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| Number | Title | Issue Date |
| 8025778 | Cathodic protection apparatus and method In combination, a storage tank having a metal bottom, compacted electrolytic backfill below the tank bottom and a cathodic protection anode within the backfill below the tank bottom. The anode is in the form of a generally continuous ribbon that is shaped to follow ... | 09/27/2011 |
| 7875157 | Composite anode well and revitilization method A composite reconstituted anode well. The composite well has a first while section and a second regenerative section. The first well section has a pre-existing anode well earthen wall, pre-existing sacrificed carbon material, pre-existing sacrificed anode materials,... | 01/25/2011 |
| 7374643 | Composite sacrificial anodes The invention relates to composite sacrificial anodes, particularly but not exclusively, based on magnesium, and to methods for their production. The composite sacrificial anode (10) for immersion in a corrosive environment comprises a plurality of castings (... | 05/20/2008 |
| 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 |
| 7189312 | Under water cable system having an earthing electrode An earthing electrode assembly and method for providing a submerged electrical apparatus with an earth path, the electrode assembly having an earthing electrode, an attachment device for attaching the electrode assembly to a cable, and an insulated electrical connec... | 03/13/2007 |
| 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 |
| 7032658 | High power umbilicals for electric flowline immersion heating of produced hydrocarbons Methods and apparatus for installing electrically heated composite umbilicals within subsea flowlines containing produced hydrocarbons as immersion heaters to prevent waxes and hydrates from forming within the subsea flowlines that could block the flowlines. The ele... | 04/25/2006 |
| 6858117 | Cathodic protection device for flexible pipes The flexible pipe comprises a plastic sealing sheath and an inner plastic sheath which define an annular space in which structural elements are placed. The structural elements comprising at least one armor ply consisting of metal wires wound helically with a long pi... | 02/22/2005 |
| 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 |
| 6193857 | Connector for use in cathodic protection and method of use Cathodic protection of concrete-reinforcing steel reinforcing elements is accomplished utilizing an anode of a metal (e.g. zinc) having a more negative electrical potential than the steel reinforcing element, and connecting at least one wire made of a duc... | 02/27/2001 |
| 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 |
| 5512149 | Sacrificial anode device with optimized anode/cathode interface surface contact area Metal corrosion which occurs under conditions of use is mitigated and controlled by a sacrificial anode device which can be easily attached to, and detached from the corrosion-prone object. In ambient applications, the anode and cathode components of the ... | 04/30/1996 |
| 5480521 | Tendon foundation guide cone assembly and anode A method of providing a cathodic protection to an installed pile is disclosed in which a plurality of anodes are provided on a tendon foundation guide assembly which is attached to a lowering unit and lowered to the pile. The tendon foundation guide assem... | 01/02/1996 |
| 5362921 | Flexible subsea line A flexible subsea line includes a number of longitudinal elements including fluid/gas conducting tubes enclosed within a common outer cover. A number of the tubes are made of steel and each of these steel tubes is in longitudinal electrical contact with a... | 11/08/1994 |
| 5316641 | Storage tank internal corrosion prevention anode apparatus and method An internal corrosion prevention anode device and method for retrofitting an existing fuel storage tank of the type having one or more low points, includes inserting an anode through an opening formed in the top of the tank. The anode is formed having a r... | 05/31/1994 |
| 4510032 | Chains A cathodically protected, studded chain link of theta configuration is provided with at least one anode member (13) provided with a connector (21) for fastening it to the stud (12) of the link to facilitate subsequent renewal of the anode member.... | 04/09/1985 |
| 4292149 | Current rope anodes The invention provides a submergeable structure provided with cathodic protection means comprising a flexible impressed current anode assembly including at least one elongate electrode wound around a rope and lying in the depressions between the strands o... | 09/29/1981 |
| 4251343 | Sacrificial anode apparatus A sacrificial anode apparatus for providing cathodic protection of metal structures, a portion of which is in water is disclosed. The anode apparatus comprises: (a) a perforated subsurface container for anode material, (b) sacrificial anode material in continu... | 02/17/1981 |
| 4216070 | Protection of stud-link chain-cables by means of soluble anodes A system for cathodic protection of anchor chain-cables. The chain-cable in this system comprises at least one stud-link, and at least the outer layer of the stud of at least one such link consists of soluble anodic material. The purpose of this device is to e... | 08/05/1980 |
| 4195197 | Corrosion resistant URD cable A method of providing a secure, long-lasting electrical connection between the concentric neutral wires of a Underground Residential Distribution (URD) cable and a sacrificial anode. The invention provides for the prevention of corrosion of the neutral wi... | 03/25/1980 |
| 4091291 | System for underground distribution of electrical power and electrical cable construction for use therein A system for the underground distribution of electrical power is provided and includes an electrical cable construction particularly adapted for use underground; and, the cable construction has a central conductor, a tubular insulator system for the condu... | 05/23/1978 |
| 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 |
