| Patent application number | Description | Published |
|---|
| 20090017230 | Corrosion-resistant internal coating method using a germanium-containing precursor and hollow cathode techniques - Enhanced corrosion resistance is achieved in a coating by using a germanium-containing precursor and hollow cathode techniques to form a first layer directly on the surface of a workpiece, prior to forming an outer layer, such as a layer of diamond-like carbon (DLC). The use of a germanium or germanium-carbide precursor reduces film stress and enables an increase in the thickness of the subsequently formed DLC. Germanium incorporation also reduces the porosity of the layer. In one embodiment, a cap layer containing germanium is added after the DLC in order to further reduce the susceptibility of the coating to chemical penetration from the top. | 01-15-2009 |
| 20090029067 | METHOD FOR PRODUCING AMORPHOUS CARBON COATINGS ON EXTERNAL SURFACES USING DIAMONDOID PRECURSORS - The invention relates to a method for forming high sp | 01-29-2009 |
| 20090065056 | HYBRID PHOTOVOLTAICALLY ACTIVE LAYER AND METHOD FOR FORMING SUCH A LAYER - A “hybrid” photovoltaically active layer is homogenous (in a direction parallel to the major surfaces of the layer) with respect to film constituents, but is non-homogenous with respect to photovoltaic properties. First regions exhibit high absorptivity, while second regions that are perpendicular to the major surfaces of the layer exhibit a higher carrier mobility. The method for forming the layer includes one or all of chemical vapor deposition, the hollow cathode effect, and high power DC pulsing. | 03-12-2009 |
| 20090176035 | METHOD FOR PRODUCING DIAMOND-LIKE CARBON COATINGS USING DIAMONDOID PRECURSORS ON INTERNAL SURFACES - The invention relates to a method for forming high sp | 07-09-2009 |
| 20090311443 | METHOD OF COATING INNER AND OUTER SURFACES OF PIPES FOR THERMAL SOLAR AND OTHER APPLICATIONS - In accordance with one embodiment of the invention, a workpiece having a smaller cross sectional dimension (e.g., diameter) is centered within a workpiece having a larger cross sectional dimension, with the workpieces being electrically connected. In this embodiment, surfaces of the two workpieces can be coated simultaneously, either with the same coating material or different coating materials. In another embodiment, holes are located along the length of an internal metal tube which functions as a gas distribution injector and anode holder. A ceramic liner may be placed inside the internal metal tube, with a conductive wire within the ceramic liner. The internal metal tube may be biased as a cathode, while the internal wire is biased as an anode. The hollow cathode effect is applied in all spaces directly adjacent to the surface or surfaces being coated. In some applications, different surfaces being coated are biased at different voltages. | 12-17-2009 |
| 20110151141 | CHEMICAL VAPOR DEPOSITION FOR AN INTERIOR OF A HOLLOW ARTICLE WITH HIGH ASPECT RATIO - A method and apparatus for plasma enhanced chemical vapor deposition to an interior region of a hollow, tubular, high aspect ratio workpiece are disclosed. A plurality of anodes are disposed in axially spaced apart arrangement, to the interior of the workpiece. A process gas is introduced into the region. A respective individualized DC or pulsed DC bias is applied to each of the anodes. The bias excites the process gas into a plasma. The workpiece is biased in a hollow cathode arrangement. Pressure is controlled in the interior region to maintain the plasma. An elongated support tube arranges the anodes, and receives a process gas tube. A current splitter provides a respective selected proportion of a total current to each anode. One or more notch diffusers or chamber diffusers may diffuse the process gas or a plasma moderating gas. Plasma impedance and distribution may be controlled using various means. | 06-23-2011 |
