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| Number | Title | Issue Date |
| 8034228 | Method and device for the production of components having a three-dimensionally formed surface A method and device for the production of components having a three-dimensionally formed surface by a lowering operation with an electrochemical ablation process, namely a Precise Electro Chemical Machining (PECM) process, is disclosed. The method includes the steps... | 10/11/2011 |
| 7807037 | Apparatus and method for white layer and recast removal A method for removing a metal layer comprising the steps of providing a part having a slot, providing a porous metallic cathode comprising a recess bounded by a wall having an outer surface corresponding to the slot, inserting the porous metallic cathode into the sl... | 10/05/2010 |
| 7462273 | Method and apparatus for forming by electrochemical material removal When forming metallic components, in particular three-dimensionally curved blades, which constitute a single piece with the blading of turbomachine rotor wheels, the linear oscillation of the electrode acting as a tool is superimposed by a circular oscillation, enab... | 12/09/2008 |
| 7425250 | Electrochemical mechanical processing apparatus A system for electrochemical mechanical polishing of a conductive surface of a wafer is provided. The system includes a wafer holder to hold the wafer and a belt pad disposed proximate to the wafer to polish the conductive surface. Application of a potential differe... | 09/16/2008 |
| 7329335 | Device providing electrical contact to the surface of a semiconductor workpiece during processing Substantially uniform deposition of conductive material on a surface of a substrate, which substrate includes a semiconductor wafer, from an electrolyte containing the conductive material can be provided by way of a particular device which includes first and second ... | 02/12/2008 |
| 7294244 | Microelectronic workpiece processing tool including a processing reactor having a paddle assembly for agitation of a processing fluid proximate to the workpiece An integrated tool is provided including at least one workpiece processing station having a paddle assembly. In accordance with another independent aspect of the present invention, the workpiece processing station is adapted for adjusting the level of the processing... | 11/13/2007 |
| 7252746 | Electropolishing apparatus and method for medical implants An electropolishing apparatus and method are provided for polishing stents and other medical implants. The apparatus includes a motor that rotates a roller. The roller continuously rotates the medical implant to be electropolished. One of the advantages of the appar... | 08/07/2007 |
| 7211178 | Fixture for electro-chemical machining On a fixture for electro-chemical machining for the production of long, curved cavities (11) in a component (12), the working electrode (3) of the electro-chemical machining tool (1) is connected to a guide body (1a) which m... | 05/01/2007 |
| 7208070 | Stent manufacture The present invention provides improvements in methods for the manufacture of stents. Specifically, the invention provides methods wherein stents are placed on jigs of various designs which facilitate manufacture, stents carried by the jigs are immersed in liquid ba... | 04/24/2007 |
| 7201829 | Mask plate design The present invention includes a mask plate design that includes at least one or a plurality of channels portions on a surface of the mask plate, into which electrolyte solution will accumulate when the mask plate surface is disposed on a surface of wafer, and out o... | 04/10/2007 |
| 7192260 | Progressive cavity pump/motor stator, and apparatus and method to manufacture same by electrochemical machining Electrochemical machining is used to generate the helical lobe profiles of the stator of a progressive cavity pump or motor. A thin, elastomeric liner, of uniform thickness is bonded either to the interior of the stator, or to the exterior of the rotor. Where the el... | 03/20/2007 |
| 7153411 | Method for cleaning and polishing metallic alloys and articles cleaned or polished thereby A method of cleaning and polishing an alloy comprising at least one noble metal and at least one non-noble metal, the method including the steps of submerging said alloy in an electrolytic acidic bath comprising at least one chelating or complexing agent including s... | 12/26/2006 |
| 7151347 | Passivated niobium cavities A niobium cavity exhibiting high quality factors at high gradients is provided by treating a niobium cavity through a process comprising: 1) removing surface oxides by plasma etching or a similar process; 2) removing hydrogen or other gases absorbed in the bulk niob... | 12/19/2006 |
| 7141180 | Etchant for wire, method of manufacturing wire using etchant, thin film transistor array panel including wire and manufacturing method thereof A method of manufacturing a TFT array panel according to the present invention forms a gate wire on an insulating substrate. The gate wire includes a plurality of gate lines and a plurality of gate electrodes connected to the gate lines. A semiconductor layer and a ... | 11/28/2006 |
| 7128825 | Method and composition for polishing a substrate Polishing compositions and methods for removing conductive materials from a substrate surface are provided. In one aspect, a composition includes an acid based electrolyte system, one or more chelating agents, one or more corrosion inhibitors, one or more inorganic ... | 10/31/2006 |
| 7125477 | Contacts for electrochemical processing Systems and methods for electrochemically processing. A contact element defines a substrate contact surface positionable in contact a substrate during processing. In one embodiment, the contact element comprises a wire element. In another embodiment the contact elem... | 10/24/2006 |
| 7107676 | One piece foliated leads for sealing in light sources Manufacturing equipment and manufacturing process steps that improve upon prior art processes for the manufacturing of filament tube and arc tube light sources, their components and subassemblies, and lamps employing said light sources. A double ended, tipless filam... | 09/19/2006 |
| 7094255 | Expandable stent and method for delivery of same An expandable stent having a proximal end and a distal end in communication with one another, and a tubular wall disposed between the proximal end and the distal end. The tubular wall has a longitudinal axis and a porous surface defined by a plurality of intersectin... | 08/22/2006 |
| 7029567 | Electrochemical edge and bevel cleaning process and system An edge cleaning system and method is disclosed in which a directed stream of a mild etching solution is supplied to an edge area of a rotating workpiece, including the front surface edge and bevel, while a potential difference between the workpiece and the directed... | 04/18/2006 |
| 6592742 | Electrochemically assisted chemical polish A method of chemically polishing a metal layer on a substrate is provided. The metal layer is chemically polished using an electrochemical polishing (ECP) process. In the ECP process, the substrate is immersed in a chemical polishing solution including a ... | 07/15/2003 |
| 6532662 | Method for processing dynamic pressure groove of fluid dynamic bearing According to this dynamic pressure groove processing method, dynamic pressure grooves are formed in specified regions by electrochemical machining with the electrode of an electrode tool put close to a workpiece in the initial stage. Through this electroc... | 03/18/2003 |
| 6447668 | Methods and apparatus for end-point detection An apparatus for detecting the end-point of an electropolishing process of a metal layer formed on a wafer includes an end-point detector. The end-point detector is disposed adjacent the nozzle used to electropolish the wafer. In one embodiment, the end-p... | 09/10/2002 |
| 6423206 | Method for electrochemical roughening of a substrate To avoid or minimize the occurrence of cross streaks or current streaks on a substrate that is transported through an electrolytic bath and roughened electrochemically in it, the current density is regulated in the electrolyte between a first alternating ... | 07/23/2002 |
| 6413407 | Fluted electrochemical machining An ECM apparatus includes a fluted cathode tool for being driven through a tubular workpiece for electrochemically forming internal flutes therein. The cathode tool is sealed at one end for isolating electrolyte over the flutes thereof to seal against flo... | 07/02/2002 |
| 6344131 | Method of producing aluminum support for planographic printing plate A support made of an aluminum plate for a planographic printing plate is electrochemically roughened in an acidic aqueous solution in an electrolytic apparatus with plural cathodes and anodes arranged alternately on one side of the plate by applying a DC ... | 02/05/2002 |
| 6299755 | Stent fabrication method and apparatus A method is provided for electropolishing a stent. A stent is mounted on a rack having electropolishing mounts. Each of the mounts has a base and an electrically conductive first member having a first end and a second end. The first end is connected to th... | 10/09/2001 |
| 6221235 | Removal of sacrificial cores by electrochemical machining A sacrificial cores in castings of metallic or non-metallic materials is made from a metal that can be electrolytically dissolved, and is removed from the casting by electrochemical machining. The sacrificial core may be a hollow shell incorporating an in... | 04/24/2001 |
| 5667666 | Process for electrochemically roughening a surface of a metal web A process for roughening a surface of a support for a lithographic printing plate in which an electric current is supplied between a metal web and an electrode facing the metal web in an electrolyte containing metal ions so that the metal web is subjected... | 09/16/1997 |
| 5501787 | Immersion scanning system for fabricating porous silicon films A system for making porous silicon on blank and patterned Si substrates by "immersion scanning", particularly suitable for fabricating light-emitting Si devices and utilizing an open electrolytic cell having a cathode and an opposing anode consisting of a... | 03/26/1996 |
| 5320721 | Shaped-tube electrolytic polishing process The present invention is directed to a shaped-tube electrolytic polishing process which involves providing a workpiece with at least one hole. The hole is polished by advancing a metal tube electrode through the hole while passing an electrolyte through t... | 06/14/1994 |
| 5304288 | Method of and device for the spark erosion of hardmeal objects A hardmetal object is cathodically protected from corrosion by a protective electrode during the spark-erosion process, which protective electrode is electrically connected to the hardmetal object via an external power source. The protective electrode is ... | 04/19/1994 |
| 5242555 | Method of machining workpieces by wire electroerosion and securing machined articles A method of machining workpieces, particularly for wire electroerosion machining in which a machining gap is formed between the machined piece and the workpiece, a machined piece is cut out of the workpiece, and the machined piece is secured against dropp... | 09/07/1993 |
| 5242556 | Electrolytic machining using pulsed electric current The invention relates to a method of electrolytically machining the surface of a workpiece by applying positive and negative electric current pulses alternately and repeatedly across the workpiece and a tooling electrode located oppositely in a neutral el... | 09/07/1993 |
| 5213666 | Method of preparing support for printing plate A method of preparing a support for a lithographic printing plate which comprises roughing electrochemically the surface of an aluminum plate which is rendered an anode in an aqueous neutral salt solution by supplying pulse-formed electric potential. Acco... | 05/25/1993 |
| 5164033 | Electro-chemical etch device An electro-chemical etch device for selectively removing material from an electrically conductive surface. At least two electrodes are each at least partially immersed in an electrically conductive fluid and aligned across the surface, proximate to corres... | 11/17/1992 |
| 5143586 | Electrochemical machining process and equipment A method for electrochemical machining a work piece using an electrochemical machining device including a tool electrode opposing the workpiece across a predetermined machining gap and a device for supplying a pulse current to the machining gap via electr... | 09/01/1992 |
| 5066370 | Apparatus, electrochemical process, and electrolyte for microfinishing stainless steel print bands An apparatus is provided for electrochemically processing an anodic material in strip form, such as the stainless steel print bands used in high speed printers. Also provided is an electrochemical process including electroetching, electropolishing, or bot... | 11/19/1991 |
| 4919774 | Electrolytically treating method A method of continuously electrolytically treating a metal web in an electrolytic liquid using an alternating waveform current via a pair of main electrodes such that the surface of the metal web experiences both an anode reaction and a cathode reaction. ... | 04/24/1990 |
| 4902389 | Process for producing aluminum support for printing plate A process for producing an aluminum support for a printing plate, which involves electrochemical graining of the support, is disclosed. The support is passed through an acidic electrolyte of an electrolytic cell along a path of travel maintained a distanc... | 02/20/1990 |
| 4897168 | Process and arrangement for production of printing plate support The present invention relates to a roughened printing plate support of aluminum or an alloy thereof, which shows equally distributed tubular depressions. Furthermore, a process for the production of the printing plate-support is disclosed, in which roughe... | 01/30/1990 |
