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| Number | Title | Issue Date |
| 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 |
| 7241075 | Umbilical anchoring clamp A subsea cable (3) designed to extend from a floating structure (1) on the sea surface down to a subsea structure (2) on the sea floor with a first portion (3a) extending from the floating structure (1) to the sea floor and ... | 07/10/2007 |
| 7198707 | Apparatus for cathodic protection in an environment in which thin film corrosive fluids are formed and method thereof An apparatus and method for cathodic protection in an environment where thin film corrosive fluids are formed is provided. The apparatus which protects from corrosion an object exposed to the thin film corrosive fluids, by artificially adjusting a potential of the o... | 04/03/2007 |
| 7081187 | Internal cathodic protection system A cathodic protection system for internal surfaces of a pipeline is provided which includes a flexible anode assembly having a first and a second end and having at least one flexible anode wire having a first end and a second end. First and second removable pressure... | 07/25/2006 |
| 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 |
| 7017251 | Resistored anode and a water heater including the same Apparatus and method of incorporating a resistive interface between an anode rod and a water heater tank connector. The resistive interface can include a conductive polymer material or coating. ... | 03/28/2006 |
| 6922886 | APT-1 (anode placement tool-model 1) An apparatus designed for installing anode bracelets upon pipes used in cathodic protection systems. The apparatus includes a pair of grasp booms which hold the anode bracelet during installation of the bracelet around the pipe to be cathodically protected. The gras... | 08/02/2005 |
| 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 |
| 6562201 | 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 wi... | 05/13/2003 |
| 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 |
| 6514401 | Anti-biofouling system An anti-biofouling system adapted to be used for an underwater structure immersed in seawater is disclosed. The anti-biofouling system includes a conductive layer, comprising carbon fiber, graphite powder and binder, formed on a surface of the underwater ... | 02/04/2003 |
| 6423208 | Method and apparatus for lead contamination control Control of lead contamination in residential water supplies is accomplished by cathodic protection of lead-containing piping and lead-containing fixtures. Specifically, a partially insulated wire is inserted into lead-containing service lateral piping. Ap... | 07/23/2002 |
| 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 |
| 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 |
| 6261439 | Cathodic protection system for mitigating stray electric current effects A cathodic protection system utilizes dynamic control of an output from a power supply to vary an impressed current applied to a structure to be protected proportional to a measurement of stray electrical current. The current is also supplied to an anode ... | 07/17/2001 |
| 6238545 | Composite anode, electrolyte pipe section, and method of making and forming a pipeline, and applying cathodic protection to the pipeline An anode is embedded in an electrolyte layer applied to the surface of a structure such as a pipe section to provide an ionic conductive path between the anode and structure to supply cathodic protection to the structure, where the natural environment may... | 05/29/2001 |
| 6120675 | Electrochemical method and electrode An electrochemical electrode of a tube of porous titanium suboxide with a contact connection to an electrical supply.... | 09/19/2000 |
| 6103097 | Method and apparatus for lead contamination control Control of lead contamination in residential water supplies is accomplished by cathodic protection of lead-containing piping and lead-containing fixtures. Specifically, a partially insulated wire is inserted into lead-containing service lateral piping. Ap... | 08/15/2000 |
| 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 |
| 5296121 | Target electrode for preventing corrosion in electrochemical cells In an electrolyzer system having metallic supply and discharge piping subjected to shunt currents, the improvement which comprises a removable target electrode in the section of said piping subjected to said shunt currents, said target electrode having a ... | 03/22/1994 |
| 5006214 | Cathodic protection apparatus A Cathodic Protection apparatus for water supply pipes and especially for the protection of copper pipes in buildings has a pipe section for inserting into the water line entering a building. A pipe section has a pipe coupling on each end thereof for inst... | 04/09/1991 |
| 4954172 | Combination anode mount and hot water outlet for water heater An improved combination anode mount and hot water outlet for a water heater. The water heater includes a tank to contain water to be heated and the tank has an upper head with an opening therein. An annular internally threaded spud is welded to the upper ... | 09/04/1990 |
| 4954233 | Combination anode mount and hot water outlet utilizing a cam lock A combination anode mount and hot water outlet for a water heater. The water heater includes a steel tank to contain water to be heated and has an upper head formed with an opening therein. An annular internally threaded spud is secured to the upper surfa... | 09/04/1990 |
| 4910865 | Method of forming an anode cap assembly An anode cap assembly comprising a stamped metal cap having a generally cylindrical inner section and a closed outer section. An anode rod formed of a metal electronegative to steel is disposed in the cylindrical inner section and the steel core wire of t... | 03/27/1990 |
| 4879801 | Cathodically protected water heater A cathodically protected water heater which eliminates the need of a conventional anode rod. The water heater tank includes a cylindrical shell enclosed by upper and lower heads and a flue which is mounted within openings in the lower and upper heads. The... | 11/14/1989 |
| 4855029 | Integral cathodic protection device A sacrificial anode is made in the form of a disk with a tire made of a sacrificial anodic material. The disk has a central hole which fits over one of two parts to hold the disk in place, as between two telescoping parts, for example. A number of alterna... | 08/08/1989 |
| 4848616 | Electric immersion heating unit with readily removable and replaceable galvanic current control resistor An electric immersion heating unit for use in conjunction with a metallic water heater tank provided with a sacrificial anode has the legs of a U-shaped metallic sheathed heating element extending in electrically insulated relationship through a metallic ... | 07/18/1989 |
| 4838208 | Cathodically protected water heater A cathodically protected water heater which eliminates the need of a conventional anode rod. The water heater tank includes a cylindrical shell enclosed by upper and lower heads and a flue which is mounted within openings in the lower and upper heads. The... | 06/13/1989 |
| 4786383 | Cathodic protection system for a water heater tank A cathodic protection system for a water heater tank incorporating a resistor anode assembly. The steel water heater tank is provided with an opening and an internally threaded spud is secured to the outer surface of the tank bordering the opening. An ano... | 11/22/1988 |
| 4783896 | Method of making cathodically protected water heater A cathodically protected water heater which eliminates the need of a conventional anode rod. The water heater tank includes a cylindrical shell enclosed by upper and lower heads, and a gas burner is located beneath the lower head. The waste products of co... | 11/15/1988 |
| 4776392 | Electrically grounding of non-metallic parts Sacrificial rods have been used in connection with shell and tube type heat exchangers to prevent corrosion of the cooling cores. These rods however have been employed with metallic heat exchanger components. The subject heat exchanger uses electrical non... | 10/11/1988 |
| 4549948 | Sacrificial anode composition A composition which is particularly suitable for providing cathodic protection of metal structures is disclosed. The composition comprises a major amount of particulate anode material and a minor amount of a thixotropic carrier material. A method of using... | 10/29/1985 |
| 4487230 | Increasing the output of a pipeline anode In the cathodic protection of tubular goods transporting fluids above 100° F. with aluminum or zinc anodes, the output efficiency of the anode is increased by thermally insulating the anode from the tubular goods on which the anode is placed.... | 12/11/1984 |
| 4420382 | Method for controlling end effect on anodes used for cathodic protection and other applications `Necking` of elongated cathodic protection anodes is obviated or reduced by means of a nonconductive shield placed around the periphery of the anode, but spaced away from the surface of the anode at the end at which it is connected to a conductor cable. T... | 12/13/1983 |
| 4113600 | Flue pipe anode ring for water heater An anode adherred to a flue pipe which consists of anodic metal like zinc, aluminum or magnesium flame sprayed in the form of a ribbon, strip or ring onto exposed metal at the upper end of the flue pipe beneath the upper head of a water heater. The anodic... | 09/12/1978 |
| 4061965 | Method and apparatus for monitoring a cathodically protected corrodible hollow member A cathodic protection system for a buried, fluid pipeline that has an electrical lead or coil electrically coupled between the pipeline and a sacrificial anode. As the anode deteriorates by electrochemical reaction with its environment, a current flows th... | 12/06/1977 |
| 4060472 | Anode-fitting assembly An anode-fitting assembly for use in hot water tanks, pipelines or the like wherein an interior metallic surface undergoes corrosion when exposed to electrolytic fluids such as air and water. The fitting element of the assembly is comprised of a hollow ni... | 11/29/1977 |
| 4040447 | Protection of pipe against damage to insulation and/or corrosion A mount extends in protective and supportive relation beneath an insulation covered pipe, to protect the insulation against damage. The mount defines a generally concave receptacle receiving the underside of the pipe and insulation, and it may consist of ... | 08/09/1977 |
| 4017714 | Segmented sacrificial anode attachment to water heating element The attachment is easily replaced, is flexible and elongated, and is adapted to be inserted into a tank for heating a liquid through an opening provided in the metal shell of the tank for mounting an electric immersion heater in the tank. The attachment i... | 04/12/1977 |
