidot.cm or more specific resistivity, about a 2.0... | 07/09/2002 |
| 6413332 | Method of producing ferritic Cr-containing steel sheet having excellent ductility, formability, and anti-ridging properties Producing a ferritic Cr-containing steel sheet having excellent ductility, formability, and anti-ridging properties, and exhibiting excellent surface quality after forming, wherein a ferritic Cr-containing steel sheet contains, by mass %, about 0.001 to 0... | 07/02/2002 |
| 6406558 | Method for manufacturing magnetic steel sheet having superior workability and magnetic properties Manufacturing semiprocessed non-oriented magnetic steel sheets, which has superior workability in steps of assembling cores for motors or the like, in which improvement in productivity and higher accuracy of the products can be realized, by hot rolling a ... | 06/18/2002 |
| 6403021 | Method of constructing a blast furnace body and lifting transfer apparatus A method and lifting transfer apparatus for dismantling an existing blast furnace body by dividing it into a plurality of furnace-body ring blocks, and efficiently transporting each of the ring blocks to and from a furnace-body disassembly site and back t... | 06/11/2002 |
| 6391253 | Stainless steel having excellent antibacterial property and method for producing the same The present invention provides a stainless steel being excellent in workability, corrosion resistance and antibacterial property. To be more specific, a stainless steel containing 10 wt % or more of Cr is rendered to contain 0.0001-1 wt % of Ag, or furthe... | 05/21/2002 |
| 6383309 | Ferritic stainless steel plate A ferritic stainless steel plate of excellent ridging resistance and formability, as well as a manufacturing method thereof are proposed. Specifically, the rolling is conducted at a rolling reduction of 30% or more in at least 1 pass and at a temperature ... | 05/07/2002 |
| 6368728 | Galvannealed steel sheet and manufacturing method Galvannealed steel sheet and method, made by applying hot-dip galvanizing to a steel sheet, heating at a heating rate of at least about 10° C./second to a maximum sheet temperature within a range of from about 470 to 550° C., and applying an alloying tr... | 04/09/2002 |
| 6364963 | Grain oriented electrical steel sheet having very low iron loss and production process for same In a grain oriented electrical steel sheet used for cores of transformers and generators, a high alignment degree of grain orientations reduces iron loss, by precipitating very fine AlN or/and BN and providing strong inhibiting effect against the growth o... | 04/02/2002 |
| 6349833 | Method of feeding sintering material by use of magnetic forces In a method of the magnetic loading of a sintering material, magnetically susceptible sinterable substances of high magnetization and fine substances of slidable dropping at low speed are segregated in great amounts in an upper portion of a sintering mate... | 02/26/2002 |
| 6331215 | Process for producing grain-oriented electromagnetic steel sheet A grain-oriented electromagnetic steel sheet is provided which has a low ratio of iron loss in a weaker magnetic field to that in a stronger magnetic field and has special advantage in EI cores and the like. Also provided is a process for producing that s... | 12/18/2001 |
| 6322638 | Electromagnetic steel sheet having excellent high-frequency magnetic properties Electromagnetic steel sheets which contain Cr in an amount of from about 1.5 to 20% by weight and Si in an amount of from about 2.5 to 10% by weight, while having a total amount of C and N of not larger than about 100 ppm by weight, and which has a specif... | 11/27/2001 |
| 6322635 | Electromagnetic steel sheet and process for producing the same Electromagnetic steel sheet from a high-purity steel slab, composed essentially of Si 2.0 to 8.0 wt %, Mn 0.005 to 3.0 wt % and Al 0.0010 to 0.012 wt % with each of Se, S, N and O each not more than 30 ppm.... | 11/27/2001 |
| 6322622 | Flame-spraying powdery repair mixture A flame spray mending material effective for applying a dense thermal spray mending layer to a silica brick wall of an industrial furnace, having a high crystallization ratio immediately after thermal spraying in a broad thermal spray condition, having an... | 11/27/2001 |
| 6322639 | Magnetic steel sheet having excellent magnetic properties and method of producing the same A magnetic steel sheet used for an alternating current core, and having excellent magnetic properties in both a rolling direction, and the direction perpendicular thereto, and a method of producing the magnetic steel sheet. The magnetic steel sheet in a r... | 11/27/2001 |
| 6309473 | Method of making grain-oriented magnetic steel sheet having low iron loss Grain-oriented magnetic steel sheet made by the method-including hot rolling and final finish annealing, wherein (1) the O content in the steel slab is limited to up to about 30 ppm; (2) for the entire steel sheet having final thickness including an oxide film... | 10/30/2001 |
| 6306341 | Stainless steel product having excellent antimicrobial activity and method for production thereof The present invention provides a stainless steel having superior corrosion resistance, antibacterial properties, and durability, the antibacterial properties being maintained after surface treatments commonly performed including, for example, polishing. I... | 10/23/2001 |
