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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 |
| 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 |
| 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 |
| 6200397 | Method and apparatus for strip anode wrapping for cathodic protection of tubular members A novel method and apparatus to apply a corrosion protection in the form of a zinc (or other sacrificial anodic material) tape to a tubular member such as pipe or coiled tubing to used as an underground or underwater pipeline or flow line is disclosed. Th... | 03/13/2001 |
| 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 |
| 5837134 | Scale reduction A method and system are disclosed for reducing the scale formation in a hot water reservoir in which a metal element of copper and/or zinc, and preferably brass, is positioned in the hot water in the reservoir.... | 11/17/1998 |
| 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 |
| 5665221 | Electrical apparatus for controlling liquid contaminants A device is placed in a container containing flowing fluid to neutralize fluid contaminants and prevent their deposition on the walls of the container. The device includes a weak electrical current generator having an electric half-cell that forms an elec... | 09/09/1997 |
| 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 |
| 5470462 | Apparatus for preventing scale formation in water systems Water conditioning apparatus including a housing adapted for connection into a fluid delivery system, the housing having a fluid flow chamber with aligned entrance and exit openings, the chamber having an inner generally tubular surface with inwardly dire... | 11/28/1995 |
| 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 |
| 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 |
| 4713159 | Compact and cleanable apparatus for preventing scale formation in liquid systems A device for eliminating mineral precipitation within a liquid system. A container having inlet and outlet pipes is connectable to external plumbing to receive and pass through the container untreated water or liquid. The inlet pipe is connected within th... | 12/15/1987 |
| 4606828 | Scale formation preventor and/or remover Apparatus and method for removing hardening calcium-containing and similar minerals from water, in which raw water is passed through a passage, having a reduced cross-sectional area, in an elongated core of a suitable alloy. The passage is provided with c... | 08/19/1986 |
| 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 |
| 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 |
| 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 |
| 3974055 | Aluminum alloy anode composition Aluminum alloys prepared from commercial grade aluminum and containing minor amounts of indium and zinc, useful as galvanic anodes, are improved by the addition of a small amount of silicon.... | 08/10/1976 |
| 3953311 | Cathodic protection system A cathodically protected internal joint between two tubular members coupled together and which are provided as part of a fluid conducting system. One of the tubular members tends to be anodic to the other tubular member. In order to prevent corrosion diss... | 04/27/1976 |
