| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 148222000 | Utilizing ionized gas (e.g., plasma, etc.) or electron arc or beam | 13 |
| 20090032143 | ELECTRON BEAM ENHANCED NITRIDING SYSTEM - An electron beam enhanced nitriding system that passes a high-energy electron beam through nitrogen gas to form a low electron temperature plasma capable of delivering nitrogen ions and radicals to a substrate to be nitrided. The substrate can be mounted on an electrode, and the substrate can be biased and heated. | 02-05-2009 |
| 20090266449 | METHOD OF CARBURIZING AND QUENCHING A STEEL MEMBER - A method of carburizing and quenching a steel member includes: a reduced pressure carburization step in which a steel member is contacted with carburization gas under reduced pressure, a slow cooling step in which the steel member is then slowly cooled in a cooling gas, and a quenching step of heating a selected portion of the cooled steel member using high-density energy and subsequently subjecting the selected portion to rapid cooling. The steel member subjected to the low-pressure carburization step includes a first portion in which a diffusion rate of carbon taken therein during carburization is high because of its shape and a second portion in which the diffusion rate of carbon is lower than that of the first portion. The reduced-pressure carburization step is controlled to give a carbon concentration at the surface of the first portion in a range of 0.65±0.1 weight % after diffusion. | 10-29-2009 |
| 20090314389 | Ion Nitriding Method - When a metal material such as an Fe alloy or Ni alloy is heated in the presence of an amino resin such as a melamine-formalin resin, a passivation film on the surface of the metal material is reduced and removed. During the reduction and removal of the passivation film, hydrogen sputtering may be also performed when the temperature becomes higher than 400° C., preferably not less than 450° C. By performing a glow discharge, the metal material having an exposed active metal surface is nitrided with N liberated from the amino resin. For example, the amino resin is applied onto the surface of the metal material directly or by using a solvent such as water. | 12-24-2009 |
| 20100132842 | METHOD FOR IMPROVING SURFACE PROPERTIES OF THE STAINLESS STEELS FOR BIPOLAR PLATE OF POLYMER ELECTROLYTE MEMBRANE FUEL CELL - Disclosed is a method for improving surface properties of the stainless steels for bipolar plate of polymer electrolyte membrane fuel cell having low interfacial contact resistance and excellent corrosion resistance. The method for improving surface properties of the stainless steels according to one exemplary embodiment of the present invention includes: pickling a stainless steel with an aqueous sulfuric acid solution, the stainless steel comprising, by weight: C: 0.02% or less, N: 0.02% or less, Si: 0.4% or less, Mn: 0.2% or less, P: 0.04% or less, S: 0.02% or less, Cr: 25-32%, Mo: 0.1 to 5%, Cu: 0.1 to 2%, Ti: 0.5% or less, Nb: 0.5% or less, and the balance of Fe and other inevitable elements, and then washing the stainless steel with water, and then immersing the stainless steel in a mixture solution of nitric acid and hydrofluoric acid to form a passivation layer. | 06-03-2010 |
| 20110094628 | DIAMOND-LIKE CARBON FILM-FORMED MATERIAL AND METHOD FOR PRODUCING THE SAME - In a DLC film-formed material, an intermediate layer is disposed between a substrate and a DLC film. The intermediate layer is a composite layer containing a component metal atom derived from the substrate and a diamond-like carbon. For example, such intermediate layer can be formed by applying a negative bias to the substrate while reducing the absolute value of the negative bias with time, in a plasma layer formation process. A carbon target or a hydrocarbon gas can be used as a carbon source. | 04-28-2011 |
| 20120037278 | ROLLING BEARING OF CERAMIC AND STEEL ENGAGING PARTS - A roller bearing having two cooperating rolling parts of which one is of ceramic and the other of a steel. The steel part is of such structure and/or material and/or is so produced to cause residual compressive stresses to form beneath the contact surface of the steel part, at least in a load-free state, down to a depth. | 02-16-2012 |
| 20120042991 | PROCESS FOR SURFACE TREATING ALUMINUM OR ALUMINUM ALLOY AND HOUSING MADE BY SAME - A housing includes a substrate made of aluminum or aluminum alloy, an ion implantation layer formed on the substrate, and a vacuum coated layer formed on the ion implantation layer. The ion implantation layer is implanted with one or more ion species selected from the group consisting of nitrogen ion, oxygen ion, and boron ion and is substantially comprised of one or more selected from the group consisting of aluminum nitride, aluminum oxide, and aluminum boride. The implanted ions can improve the compactness of the ion implantation layer. Thus, the corrosion resistance of the housing can be improved. | 02-23-2012 |
| 20120192998 | METHOD OF MANUFACTURING A MAGNETO-RESISTANCE EFFECT ELEMENT - An example method for manufacturing a magneto-resistance effect element having a magnetic layer, a free magnetization layer, and a spacer layer includes forming a first metallic layer and forming, on the first metallic layer, a second metallic layer. A first conversion treatment is performed to convert the second metallic layer into a first insulating layer and to form a first metallic portion penetrating through the first insulating layer. A third metallic layer is formed on the first insulating layer and the first metallic portion. A second conversion treatment is performed to convert the third metallic layer into a second insulating layer and to form a second metallic portion penetrating through the second insulating layer. | 08-02-2012 |
| 20130081740 | Composition design and processing methods of high strength, high ductility, and high corrosion resistance FeMnAlC alloys - A novel FeMnAlC alloy, comprising 23˜34 wt. % Mn, 6˜12 wt. % Al, and 1.4˜2.2 wt. % C with the balance being Fe, is disclosed. The as-quenched alloy contains an extremely high density of nano-sized (Fe,Mn) | 04-04-2013 |
| 20140251501 | METHOD AND SYSTEM FOR DIE COMPENSATION AND RESTORATION USING HIGH-VELOCITY OXY-FUEL THERMAL SPRAY COATING AND PLASMA ION NITRIDING - A method and system for die compensation and restoration uses high-velocity oxy-fuel (HVOF) thermal spray coating and plasma ion nitriding to compensate for a particular part (damaged part) of a press die that causes formation of fine curves at a door of a vehicle to restore it to its original state. A coating thickness quantification technique may precisely compensate for the damaged part of the die that causes formation of the fine curves at the door of the vehicle in a circular form using HVOF thermal spray coating. A surface of the die may be nitrided using plasma ion nitriding after HVOF thermal spray coating is performed, so as to harden the surface of the die so that wear resistance and fatigue resistance of the die can be greatly improved and the hardfacing or overlay welding efficiency of the die can be increased. | 09-11-2014 |
| 20150129087 | METHOD OF MAKING POROUS NITROGENIZED TITANIUM COATINGS FOR MEDICAL DEVICES - The disclosure describes a method of making porous nitrogenized titanium coated substrates. The process includes depositing titanium on a substrate using a glancing angle deposition (GLAD) process and then nitrogenizing the deposited titanium using a thermal or plasma-assisted thermal gaseous nitrogenizing process. | 05-14-2015 |
| 20150361544 | APPARATUS AND METHOD FOR NITRIDING GRAIN-ORIENTED ELECTRICAL STEEL SHEET - Provided is an apparatus for continuously nitriding a strip continuously being fed after cold rolling and before secondary recrystallization annealing in a production line of a grain-oriented electrical steel sheet, comprising: a nitriding zone for nitriding the strip; a cooling zone for cooling the strip; and an optional heating zone provided upstream of the nitriding zone for heating the strip, wherein, the nitriding zone is provided with glow discharge electrodes, and by plasma nitriding the strip by glow discharge with the glow discharge electrodes functioning as positive electrodes and the strip functioning as a negative electrode, inhibitor forming elements are uniformly dispersed over the full length and full width of the strip and a grain-oriented electrical steel sheet with excellent magnetic properties with no variation is obtained. | 12-17-2015 |
| 20150376764 | PROCESS FOR MANUFACTURING A FIXING DEVICE - The invention relates to a process for manufacturing a fixing device and a fixing device made by such a process. In particular, albeit not exclusively, the present invention relates a fixing device for application in fixing to concrete and like materials/substrates. The present invention therefore seeks to provide a fixing device for fixing to concrete, other like substrates which overcomes, or at least reduces some of the known problems of the prior art. The present invention also seeks to provide a fixing device which has enhanced corrosion resistance. | 12-31-2015 |
