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| Number | Title | Issue Date |
| 6995574 | Measurement of a coating on a composite using capacitance A method for measuring a thickness of a non-conductive coating on a semi-conductive substrate includes placing a pair of conducting plates in contact with the non-conductive coating. A capacitance value of the non-conductive coating in combination with the semi-cond... | 02/07/2006 |
| 6884333 | Electrochemical system for analyzing performance and properties of electrolytic solutions The invention relates to the analysis of the performance and properties of electrochemical processes, and specifically, to electrolytic solutions and electrode processes. The invention discloses a device and a method for obtaining qualitative and quantitative inform... | 04/26/2005 |
| 6533920 | Device for detecting an end point of electro-plating and method thereof A device for detecting an end point of electro-plating comprises a mandrel having a substrate and a patterned conductive layer with a main conductive area and an insulated conductive area on the substrate, an insulation region interposed between the main ... | 03/18/2003 |
| 6440297 | System and method for determining noble metal concentrations in reactor coolant streams A system and method for determining a noble metal concentration in a sample that is representative of a noble metal concentration in either a volume of water circulated through a nuclear reactor or a surface of a nuclear reactor component exposed to the v... | 08/27/2002 |
| 6365034 | High throughput electrochemical test for measuring corrosion resistance A high throughput electrochemical test method for determining the resistance to corrosion of a metal article coated with a resinous coating which comprises: (a) making, as the working electrode in an electrochemical cell which also comprises a reference e... | 04/02/2002 |
| 6313646 | In-situ electrochemical-based moisture sensor for detecting moisture in composite and bonded structures A hand-held or permanently attached corrosion sensor is described that uses electrochemical impedance spectroscopy (EIS, also known as AC impedance) to detect coating and structural degradation caused by excessive moisture uptake of coated and uncoated co... | 11/06/2001 |
| 6207030 | Apparatus for measuring coating quality A method and apparatus for measuring the quality, e.g., thickness, porosity, or corrosion rate, of a coating inside a hollow body having an opening. The method comprises attaching a probe from a coating measuring device to one end of an extender arm havin... | 03/27/2001 |
| 6106693 | Method for measuring coating quality A method and apparatus for measuring the quality, e.g., thickness, porosity, or corrosion rate, of a coating inside a hollow body having an opening. The method comprises attaching a probe from a coating measuring device to one end of an extender arm havin... | 08/22/2000 |
| 6099718 | Method and device for checking and characteristics of a surface layer of a zirconium-alloy element and use for the checking of fuel rods for a nuclear reactor A sinusoidal voltage is appied to a zirconium alloy clad fuel rod. The current is measured and the impedance is determined to provide a check for the compactness and adhesion of an oxide surface layer on the fuel rod.... | 08/08/2000 |
| 6080293 | Electrolytic test machine An electrolytic test machine is used for a corrosion resistance test for a test material comprised of a metal blank and a coating film. The electrolytic test machine is constructed so that an adverse influence, due to chlorine gas generated during a test,... | 06/27/2000 |
| 6071570 | Electrodes of improved service life A method of preparing electrodes is now described, which electrodes have enhanced adhesion of subsequently applied coatings combined with excellent coating service life. In the method, a substrate metal, such as a valve metal as represented by titanium, i... | 06/06/2000 |
| 6033554 | Corrosion resistance test process for test material comprised of metal blank and coating film A process for promoting corrosion of a test material, is provided including the steps of immersing, in an electrolytic liquid, a test material which is comprised of a metal blank and a coating film formed on the metal blank, and allowing a DC current to f... | 03/07/2000 |
| 6019886 | Comparator for monitoring the deposition of an electrically conductive material on a leadframe to warn of improper operation of a leadframe electroplating process A method and circuit (14) for monitoring an electroplating operation of an electroplating machine (10) of the type having a first electroplating cell (18) for depositing nickel onto an integrated circuit leadframe (12) and a second electroplating cell (19... | 02/01/2000 |
| 5997719 | Electrochemical process for refining platinum group metals with ammonium chloride electrocyte A process for purifying and refining platinum group metals such as platinum, iridium, palladium, rhodium and the like by an electrochemical process using ammonium chloride as the electrolyte to form ammonium chloride platinum group salts as a "slime" foll... | 12/07/1999 |
| 5980711 | Electrolytic test machine An electrode is mounted in a vertical manner in an electrolytic liquid in an electrolytic cell. A harmful gas collecting hood is disposed within the electrolytic cell to cover the entire upper portion of the electrode. One end of a bottom surface of the h... | 11/09/1999 |
| 5972186 | Electrolytic test machine An electrolytic test machine includes an electrolytic cell in which an electrolytic liquid is stored so that a test material is immersed in the electrolytic liquid. An electrode is immersed in the electrolytic liquid. A DC power source supplies a current ... | 10/26/1999 |
| 5849174 | Electrodes and their use in analysis A method for indicating the concentration of a substance in solution includes passing an alternating voltage between a first electrode structure having coated thereon a polymer and a second separate counter electrode in the solution. The polymer is in one... | 12/15/1998 |
| 5820746 | Metal surface state evaluation method and semiconductor device production method Metal formed on a semiconductor wafer is brought into contact with ions adapted to corrode the metal, and subjected to constant-current electrolysis using a galvanostat. The electrode potential of the metal is measured. There are obtained (i) the relation... | 10/13/1998 |
| 5746905 | Coating evaluation system The organic coating deposited on a metallic substrate is quantitatively euated by measurement of electrical signals through an electrochemical cell having an electrode separated from the deposited coating by a porous pad within which a liquid medium is a... | 05/05/1998 |
| 5698085 | Coating analysis apparatus A coating analysis apparatus is suitable for analyzing four physical properties including the internal stress of a coating, the thickness of a coating, the current efficiency of electroplating and the corrosion rate of a coating. The apparatus comprises a... | 12/16/1997 |
| 5518601 | Extended use planar sensors A planar, solid-state electrochemical oxygen sensor having a substrate, conductive strips deposited on the substrate, and a dielectric layer insulating portions of the conductive strips except those portions which define a working electrode and at least o... | 05/21/1996 |
| 5501777 | Method for testing solder mask material Disclosed is a method for testing solder mask material for suitability with an electroless plating process. The Emix potential of the electroless bath is measured. A test substrate including the mask material is then immersed in an electrolyte, and a cons... | 03/26/1996 |
| 5425859 | Method and apparatus for assessing and restoring solderability A sequential electrochemical reduction method and apparatus are provided for assessing and restoring solderability of electronic component leads. The method detects and quantifies the presence of metallic oxides that are detrimental to solderability by se... | 06/20/1995 |
| 5404104 | Device and method for monitoring and locating defects in, and detachment of, the protective covering of underground or immersed metal structures or pipelines A method for monitoring the state of, and for locating any detachment of, the protective covering of immersed or buried pipelines or other metal structures subjected to cathodic protection with constant current, on the basis of the overall electrical resi... | 04/04/1995 |
| 5334303 | Electrochemical measurement system A quartz crystal resonator is utilized to effect evaluation of the viscoelastic characteristic of a film deposited on an electrode by an electrochemical reaction. The quartz crystal resonator is connected to a resonator characteristic measurement unit com... | 08/02/1994 |
| 5324399 | Method and system for monitoring quality of phosphate coating A method and system for monitoring the quality of a phosphate coating on a metal surface having a large surface area. The method comprises applying a current or potential between the metal surface and one or more counter electrodes while they are in the p... | 06/28/1994 |
| 5314602 | DNA detector and DNA detection method In a DNA detecting method wherein the fluorescence detection type electrophoresis apparatus is used, Texas Red is employed as a fluorophor which labels a DNA fragment, an He-Ne laser having an emission wavelength of 594 nm is used as an excitation light, ... | 05/24/1994 |
| 5298130 | Method of monitoring major constituents in plating baths containing codepositing constituents A method of monitoring the concentration of metal ions comprising a major constituent in a plating bath which is insensitive to the effects of other codepositing constituents within the bath. The method involves applying a brief plating signal to a pretre... | 03/29/1994 |
| 5286357 | Corrosion sensors A corrosion sensor (1), apparatus for detecting corrosion of a surface incorporating the sensor, a structural assembly (1,21) incorporating the sensor and method for detecting corrosion of a surface employing the sensor are provided. The sensor comprises ... | 02/15/1994 |
| 5262022 | Method of assessing solderability A sequential electrochemical reduction method and apparatus for assessing solderability of electronic component leads and printed wiring boards. The method detects and quantifies the oxides present on copper, solder, and intermetallics that are detrimenta... | 11/16/1993 |
| 5155361 | Potentiostatic preparation of molecular adsorbates for scanning probe microscopy A method of preparing molecular adsorbates for scanning probe microscopy by potentiostatic methods. Negatively charged molecules are deposited upon and held to a substrate with an electrochemical cell having a gold substrate, a platinum wire counter elect... | 10/13/1992 |
| 5076906 | Method for testing encapsulation integrity A procedure is disclosed for detecting and documenting flaws in the glassivation layer protecting the active device region of an integrated circuit. A droplet of dilute sulfuric acid solution is placed on top of the glassivation layer and a positively bia... | 12/31/1991 |
| 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 etching during which the depth of etching is determined b... | 02/26/1991 |
| 4919766 | Inspection of electrodes having activated layers Process for the visual inspection of an electrode (anode) having an activated layer for electrogalvanizing plants for steel bands in which the electrode to be tested is inserted between anode and cathode of a sodium sulfate electrolytic cell with the surf... | 04/24/1990 |
| 4846936 | Method and apparatus for measuring metal exposure in resin covering portion in metal container and constituent member thereof Disclosed is a method for measuring the metal exposure in a resin covering area of a metal container or a constituent member thereof, which comprises contacting the resin covering area of the metal container or the constituent member thereof with a measur... | 07/11/1989 |
| 4735693 | Process for producing carbon fiber A method for detecting the surface characteristic of a carbon fiber, which comprises making the carbon fiber travel through an electrolyte solution, applying an electric potential in said solution between the carbon fiber serving as a working electrode an... | 04/05/1988 |
| 4629536 | Multilayer depth profile method Methods are provided for analyzing multilayer structures. The multilayer structure is electrolytically anodized at constant current through a plurality of layers of the structure over a predetermined surface area. During the anodization, the change of the... | 12/16/1986 |
| 4620882 | Process for continuously coloring stainless steel A continuous process for coloring a stainless steel strip by continuously causing the strip to pass through a coloring solution wherein a potential difference between the steel of the strip and a reference electrode in the coloring solution is monitored r... | 11/04/1986 |
| 4551209 | Method of calibrating conductive metal oxide electrodes A conductive metal oxide electrode can be calibrated by immersing the electrode and a reference electrode in a solution of known pH and applying to them a setting potential which is approximately equal to the steady state potential that would be observed ... | 11/05/1985 |
| 4537664 | Method for continuously monitoring oxide thickness on moving aluminum foil Either after or during the process of forming aluminum foil for use in making electrolytic capacitors, the formed oxide foil is drawn through two separate electrolytes wherein two electrodes are immersed respectively. An AC voltage source is connected bet... | 08/27/1985 |
