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| Number | Title | Issue Date |
| 7811392 | Suppression method of radionuclide deposition on reactor component of nuclear power plant and ferrite film formation apparatus It is an object of the present invention to efficiently suppress radionuclide deposition on a reactor component of nuclear power plant. Radionuclide deposition on the surface of a metallic reactor component of nuclear power plant is suppressed by forming a ferrite f... | 10/12/2010 |
| 7361238 | Annealing furnace purging and oxidation system and method In an improved annealing furnace for laminations having a purge vestibule and an oxidation section, atmosphere injection tubes with atmosphere injection jets are provided in the oxidation section at a conveyor directly beneath trays conveying the laminations. Atmosp... | 04/22/2008 |
| 7284461 | Colored razor blades Colored razor blades are provided. Methods for manufacturing such blades are also provided, including methods involving subjecting a blade material to a hardening process; and, during the hardening process, oxidizing the blade material to form an oxide layer on the ... | 10/23/2007 |
| 7165418 | Absorption refrigerator and production method thereof An absorption refrigerator includes a high temperature regenerator for heating a water solution including a halogen compound to generate steam. An oxide film having thickness of 0.02–5.0 μm, one of the colors blue, purple and gray, or a hydroxyl group is formed o... | 01/23/2007 |
| 7132018 | Magnetic core insulation Disclosed herein is an insulating material between adjacent metal layers of a soft magnetic core, and a process for forming this insulating material. The insulating material is composed of the native metal oxides of the metallic core material. ... | 11/07/2006 |
| 7090729 | Outer ring member for constant velocity joint and method of manufacturing the member An outer ring member for a constant velocity joint is manufactured. An intermediate preformed product having a cup section with an incomplete shape is formed by pressing a large diameter section without applying a low temperature annealing treatment and a lubricatin... | 08/15/2006 |
| 7077919 | Magnetic core insulation Disclosed herein is an insulating material between adjacent metal layers of a soft magnetic core, and a process for forming this insulating material. The insulating material is composed of the native metal oxides of the metallic core material. ... | 07/18/2006 |
| 7045024 | Ferrate conversion coatings for metal substrates A method employing oxide film conversion coatings prepared using ferrate (VI) as the oxidizing agent is disclosed. Metal substrates or surfaces, such as aluminum, aluminum alloys or other metals, are contacted with an aqueous solution comprising ferrate (VI) anions ... | 05/16/2006 |
| 7033843 | Semiconductor manufacturing method and semiconductor manufacturing apparatus A semiconductor manufacturing method whereby reactive gas processing such as selective epitaxial growth can be carried out with high precision by correctly adjusting conditions during processing is performed by a semiconductor manufacturing apparatus which can restr... | 04/25/2006 |
| 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 |
| 6899769 | Composition and method for metal coloring process This invention is a method for forming a chemical conversion coating on ferrous metal substrates, the chemical solutions used in the coating and the articles coated thereby. By modifying and combining the features of two existing, but heretofore unrelated, coating t... | 05/31/2005 |
| 6899956 | Metal coloring process and solutions therefor This invention includes improvements to a method for forming a chemical conversion coating on ferrous metal substrates, to the chemical solutions used in the coating and to the articles coated thereby. A first oxidation applies a molecular iron/oxygen-enriched inter... | 05/31/2005 |
| 6848832 | Surface-treated rolling bearing and manufacturing method thereof In a rolling bearing put under a working circumstance in which water tends to intrude into lubricants, it has been known such a phenomenon that hydrogen ions formed by decomposition of the lubricants are adsorbed to raceway surfaces and accumulated as hydrogen atoms... | 02/01/2005 |
| 6846367 | Heat-treating method for improving wear-resistance and corrosion-resistance of chromium-plated steel substrate Disclosed is a method for improving the wear- and corrosion-resistance of a chromium-plated steel substrate by heat-treating the chromium-plated steel substrate under optimum conditions to inhibit a drop in corrosion-resistance of a steel substrate due to fine crack... | 01/25/2005 |
| 6695931 | Composition and method for metal coloring process This invention is a method for forming a chemical conversion coating on ferrous metal substrates, the chemical solutions used in the coating and the articles coated thereby. By modifying and combining the features of two existing, but heretofore unrelated... | 02/24/2004 |
| 6623541 | Sintered rare earth magnet and making method A sintered rare earth magnet consisting essentially of 20-30% by weight of R (wherein R is Sm or a mixture of Sm and another rare earth element), 10-45% by weight of Fe, 1-10% by weight of Cu, 0.5-5% by weight of Zr, and the balance of Co has on its surfa... | 09/23/2003 |
| 6585832 | Method to prevent specks or hairline cracks in, and premature failure of, airplane cylinder barrels The present invention relates to an improved method for the manufacture of aircraft engine cylinder barrels to prevent their premature failure due to hairline cracks or specks thought to be caused by caustic stress corrosion cracking during black oxide tr... | 07/01/2003 |
| 6576346 | Composition and method for metal coloring process This invention is a method for forming a chemical conversion coating on ferrous metal substrates, the chemical solutions used in the coating and the articles coated thereby. By modifying and combining the features of two existing, but heretofore unrelated... | 06/10/2003 |
| 6569263 | Corrosion protection There has been invented a chemically bonded phosphate corrosion protection material and process for application of the corrosion protection material for corrosion prevention. A slurry of iron oxide and phosphoric acid is used to contact a warm surface of ... | 05/27/2003 |
| 6531000 | Surface treated rolling bearing and manufacturing method thereof The present invention provides a rolling bearing in which an oxide layer of an iron/chromium oxide series is formed at a thickness of from 1 to 1000 nm to at least one of raceway surfaces of bearing rings or rolling contact surfaces of rolling elements an... | 03/11/2003 |
| 6527873 | Composition and method for metal coloring process This invention is a method for forming a chemical conversion coating on ferrous metal substrates, the chemical solutions used in the coating and the articles coated thereby. By modifying and combining the features of two existing, but heretofore unrelated... | 03/04/2003 |
| 6489043 | Iron aluminide fuel injector component An iron aluminide fuel injector component such as a nozzle, plunger or other part is manufactured from iron aluminide or includes an iron aluminide coating on at least a portion of a surface in contact with the fuel which passes through the fuel injector.... | 12/03/2002 |
| 6471788 | Ferrate conversion coatings for metal substrates A method employing oxide film conversion coatings prepared using ferrate (VI) as the oxidizing agent is disclosed. Metal substrates or surfaces, such as aluminum, aluminum alloys or other metals, are contacted with an aqueous solution comprising ferrate (... | 10/29/2002 |
| 6436202 | Process of treating a stainless steel matrix Heat resistant stainless steel may be treated in a low oxidizing atmosphere in a heat/soak-heat/soak sequence to deplete its surface of Ni and Cr which tend to catalyze coking of hydrocarbons in contact with the surface of the stainless steel, and enrich ... | 08/20/2002 |
| 6383297 | Method and device for joint oxydation and heat treatment of workpieces Disclosed is a method for joint oxydation and heat treatment of workpieces at temperatures ࣘ1300° in the treatment chamber of an oven containing a neutral or reactive gas in a temperature range above 570°. In order for the process to be reproducible a... | 05/07/2002 |
| 6312533 | Stainless steel material with excellent antibacterial property and process for producing the same The present invention provides a BA-finished stainless steel product having superior antibacterial properties and corrosion resistance and a method for producing the same. Specifically, after a stainless steel product is subjected to BA treatment, the sta... | 11/06/2001 |
| 6309476 | Composition and method for metal coloring process This invention is a method for forming a chemical conversion coating on ferrous metal substrates, the chemical solutions used in the coating and the articles coated thereby. By modifying and combining the features of two existing, but heretofore unrelated... | 10/30/2001 |
| 6284388 | Steel with electrically insulating hematite layer The present invention is directed to a method of forming an electrically insulating layer on a steel article such as a stack of electrical steel laminations or an individual, unstacked electrical steel lamination, comprising exposing the article to an oxi... | 09/04/2001 |
| 6277327 | Method for the anticorrosive treatment of waste plastics treating equipment This invention relates to equipment for treating the aforesaid waste plastics directly with supercritical water, and an object thereof is to provide a method for the anticorrosive treatment of waste plastics treating equipment which makes it possible to u... | 08/21/2001 |
| 6277214 | Protective iron oxide scale on heat-treated irons and steels The invention provides a process for the heat treatment of iron-based alloys, including irons and steels, such as carbon steels and low alloy steels, in a controlled oxidative environment, to modify the microstructure of the metal to obtain both improved ... | 08/21/2001 |
| 6277213 | Surface treatment of steel or a nickel alloy and treated steel or nickel alloy The invention relates to a process for the surface treatment of stainless steel and/or of a nickel alloy. It also relates to the use of such a process and to a stainless steel treated by the process or of a treated nickel alloy. It is envisaged that the t... | 08/21/2001 |
| 6231690 | Method of oxidizing inner surface of ferritic stainless pipe A method of oxidation treatment of the inner surface of a ferritic stainless steel pipe comprising feeding an oxidizing gas into steel pipe from one end thereof while moving the steel pipe in a pipe-length direction, and heating the pipe in a heating furn... | 05/15/2001 |
| 6221501 | Steel with electrically insulating hematite layer The present invention is directed to a method of forming an electrically insulating layer on a steel article such as a stack of electrical steel laminations or an individual, unstacked electrical steel lamination, comprising exposing the article to an oxi... | 04/24/2001 |
| 6220500 | Welding method for fluorine-passivated member for welding, fluorine-passivation method after being weld, and welded parts A welding method for materials to be welded which are subjected to fluoride passivation treatment, and a fluoride passivation retreatment method, wherein, when fluoride passivation retreatment is conducted after welding, there is no generation of particle... | 04/24/2001 |
| 6218027 | Steel material excellent in corrosion resistance and fabric using the same A steel suitable for a fabric with or without painting and has good corrosion resistance with reproducibility, even if the steel is composed mainly of ordinary carbon steel or low alloy steel, wherein the surface of the steel is coated with rust comprisin... | 04/17/2001 |
| 6150040 | Pure steam-related apparatus protected from fouling and method of manufacturing the same A pure steam-related apparatus, which is one of apparatus in the group of pure steam generators generating pure steam from purified water, pipelines for pure steam and sterilizers using pure steam, is protected from discoloration, so-called "fouling", to ... | 11/21/2000 |
| 6068712 | Steel products having superior weathering, method of producing the steel products, and method of forming weathering protective rust on steel product surfaces The invention provides a steel product having superior weathering which is coated with a rust layer containing 50 or more weight % of non-crystalline rust, a method of producing the steel product, and a method of forming weathering protective rust on a ma... | 05/30/2000 |
| 6051203 | Thin-walled monolithic metal oxide structures made from metals, and methods for manufacturing such structures Monolithic metal oxide structures, and processes for making such structures, are disclosed. The structures are obtained by heating a metal-containing structure having a plurality of surfaces in close proximity to one another in an oxidative atmosphere at ... | 04/18/2000 |
| 6045628 | Thin-walled monolithic metal oxide structures made from metals, and methods for manufacturing such structures Monolithic metal oxide structures, and processes for making such structures, are disclosed. The structures are obtained by heating a metal-containing structure having a plurality of surfaces in close proximity to one another in an oxidative atmosphere at ... | 04/04/2000 |
| 6033494 | Method of blackening a magnetic shield for use in a color CRT A method of blackening a magnetic shield for use in a color CRT (Cathode Ray Tube) is disclosed. A plurality of magnetic shield members are stacked with clamps inserted in their holes beforehand or with the intermediary of cut and raised portions or lugs ... | 03/07/2000 |
