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| Number | Title | Issue Date |
| 6696016 | High-chromium containing ferrite based heat resistant steel A high-Cr containing ferrite heat resistant steel having not only an excellent long-term creep strength at a high temperature exceeding 650° C., but also an improved oxidation resistance, which is based on ferritic phase and contains 13% by weight or mor... | 02/24/2004 |
| 6569813 | Method of producing oxide superconductive composite material A method of producing a composite material of a bismuth 2212 phase and a metallic substrate, wherein the first and second baking are conducted as an isothermal heat treatment. According to this process, temperature control is easy, high productivity is ob... | 05/27/2003 |
| 6464807 | Production method of ultra fine grain steel A method of producing a ultra fine grain steel made of ferrite having a mean grain size of not larger that 3 μm as the base phase, after ingoting raw materials, by austenitizing the ingot by heating it to a temperature of at least an Ac 3 point, then, ap... | 10/15/2002 |
| 6457349 | Method of testing hardness of micro region A testing method is provided for determining the hardness of a micro region, using indentation curves indicating relations between observed penetration depths and indenting forces when an arbitrary shaped indenter is pushed into standard samples of plural... | 10/01/2002 |
| 6383286 | Method of making semiconductor super-atom and aggregate thereof The present invention probides a novel method for fabricating a semiconductor super-atom and an aggregate thereof, which allows the formation of a semiconductor nano-structure with a diameter in the order of 10 nm, which is meant for constituting a core, ... | 05/07/2002 |
| 6362712 | Uniform magnetic force generating magnet Magnets comprising main magnets formed by arranging a single main magnet or plural main magnets, and auxiliary magnets for uniformalizing the magnetic force of the main magnets in a predetermined space. The magnets uniformalize the magnetic force in space... | 03/26/2002 |
| 6340657 | Method for producing thin films of ribbon-like oxide high-temperature superconductor A simple and low-cost method for producing a thin film of ribbon-like oxide high-temperature (high-Tc) superconductor, which comprises placing a solid starting material for the oxide high-temperature superconductor on a substrate and heating it at a tempe... | 01/22/2002 |
| 6332905 | High-strength metal solidified material and acid steel and manufacturing methods thereof The invention according to the present application provides a high strength solidification body by solidifying a starting metallic powder of iron and the like by means of plastic working using hydrostatic pressing, which is, for instance, a high strength ... | 12/25/2001 |
| 6299704 | Heat resisting steel containing a ferrite or tempered martensite structure Heat resisting steel containing a ferrite or tempered martensite structure, in which intermetallic compound phases having a L10 or L12 ordered structure are uniformly precipitated in ferrite or tempered martensite grains.... | 10/09/2001 |
| 6297473 | Arc welding method In order to provide a welding system capable of freely controlling dispersion and concentration of arc heat input at a groove face of base material, and ensure melting of the base material while restraining excessive weld heat input, in arc welding using ... | 10/02/2001 |
| 6287397 | High strength phosphorus-containing steel and method for producing the same A high strength phosphorus-containing steel having fine texture free from the problem of embrittlement by positively using the presence of P, which is a carbon steel having an average ferritic grain diameter of 3 μm or less and containing from 0.04 to 0.... | 09/11/2001 |
| 6175053 | Wound dressing material containing silk fibroin and sericin as main component and method for preparing same There is provided a novel wound dressing material which has biocompatibility and infection controllability as essential properties required for such a material, especially excellent flexibility and water absorption properties, thereby accelerating smooth ... | 01/16/2001 |
| 6129791 | Oxides dispersion steel and making process thereof In carbon steel, oxides with grain diameter of 1 μm or less and with grain spacing of 6 μm or less are dispersed to suppress growth of γ grains by heating at γ region temperature.... | 10/10/2000 |
