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| Number | Title | Issue Date |
| 7585397 | Automatic potential control cathodic protection system for storage tanks A novel cathodic protection system is provided that automatically controls and adjusts the voltage potential between an anode and a structure to protect the structure from corrosion. The cathodic protection system is self-powered, requiring no external power source ... | 09/08/2009 |
| 7425249 | Subsea solar powered test station with voltage readout Apparatus 10 discloses a subsea monitoring station using solar cells to energize at least one electronic circuit incorporating at least one node having a determinable circuit value or other parameter test station providing a full time voltage readout, powered... | 09/16/2008 |
| 7410563 | Method and apparatus for preventing corrosion of contact A method for preventing corrosion of a contact, includes comparing a potential of a signal line connected to the contact with a predetermined potential corresponding to the corrosion of the contact; flowing a corrosion-prevention current into the contact when a resu... | 08/12/2008 |
| 7372005 | Water storage device having a powered anode A water heater having a powered electrode and a method of controlling the water heater. The water heater includes a tank to hold water, a heating element, an electrode, and a control circuit. The control circuit includes a variable voltage supply, a voltage sensor, ... | 05/13/2008 |
| 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 |
| 7303659 | System for preventing adhesion of marine organisms Plural composite panels are aligned in multiple horizontal rows. Each composite panel includes a titanium panel (anode), an electrical insulating member and a stainless-steel band member. The titanium panels (also, stainless-steel band members) of horizontally adjac... | 12/04/2007 |
| 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 |
| 7198706 | Method for inhibiting corrosion of metal The present invention generally provides a method for prevention of corrosion in a metal object by inducing a surface current over the entire surface of the metal object. The surface current can be induced by direct or indirect application of electrical waveforms ha... | 04/03/2007 |
| 7192513 | Cathodic protection junction box current equalizer A cathodic protection junction box current equalizer has a plurality of output terminals each being connectable through a variable resistors to an anode, the resistors being controlled such that the corresponding anode outputs a desired current. ... | 03/20/2007 |
| 7169288 | Methods and systems of cathodic protection for metallic enclosures Systems and methods of cathodic protection. The system includes a metallic housing, a backplane situated within the metallic housing, a cathodic protection card coupled to the backplane and a permanent anode, external to the metallic housing, coupled to the cathodic... | 01/30/2007 |
| 7111668 | Cooling arrangement for an offshore wind energy installation A cooling arrangement for an offshore wind energy installation, having a heat-absorbing device for absorbing heat generated by the electronic devices and/or the mechanical devices of the offshore energy installation, which is to be removed, and a coupled heat-dissip... | 09/26/2006 |
| 7064459 | Method of inhibiting corrosion of a component of a marine vessel A method for inhibiting galvanic corrosion of marine propulsion components impresses an electronic current into the protected component and causes the protected component to act as a cathode in a galvanic circuit which comprises a conductor, such as a ground wire co... | 06/20/2006 |
| 7044075 | Marine vessel corrosion control system A marine vessel corrosion control system contemplates redundant protection for a marine vessel against the effects of galvanic corrosion. The vessel is equipped with typical zinc anodes interconnected together and attached to metallic components to be protected from... | 05/16/2006 |
| 7030770 | Hydrogen storage system and power system incorporating same There is provided a hydrogen storage system having one or more hydrogen storage containers disposed in a confined area with a vent line extending from the one or more storage containers to a location outside of the confined area. One or more sensors are disposed in ... | 04/18/2006 |
| 7029569 | 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... | 04/18/2006 |
| 6955746 | Corrosion-inhibited system and method for providing a utility service to a plurality of consumers A corrosion-inhibited system for providing a utility service to a plurality of consumers includes a plurality of metallic utility service structures, each utility service structure having components buried in a common electrolyte and electrically connected to each o... | 10/18/2005 |
| 6932891 | Wear indicator for sacrificial anode An apparatus for indicating when a predetermined portion of a sacrificial anode has been corroded comprises a detector embedded within the interior of the sacrificial anode initially at a predetermined distance from an exposed exterior surface of the sacrificial ano... | 08/23/2005 |
| 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 |
| 6841059 | Hull potential monitor device having a plurality of annunciators A monitor for use in conjunction with a galvanic protection system for a marine vessel provides automatic and continuous monitoring of a voltage at a reference electrode of the galvanic protection system and displays the results continuously by energizing one or mor... | 01/11/2005 |
| 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 |
| 6678921 | Pre-crimped tie components A tie component comprising first and second pre-crimped portions. Each pre-crimped portion has a plurality of alternating indentations and projections. The pre-crimped portions are joined by alignment and relative movement with respect to one another such... | 01/20/2004 |
| 6579429 | Antifouling system for structure exposed to seawater and heat exchanger A titanium sheet (4) serving as an anode-forming member is fixed on a tube plate (1a) of a heat exchanger (1) via a insulting sheet (5) and an insulating adhesive (6). The sheet (4) is coated with a film (3) of an electrochemically active, stable electric... | 06/17/2003 |
| 6511586 | Marine organism prevention system for structures in seawater An antifouling system (20) for a structure exposed to seawater has an anode forming member (4) bonded to the seawater-exposed surface to be wetted with seawater (15) of the structure via an insulating adhesive (6). The anode forming member 4 is coated wit... | 01/28/2003 |
| 6506295 | Cathodic protection method and device for metal structure A main anode and a pilot anode are mounted on a coating film of a metal structure, a cathode is mounted on a metal based material of the metal structure, a predetermined voltage is applied from the pilot anode to the metal structure, a magnitude of corros... | 01/14/2003 |
| 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 |
| 6419816 | Cathodic protection of steel in reinforced concrete with electroosmotic treatment Combining an electroosmosis direct current (EP) applied at less than 1 mA/Mcm3 (milliamp per 1000 cm3 of concrete) with an anode placed adjacent an outer surface of reinforced concrete soaked with a substantially neutral saline solut... | 07/16/2002 |
| 6331243 | Process and apparatus for preventing oxidation of metal An apparatus for prevention of corrosion in metal objects uses a capacitively coupled fastener or pad attached to a metal body being protected from corrosion. The metal body and the negative terminal of a source of DC voltage (battery) are grounded. The p... | 12/18/2001 |
| 6322691 | Method for passivating steel in large structures formed of steel-reinforced concrete An electro-chemical process for rehabilitating steel reinforced concrete, wherein a distributed flow of electrical current is established between internally embedded reinforcing steel, connected as a cathode, and an external, distributed electrode, connec... | 11/27/2001 |
| 6228238 | Outside power source-type, electrical, corrosion protection Several embodiments of reference electrode constructions for use in electrically anti-corrosion protection systems for marine outboard drives. In each embodiment the reference electrode is contained within a protective covering with a restricted small vol... | 05/08/2001 |
| 6197168 | Electrochemical stain prevention apparatus of submerged structure and process for producing submerged structure used in this apparatus An electrochemical stain prevention apparatus of a submerged structure comprising a submerged structure of which at least the stain prevention surface is formed of a conductive film that does not generate chlorine even by applying a potential of 5 V vs. S... | 03/06/2001 |
| 5840164 | Galvanic isolator A galvanic isolator to protect against galvanic corrosion of a submersible metal marine drive. The galvanic isolator is positioned between shore ground and boat ground to prevent the flow of destructive galvanic currents between the shore ground and the b... | 11/24/1998 |
| 5739424 | Galvanic corrosion inhibiting coupling interposed between two dissimilar pipes The device is an electrically insulating tube which is rigidly mounted between the ends of two dissimilar metal pipes. Longitudinally spaced, annular electrodes are mounted in grooves formed in the cylindrical interior wall. The electrodes are electricall... | 04/14/1998 |
| 5515913 | Anodically protected heat exchanger An anodically protected shell and tube heat exchanger for exchange of heat between a heat transfer fluid in the tubes and a corrosive liquid in the shell. A first anodic protection circuit at one end of the shell comprises a first elongate cathode that ex... | 05/14/1996 |
| 5466353 | Electric power distribution system for active cathodic protection of reinforced concrete constructions An electric power distribution system permitting active cathodic protection of reenforced concrete structures includes a converter device converting a mains supply voltage to low voltage electrical power, a computer in close proximity to the converter dev... | 11/14/1995 |
| 5290407 | System for controlling corrosion in an environment in which thin layers of low-pH corrosive fluids are formed A system for preventing corrosion of a metallic surface in an environment in which a corrosive condensate with a pH of less than about 3 tends to form on the surface exposed to the environment. The system includes an absorbent lining formed from a concret... | 03/01/1994 |
| 5225058 | Control and automatic regulation device for cathodic protection systems in reinforced concrete structures Device for the control and regulation of the feeding unit (60), as well as for monitoring of impressed current cathodic protection systems in reinforced concrete in order to avoid any risks of reinforcement (10) over-protection and to prevent hydrogen emb... | 07/06/1993 |
| 5026468 | Dual bed cathodic protection system with automatic controls This invention relates to a dual bed cathodic protection system with automatic controls and method of use utilizing an impressed cathodic protection anode assembly powered through a solar power supply in conjunction with a sacrificial cathodic protection ... | 06/25/1991 |
| 5012868 | Corrosion inhibition method and apparatus for downhole electrical heating in mineral fluid wells Method and apparatus for corrosion inhibition in an electromagnetic heating system for heating a portion of a mineral fluid deposit adjacent an oil well or other mineral fluid well, in situ. The preferred apparatus includes a power source, that develops a... | 05/07/1991 |
| 4919201 | Corrosion inhibition apparatus for downhole electrical heating Corrosion inhibition apparatus in an electromagnetic heating system for in situ downhole heating in an oil well or other mineral fluid well that includes an A.C. power source for a high amperage, low frequency heating current (e.g. over 50 amperes at 0.01... | 04/24/1990 |
