| 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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| 03/17/1998 | US5728328 Method of molding a product having low gloss surface |
| 03/10/1998 | US5725932 Ceramic-based substrate for coating diamond and method for preparing substrate for coating |
| 03/10/1998 | US5725907 Metal material formed with fluorocarbon film, process for preparing the material and apparatus made with use of the material |
| 03/10/1998 | US5725740 Eliminating free exposed titanium from an edge of a substrate having sequentially sputtered layers of titanium and titanium nitride thereon |
| 03/10/1998 | US5725682 Brazing method |
| 03/04/1998 | EP0826789A1 Modification of oxide film electrical conductivity to maintain low corrosion potential in high-temperature water |
| 03/03/1998 | US5723535 Pastes for the coating of substrates, methods for manufacturing them and their use |
| 03/03/1998 | CA2052793C Combined plasma and gamma radiation polymerization method for modifying surfaces |
| 02/26/1998 | WO1998007894A1 Method for making parts usable in a fuel environment |
| 02/25/1998 | EP0825274A2 Gas-carburizing process and apparatus |
| 02/25/1998 | CN1037534C Alloy with ultrafine crystal grains excellent in corrosion resistance |
| 02/19/1998 | DE19734901A1 Konstruktionsstahl und unter hohem Oberflächendruck verwendete Stahlbauteile Structural steel and steel components used under high surface pressure |
| 02/11/1998 | EP0822995A1 Modification of surfaces of polymers, metal or ceramic |
| 02/11/1998 | EP0822875A1 Method of manufacturing high temperature resistant shaped parts |
| 02/11/1998 | CN1172918A High fatigue intensity gear |
| 02/10/1998 | US5717186 Method and device for controlling the electric current density across a workpiece during heat treatment in a plasma |
| 02/10/1998 | US5716713 Insulated metallized substrate; thermoconductivity |
| 02/03/1998 | US5714016 Gear for wheel speed detection and method of manufacturing the same |
| 02/03/1998 | US5714015 Ferritic nitrocarburization process for steel balls |
| 02/03/1998 | CA2142765C Inorganic insulating member |
| 01/29/1998 | WO1998003698A1 Method of improving the resistance to cracking in components composed of nickel-based and iron-based materials |
| 01/29/1998 | WO1998003693A1 Titanium-base decoration member and method for curing the same |
| 01/29/1998 | DE19729872A1 Verfahren und Vorrichtung zur Plasmaaufkohlung eines metallischen Werkstückes Method and apparatus for plasma carburization of a metallic workpiece |
| 01/28/1998 | EP0820636A1 METHOD FOR PRODUCING A SEMICONDUCTOR DEVICE HAVING A SEMICONDUCTOR LAYER OF SiC |
| 01/28/1998 | EP0820530A1 Screwdriver, screwdriver bit or similar device |
| 01/27/1998 | US5711811 Method and equipment for growing thin films |
| 01/22/1998 | WO1998002595A1 Surface oxidation of a titanium or titanium alloy article |
| 01/22/1998 | DE19629272A1 Methode zur Verbesserung des Widerstandes gegen Rißwachstum von Bauteilen aus Nickelbasis und Eisenbasis Werkstoffen Method to improve the resistance to crack growth components from nickel-based and iron-based materials |
| 01/22/1998 | CA2260917A1 Surface oxidation of a titanium or titanium alloy article |
| 01/21/1998 | CN1170772A Process for blackening surgical needles |
| 01/15/1998 | WO1998001597A1 Surface treatment of rolling element bearing steel |
| 01/15/1998 | CA2260053A1 Surface treatment of rolling element bearing steel |
| 01/14/1998 | EP0818555A1 Method and equipment for vacuum carburization and products of carburization |
| 01/14/1998 | EP0818546A1 High fatigue strength gear |
| 01/14/1998 | CN1169876A Process for cleaning surgical needles |
| 01/13/1998 | US5707460 Method of producing parts having improved wear, fatigue and corrosion resistance from medium alloy, low carbon steel and parts obtained therefrom |
| 01/08/1998 | DE19626833A1 Case nitriding stainless steel with controlled stabiliser contents |
| 01/06/1998 | US5704994 Method of case-hardening shaped object |
| 12/31/1997 | CN1169136A Thin walled monolithic iron oxide structures made from steel, and method for mfg. same |
| 12/30/1997 | US5702540 Vacuum carburizing method and device, and carburized products |
| 12/24/1997 | WO1997048834A1 Method for forming oxidation-passive layer, fluid-contacting part, and fluid feed/discharge system |
| 12/24/1997 | CN1168420A Process for passivating surgical needles |
| 12/23/1997 | US5699855 Forming hydroxide film on surface of cooled fluid and refrigerant passageways by reacting aluminum alloy with sodium hydroxide solution; corrosion resistance |
| 12/17/1997 | EP0812929A1 Process of nitriding and/or carbonitriding metallic workpieces |
| 12/16/1997 | US5698159 Long-life carburizing bearing steel |
| 12/16/1997 | US5697997 Using gas discharge plasma including conveying the implants to a vaccum chamber, treating with inert gas plasma to remov existing contamination and oxide layers, then treating with oxidizing plasma in closed controlled space |
| 12/11/1997 | WO1997046744A1 Process and device to compensate for fluctuations in atmospheric pressure during thermal oxidation processes |
| 12/10/1997 | EP0811697A2 Method and apparatus for carburizing, quenching and tempering |
| 12/09/1997 | US5695827 Exposing titanium aluminide specimen to ion beam to implant dose of elemental species, forming alloy near surface |
| 12/03/1997 | EP0810295A1 Stainless steel for ozone added water and manufacturing method thereof |
| 11/27/1997 | DE19620652A1 Heat treating, especially carburising, workpieces |
| 11/26/1997 | EP0808914A1 Member for use in contact with molten nonferrous metals |
| 11/20/1997 | DE19612692C1 Two=stage dry and wet thermal oxidation of silicon carbide surface |
| 11/12/1997 | EP0806551A2 Manufacturing process for nitrided bimetallic valve |
| 11/11/1997 | CA2056943C Substrate of improved plasma sprayed surface morphology |
| 11/06/1997 | WO1997041274A1 Thin-walled monolithic metal oxide structures made from metals, and methods for manufacturing such structures |
| 11/06/1997 | CA2252812A1 Thin-walled monolithic metal oxide structures made from metals, and methods for manufacturing such structures |
| 11/04/1997 | US5683521 Reducing thickness of oxide film by electropolishing; low temperature annealing |
| 11/04/1997 | US5683072 Thin film forming equipment |
| 10/30/1997 | WO1997040205A1 Lubricated boride surfaces |
| 10/30/1997 | WO1997039889A1 Ferritic nitrocarburization process for steel balls |
| 10/29/1997 | CN1163581A Pulsed ion beam assisted deposition |
| 10/29/1997 | CN1163320A Method for sulfur-nitrogen Co-cementing |
| 10/29/1997 | CN1163319A Direct decomposition type carburizing technology |
| 10/21/1997 | US5679411 Method for producing a corrosion and wear resistant coating on iron materials |
| 10/15/1997 | EP0801142A2 Treatment method of a metallic substrate, metallic substrate thereby obtained and his applications |
| 10/14/1997 | US5676769 Treating material is pretreated to a preferential temperature in carburization atomosphere supplied with hydrocarbon and oxidizing gas then reheating to a specific temperature, laminar flow oil quenching and hardening |
| 10/09/1997 | WO1997037050A1 Ti-Al-BASE ALLOY HAVING EXCELLENT OXIDATION RESISTANCE AND PROCESS FOR PREPARING THE SAME |
| 10/08/1997 | EP0799068A1 Combined plasma and gamma radiation polymerization method for modifying surfaces |
| 10/08/1997 | CN1161437A Absorption refrigerator and prodn. method thereof |
| 10/08/1997 | CN1161384A Tech. for surface modification to easy-wear parts of machines for drilling or oil prodn. used in oil field |
| 10/07/1997 | US5674564 Alumina-coated sintered body |
| 10/02/1997 | WO1997036019A1 Method for color development of metallic titanium, and black titanium and colored titanium prepared by said method |
| 10/02/1997 | WO1997036018A1 Titanium or titanium alloy member and surface treatment method therefor |
| 10/02/1997 | DE19619254C1 Masking unit and corresponding method |
| 10/01/1997 | EP0798769A2 Dielectric layers for semiconductors |
| 10/01/1997 | EP0798398A2 Process for passivating surgical needles |
| 10/01/1997 | EP0798397A2 Process for cleaning surgical needles |
| 10/01/1997 | EP0798396A2 Process for blackening surgical needles |
| 10/01/1997 | EP0797838A1 Method and apparatus for plasma processing |
| 10/01/1997 | EP0797631A1 Artificial patina |
| 10/01/1997 | CN1160774A Method of carburizing austenitic stainless and austenitic stainless products obtained thereby |
| 09/30/1997 | US5672436 Titanium article having oxidation resistant surface consisting of titanium aluminide layer formed by vapor deposition of aluminum followed by oxidation |
| 09/30/1997 | US5672394 Electrodes of improved service life |
| 09/30/1997 | US5672014 Rolling bearings |
| 09/27/1997 | CA2201011A1 Process for cleaning surgical needles |
| 09/27/1997 | CA2201002A1 Process for passivating surgical needles |
| 09/27/1997 | CA2200995A1 Process for blackening surgical needles |
| 09/23/1997 | US5669988 Forming hard outer layer for improved durability, nitriding, carbonitriding, heat treatment |
| 09/17/1997 | EP0795621A1 Method for nitriding surface of aluminum material and assistant for nitriding |
| 09/17/1997 | CN1159487A Spring having high nitrided properties and method for manufacturing the same |
| 09/16/1997 | US5667133 Oxidizing with a gas mixture contains oxygen gas and inert gas |
| 09/12/1997 | WO1997033013A1 Misted precursor deposition apparatus and method with improved mist and mist flow |
| 09/11/1997 | DE19708781A1 Iron@ castings with spheroidal graphite for car differential gear unit production |
| 09/10/1997 | EP0794263A1 Method for producing a protective atmosphere for heat treatment furnace and heat treatment apparatus |
| 09/10/1997 | CN1158909A Metal surface sulfurizing treatment method |
| 09/10/1997 | CN1158901A Process of carburizing sponge iron |
| 09/09/1997 | US5665431 Titanium carbonitride coated stratified substrate and cutting inserts made from the same |
| 09/09/1997 | US5665179 Process for producing a coil spring |
| 09/02/1997 | US5662573 Metal inking roll for use in flexographic printing |