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| Number | Title | Issue Date |
| 7842179 | Sealing ring assembly and mounting method A sealing ring assembly and an improved method for mounting a sealing ring into an electrochemical cell used for Electrochemical Capacitance Voltage (ECV) profiling measurements. The ring is located in a holder having at least one secondary bore providing fluid comm... | 11/30/2010 |
| 7780842 | Apparatus and method for determining the zeta potential of surfaces for the measurement of streaming metrics related thereto Methods and apparatuses for measuring streaming metrics. A method for measuring a streaming metric corresponding to a rotating surface is characterized by rotating the surface around an axis of rotation and measuring the streaming metric at a location within one rad... | 08/24/2010 |
| 7361310 | Direct write nanolithographic deposition of nucleic acids from nanoscopic tips The use of direct-write nanolithography to generate anchored, nanoscale patterns of nucleic acid on different substrates is described, including electrically conductive and insulating substrates. Modification of nucleic acid, including oligonucleotides, with reactiv... | 04/22/2008 |
| 7156965 | Scanning electrochemical potential microscope An apparatus and method of determining a potential at a surface of a sample in a polar liquid, for example, across an electrical double layer, includes the step of immersing the sample in a polar solution to form a potential gradient at the surface. A tip of a scann... | 01/02/2007 |
| 7125482 | Use of electrochemistry to detect buried service lead (Pb) and copper (Cu) water pipes The present invention relates to using a rectifier, a groundbed consisting of four (4) copper rods, power supply, three (3) copper/copper sulfate (Cu/CuSO4) reference electrodes, a data logger for detecting and identifying buried lead (Pb) and copper (Cu)... | 10/24/2006 |
| 7078919 | In situ determination of resistivity, mobility and dopant concentration profiles The present invention provides techniques for an in-situ measurement of resistivity profiles and dopant concentration distributions in semiconductor structures, such as shallow junctions. A substrate with a resistor test structure having a conduction circuit may be ... | 07/18/2006 |
| 6911136 | Method for regulating the electrical power applied to a substrate during an immersion process A method and apparatus for providing a uniform current density across an immersed surface of a substrate during an immersion process. The method includes the steps of determining a time varying area of an immersed portion of the substrate during the immersion proces... | 06/28/2005 |
| 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 |
| 6843904 | Inspection and repair of active type substrate An in-substrate selective electrochemical treatment system for finding and repairing pinholes of an active substrate including holding an insulating substrate having a conductive pattern, supplying a predetermined amount of a specified chemical solution to a specifi... | 01/18/2005 |
| 6613218 | Methods for estimating adsorption isotherms in electrochemical systems The present invention provides a technique for enhancing electrocatalysis in electrochemical systems. Electrochemical impedance spectroscopy is performed for an electrode/electrolyte system at an intermediate frequency. Using an appropriate equivalent cir... | 09/02/2003 |
| 6245204 | Vibrating tip conducting probe microscope A scanning probe microscope is provided for measuring at least one characteristic of a surface, the microscope including a force sensing probe which is responsive to the at least one characteristic of the surface, an oscillator which moves the position of... | 06/12/2001 |
| 6214210 | Electrochemical surface analysis using deoxygenated gel electrolyte Electrochemical surface analysis using a deoxygenated gel electrolyte provides advantages over a liquid electrolyte in processes such as sequential electrochemical reduction analysis. In sequential electrochemical reduction analysis, a solderable portion ... | 04/10/2001 |
| 6123817 | Probe of scanning electrochemical microscope This invention concerns a scanning electrochemical microscope prove capable of measuring a specimen which does not have a smooth surface. The probe is insulated by a monomolecular adsorption film, a monomolecular laminated film, or polymer film (i.e., org... | 09/26/2000 |
| 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 |
| 5882719 | Solid tantalum capacitor test A combination of static voltage and sweep voltage tests performed on capacitor grade powders gives a valid prediction of performance of eventual solid electrolyte capacitors incorporating such powders.... | 03/16/1999 |
| 5858204 | Electrochemical sensor and process for assessing hydrogen permeation An electrochemical sensor designed to be employed in equipment of petrochemical plants made of an electrochemical cell without polarization which includes an outer tube or first electrode and an internal rod or second electrode. Both first and second elec... | 01/12/1999 |
| 5851376 | Catalyst degradation determination apparatus and method A catalyst degradation determination apparatus having O2 sensors provided at the upstream and downstream of a catalyst, detects degradation of the catalyst by, during A/F ratio feed-back control since an engine has been started, comparing an in... | 12/22/1998 |
| 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 |
| 5846398 | CMP slurry measurement and control technique Chemical mechanical polishing slurry characteristics, such as oxidant concentration and abrasive particle dispersion, are determined using electrochemical measurement techniques, such as chronoamperometry, amperometry, chronopotentiometry, ionic conductiv... | 12/08/1998 |
| 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 |
| 5496451 | Method for detecting chemical substances On the bottom face of a measurement section, measurement electrodes and a reference electrode are formed and a solution supply pipe is opened. Then, if a predetermined electrolytic solution is supplied from the solution supply pipe, the electrolytic solut... | 03/05/1996 |
| 5382336 | Tip position modulation and lock-in detection in scanning electrochemical microscopy Small amplitude tip-position modulation (TPM) in combination with lock-in detection of the modulated current signal is applied to a scanning electrochemical microscope (SECM) to improve signal-to-noise ratio and to enhance image resolution. Phase shift in... | 01/17/1995 |
| 5281814 | System for imaging and detecting threshold phenomena associated with and/or atomic or molecular spectra of a substance by reflection of an AC electrical signal A microwave sweep oscillator is used to apply an AC signal from the probe tip of a scanning tunneling microscope to a sample, and the reflected signal from the sample is measured by a microwave spectrum/network analyzer, or another device capable of measu... | 01/25/1994 |
| 5202004 | Scanning electrochemical microscopy A method for locating a chemical substance on the surface of a material and for determining the contour of a surface of a material using a scanning electrochemical microscope is provided in the present invention. The substance to be examined is immersed i... | 04/13/1993 |
| 5202018 | Process for electrochemical dissolution of semiconductors The invention relates to the electrochemical dissolution of semiconductors by alternating application of anodic and cathodic direct currents to an electrode formed by contacting a semiconductor material with an electrolyte.... | 04/13/1993 |
| 4886552 | Method for monitoring the removal of a metallic contaminant from the surface of a metallic article A method for simultaneously removing and monitoring the removal of a metallic contaminant from the surface of a metallic workpiece is disclosed. The workpiece and a reference electrode are immersed in an electrically conductive cleaning solution. The pote... | 12/12/1989 |
| 4840708 | Process for the precise determination of the surface area of an electrically conducting shaped body The process for the precise determination of the surface area of an electrically conducting shaped body is performed by immersing said body as one electrode in an electrolyte. A steady or variable voltage or a steady or variable electrical current is appl... | 06/20/1989 |
| 4820643 | Process for determining the activity of a palladium-tin catalyst The effectiveness of a palladium-tin catalyst for subsequent plating thereon is determined by employing cyclic voltammetry.... | 04/11/1989 |
| 4715218 | Method of determining degree of embrittlement of low alloy steel A method of determining the degree of embrittlement of low alloy steel with high accuracy and good reproducibility, comprising the steps of bringing the low alloy steel into contact with an aqueous solution of an aromatic compound having a nitro group and... | 12/29/1987 |
| 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 |
| 4545863 | Automated membrane test cell apparatus and method for so using Disclosed is an automated electrolytic membrane test cell apparatus adaptable for the purpose of accurately measuring the electrolytic properties of membranes used in chlor-alkali cells under operating conditions similar to those used in such cells. The a... | 10/08/1985 |
| 4487661 | Method and device for determining the physical characteristics of a semiconductor material In a method for determining the physical characteristics of a silicon wafer, one side of the wafer (4) is removably fixed to the base (2) of a container (1) so as to close off a hole (3) therein. An electrical connection to this side of the wafer (4) is m... | 12/11/1984 |
| 4483748 | Automated membrane test cell apparatus and method for so using An automated electrolytic membrane test cell apparatus adaptable for the purpose of accurately measuring cationic transport and water transport numbers for membranes used in chlor-alkali cells under operating conditions similar to those used in such cells... | 11/20/1984 |
| 4379029 | Method of measuring metallic cation and water transport numbers for cation exchange hydraulically impermeable membranes and test cell therefor An electrolytic membrane transport cell adaptable to experimental use for the purpose of accurately measuring simultaneously cation transport and water transport numbers (mol/Faraday) under operating conditions similar to those used in commercial chlor-al... | 04/05/1983 |
| 4278508 | Method of detecting a cathodic corrosion site on a metallized substrate A method of detecting a cathodic corrosion site on a metallized substrate comprises depositing molecules of a pH sensitive fluorescent dye adjacent a metallic surface of the substrate, the metallic surface having a corrosion site thereon characterized by ... | 07/14/1981 |
| 4168212 | Determining semiconductor characteristic The electrochemical measuring technique of the present invention employs, as the barrier material, a concentrated electrolyte, which also forms a medium for the controlled dissolution of a surface of the semiconductor so as to provide a continuous depth p... | 09/18/1979 |
| 4133722 | Process for determining properties of materials A process and apparatus applicable to products which are or can be made electrically conductive for the purpose of measuring information encoded in them as a result of the manufacturing steps employed. Elemental mechanogalvanic potentials reflect a measur... | 01/09/1979 |
| 4129480 | Method and apparatus for determining the immersed surface area of one of the electrodes of an electro-chemical bath The immersed surface area of one of the electrodes in a conventional electro-chemical bath is accurately determined, so that the bath may be operated at an optimium current density, to obtain high quality electro-plating or electro-polishing. The current ... | 12/12/1978 |
| 4090924 | Method to determine the suitability of diaphragm for use in an electrolytic cell An electrical method to determine the suitability of a diaphragm for use in an electrolytic cell. The method comprises inserting the diaphragm between a primary anode and a primary cathode immersed in an electrolyte and then impressing a known direct curr... | 05/23/1978 |
| 4028207 | Measuring arrangements The electrochemical measuring technique of the present invention employs, as the barrier material, a concentrated electrolyte, which also forms a medium for the controlled dissolution of a surface of the semiconductor so as to provide a continuous depth p... | 06/07/1977 |
