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| Number | Title | Issue Date |
| 7368050 | Quantitative transient analysis of localized corrosion The invention provides an electrochemical noise method, apparatus and system for estimating parameters of interest related to corrosion rates of an electrically conductive article, the method comprising: placing a working electrode, a reference electrode, and a coun... | 05/06/2008 |
| 7285203 | Method and apparatus for instrumental analysis in remote locations The present invention provides a method and apparatus for instrumental analysis in remote locations. In one embodiment, the present invention provides a method of controlling cathodic protection being applied to a metal structure having a surface disposed in an elec... | 10/23/2007 |
| 7182852 | Cryogenic tank testing method including cathodic protection The present invention provides a method of testing a cryogenic metal tank before it is put into service, in which said method said tank (1) is filled with water and appropriate measurements are performed where necessary, the method being characterized in that... | 02/27/2007 |
| 7148706 | Embeddable corrosion rate meters for remote monitoring of structures susceptible to corrosion An embeddable corrosion rate meter (ECRM) for detecting and measuring corrosion in metal and concrete structures is provided. The system comprises an electrochemical cell with at least one working electrode evenly separated from a counter electrode, wherein a separa... | 12/12/2006 |
| 6937686 | Iron control in BWR's with sacrificial electrodes Method for controlling the level of iron in feedwater of a BWR wherein an iron-containing sacrificial electrode in placed contact with the feed water dissolution of the electrode is induced at a rate which provides a desired level of iron in the feedwater. ... | 08/30/2005 |
| 6920799 | Magnetic flow meter with reference electrode An magnetic flow meter is provided which includes a reference electrode configured to electrically couple process fluid flowing within a flowtube of the flow meter. The reference electrode is adapted to measure potential of the process fluid. A current limiter is co... | 07/26/2005 |
| 6911828 | Apparatus and method for detecting the degradation of a coating using embedded sensors A system and method for monitoring the effectiveness of a coating on a substrate surface and indicating the failure of the coating to adequately protect the surface from corrosion, degradation, and the like. The system includes a sensor array positioned in contact w... | 06/28/2005 |
| 6902661 | Corrosion sensor A system using tank corrosion sensors to provide for an overall assessment and monitoring of the electro-chemical corrosion and coatings condition in ships' tanks, and particularly in ships' seawater or compensated fuel tanks. The system includes reference half-cell... | 06/07/2005 |
| 6896779 | Corrosion sensor A system using tank corrosion sensors to provide for an overall assessment and monitoring of the electro-chemical corrosion and coatings condition in ships' tanks, and particularly in ships' seawater or compensated fuel tanks. The system includes reference half-cell... | 05/24/2005 |
| 6814854 | Hydrogen permeation probe method A method for the in situ measurement of atomic hydrogen permeation into carbon steel from process streams under operating conditions of up to 3000 psi and temperatures up to 300° F. includes providing a probe assembly that includes a test specimen electrode and a n... | 11/09/2004 |
| 6517699 | Method for producing polysulfides by means of electrolytic oxidation The present invention has an object to obtain a cooking liquor containing polysulfide-sulfur at a high concentration by minimizing by-production of thiosulfate ions. The present invention is a method for producing polysulfides, which comprises introducing... | 02/11/2003 |
| 6478948 | Method of monitoring and controlling corrosion of furnace boiler tubes A method for monitoring and reducing corrosion in furnace boiler tubes measures electrochemical noise associated with corrosion mechanisms while corrosion is occurring at the surface of the tubes as they are exposed to combustion products. This noise is d... | 11/12/2002 |
| 6281671 | Electrode component group for a corrosion measuring system for detecting corrosion in a metal embedded in a component made of an ion-conducting material, in particular concrete An electrode component group for a corrosion measuring system for detecting corrosion of a metal embedded in a construction component of ion-conducting material has a rod-shaped base body having a first flange member at a first end of base body and a seco... | 08/28/2001 |
| 6258253 | Vapor corrosion cell and method of using same The present invention provides a vapor corrosion cell for a real-time and quantitative measurement of corrosion of conductive materials in atmospheres containing chemically reactive gases and water vapor. Two prototypes are provided. Also provided are var... | 07/10/2001 |
| 6132593 | Method and apparatus for measuring localized corrosion and other heterogeneous electrochemical processes An electrochemical method for measuring localized corrosion and other heterogeneous electrochemical processes is described. A multi-sensor electrode namely the wire beam electrode, integrated by coupling all its wire terminals together, is used to simulat... | 10/17/2000 |
| 6077418 | Corrosion monitoring Corrosion of a metal member under heat transfer condition is monitored by using a test coupon made of the same material as that of the metal member. The test coupon may have a welded portion and a crevice. One substantial surface of the test coupon is hea... | 06/20/2000 |
| 5785842 | Corrosion protection monitoring and adjustment system A system for monitoring and alternatively adjusting the electrical energy input and output of remotely located corrosion protection rectifiers on a section of a longer pipeline includes three elements. The first element is a monitoring unit which monitors... | 07/28/1998 |
| 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 |
| 5188715 | Condensate corrosion sensor An apparatus and method for measuring metal corrosion rate in solutions, including solutions having low ionic strength. Three electrodes including a counterelectrode, a reference electrode, and a working metal electrode are dispossed in close proximity to... | 02/23/1993 |
| 5178822 | Steam generator corrosion monitoring system and method In combination with a steam generator having a plurality of generator tube support plates, each generator tube support plate having a plurality of openings and a plurality of generator tubes, each tube passing through aligned openings in the support plate... | 01/12/1993 |
| 4994159 | Method and apparatus for measuring corrosion beneath thin films A method and an apparatus are provided which can quantitatively measure the orrosion-inhibiting ability of thin films of materials such as lubricants. A galvanic cell is created on a sensitive surface using alternating layers of anodic and cathodic materia... | 02/19/1991 |
| 4789434 | Method and apparatus for measuring corrosion current induced by microbiological activities A corrosion measuring device is disclosed for measuring microbiologically duced corrosion using galvanically coupled electrodes exposed in an electrolytically continuous, biologically separated environment. The device consists of two, mirror image, half-c... | 12/06/1988 |
| 4639677 | Cathodic protection monitoring system An apparatus for monitoring a cathodic protection system on a structure which is positioned in water such that a portion of the structure is beneath the surface of the water, such apparatus comprising: an insulating means positioned adjacent to the struct... | 01/27/1987 |
| 4575678 | Corrosion monitoring In an apparatus or installation having a metal part corroding in an electrolyte contacting the part, that part is a first electrode electrically insulated from a second electrode, for example another part of the apparatus, also contacting the electrolyte.... | 03/11/1986 |
| 4454006 | Method and apparatus for measuring total corrosion rate The corrosion of galvanically coupled metals can be measured and monitored by linear polarization techniques using a test galvanic electrode comprising two individual electrodes of different metals preferably connected end to end with a rigid metallic fas... | 06/12/1984 |
| 4196055 | Method of determining the presence of stray electrical currents in a solution A system and method of detecting stray electrical currents that cause corrosion on metallic structures submerged in electrolytic media. The system makes use of a plurality of metal plates in an arrangement so they will be bipolar electrodes in a stray cur... | 04/01/1980 |
| 4155814 | Method and apparatus for galvanostatic and potentiostatic electrochemical investigation of the rate of corrosion processes A method for galvanostatic and potentiostatic electrochemical measurement of the rate of corrosion of an object is described wherein a working electrode, counter-electrode and reference electrode are immersed in an electrolyte and the electromotive force ... | 05/22/1979 |
| 4087742 | Hot water heater corrosion detector probe A method and apparatus for providing a continuous indication of the interior condition of a water heater tank are shown herein. Iron interior surface of water heater tank is normally protected from corrosion by cathodic protection with the provision of a ... | 05/02/1978 |
| 4056446 | Diverless cathodic protection data acquisition Diverless monitoring of cathodic protection of offshore platforms wherein a reference electrode is passed along a guideline in proximity to a portion of the platform subject to corrosion is improved by maintaining the electrode at a fixed distance and rad... | 11/01/1977 |
