| Patents for C23C 8 - Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals (10,951) |
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| 11/25/1999 | DE19752051C1 Producing dimensionally accurate components with nitrided or nitrocarburized surface layers, and resultant component |
| 11/24/1999 | EP0958397A1 Steel article having high hardness and improved toughness and process for forming the article |
| 11/24/1999 | EP0958396A1 Thin-walled monolithic metal oxide structures made from metals, and methods for manufacturing such structures |
| 11/23/1999 | US5989722 Reduced pressure device and method of making |
| 11/23/1999 | US5989363 Nitriding process and nitriding furnace therefor |
| 11/23/1999 | US5987731 Elongated superconductive member |
| 11/18/1999 | DE19821182A1 Metal building elements protection process |
| 11/16/1999 | US5986244 Metallic high temperature resistant material and a method of producing it |
| 11/16/1999 | US5985428 Layer with mixture of iron sulfide and iron nitride particles; wear and heat resistance |
| 11/16/1999 | US5985210 Nitriding steel |
| 11/16/1999 | US5985048 Heating surface in presence of circulating dry air, then in presence of static dry air at elevated pressure, oxidizing to remove exterior portion of enhanced oxide coating and expose coating having high ratio of chromium to iron |
| 11/16/1999 | US5985044 Forged, nitrided steel parts having a high fatigue limit and bending toughness, containing iron, carbon, manganese, aluminum, silicon, chromium, nitrogen, sulfur, phosphorus, limited vanadium as impurity |
| 11/11/1999 | DE19820152A1 Boundary layer containing nitrogen on components consisting of stainless steel, and method for producing such a boundary layer |
| 11/11/1999 | DE19819925A1 Verfahren zur Erzeugung einer Schutzschicht auf der inneren Oberfläche eines Kupferrohrs A method for generating a protective layer on the inner surface of a copper tube |
| 11/10/1999 | EP0955394A2 Process for producing a protective coating on the interior surface of a copper pipe |
| 11/04/1999 | WO1999055928A1 Low pressure carbonitriding method for metal alloy parts |
| 11/04/1999 | WO1999055921A1 Method for carburizing or carbonitriding metal parts |
| 11/04/1999 | DE19819042A1 Verfahren und Anlage zum Gasaufkohlen Method and apparatus for gas carburizing |
| 11/04/1999 | CA2324943A1 Method for carburizing or carbonitriding metal parts |
| 11/03/1999 | EP0953654A1 Process and apparatus for gas carburising |
| 11/02/1999 | US5976053 Method of manufacturing traction rollers for continuously variable transmissions and traction rollers resulting therefrom |
| 11/02/1999 | US5975912 Low temperature plasma-enhanced formation of integrated circuits |
| 10/28/1999 | WO1999054519A1 Method of producing oxide surface layers on metals and alloys |
| 10/28/1999 | DE19917625A1 Ferrous metal alloy, e.g. carbon steel, with high strength, high shaping capability and high cold workability |
| 10/21/1999 | DE19832404C1 Production of cyanide from nitrocarburised melts containing cyanate by electrolysis |
| 10/20/1999 | EP0950723A1 High bearing-strength steel parts and processes for the production thereof |
| 10/20/1999 | EP0950120A1 Process for the treatment of grain oriented silicon steel |
| 10/20/1999 | EP0950119A1 Process for the production of oriented-grain electrical steel sheet with high magnetic characteristics |
| 10/20/1999 | EP0950118A1 Process for the production of grain oriented silicon steel sheet |
| 10/20/1999 | CN1232090A Locally anticarbonitriding technique for carbonitriding piecework and gear heat treatment process |
| 10/19/1999 | US5970306 Method of manufacturing high temperature resistant shaped parts |
| 10/14/1999 | WO1999051794A1 Method for developing an enhanced oxide coating on a component formed from stainless steel or nickel alloy steel |
| 10/14/1999 | DE19911533A1 Piston ring especially for use with aluminum cylinder e.g. engine cylinder |
| 10/13/1999 | EP0949338A2 Fluidized bed process for the production of iron carbide |
| 10/12/1999 | US5965219 Misted deposition method with applied UV radiation |
| 10/12/1999 | US5964103 Absorption refrigerator and production method thereof |
| 10/07/1999 | DE19815233A1 Verfahren zur Vakuumaufkohlung unter Behandlungsgas A method for vacuum carburizing gas under treatment |
| 10/07/1999 | DE19815019A1 Aluminum nitride layer produced on an aluminum component by plasma nitriding |
| 10/07/1999 | DE19814451A1 Verfahren zur Wärmebehandlung von Werkstücken unter Behandlungsgas A method of heat treatment of workpieces under gas treatment |
| 10/06/1999 | EP0947600A2 Process for vacuum carburizing in a treatment furnace |
| 10/06/1999 | EP0947599A1 Method for heat treating workpieces with treating gas |
| 10/06/1999 | EP0946763A1 High strength deep drawing steel developed by reaction with ammonia |
| 10/06/1999 | EP0871803B1 PEROVSKITE WITH AO*(ABO3)n LAYER |
| 10/06/1999 | CN2341995Y Automatic controller for gas cement carbon furnace concentration of chemical heat treatment |
| 10/06/1999 | CN1230603A Plasma reinforcement technology for the surface of tantalum spinning jet |
| 10/05/1999 | US5962116 Copper strip or sheet with a brown cover layer and methods for its production |
| 10/05/1999 | US5962085 Misted precursor deposition apparatus and method with improved mist and mist flow |
| 10/05/1999 | US5961744 Grain oriented silicon steel sheet having low core loss and method of manufacturing same |
| 10/05/1999 | US5961158 Welded member and clean room |
| 09/30/1999 | DE19911962A1 Piston ring or compression ring for gasoline and diesel engines |
| 09/30/1999 | DE19831214A1 Verfahren und Anordnung zur Herstellung dünner Metallchalkogenid-Schichten Method and apparatus for producing thin metal chalcogenide layers |
| 09/29/1999 | EP0945526A1 Brass coloured coating having a coloration nitride layer |
| 09/23/1999 | WO1999048158A1 Method and arrangement for producing thin metal chalcogenide layers |
| 09/23/1999 | WO1999047725A1 Plastic component |
| 09/23/1999 | DE19811655A1 Aluminum-coated plastic component useful as a sliding seal especially in a vehicle hydraulic clutch disengaging system |
| 09/22/1999 | CN1229441A Titanium-base decoration member and method for curing the same |
| 09/21/1999 | US5954894 Having improved rolling contact fatigue resistance and fracture toughness realized by carburization of outer region of a steel core to form a hardened covering |
| 09/21/1999 | US5953969 Screwdriver, screwdriver bit or the like |
| 09/15/1999 | CN1045113C Laser modifying method of iron-carbon alloy surface Fuller carbon coating |
| 09/14/1999 | US5951787 Polishing surface of ferrite-based stainless steel; baking in inert gas to remove moisture; heat treating to form chromium oxide that is free from iron oxide on the outermost surface |
| 09/14/1999 | US5951772 For semiconductors, integrated circuits |
| 09/14/1999 | US5951275 Method for removing oily substances from metallic articles |
| 09/10/1999 | WO1999031291A3 Plasma boronizing |
| 09/09/1999 | DE19809409A1 Brass-colored coating for bath fittings, coverings or articles of daily use |
| 09/09/1999 | DE19809122A1 Coating for components made of gray cast iron or cast iron with spheroidal graphite, in particular, for forming tools, and method for producing such a coating |
| 09/07/1999 | US5948177 Collet metal treating process |
| 09/05/1999 | CA2264195A1 Brass-colored coating with color-imparting nitride layer |
| 09/01/1999 | EP0938940A1 A process and an apparatus for treating the surface of articles made of titanium and alloys thereof |
| 08/31/1999 | US5945737 Thin film or solder ball including a metal and an oxide, nitride, or carbide precipitate of an expandable or contractible element |
| 08/31/1999 | US5944919 Process for blackening surgical needles |
| 08/31/1999 | US5944917 Stainless steel for ozone added water and manufacturing method thereof |
| 08/31/1999 | US5944916 Method of heat treatment for steel |
| 08/25/1999 | CN1226935A Unidirectional electromagnetic steel sheet having excellent film characteristics and magnetic characteristics, its production method and decarburization annealing setup therefor |
| 08/25/1999 | CN1226610A Process and apparatus for heat treatment |
| 08/19/1999 | WO1999041018A1 Treating metallic machine parts |
| 08/18/1999 | CN2333715Y Device for titanium plate nitriding using general ion nitriding apparatus |
| 08/17/1999 | US5939020 Chemical switch for detection of chemical components |
| 08/17/1999 | CA2054166C Process for producing brown covering layers on copper |
| 08/10/1999 | US5935533 Hermetic sealed composite |
| 08/03/1999 | US5932492 Methods for forming alumina masking |
| 07/28/1999 | EP0931849A2 Process suitable to give a direct protection against the wear corrosion of metallic pieces |
| 07/28/1999 | EP0931848A1 Titanium-base decoration member and method for curing the same |
| 07/28/1999 | EP0931173A1 Case-hardened stainless steel bearing component and process for manufacturing the same |
| 07/28/1999 | CN1044393C Nickel alloy products with their surface nitrided and hardened |
| 07/27/1999 | US5928985 Copper catalysts |
| 07/27/1999 | US5928786 Monocrystalline silicon wafer and method of thermally oxidizing a surface thereof |
| 07/27/1999 | US5928604 Automated system for carburizing a component |
| 07/22/1999 | WO1999029435A3 Modification of surfaces in order to increase surface tension |
| 07/22/1999 | WO1999027147A3 Wear-resistant, mechanically highly stressed and low-friction boundary coating construction for titanium or the alloys thereof and a method for producing the same |
| 07/15/1999 | WO1999035297A1 Laser phase transformation and ion implantation in metals |
| 07/14/1999 | EP0928836A1 Steel products having superior weathering, method of producing the steel products, and method of forming weathering protective rust on steel product surfaces |
| 07/13/1999 | CA1340651C Magnetron sputtering apparatus and process |
| 07/08/1999 | WO1999034027A1 Welding technique for forming passive chromium oxide film in weld and gas feed system for welding |
| 07/08/1999 | WO1999034023A1 Continuous annealing furnace, rolling bearing, annealing method, and method of manufacturing inner and outer races of deeply groove ball bearing |
| 07/08/1999 | CA2256798A1 Steel products having superior weathering, method of producing the steel products, and method of forming weathering protective rust on steel product surfaces |
| 07/07/1999 | CN1222203A Thin-walled monolithic metal oxide structures made from metals, and methods for mfg. such structures |
| 07/07/1999 | CN1221805A Method for forming noble metal oxides and structures formed thereof |
| 07/07/1999 | CN1221804A Ion chemical heat treatment appts. |
| 06/30/1999 | EP0926257A1 Pre-oxidation method |
| 06/30/1999 | EP0926250A1 Unidirectional electromagnetic steel sheet having excellent film characteristics and magnetic characteristics, its production method and decarburization annealing setup therefor |