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| Number | Title | Issue Date |
| 7422789 | Cathodic protection coatings containing carbonaceous conductive media A cathodic protection polymeric compound is disclosed. The compound has flowable material to serve as a binder, carbonaceous conductive media dispersed in the flowable material, sacrificial metal particles also dispersed in the flowable material. The carbonaceous co... | 09/09/2008 |
| 7332069 | Cathodic corrosion protection powder coating composition and method The present invention provides a curable cathodic corrosion protection powder coating, which comprises a thermosetting resin, a zinc borate compound, a curing agent in an amount effective to cure the coating. Further, the present invention also provides a method of ... | 02/19/2008 |
| 7318889 | Apparatus, system and method for extending the life of sacrificial anodes on cathodic protection systems An apparatus, system, method and computer program product directed to controlling corrosion of a conductive structure in contact with a corrosive environment and electrically connected to one or more anodes, wherein the anodes are less noble than the conductive stru... | 01/15/2008 |
| 7317321 | Methods and systems for automated pipeline testing A method for testing effectiveness of a cathodic protection device configured to apply at least one voltage across an underground structure and a reference point is described. The method includes providing a sample of the material from which the underground structur... | 01/08/2008 |
| 7279087 | Method for protecting metal-containing structures, deposited on substrate against corrosion A method for protecting metal-containing structures, in particular electrically conductive structures, deposited on a substrate, against corrosive attacks, in particular electrocorrosion attacks. The method applies at least temporarily to the structure a passivation... | 10/09/2007 |
| 7225863 | Plate-type heat exchanger with anodic corrosion protection To protect a plate-type heat exchanger (1) against corrosion due to the attack of sulfuric acid, it is proposed in accordance with the invention that the region through which flows sulfuric acid has at least one metal cathode (16, 17) and one reference... | 06/05/2007 |
| 7211173 | System for inhibiting fouling of an underwater surface A marine fouling inhibiting system comprises first and second conductors which are made of a polymer matrix, such as vinyl ester, and a suspended conductor, such as graphite powder or particles. This type of conductive material is formed to provide two sections of a... | 05/01/2007 |
| 7186327 | Method and apparatus for scaling control and in-situ cathodic protection A method and apparatus wherein an electrically conductive element is placed inside a previously installed metallic water vessel such as a supply pipe or well. A direct current voltage is then applied between the element and the conductive wall of the vessel. The con... | 03/06/2007 |
| 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 |
| 7147768 | Electrochemical scale inhibition A process of reducing scaling of a metal surface exposed to an aqueous solution from which scale may form after a period of exposure. The process comprises applying a cathodic potential to the surface for at least some of the period of exposure. In some cases, e.g. ... | 12/12/2006 |
| 7041895 | Streamer discharge type lightening rod capable of generating lots of ions A streamer discharge type lightening rod is disclosed, which is capable of generating lots of ions so that a certain object can be effectively protected from lightening in such a manner that an induction current is formed using ions in the air as thundercloud is for... | 05/09/2006 |
| 6938581 | Supplemental water heater tank and system A supplemental water heater tank and system features a supplemental tank with an inner vessel surrounded by an outer jacket. The space there between is generally evacuated of air so that the inner vessel is vacuum insulated. The supplemental tank includes water inle... | 09/06/2005 |
| 6935018 | Copper plated invar with acid preclean A method for forming a copper-Invar-copper (CIC) laminate having an intermetallic layer of negligible thickness, and a structure associated with the CIC laminate. Starting with a block of Invar, the method includes a cleaning step followed by an electroplating step.... | 08/30/2005 |
| 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 |
| 6890420 | Semiconductive polymeric system, devices incorporating the same, and its use in controlling corrosion A semiconductor system is provided that uses semiconductive organic polymers, electronics and semiconductor technology to provide a wide array of semiconductor components and a system of preventing corrosion of a surface of a metal structure in contact with a corros... | 05/10/2005 |
| 6811681 | Semiconductive corrosion and fouling control apparatus, system, and method An apparatus, system, method and computer program product directed to controlling corrosion of a conductive structure in contact with a corrosive environment and coated with a semiconductive coating, where the corrosion is controlled by a controllable filter and a c... | 11/02/2004 |
| 6562206 | Anode assembly A propeller attachment is disclosed including a body, the body including an anodic material, at least one projection projecting from the body, and a fastener coupled to the body. An anode is also disclosed including an annular body constructed from an ano... | 05/13/2003 |
| 6551491 | Method and system of preventing corrosion of conductive structures A system for preventing corrosion of a surface of a metal structure in contact with a corrosive environment comprising: (a) a semiconductive coating in conductive contact with at least part of the surface; and (b) an electronic filter for filtering corrosive n... | 04/22/2003 |
| 6524466 | Method and system of preventing fouling and corrosion of biomedical devices and structures A system for preventing corrosion and/or fouling of a surface of a biomedical device in contact with a corrosive environment comprising: (a) a semiconductive coating in conductive contact with at least part of the surface; and (b) an electronic filter for filt... | 02/25/2003 |
| 6425997 | Process for removal of chloride ions from steel surfaces A process for removing chloride ions from steel surfaces and measuring the amount present on the steel surface being tested employs a high frequency waveform alternating current treatment as a pre-measurement step to liberate the chloride ions into deioni... | 07/30/2002 |
| 6402933 | Method and system of preventing corrosion of conductive structures A system for preventing corrosion of a surface of a metal structure in contact with a corrosive environment comprising: (a) a semiconductive organic polymer coating in conductive contact with at least part of the surface; and (b) an electronic filter for filte... | 06/11/2002 |
| 6331242 | Anodic encasement corrosion protection system for underground storage tanks, and metallic components thereof Corrosible metallic elements of tank are protected by an anodic encasement sleeve. The anodic encasement sleeve employs an inner sacrificial anodic layer and an outer environmental barrier layer to provide both cathodic and barrier protection against corr... | 12/18/2001 |
| 6325915 | Method and system of preventing corrosion of conductive structures A system for preventing corrosion of a surface of a metal structure in contact with a corrosive environment comprising: (a) a semiconductive coating in conductive contact with at least part of the surface; and (b) an electronic filter for filtering corrosive n... | 12/04/2001 |
| 6303017 | Cathodic protection of reinforced concrete Reinforcement in concrete is cathodically protected by galvanically connecting a sacrificial anode, such as a zinc or zinc alloy anode, to the reinforcement, and contacting the anode with an electrolyte solution having a pH which is maintained sufficientl... | 10/16/2001 |
| 6214203 | Anodic encasement corrosion protection system for pipe and appurtenances, and metallic components thereof Corrosible metallic elements of pipe are protected by an anodic encasement sleeve. The anodic encasement sleeve employs an inner sacrificial anodic layer and an outer environmental barrier layer to provide both cathodic and barrier protection against corr... | 04/10/2001 |
| 6179990 | Biased acid cleaning of a copper-invar-copper laminate A method for cleaning a copper-INVAR-copper laminate in an acid solution without inducing a galvanic etching of the INVAR. An initial step of the method forms a circuit element that includes a power supply, the laminate electrically coupled to a negative ... | 01/30/2001 |
| 6033553 | Cathodic protection system The present invention relates to the field of cathodic protection of reinforced concrete. A conductive metal is thermally applied onto an exposed surface of the concrete in an amount effective to form an anode on the surface. This establishes an interface... | 03/07/2000 |
| 6024861 | Electric anticorrosion method and apparatus In an electrically corrosion-proofing process in which the polarity of a metal member having a coating film is set at negative, the duration of setting the polarity of the metal member immersed in an aqueous solution of NaCl at negative is made discontinu... | 02/15/2000 |
| 5868920 | Method for inhibition of growth of organisms on faces of constructions submerged in a liquid The invention concerns a method for inhibition of growth of organisms on faces of constructions (11) submerged in a liquid. In themethod, an electrically conductive structure (11) to be protected is connected as the cathode of a source (14) of direct curr... | 02/09/1999 |
| 5759361 | Cathodic protection system for a steel-reinforced concrete structure An anode for cathodically-protected steel-reinforced concrete is embedded in an ion-conductive overlay on the concrete structure. The anode comprises at least one sheet of highly expanded valve metal mesh having a pattern of voids defined by a network of ... | 06/02/1998 |
| 5667649 | Corrosion-resistant ferrous alloys for use as impressed current anodes Impressed current anodes such as cathodic protection anodes comprise iron based alloys including less than 70% iron and less than 0.1% carbon. Additional components may include molybdenum, chromium, nickel and others. The iron based alloy may itself compr... | 09/16/1997 |
| 5643424 | Apparatus for the prevention of fouling and/or corrosion of structures in seawater, brackish water and/or fresh water A device and method for preventing fouling and/or corrosion of the exposed surfaces of a structure which is in contact with seawater, brackish water, fresh water, or a combination of these. The system includes using a structure having an exposed zinc-cont... | 07/01/1997 |
| 5513694 | Anodic protection method and system A heat exchanger and process for use with a corrosive fluid, such as sulphuric acid, having an anodic protection system for protecting the acid-contacted surfaces wherein the anodic protection system has a plurality of elongated cathodes of such cross sec... | 05/07/1996 |
| 5505826 | Hydrophilic anode corrosion control system A method and apparatus for reducing corrosion on the interior and exterior of a fuel storage tank. A galvanic anode assembly is placed within the interior of or exterior to the fuel storage tank and is surrounded by a layer of hydrophilic gel. The hydroph... | 04/09/1996 |
| 5478451 | Method and apparatus for preventing corrosion of metal structures A system for preventing corrosion of a surface of a metal structure in contact with a corrosive environment comprising (a) a conductive zinc silicate coating in conductive contact with at least part of the surface, wherein the conductive zinc silicate coa... | 12/26/1995 |
| 5411646 | Cathodic protection anode and systems A continuous length anode is formed of relatively small valve metal wire having a electrocatalytic coating braided into a highly flexible ribbon. The wire may be copper cored. The valve metal is preferably titanium, although tantalum or niobium are also p... | 05/02/1995 |
| 5352342 | Method and apparatus for preventing corrosion of metal structures A system for preventing corrosion of a surface of a metal structure in contact with a corrosive environment comprising: (a) a conductive zinc silicate coating in conductive contact with at least part of the surface, wherein the conductive zinc silicate coating... | 10/04/1994 |
| 5346598 | Method for the prevention of fouling and/or corrosion of structures in seawater, brackish water and/or fresh water A device and method for preventing fouling and/or corrosion of the exposed surfaces of a structure which is in contact with seawater, brackish water, fresh water, or a combination of these. The system includes using a structure having an exposed zinc-cont... | 09/13/1994 |
| 5344531 | Prevention method of aquatic attaching fouling organisms and its apparatus This invention relates to a method of preventing or controlling aquatic attaching fouling organisms which comprises covering aquatic organisms attaching portions on the surfaces of submerged structures or intake facilities with a plurality of mutually ins... | 09/06/1994 |
| 5324397 | Method for inhibiting corrosion of carbon steel in contact with hydrofluoric acid and tetrahydrothiophene-1, 1-dioxide A method for inhibiting corrosion of carbon steel in contact with a mixture of hydrofluoric acid and tetrahydrothiophene-1,1-dioxide comprising raising the electrical potential of said structure such that the electrical potential of said structure is posi... | 06/28/1994 |
