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| Number | Title | Issue Date |
| 8137483 | Method of making a low cost, high strength, high toughness, martensitic steel A method of designing low cost, high strength, high toughness martensitic steel uses mathematical modeling to define optimum low cost chemical compositions, the content of retained austenite, and critical temperatures; melting an ingot, processing same, making steel... | 03/20/2012 |
| 7938917 | Method for controlling cooling of steel sheet A method for controlling the cooling of a steel sheet characterized by controlling the end-of-cooling temperature in a cooling process from the Ae3 or above temperature of the steel sheet, during which; preliminarily obtaining enthalpies (Hγ and Hα) of ... | 05/10/2011 |
| 7429302 | Stainless steel sheet for welded structural components and method for making the same A structural hot-rolled or cold-rolled stainless steel sheet having improved intergranular corrosion resistance and toughness at the welding heat affected zone and further having low strength and high elongation. The composition of the steel sheet contains less than... | 09/30/2008 |
| 7083686 | Steel product for oil country tubular good A steel product for oil country tubular good according to the invention comprises, in mass %, 0.10% to 0.35% C, 0.10% to 0.50% Si, 0.10% to 0.80% Mn, up to 0.030% P, up to 0.010% S, 0.30% to 1.20% Cr, 0.20% to 1.00% Mo, 0.005% to 0.40% V, 0.005% to 0. 100% Al, up to... | 08/01/2006 |
| 6852178 | Method for propagating vibratory motion into a conductive fluid and using the method to solidify a melted metal A static magnetic field and a wave are applied to an electrically conductive fluid so as to satisfy the mathematical expression 2Ï€f | 02/08/2005 |
| 6409847 | Austenitic nickel-chromium steel alloys The invention relates to an alloy steel with 0.3 to 1.0% carbon, 0.2 to 2.5% silicon, up to 0.8% manganese, 30.0 to 48.0% nickel, 16.0 to 22.0% chromium, 0.5 to 18.0% cobalt, 1.5 to 4% molybdenum, 0.2 to 0.6% niobium, 0.1 to O.5% titanium, 0.1 to 0.6% zir... | 06/25/2002 |
| 6346337 | Bulk amorphous metal magnetic component A bulk amorphous metal magnetic component has a plurality of layers of amorphous metal strips laminated together to form a generally three-dimensional part having the shape of a polyhedron. The bulk amorphous metal magnetic component may include an arcuat... | 02/12/2002 |
| 6344095 | Low-thermal expansion cast steel with excellent machinability A low-thermal expansion cast steel having an average linear thermal expansion coefficient of less than 4.0×10-6 /° C. in a range of room temperature to 100° C. and excellent machinability has a chemical composition (by mass) comprising 0.4-0... | 02/05/2002 |
| 6231694 | Process for producing Fe-Ni alloys used for electron gun parts Disclosed is a process for producing Fe--Ni alloys used for electron gun parts. The alloy consists of: all by weight, 30 to 55% of Ni; 0.05 to 2.00% of Mn; 0.001% to 0.050 of S; and the balance of Fe and inevitable impurities. The process substantially co... | 05/15/2001 |
| 6221183 | High-strength and low-thermal-expansion alloy, wire of the alloy and method of manufacturing the alloy wire A high-strength low-thermal-expansion alloy consisting of, by weight, 0.06 to 0.50% C, 25 to 65% in total of one or both of 65% or less Co and less than 30% Ni, and balance of Fe as a main component, other optional elements and unavoidable impurities, and... | 04/24/2001 |
| 6136102 | Maraging steel A maraging steel containing the following: Ni 14-23 wt. %, Mo 4-13 wt. %, Al 1-3.5 wt. %, Cࣘ0.01 wt. %, remainder Fe and impurities resulting from the processing. The composition also preferably satisfies the following conditions: Ni+Mo=23-27 wt. %, inc... | 10/24/2000 |
| 6110829 | Ultra-low temperature Al fill for sub-0.25 μm generation of ICs using an Al-Ge-Cu alloy An aluminum fill process for sub-0.25 μm technology integrated circuits that has a reflow temperature less than 400° C. that has low alloy resistivity and excellent electromigration characteristics. The aluminum allow is composed of Al-1% Ge-1% Cu.... | 08/29/2000 |
| 5989366 | Method of manufacturing thick steel product of high strength and high toughness having excellent weldability and minimal variation of structure and physical properties A method of manufacturing a thick steel product of high strength and high toughness having excellent weldability with minimal variation of material properties, comprises heating a steel raw material to the temperature of Ac3 to 1350° C., hot r... | 11/23/1999 |
| 5792286 | High-strength thin plate of iron-nickel-cobalt alloy excellent in corrosion resisitance, repeated bending behavior and etchability, and production thereof A high-strength thin plate, such as for IC lead frames, of an iron-nickel-cobalt alloy which is able to withstand repeated bending and is corrosion resistance and etchable, the alloy containing 27 to 30 wt. % N:, 5 to 18 wt. % Co, 0.10 to 3.0 wt. % Mn, 0.... | 08/11/1998 |
| 5688341 | Hydrogen-absorbing alloy electrode and method for evaluating hydrogen-absorbing alloys for electrode A hydrogen-absorbing alloy electrode utilizes as an electrode material a hydrogen-absorbing alloy having selectively oriented crystals, which is expressed in terms of a specific maximum value obtained from analysis of powder X-ray diffractometry. This ele... | 11/18/1997 |
| 5599407 | Method for estimating inclusion content of metals using reflectance A method for estimating the inclusion content of a metal, the method involving three steps. The first step is to section the metal to create an exposed inner surface of the metal. The second step is to measure the reflectance of the exposed inner surface ... | 02/04/1997 |
| 5496424 | Hydrogen absorbing alloy and process for preparing same A hydrogen absorbing alloy represented by the general formula R1-x Ax (Ni5-y By)z wherein R is Mm (misch metal) or La, A is at least one element selected from the group consisting of Ce, Nd, Pr, Sm an... | 03/05/1996 |
| 5279683 | Method of producing high-strength cold-rolled steel sheet suitable for working A method of producing a high-strength cold-rolled steel sheet suitable for working uses which utilizes a steel material having the following composition: not more than 0.006 wt % of C, not more than 0.5 wt % of Si, not more than 2.0 wt % of Mn, and not le... | 01/18/1994 |
| 5217544 | Process for the production of a stainless steel with martensite ferrite two-phase structure and steel obtained by the process The present invention relates to a process for the production of a stainless steel with a high elastic limit and a high breaking load, with a martensite ferrite two-phase structure exhibiting good malleability and good abrasion resistance, in which the st... | 06/08/1993 |
| 5188681 | Process for manufacturing thin strip or sheet of Cr-Ni-base stainless steel having excellent surface quality and material quality A process for manufacturing a thin sheet of a Cr-Ni-base stainless steel having an excellent surface quality and material quality, which comprises casting a cast strip having a thickness of 6 mm or less from a Cr-Ni-base stainless steel including 18% Cr-8... | 02/23/1993 |
| 5188677 | Method of manufacturing a magnetic disk substrate A method of manufacturing a titanium alloy magnetic disk substrate comprising (a) cold-rolling an alloy plate at a rolling ratio of no less than 30%, the alloy plate comprising 0.5 wt. % to 1.0 wt. % of Mo and containing oxygen, nitrogen and carbon in amo... | 02/23/1993 |
| 5127965 | Fe-Ni alloy sheet for shadow mask and method for manufacturing same An Fe-Ni alloy sheet for a shadow mask, which consists essentially of: nickel: from 34 to 38 wt. %, silicon: from 0.01 to 0.15 wt. %, manganese: from 0.01 to 1.00 wt. %, and the balance being iron and incidental impurities; the surface portion of the alloy sheet having ... | 07/07/1992 |
| 4973367 | Method of manufacturing steel sheet having excellent deep-drawability A method of manufacturing a steel sheet having excellent deep-drawability. A steel blank is rolled into a steel sheet having a predetermined thickness. The steel contains C: not more than 0.008 wt %, Si: not more than 0.5 wt %, Mn: not more than 1.0 wt %,... | 11/27/1990 |
| 4931106 | Hot rolled steel sheet having high resistances against secondary-work embrittlement and brazing embrittlement and adapted for ultra-deep drawing and a method for producing the same A hot rolled steel sheet having a specific composition and having a specific small grain size of ferrite constituting the steel sheet has high resistances against secondary-work embrittlement and brazing embrittlement and is adapted for ultra-deep drawing... | 06/05/1990 |
| 4838955 | Method for the manufacture of hard steel sheet from Al-killed continuous-cast carbon-manganese steel Steel sheet manufactured from Al-killed continuous cast carbon-manganese steel and having a hardness in the range 57 to 73 HR30T is characterized by a content of 0.03 to 0.10% by weight C and 0.15 to 0.50% by weight Mn, and an amount Z in ppm of dissolved... | 06/13/1989 |
| 4818299 | Method of manufacturing cold-rolled steel sheets A cold-rolled steel sheet for deep drawing having an improved bake hardenability is disclosed, which comprises 0.005-0.015 wt% of C, not more than 1.0 wt% of Si, not more than 1.0 wt% of Mn, not more than 0.15 wt% of P, 0.0005-0.10 wt% of Al, not more tha... | 04/04/1989 |
| 4812177 | Hot working method for producing a superplastic ferrous duplex-phase alloy A superplastic hot working method for a duplex-phase, nitrogen-containing ferrous alloy and stainless steel, and a superplastic duplex-phase ferrous alloy are disclosed. The ferrous alloy comprises: at least one of Si and Mn in an amount of not less than ... | 03/14/1989 |
| 4790885 | Method of producing high tensile-high toughness steel A method for manufacturing high tensile-high toughness steel plate, which the first step 15 preparing a steel slab or ingot consisting essentially, by weight, of 0.03 to 0.20% C 0.01 to 0.70% Si 0.50 to 1.80% Mn lesser concentrations of titanium, zirconium, an... | 12/13/1988 |
| 4755234 | Method of manufacturing pressure vessel steel with high strength and toughness A method of manufacturing pressure vessel steel having high strength and high toughness comprising the steps of heating steel to a temperature higher than 1200° C., said steel containing from 0.03 to 0.12 wt. % C, 0.10 to 0.8 wt. % Si, 0.45 to 1.00 wt. %... | 07/05/1988 |
| 4753691 | Method of directly softening rolled machine structural steels A method of directly softening a rolled machine structural steel is provided. This method is characterized by the fact that it comprises the steps of: hot rolling a steel consisting essentially of 0.2-0.65% C, less than 0.1% Si, 0.2-0.5% Mn, 0.0003-0.01% ... | 06/28/1988 |
| 4708748 | Method of making cold rolled dual-phase structure steel sheet having an excellent deep drawability A cold rolled dual-phase structure steel sheet having an excellent deep drawability is disclosed, which consists of ferrite phase and low temperature transformation product phase and comprises 0.001-0.008 wt % of C, not more than 1.0 wt % of Si, 0.05-1.8 ... | 11/24/1987 |
| 4678522 | Cold rolled steel sheet having excellent press formability and method for producing the same A cold rolled boron steel sheet having excellent stretchability, deep drawability, and second workability and method for producing the same, which comprises the steps of hot rolling a steel containing not more than 0.05% C by weight and, P and N in the re... | 07/07/1987 |
| 4661169 | Producing an iron-chromium-aluminum alloy with an adherent textured aluminum oxide surface A ferritic stainless steel alloy is provided which is hot workable and is resistant to thermal cyclic oxidation and scaling at elevated temperatures. The iron-chromium-aluminum alloy contains cerium, lanthanum and other rare earths and is suitable for for... | 04/28/1987 |
| 4648916 | Method of controlling cooling of hot-rolled steel sheet and system therefor In controlling the cooling of a hot-rolled steel sheet after hot rolling, a target value of a transformation rate required for obtaining mechanical properties ultimately expected from the hot-rolled steel plate is previously determined, a rate of gamma to... | 03/10/1987 |
| 4634573 | Steel for cold forging and method of making An improved steel for cold forging for machine structural use, particularly, case hardening steel, contents of Al, N and Nb are selected to satisfy a specific corelation therebetween, and the amounts of O and S are controlled. The steel is resistant to cr... | 01/06/1987 |
| 4627881 | Cold rolled steel sheet having excellent press formability and method for producing the same A cold rolled steel sheet having excellent stretchability, deep drawability, and secondary workability, and a method for producing the same, which comprises the steps of hot rolling an Al-killed steel containing not more than 0.0025%N by weight, not more ... | 12/09/1986 |
| 4617069 | Method for improving the immunity to temperature changes of cast iron containing lamellar graphite A method is disclosed for improving the immunity to temperature changes of cast iron containing lamellar graphite. The structure of the cast iron melt is suitably adjusted by means of carbide forming agents, to wit chromium and/or molybdenum and an anneal... | 10/14/1986 |
| 4615749 | Cold rolled dual-phase structure steel sheet having an excellent deep drawability and a method of manufacturing the same A cold rolled dual-phase structure steel sheet having an excellent deep drawability is disclosed, which consists of ferrite phase and low temperature transformation product phase and comprises 0.001-0.008 wt % of C, not more than 1.0 wt % of Si, 0.05-1.8 ... | 10/07/1986 |
| 4609412 | Al-killed cold-rolled steel sheet with excellent demagnetization characteristics and process for producing the same, and shadow mask and color television using the same An Al-killed cold-rolled steel sheet with excellent demagnetization characteristics is provided which is substantially consisted of 0.005% or less C; from 0.05 to 0.50% Mn; 0.010% or less S; from 0.01 to 0.08% Sol.Al; 0.0050% or less N; wherein Mn %/S %à£... | 09/02/1986 |
| 4596608 | Method of manufacturing of steel sheet for easy open end can with superior openability A method for manufacturing steel sheet for easy open end cans superior in openability comprising an improvement in the conventional process which includes the steps of hot rolling, first cold rolling, annealing and second cold rolling. The improvement res... | 06/24/1986 |
