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| Number | Title | Issue Date |
| 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 |
| 7329336 | Stabilizer with cathodic protection A cathodic protection system for protecting an underwater structure includes a plurality of blocks which are capable of conforming to various structures. Each of the blocks include: a flexible wire rope, the rope constructed and ar... | 02/12/2008 |
| 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 |
| 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 |
| 7056596 | Method for coating a surface of a track component, in addition to a track component A method for coating a surface of a track component with a coating containing aluminum by means of an arc spraying process. In order to form a coating that exhibits a high resistance to sliding and abrasive wear, aluminum and silicon are applied to the surface in a ... | 06/06/2006 |
| 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 |
| 6793800 | 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... | 09/21/2004 |
| 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 |
| 6554992 | Aluminum alloy exterior coating for underground ductile iron pipe A corrosion resistance treatment for ductile iron pipe placed in corrosive environments provides a corrosion resistant coating from an aluminum-silicon alloy which is applied by thermal spraying or arc spraying onto the material. The alloy contains 88% al... | 04/29/2003 |
| 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 |
| 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 |
| 6224743 | Cathodic protection methods and apparatus Apparatus, compositions and methods provide cathodic protection to a structure by placing an anode layer (10) directly between the structure (22) and its underlying foundation (30). Structures contemplated to be protected in this manner include especially... | 05/01/2001 |
| 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 |
| 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 |
| 5714045 | Jacketed sacrificial anode cathodic protection system A jacketed anode assembly for use in a sacrificial anode cathodic protection system deployed to impede corrosion of steel or steel reinforcement in pilings or similar supporting columns. A non-conductive jacket formed of mating shell halves is lined along... | 02/03/1998 |
| 5415745 | Method for providing cathodic protection to underground metallic structure using galvanic anodes A method of providing cathodic protection to underground metallic structures which comprises creating an excavation spaced from the underground metallic structure and placing in the excavation a hollow casing having a perforate section, the hollow casing ... | 05/16/1995 |
| 5341562 | Method for preventing corrosion of a reinforced concrete structure A method for preventing corrosion of a reinforced concrete structure having a reinforcing steel embedded therein, which comprises coating an aggregate-containing primer on the surface of the reinforced concrete structure, to form a primer layer having a r... | 08/30/1994 |
| 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 |
| 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 |
| 4863578 | Corrodible link for cathodic protection systems In a system for cathodically protecting an underground metallic structure where a sacrificial anode material encasing a metal core is in electrical communication with the structure, the core can be automatically and galvanically disconnected from electric... | 09/05/1989 |
| 4809769 | Engine coolant flush-filtering using external gas pressure A method for rapid cleaning of an internal combustion engine cooling system includes: forcing the coolant liquid from the cooling system to the exterior of that system, treating the coolant liquid in a zone or zones outside the cooling system, said treati... | 03/07/1989 |
| 4793403 | Engine coolant flush-filtering, using external gas pressure A method for rapid cleaning of an internal combustion engine cooling system includes: (a) forcing the coolant liquid from the cooling system to the exterior of that system, (b) treating the coolant liquid in a zone or zones outside the cooling system, sai... | 12/27/1988 |
| 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 |
| 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 |
| 4626329 | Corrosion protection with sacrificial anodes A method for inhibiting corrosion of metal in an electrolytic environment comprises electrically interconnecting the metal with an anode consisting essentially of an alloy of aluminum with a rare earth metal or mixture of rare earth metals, optionally als... | 12/02/1986 |
| 4614461 | Tendon of TLP and electrical corrosion protecting method of the same The tendons of a tension leg platform (TLP) used for producing petroleum offshore at a depth of 400-1000 m are protected against fatigue corrosion which mainly determines the life of the tendons. The straight steel pipes (1) have an insulative, corrosion-prote... | 09/30/1986 |
| 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 |
| 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 |
| 4487672 | Method for decreasing corrosion of internal surfaces of metallic conduit systems Large diameter pipes or culverts carrying water or other corrosion producing liquids are cathodically protected by securing, spaced-apart, segment-like elements along the bottom inner (invert) surface of the pipe to effect a partial damming of the liquid ... | 12/11/1984 |
| 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 |
| 4415293 | Offshore platform free of marine growth and method of reducing platform loading and overturn Method of prevent marine growth on the shallow water portions of platform legs by applying a polymer coating to the legs and covering the polymer with a copper-nickel alloy anti-fouling covering.... | 11/15/1983 |
| 4318787 | Sacrificial anode composition in cathodic protection process 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... | 03/09/1982 |
| 4209555 | Corrosion resistant galvanic coating A coating of the inorganic zinc type which has, among other uses, excellent performance in the cathodic protection of metal from corrosion, especially when exposed to hot water. The coating is composed of mixture of zinc dust, extremely fine, high purity ... | 06/24/1980 |
| 4201637 | Sacrificial anode apparatus A sacrificial anode apparatus for providing cathodic protection of metal structures, especially steel offshore platforms, is disclosed. The anode apparatus comprises (a) container for anode material, (b) anode material, and (c) means for continuously and/... | 05/06/1980 |
| 4146448 | Protection of a stern tube shaft liner A method for the electrical protection of a liner used for sealing the stern tube shaft of a ship using an oil bath system, is characterized in that on the sea water-exposed side of the flange portion of the liner proper, at least one easily replaceable s... | 03/27/1979 |
| 4098606 | Electrochemically active aluminium alloy, the method of its preparation and use An electrochemically active alloy of aluminum with indium, gallium and thallium, in which the alloy would consist of, by weight percentage, about 0.01% to 0.5% of indium, gallium, or thallium of varying and selective composition, while the ratios between ... | 07/04/1978 |
