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| Number | Title | Issue Date |
| 7422665 | Anode for cathodic protection An anode for use in cathodic protection of steel in concrete is formed from an electrically conductive material such as zinc and an ionically conductive material which is preferably a humectant and/or has a pH greater than 12 to enhance current flow. The materials a... | 09/09/2008 |
| 7402233 | Apparatus and method for cathodically protecting metals against corrosion A cathodic protection system is provided for cathodically protecting an metallic substrate against corrosion, where the system comprises a sacrificial anodic material containing, but not limited to, zinc, magnesium, aluminum or a mixture of these materials, with a c... | 07/22/2008 |
| 7276144 | Cathodic protection Cathodic protection of a structure including a steel member at least partly buried in a covering layer, such as steel rebar in a concrete structure, is provided by embedding sacrificial anodes into the concrete layer at spaced positions over the layer and connecting... | 10/02/2007 |
| 7264697 | Marine anode with current tester A sacrificial marine anode with a water proof encased current tester to alert an operator of proper connectivity, current status of the cathodic protection system for an associated marine structure, and status of current tester power supply is disclosed. ... | 09/04/2007 |
| 7258780 | Corrosion protection apparatus and method An apparatus and method for protecting a structure from corrosion, according to which the apparatus includes two pivotally connected members, at least one anode device connected to at least one of the members, and a resilient component engaged with the members. ... | 08/21/2007 |
| 7226532 | Cathodic protection of steel within a covering material Cathodic protection of an existing concrete structure, including a steel member at least partly buried, such as steel rebar, in the concrete structure, is provided by embedding anodes into a fresh concrete layer applied over an excavated patch and/or as a covering o... | 06/05/2007 |
| 7160433 | Cathodic protection system The cathodic protection system of a concrete structure (22) uses sacrificial anodes such as zinc, aluminum and alloys thereof embedded in mortar. A humectant is employed to impart high ionic conductivity to the mortar in which the anode is encapsulated. Lithi... | 01/09/2007 |
| 7097746 | Anodic protection of electrical contacts An anode protection device and method are provided. The method includes placing a sacrificial anode in proximity to the positive and negative contacts to shield or distort the field therebetween which provides preferential corrosion of the sacrificial anode, instead... | 08/29/2006 |
| 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 |
| 6770177 | Cathodic protection system for air compressor tanks A corrosion protection device (“CPD”) for inhibiting corrosion of an air compressor collection tank, and relieving the pressure in the tank when excessive condensate accumulates within the tank. A relief passage extends through the plug, and an anode seals the r... | 08/03/2004 |
| 6692633 | Sacrificial anode for corrosion protection of semiconductor metallization during sawing Resistance to corrosion of aluminum metallization on semiconductor devices during wafer sawing process is provided by a sacrificial anode containing magnesium in contact with the integrated circuit wafer and the dicing saw. A relatively thin film or disc ... | 02/17/2004 |
| 6613216 | Combination galvanic anode and wear plate for storage tanks A storage tank for fluids comprises a novel striker plate. The striker plate is comprised of a sacrificial galvanic anode and a steel core, and it is situated opposite an access opening used for measuring depth of fluid in the tank. The striker plate can ... | 09/02/2003 |
| 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 |
| 6358397 | Doubly-protected reinforcing members in concrete A concrete structure is reinforced with steel rebars coated with essentially pure aluminum in the range from about 0.25 mm to 2 mm thick upon which aluminum coating is an aluminum oxide layer in the range from 0.1 μm to 100 μm thick. This layer of alumi... | 03/19/2002 |
| 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 |
| 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 |
| 5968339 | Cathodic protection system for reinforced concrete The present invention resides in a method for cathodic protection of and/or chloride removal from a reinforced concrete structure. The method comprises the steps of: providing an anode comprising a conductive corrodible metal; providing a corrosive enviro... | 10/19/1999 |
| 5932087 | Submersible anode and method An anode and bracket assembly for attaching sacrificial anodes to submerged structures utilizes one or more shepard's hook hanger brackets. The anode or anodes are cast directly on the bracket with a relatively deep spiral grooved profile for vortex shedd... | 08/03/1999 |
| 5728275 | Sacrificial anode and method of making same A sacrificial anode and method of making a sacrificial anode are provided. The anode includes an extruded galvanically active metal rod and integrally formed end cap which has a cylindrically shaped portion with a threaded exterior surface. The anode is f... | 03/17/1998 |
| 5423969 | Sacrificial electrode material for corrosion prevention The present invention provides a sacrificial electrode material which consists of a single phase amorphous structure or a structure consisting of an amorphous phase and a crystalline solid solution phase and provides electrochemical corrosion protection t... | 06/13/1995 |
| 5292411 | Method and apparatus for cathodically protecting reinforced concrete structures Cathodic protection of a reinforced concrete structure utilizes a metal anode such as a zinc anode in combination with a pressure sensitive ionically conductive hydrogel in contact with at least a portion of the surface of the anode. Preferably, the anode... | 03/08/1994 |
| 4987037 | Galvanic coating with ternary alloys containing aluminum and magnesium Galvanic protection of steel is provided by means of coupling thereto of ternary alloys of Al/2.5 to 4% wt. Mg, 0.5 to 35% wt. Si, and Al/2.5-4% wt. Mg, 0.5 to 3.5% wt. Ge with teachings of steel having either alloy coupled thereto, as well as the alloys ... | 01/22/1991 |
| 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 |
| 4877354 | Pipeline anode Providing circumferential grooves in bracelet-type anodes on a pipeline provides for preservation of anode effectiveness during bending of the pipeline, such as in reeling operations.... | 10/31/1989 |
| 4631172 | Aluminum alloys for galvanic anode Alloys for galvanic anode of this invention include those which contain zinc of 1.0 to 10%, magnesium of 0.1 to 6%, indium of 0.01 to 0.04%, tin of 0.005 to 0.15%, silicon of 0.09 to 1.0%, and calcium or barium or both of 0.005 to 0.45%, the balance being... | 12/23/1986 |
| 4629366 | Offshore marine structure with corrosion protection A marine structure adapted to be at least partially submerged at an offshore body of water to drill wells into the ocean floor and to produce fluids therefrom. A corrosion deterrent system for protecting the submerged members of the structure comprises sa... | 12/16/1986 |
| 4626330 | Torsionally installed anode and earth anchor/penetrator A torsionally installed anode for galvanic corrosion protection and a combination torsionally installed anode and earth penetrator is disclosed. The anode may be screwed (i.e., torsionally installed) into the earth (e.g., the seabed, the riverbed, or the ... | 12/02/1986 |
| 4609307 | Anode pod system for offshore structures and method of installation An anode pod system for cathodically protecting offshore structures and method of installing the system in which a set of anode pod units are individually placed on the ocean floor adjacent an offshore structure. Each anode pod unit comprises a plurality ... | 09/02/1986 |
| 4571368 | Aluminum and zinc sacrificial alloy An improved aluminum base alloy which provides corrosion protection in fin stock applications includes 0.6-3.0% silicon; 0.2-1.0% by weight iron; up to 0.2% by weight copper; 0.8-2.0% by weight manganese; up to 0.2% by weight magnesium; from about 0.5% by... | 02/18/1986 |
| 4544465 | Galvanic anodes for submergible ferrous metal structures This invention provides a detachable sacrificial anode unit comprising a rigid core, e.g. a tubular steel member, and a body of sacrificial anode material, e.g. metals and alloys including zinc, aluminum and magnesium, surrounding and supported by said ri... | 10/01/1985 |
| 4496444 | Method of corrosion protection An anode for the cathodic protection of a metallic structure subject to corrosion includes a strip or band of aluminum, zinc, magnesium or alloys thereof. The strip or band is anodic to the metallic structure and has a surface which is adapted to face the... | 01/29/1985 |
| 4484840 | Method and apparatus for installing anodes on steel platforms at offshore locations A method and apparatus for supplementing the substructure of an offshore platform within, or in the vicinity of, the well conductors of the platform so as to add large numbers of anodes distributed vertically within the platform adjacent the well conducto... | 11/27/1984 |
| 4484839 | Method and apparatus for installing anodes on steel platforms at offshore locations A method and apparatus is provided for supplementing the substructure of an offshore platform within, or in the vicinity of, the well conductors of the platform so as to add large numbers of anodes distributed vertically within the platform adjacent the w... | 11/27/1984 |
| 4240829 | Aluminum-base alloy used as material for galvanic protector An aluminum-base alloy used as the material for galvanic protector and consisting essentially of about 0.005 to about 3.5 weight percent gallium, about 0.1 to about 1.0 weight percent magnesium and the balance being essentially aluminum. The alloy is made... | 12/23/1980 |
| 4190512 | Sacrificial anodes Sacrificial anodes are disclosed, which are basically in the form of bracelets and which have a part which is electro-chemically active and a supporting core structure in the form of a mesh or grid of a less chemically active material. Support members are... | 02/26/1980 |
| 4176033 | Anode clamp assembly and method of installation An anode clamp assembly for use in protecting metallic support structure for an offshore oil and/or gas well operations platform from galvanic corrosion is disclosed. The assembly comprises a U-shaped metallic channeled member having straight sides and me... | 11/27/1979 |
| 4141725 | Aluminum alloy for galvanic anode An aluminum alloy for a galvanic anode with improved anode potential and anode current efficiency, which consists of, in weight percentage: Zinc from 0.5 to 10.0%, Indium from 0.005 to 0.050%, Calcium from 0.005 to 0.500%, Magnesium from 0.1 to 4.0%, and The balanc... | 02/27/1979 |
| 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 |
| 4013811 | Laminated anode A laminated anode including a layer of sacrificial metal and a layer of impermeable material. The laminated anode is utilized to protect a metal mold from corrosion where the mold is used for processing a corrosive meat material.... | 03/22/1977 |
