Class 204/230.3 - Mechanical

Subclass of Class 204 - Chemistry: electrical and wave energy
Definition: Apparatus having a mechanical device for controlling current,
No. of patents: 39
Last issue date: 01/17/2012

Number	Title	Issue Date
8097131	Electrochemical machining method and electrochemical machining device A method and a device for electrochemically machining workpiece having blade end plates at the longitudinal both ends of a blade-shaped portion having aerofoil shape in cross section by extending and retracting divided electrodes. A part of the blade-shaped portion ...	01/17/2012
7481909	Plating apparatus, plating method and multilayer printed circuit board A plating apparatus includes a plating bath, a member provided in the plating bath and a moving device. The member is configured to cover a surface to be plated. A moving device is configured to relatively move the member or the surface to change an area of the surf...	01/27/2009
7429314	Device for controlling the travel distance of a chisel in a feeding system for an aluminium production electrolytic cell Device for equipment of a cell (1) comprising an electrolytic bath (4) covered with a crust (5), with a chisel (13) that can be moved vertically between a high position in which it is above the crust (5) and a low position in which...	09/30/2008
7390382	Reactors having multiple electrodes and/or enclosed reciprocating paddles, and associated methods Reactors having multiple electrodes and/or enclosed reciprocating paddles are disclosed. The reactor can include multiple electrodes spaced apart from a process location to provide virtual electrodes proximate to the process location for transferring material to or ...	06/24/2008
7138039	Liquid isolation of contact rings Embodiments of the invention may further provide a contact ring for an electrochemical plating system. The contact generally includes a substrate receiving member having a substrate support surface formed thereon, a plurality of electrical contact pins extending fro...	11/21/2006
7090751	Apparatus and methods for electrochemical processing of microelectronic workpieces A processing chamber comprising a reaction vessel having an electro-reaction cell including a virtual electrode unit, an electrode assembly disposed relative to the electro-reaction cell to be in fluid communication with the virtual electrode unit, and an electrode ...	08/15/2006
7087144	Contact ring with embedded flexible contacts A contact assembly for supporting a substrate in an electrochemical plating system, wherein that contact assembly includes a contact ring and a thrust plate assembly. The contact ring includes an annular ring member having an upper surface and a lower surface, an an...	08/08/2006
7025861	Contact plating apparatus Embodiments of the invention generally provide a substrate processing system and method. The substrate processing system generally includes a fluid basin configured to contain a plating solution therein, an anode assembly positioned in a lower portion of the fluid b...	04/11/2006
6926816	Analysis method of film thickness distribution and design system of printed circuit board and manufacturing processes The object of the present invention is to provide a film thickness distribution analysis method that ensures quick and effective prediction of film thickness distribution by computer simulation in the pattern plating process. On the circuit pattern of a print...	08/09/2005
6478934	Motorized frame for adjusting the interelectrodic gap in mercury cells The invention concerns a motorized device for adjusting the interelectrodic gap in mercury cathode electrolysis cells, mainly consisting of a frame, to which a number of anodes are suspended, movable in the vertical direction by means of a single jackscre...	11/12/2002
6344123	Method and apparatus for electroplating alloy films A compositionally modulated material electroplated film is deposited by using at least two source metal anodes in an electroplating apparatus, and changing at least one power setting of an electroplating power supply. In order to obtain sharp boundaries b...	02/05/2002
6344124	Method and apparatus for electroplating alloy films A compositionally modulated material electroplated film is deposited by using at least two source metal anodes in an electroplating apparatus, and changing at least one contact area between an anode an electrolyte. In order to obtain sharp boundaries betw...	02/05/2002
6274010	Electroplating apparatus An apparatus for electroplating at least one substrate is disclosed as including a trough, two anodes, at least one bath and two poly-tetrafluoroethylene sheets or a number of substantially rigid polypropylene plates, in which the trough supports the subs...	08/14/2001
6267864	Field assisted transformation of chemical and material compositions Methods and devices for transforming less desirable chemical species into more desirable or useful chemical forms are disclosed. The specifications can be used to treat pollutants into more benign compositions and to produce useful chemicals from raw mate...	07/31/2001
6245209	Electro-refining system and method An electro-refining system in which the deposited metal is harvested without the need to remove the cathode from the slurry bath. The cathode has a hollow cavity permitting steam or hot water to be introduced to heat the cathode. During the deposition pro...	06/12/2001
6179983	Method and apparatus for treating surface including virtual anode An apparatus for depositing an electrical conductive layer on the surface of a wafer includes a virtual anode located between the actual anode and the wafer. The virtual anode modifies the electric current flux and plating solution flow between the actual...	01/30/2001
6132583	Shielding method and apparatus for use in electroplating process An electroplating system includes a tank that holds an electrolytic bath solution. An anode within the tank receives a first voltage having a first potential. A substrate cathode, immersible in the solution within the tank, spaced from the anode, receives...	10/17/2000
5985123	Continuous vertical plating system and method of plating An electroplating apparatus comprising: an electroplating tank assembly for receiving an electroplating solution; transfer structure for transferring a substrate to be electroplated along a transfer passage within the electroplating tank assembly; at leas...	11/16/1999
5865963	Insulator for electro-refining systems An improved insulator which assists operation of electrodes, particularly in the electro-winning process. Each insulator extends around the electrode and is secured by its ends to the electrode. Bulges or bumps on the insulators maintain a predefined dist...	02/02/1999
5776327	Method and apparatus using an anode basket for electroplating a workpiece A method and apparatus are provided for electroplating a workpiece. The apparatus includes an anode basket containing particles of an electroplating material. A mask is positioned around the anode basket to selectively block current flow from the basket t...	07/07/1998
5543028	Electroforming semi-step carousel, and process for using the same An electroforming/electrodeposition process and apparatus includes a first electrode, a second electrode spaced from the first electrode, a channel defined by the first and second electrodes and at least one electrically nonconductive or poorly conductive...	08/06/1996
5454924	Apparatus for the electrolytic recovery of silver from solutions containing silver An apparatus for the electrolytic recovery of silver from solutions containing silver is described. The apparatus comprises an electrolytic cell, an anode positioned within the cell, a reference electrode positioned within the cell, and a removable cathod...	10/03/1995
5421966	Electrolytic regeneration of acid cupric chloride etchant An electrolytic apparatus and process for the on-line regeneration of acid cupric chloride etching baths used in printed circuit board fabrication is described. The apparatus utilizes a regeneration process which exactly reverses the reaction Cu+CuCl...	06/06/1995
5401370	Device for masking field lines in an electroplating plant The invention builds on an arrangement for the masking of field lines in an electroplating plant for the treatment of essentially plate-shaped workpieces, which are loaded into the bath suspended from a workpiece holder, wherein a mask is provided which i...	03/28/1995
5391276	Device for screening off lines of electric flux in an installation for electrolytically processing essentially flat elements (III) The invention relates to a device for screening off lines of electric flux in an installation for electrolytic processing of substantially plate-shaped material in the form of one or more workpieces which is held underneath a goods carrier and immersed in...	02/21/1995
5378337	Electrical nucleation device for supercooled heat storage medium A device for electrically nucleating a supercooled melt of heat storage medium to artificially induce crystallization. The device includes a metallic electrode to which a rigid cover member is secured in tight mechanical contact therewith. A trace of a hy...	01/03/1995
5332487	Method and plating apparatus A method of and an apparatus for the electroplating of material onto substrates, such as computer memory disks, by use of a plating cell comprising cathodes, anodes, passive shields, filters, an oscillation system and an electrical power supply. Anodes an...	07/26/1994
5084153	Electrical apparatus The maximum acceptable operating current of an electrode immersed in an electrically conductive liquid is increased by providing at least one shield member in front of the electrode and serving to reduce the current density at the part or parts of the ele...	01/28/1992
4855020	Apparatus and method for the electrolytic plating of layers onto computer memory hard discs An apparatus for the electrolytic plating of computer memory discs comprising a plating container for the receipt of a liquid plating bath, a spindle fitted to the plating container, a prime mover connected to the spindle for causing relative rotational m...	08/08/1989
4786376	Electrodeposition without internal deposit stress An apparatus and method are described for electrodepositing an electroform with near zero internal stress. A voltage controlled power supply supplies current to both a mandrel, upon which a primary electroform is deposited, and to a deformable thin disk s...	11/22/1988
4720329	Apparatus and method for the electrolytic plating of layers onto computer memory hard discs An apparatus for electrolytic plating of computer memory discs comprising a plating container, a spindle, a prime mover, an anode, and an electrical transmission system. The plating container contains a liquid plating bath having a nickel compound include...	01/19/1988
4710282	Device for siliverizing running water A running water passes through a passage from its inlet to its outlet and is guided by at least two electrodes so that it repeatedly changes its direction to flow transversely to and along the electrodes to be continuously saturted during its running by s...	12/01/1987
4643816	Plating using a non-conductive shroud and a false bottom A shroud of electrically non-conductive material and a false anode are used in a plating operation to provide uniform electrodeposition of material on a workpiece. The plating apparatus includes a cell having a bath with the material to be electrodeposite...	02/17/1987
4498965	Plating apparatus A plating apparatus for plating an annular diaphragm member which includes a first lower member including a first vertical passage formed therein having an opening, an outlet port in fluid communication with the first vertical passage, and a surface forme...	02/12/1985
4482445	Methods and apparatus for electrochemically deburring perforate metallic clad dielectric laminates Methods and apparatus for electrochemically deburring perforate metallic clad dielectric laminates such, for example, as laminated printed circuit boards (PCBs) or printed wiring boards (PWBs) and similar machined and fabricated laminated dielectric parts...	11/13/1984
4476001	Device for collecting alkaline cell liquor from an electrolytic cell Device for attachment to the overflow line of an electrolytic cell, for collection of alkaline cell liquor and for concurrent interruption of electrical current flow from cell in such liquor. The device consists of a closed container having a liquor inlet...	10/09/1984
4304641	Rotary electroplating cell with controlled current distribution An apparatus and a method for rotary electroplating a thin metallic film having a uniform thickness and composition throughout. The apparatus includes a flow-through jet plate having nozzles of increasing size and uniformly spaced radially therethrough, o...	12/08/1981
4025413	Electrolytic refining of metal Apparatus for electrolytically refining copper by the series process comprises a tank having an inner surface of an electrically insulating synthetic polymeric material that is substantially inert to an electrolyte solution to be contained in the tank and...	05/24/1977
3960696	Aluminum electrolysis furnace In an aluminum electrolysis furnace provided with an anode structure located above a cathode forming part of the bottom of the furnace chamber, whereby direct electric current between the anode and the cathode causes aluminum to be obtained from aluminum ...	06/01/1976

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Class 204/230.3 - Mechanical