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8052860 |
Electrochemical and mechanical polishing and shaping method and system
A method and system are provided for the shaping and polishing of the surface of a material selected from the group consisting of electrically semi-conductive materials and conductive materials. An...
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7998334 |
Method, an apparatus, a control system and a computer program to perform an automatic removal of cathode depositions during a bipolar electrochemical machining
The invention relates to a method, an apparatus and a computer program for electrochemical machining where a removal of cathode depositions is performed in a fully automated way by means of an...
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7951285 |
Process for producing a metal body and metal bodies
The invention provides a process for producing a metal body, which leads in a simple and reliable way to formation of a defined surface topography, if desired also combined, in the range from 10 nm...
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7842169 |
Method and apparatus for local polishing control
A method and apparatus for local polishing and deposition control in a process cell is generally provided. In one embodiment, an apparatus for electrochemically processing a substrate is provided...
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7682498 |
Rotationally asymmetric variable electrode correction
A work piece is electroplated or electroplanarized using an azimuthally asymmetric electrode. The azimuthally asymmetric electrode is rotated with respect to the work piece (i.e., either or both of...
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7632390 |
Apparatus and method for enhancing electropolishing utilizing magnetic fields
A process for electropolishing metals and metalloids and their alloys, intermetallic compounds, metal-matrix composites, carbides and nitrides in an electrolytic cell utilizing an externally...
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7569133 |
Device and method for removing surface areas of a component
Apparatus and process for removing surface regions of a component. The prior art involves removing surface regions of a metallic component by means of electrochemical processes. The electrochemical...
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7560018 |
Semiconductor electrochemical etching processes employing closed loop control
Methods and apparatus for providing closed-loop control over an electrochemical etching process during porous semiconductor fabrication enhance the quality of the porous semiconductor materials,...
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7520966 |
Electropolishing apparatus and method for implantable medical devices
An electropolishing device for polishing a cylindrical medical device such as a stent includes anodes in the form of rollers arranged to contact an exterior surface of the device. A drive mechanism...
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7419581 |
Method for producing optically transparent regions in a silicon substrate
A simple and cost-effective possibility is proposed for producing optically transparent regions (5, 6) in a silicon substrate (1), by the use of which both optically transparent regions of any...
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7377836 |
Versatile wafer refining
Methods of refining using a plurality of refining elements are discussed. A refining apparatus having refining elements that can be smaller than the workpiece being refined are disclosed. New...
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7250103 |
Method and apparatus for eliminating defects and improving uniformity in electrochemically processed conductive layers
A method of removing material from a conductive surface of a workpiece while the conductive surface and an electrode are wetted by a process solution. The method comprises the steps of applying...
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6808617 |
Electrolytic polishing method
A polishing method and polishing apparatus able to easily flatten an initial unevenness with an excellent efficiency of removal of excess copper film and suppress damage to a lower interlayer...
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6793797 |
Method for integrating an electrodeposition and electro-mechanical polishing process
A method for alternately electrodepositing and electro-mechanically polishing to selectively fill a semiconductor feature with metal including a) providing an anode assembly and a semiconductor...
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6676826 |
Method for production of a rotor for centrifugal compressors
A method for production of a rotor for centrifugal compressor, wherein the said rotor is produced from a monolithic disc, which is provided with a central hole. The method consists of use, within...
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6627064 |
Method for removing the hard material coating applied on a hard metal workpiece and a holding device for at least one workpiece
A hard material layer deposited on a hard metal work piece is removed by electrolytic passivation in which a maximum current density equal to at least 0.01 A/cm2 is generated on the work piece at...
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6573106 |
Method of treating carbon or graphite to increase porosity and pore uniformity
A method of pre-treating carbon or graphite material to increase porosity and render pore size more uniform includes etching by electrochemically pulsing the material in an acid saline solution and...
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6524461 |
Electrodeposition of metals in small recesses using modulated electric fields
A layer of a metal is electroplated onto an electrically conducting substrate having a generally smooth surface with a small recess therein, having a transverse dimension not greater than about 350...
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6491808 |
Electrolytic etching method, method for producing photovoltaic element, and method for treating defect of photovoltaic element
An electrolytic etching method for etching treating an object to be etched by an electrochemical reaction through an electrolyte between the object to be etched and an etching electrode, where the...
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6447663 |
Programmable nanometer-scale electrolytic metal deposition and depletion
A method of nanometer-scale deposition of a metal onto a nanostructure includes the steps of: providing a substrate having thereon at least two electrically conductive nanostructures spaced no more...
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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...
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6245213 |
Method for anisotropic etching of structures in conducting materials
In a method for anisotropic etching of a structure in an electrically conductive substance to be etched, use is made of an etchant which in concentrated solution is usable for isotopic etching of...
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6228246 |
Removal of metal skin from a copper-Invar-copper laminate
A method of removing a metal skin from a through-hole surface of a copper-Invar-copper (CIC) laminate without causing differential etchback of the laminate. The metal skin includes debris deposited...
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6007694 |
Electrochemical machining
An electrochemical machining method and apparatus involves the passage of a wire through a programmably controllable electrochemical machine, wherein the wire is tapered along its length to obtain...
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5997720 |
Method for machining extrusion dies
In a metal honeycomb extrusion die which incorporates apertures for the conveyance of extrudable material through the die body toward a discharge opening in the face of the die, the aperture...
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5867189 |
Ink jet print heads
The present invention provides an ink jet print head capable of fast, efficient and consistent printing. Such ink jet print heads include an ink ejecting component which incorporates...
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5853561 |
Method for surface texturing titanium products
The present invention teaches a method of producing a textured surface upon an arbitrarily configured titanium or titanium alloy object for the purpose of improving bonding between the object and...
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5824206 |
Photoelectrochemical etching of p-InP
Photoelectrochemical etching of p-InP in various nitric acid solutions demonstrates that the semiconductor undergoes etching with favorable etch rates in the negative potential region. The etch...
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5728286 |
Method of manufacturing extrusion die for extruding honeycomb structural body
A method of manufacturing an extrusion die for extruding a honeycomb structural body is disclosed. The extrusion die has a plurality of forming channels which have a shape in a traverse cross...
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5630932 |
Tip etching system and method for etching platinum-containing wire
A tip and substrate preparation system for use with scanning probe microscopes (SPMs) includes a scanning tunneling microscope (STM) tip maker, STM tip coater, a substrate treatment method for...
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5574486 |
Ink jet print heads and methos for preparing them
The present invention provides an ink jet print head capable of fast, efficient and consistent printing. Such ink jet print heads include an ink ejecting component which incorporates...
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5565084 |
Electropolishing methods for etching substrate in self alignment
Disclosed are electropolishing methods for etching a substrate in self alignment. A hole is formed in a substrate in self alignment by using an electropolishing system, wherein a reaction tube, an...
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5500101 |
Method of etching aluminum foil for electrolytic capacitor
The present invention relates to a method of etching aluminum foil for electrolytic capacitors that is improved in etching efficiency, wherein when the aluminum foil is etched by applying...
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5480497 |
High speed electrical discharge surface preparation internal surfaces for thermal coatings
A method of preparing metal surfaces for thermally applied coatings by electrical discharge, which method controllably provides greater roughness for increased mechanical coating adhesion, avoids...
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5445718 |
Electrochemical etch-stop on n-type silicon by injecting holes from a shallow p-type layer
The invention generally includes a method of selectively etching a body of silicon material wherein a silicon wafer is used as a working electrode and having an n-type region and a relatively...
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5385651 |
Digital electrochemical etching of compound semiconductors
A method for the digital electrochemical etching of compound semiconductors in an electrochemical flow cell system in which alternating electrochemical potentials are applied between a reference...
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5354437 |
Multi-element microelectropolishing method
A method is provided for microelectropolishing a transmission electron microscopy nonhomogeneous multi-element compound foil. The foil is electrolyzed at different polishing rates for different...
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5336379 |
Photoelectro-chemical etching method and apparatus of compound semiconductor
The photoelectro-chemical etching system of compound semi-conductor is disclosed. The system comprises a laser generator, a shutter to cut off laser beam, a laser beam chopper, a secondary high...
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5326448 |
Method for reducing the polarization of bioelectrical stimulation leads using surface enhancement, and product made thereby
A method is disclosed for greatly reducing pacing polarization of a porous platinum bioelectrical stimulation electrode substrate by applying an oscillating current to the electrode substrate while...
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5306402 |
Method for controlling the machining current in electrochemical machining
In electrochemical machining of workpieces a predetermined product of current quantity and machining time (amp. seconds) is necessary to remove a given quantity of material from a workpiece edge....
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5264110 |
Electrolytic square wave graining
A method of electrolytically graining aluminium, aluminium alloy or aluminium laminate, desirably in a substantially uniform manner, in particular for use as a lithographic printing plate...
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5256262 |
System and method for electrolytic deburring
An electrolytic deburring system and method employing a relatively weakly conducting electrolyte with the cathode immersed in the electrolyte in which an anodic potential is applied to the...
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5203973 |
Method of roughening surfaces
Carbon commutator parts used as races for brushes in electric motors are typically soldered to copper carriers. The solder does not bond well unless a metallic coating is first placed on the carbon...
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5171416 |
Method for making a battery cell electrode
A method for making a battery electrode includes roughening the surface of a substrate (10) that constitutes a precursor to the electrode, using an electrolytic solution (12) with electrical...
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5129981 |
Method of selectively etching silicon
The present invention relates to a method of forming thin bodies of a semiconductor material, such as single crystalline silicon, by selectively etching away a portion of the body until a body of...
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5049246 |
Electrolytic processing apparatus and method with time multiplexed power supply
Apparatus for electrolytic processing of materials, includes an electrolytic processing bath, plural first electrodes, at least one second electrode, and a power supply for supplying time...
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5004528 |
Method and apparatus for electro chemical machining
In the operation of an electro chemical machine, damage can occur if there is direct electrical contact between the workpiece and the machine tool. Such contact causes a rise in machining current,...
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4995939 |
Method and apparatus for determining the layer thickness of semiconductor layer structures
In a process for determining the layer thickness of semiconductor layer structures, a sample of a multilayer semi-conductor (4) is placed in contact with an electrolyte (2) then subjected to anodic...
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4925538 |
Method of electrolytic treatment of metals
A method of electrolytically treating metals with an a.c. current or alternating pulsive current using an electrode comprising a metal substrate having a coating that comprises an oxide of...
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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...
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