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| Number | Title | Issue Date |
| 5405463 | Continuous annealing process of producing cold rolled mild steel sheet excellent in deep drawability and aging resistibility Deep drawability and aging resistibility as required are imparted to cold rolled steel sheet by controlling the amount of C, starting temperatures of rapid cooling and cooling rate in a proposed continuous annealing process.... | 04/11/1995 |
| 5224856 | Surface combustion burner A surface combustion burner of a plural layer structure made by laminating a layer of a burning resisting material such as a ceramic material and a supporting layer such as a metal fiber mat. There are provided a first layer (1) made of a material having ... | 07/06/1993 |
| 5195344 | Warm rolling facility for steel strip coils The present invention relates to a warm rolling facility suited to rolling of brittle strip coils such as high Si steels. The facility is provided with a rolling machine, tension reels disposed respectively at an inlet side and an outlet side of the rolli... | 03/23/1993 |
| 5161965 | Surface combustion burner A surface combustion burner of a two-layer structure in which a layer of a burning resisting material such as a ceramic material and a supporting layer such as a metal fiber mat are arranged one upon another and joined. There are provided a first layer (1... | 11/10/1992 |
| 5116571 | Chromoum heat-resistant steel excellent in toughness and having high cracking resistance and high creep strength in welded joint A chromium heat-resistant steel excellent in toughness and having a high cracking resistance and a high creep strength when said steel is utilized to form a welded joint, said steel consisting essentially of: ______________________________________ ... | 05/26/1992 |
| 5094764 | Method for supplying a lubricating oil composition A lubricating oil composition containing as essential ingredients a lubricating oil component having a melting point of not higher than 100° C., and one or more water-soluble dispersants selected from the group consisting of anionic polymeric dispersants... | 03/10/1992 |
| 5093204 | Vibration-damping composite sheet steel A vibration-damping composite sheet steel made by sandwiching a viscoelastic material between two steel sheets. A rust proofing coating which generates no gaseous matter is formed on one surface of each of the steel sheets which is contacted with the visc... | 03/03/1992 |
| 5089031 | Coal gasification apparatus using coal powder A coal gasification apparatus using coal powder supplies coal powder, along with oxygen or air and steam, into a reaction chamber, supplies the char produced in the reaction chamber or the char and coal, along with oxygen or air and steam into a combustio... | 02/18/1992 |
| 5082510 | Method for producing non-oriented steel sheets A method for producing non-oriented electrical steel sheets comprising the steps of: making steel ingots comprising contents of: 0.01 wt % and less C, 0.003 wt % and less N, 0.1 to 1.0 wt % Mn and 1.7 wt % and less Si; Si and Al satisfying the formulas of: (Al... | 01/21/1992 |
| 5078809 | Method for producing cold-rolled steel sheet A method for producing cold-rolled steel sheets which comprises the steps of: producing slabs containing 0.001-0.003 wt. % C, 0.004 wt. % or less N and 0.03-0.20 wt. % P, providing that P(wt. %)×N(wt. %)ࣘ3×10-4 wt. % is satisfied; hot-rolli... | 01/07/1992 |
| 5064982 | Electric resistance seam welding method An electric resistance seam welding method for a hard-to-weld steel sheet is disclosed which prevents the occurrence of flashes. The steel sheet has metal harder than tin and an intermetallic compound as coating layers, the sheet thickness of the steel sh... | 11/12/1991 |
| 5035847 | Mold for slip casting A mold for slip casting comprising a compact formed out of a mixture having an organic matter and powders, the organic matter being capable of being extracted by supercritical fluid and the powders being incapable of being extracted by the supercritical f... | 07/30/1991 |
| 5009871 | Method of removing mercury in exhaust gases from a waster incinerator A method of removing mercury from the exhaust gases of a waste incinerator. The method is applied to a gas-liquid contact-type smoke cleaner so that the exhaust gases emitted from the waste incinerator are washed with a washing liquid to which an oxidizin... | 04/23/1991 |
| 5006181 | Lubricating method for warm rolling of high silicon steels The present invention relates to a lubricating method for warm rolling of high Si steel, where warm rolling is carried out on the high Si steel at temperatures between 200° and 600° C., while a lubricant is sprayed to working rolls or assistant rolls, t... | 04/09/1991 |
| 5000679 | Burner with a cylindrical body A burner for directly flaming steel making materials to accomplish reduction without oxidation, wherein the burner comprises a plurality of combusion air outlets spaced circumferentially of the inner wall of a tubular burner tile, and fuel gas outlets dis... | 03/19/1991 |
| 4993939 | Burner with a cylindrical body A burner for directly flaming steel making materials to accomplish reduction without oxidation, wherein the burner comprises a plurality of combustion air outlets spaced circumferentially of the inner wall of a tubular burner tile, and fuel gas outlets di... | 02/19/1991 |
| 4988035 | Method of liquid phase diffusion bonding of metal bodies Insert 1 comprises thin substrate made by cold-rolling, and two bonding alloy layers formed by plating on the upper and lower surfaces of substrate, respectively. Both layers is extremely thin, and is made of an alloy having a melting point lower than tha... | 01/29/1991 |
| 4987113 | Preparation of coal liquefaction catalyst When low-quality iron ore is used as a coal liquefaction catalyst, in order to improve its catalytic activity it is subjected to one or a combination of reduction, heat-treatment, or washing with or immersion in water for a long period of time so as to re... | 01/22/1991 |
| 4986341 | Process for making non-oriented high silicon steel sheet The present invention relates to a process for making non-oriented high Si steel sheet without problems during the sequence from the step of making molten steel to the step of rolling to final sheet thickness. An ingot (or a continuously cast piece) of hi... | 01/22/1991 |
| 4986910 | Apparatus for dehydrating sludge This present invention relates to a method of dehydrating a wet sludge. The wet sludge which is subjected to a preliminary dehydration by gravity dehydration or the like, is pelletized by a pelletizer, and obtained pellets of the sludge are subjected to c... | 01/22/1991 |
| 4985158 | Lubricating oil composition and method for supplying same A lubricating oil composition containing as essential ingredients a lubricating oil component having a melting point of not higher than 100° C., and one or more water-soluble dispersants selected from the group consisting of anionic polymeric dispersants... | 01/15/1991 |
| 4985075 | Method for manufacturing chromium-bearing pig iron A method for manufacturing a chromium-bearing pig iron comprises the steps of charging cold bond pellets, iron ore and coke lumps into a blast furnace from above and blowing a gas containing more than 50% oxygen therein and tuyere nose flame temperature c... | 01/15/1991 |
| 4984829 | Screw coupling joint A screw coupling joint having a sealing portion between an outer circumference formed in convex in an axial direction of the coupling joint at the end of the male screw portion and an inner circumference formed in taper at an inner part of the female scre... | 01/15/1991 |
| 4981519 | Hydraulic hardening material and method of manufacturing the same The invention provides a method of manufacturing a hydraulic hardening material having the steps of milling vitreous blast furnace slag and classifying the milled slag to provide slag powder having a blaine specific surface area of 6,000 to 12,000 cm... | 01/01/1991 |
| 4971551 | Burner with a cylindrical body A burner for directly flaming steel making materials to accomplish reduction without oxidation, wherein the burner comprises a plurality of combustion air outlets spaced circumferentially of the inner wall of a tubular burner tile, and fuel gas outlets di... | 11/20/1990 |
| 4971740 | Method for manufacturing a sintered body of silicon nitride A method for manufacturing a sintered body is provided, comprising the steps of dispersing powdery silicon nitride and a sintering assistant into a first dispersion medium composed mainly of substance capable of being extracted by supercritical fluid to f... | 11/20/1990 |
| 4971553 | Burner with a cylindrical body A burner for directly flaming steel making materials to accomplish reduction without oxidation, wherein the burner comprises a plurality of combustion air outlets spaced circumferentially of the inner wall of a tubular burner tile, and fuel gas outlets di... | 11/20/1990 |
| 4971552 | Burner A burner for directly flaming steel making materials to accomplish reduction without oxidation, wherein the burner comprises a plurality of combustion air outlets spaced circumferentially of the inner wall of a tubular burner tile, and fuel gas outlets di... | 11/20/1990 |
| 4970011 | Lubricating oil useful in the rolling of metal and a method for supplying the same A lubricating oil composition containing as essential ingredients a lubricating oil component having a melting point of not higher than 100° C., and one or more water-soluble dispersants selected from the group consisting of anionic polymeric dispersants... | 11/13/1990 |
| 4970126 | Highly corrosion-resistant, multi-layer coated steel sheets This invention relates to a highly corrosion-resistant, multi-layer coated steel sheet, and includes an undercoat film obtained by galvanization or zinc-alloy plating and a chromate coated film thereon, on which a resin-composition film is further applied... | 11/13/1990 |
| 4969815 | Burner A burner for directly flaming steel making materials to accomplish reduction without oxidation, wherein the burner comprises a plurality of combustion air outlets spaced circumferentially of the inner wall of a tubular burner tile, and fuel gas outlets di... | 11/13/1990 |
| 4957064 | Offshore fish cage for farming fish An offshore fish cage for farming fish comprises a polygonal frame composed of a multiplicity of frame elements. An upper net is hung down from the polygonal frame and is slackened enough so that it has a length of slack sufficient to cover up and down mo... | 09/18/1990 |
| 4948422 | Method of manufacturing superfine magnetic metal powder In the present invention, reaction is carried out between hydrogen gas and a metal halide vapor while supplying to the reacting region an active gas whose reactivity with the metal halide vapor is higher than the reactivity of the hydrogen gas with the me... | 08/14/1990 |
| 4943403 | Method for molding a pulverulent material There is disclosed a method for eliminating an organic dispersion medium from a molded product obtained by plasticizing-molding or casting-molding of metallic and/or ceramic powders wherein the elimination is by extraction by liquid carbon dioxide at a te... | 07/24/1990 |
| 4938049 | Warm rolling method for high silicon steel strips The present invention relates to a warm rolling method for high Si steel strips, in which the steel strip is connected at both ends with leader strips which are excellent in cold or warm workability, and the ends of the leader strips are connected to tens... | 07/03/1990 |
| 4931238 | Method for manufacturing a sintered body with high density Method for manufacturing a sintered body with high density comprises: turning first powder into a first slurry by dispersing the first powder in a first dispersion medium composed mainly of substances capable of being extracted by supercritical fluid and ... | 06/05/1990 |
| 4927600 | Method for molding of powders The invention is concerned with the method of compression molding a metallic or ceramic powders. The method includes the step of maintaining a negative pressure within a first mold of noncompactable powders for intimately contacting on its inner surface a... | 05/22/1990 |
| 4927457 | Method of manufacturing low carbon ferro-chromium Ores including oxides of Cr and Fe and melted by means of a furnace, thereby forming molten metal. The molten metal is poured from the furnace into a ladle. A reducing agent, such as SiCr, is added to the molten metal in the ladle. Then, an oxidizing gas ... | 05/22/1990 |
| 4926023 | High-speed rotative arc welding device This invention relates to a rotational arc welding machine that gives a rotational circular motion to arc generated from an electrode. The machine supports rotatably an electrode (20) at a predetermined distance (d) from the center of a disc (25) which ma... | 05/15/1990 |
| 4917727 | Method of operating a blast furnace According to a method of operating a blast furnace, pure oxygen, pulverized coal, and a temperature control gas which substantially does not contain nitrogen are blown from tuyeres. A preheating gas which substantially does not contain nitrogen is blown f... | 04/17/1990 |
