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| Number | Title | Issue Date |
| 7435326 | Control for galvanic corrosion inhibiting coupling A pipe coupling for joining two electrolyte-conveying pipes of electrochemically dissimilar metals and inhibiting galvanic corrosion resulting from the dissimilarity. A tubular pipe coupling has a pair of axially spaced protection electrodes mounted to its interior ... | 10/14/2008 |
| 7247229 | Coatings for the inhibition of undesirable oxidation in an electrochemical cell A process for electroplating of metal utilizing a valve metal electrode substrate containing multiple coating layers is disclosed. A top coating layer of a valve metal oxide is applied over a first coating layer of an electrochemically active coating. The electrode ... | 07/24/2007 |
| 7182852 | Cryogenic tank testing method including cathodic protection The present invention provides a method of testing a cryogenic metal tank before it is put into service, in which said method said tank (1) is filled with water and appropriate measurements are performed where necessary, the method being characterized in that... | 02/27/2007 |
| 6669837 | Alkali metal hydroxide evaporator system A process for reducing the corrosion of nickel metal in an alkali metal hydroxide evaporator equipment which comprises the step of impressing a total protection potential directly upon the nickel metal material in alkali metal hydroxide evaporator that is... | 12/30/2003 |
| 6562229 | Louvered anode for cathodic protection systems A metal anode useful in a galvanic or impressed current cathodic protection system for a steel reinforced concrete article is a unitary, multi-plane, porous, metal anode strip or ribbon having a plurality of louvers defining a plane or planes at the later... | 05/13/2003 |
| 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 |
| 6254743 | Expanded titanium metal mesh This invention relates generally to an electrically conductive valve metal mesh of extreme void fraction. More particularly the invention relates in a most important aspect to an application thereof for an electrode structure in such a way as to prevent t... | 07/03/2001 |
| 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 |
| 5897755 | Cathodic protection test station A cathodic protection test station device has a terminal board integrally formed with a base plate. A removable housing locks onto the base plate and covers the terminal board and the base plate. A tab formed in the base plate extends into a recess formed... | 04/27/1999 |
| 5759361 | Cathodic protection system for a steel-reinforced concrete structure An anode for cathodically-protected steel-reinforced concrete is embedded in an ion-conductive overlay on the concrete structure. The anode comprises at least one sheet of highly expanded valve metal mesh having a pattern of voids defined by a network of ... | 06/02/1998 |
| 5639358 | Cathodic protection system for a steel-reinforced concrete structure An anode for cathodically-protected steel-reinforced concrete is embedded in an ion-conductive overlay on the concrete structure. The anode comprises at least one sheet of highly expanded valve metal mesh having a pattern of voids defined by a network of ... | 06/17/1997 |
| 5366600 | Cementitious composition A cementitious composition containing metal-coated fibres especially metal-coated carbon fibres in an amount of 0.1 up to 5% by weight relative to the weight of the cement component of the composition. The composition can be used as a conductive layer in ... | 11/22/1994 |
| 5338417 | Cathodic corrosion protection for an aluminum-containing substrate Cathodic corrosion protection for surfaces of metallic substrates is provided by carrying out electrolysis, switching off the electrolysis, observing a control voltage and switching on the electrolysis again when the control voltage equals a specified cri... | 08/16/1994 |
| 5055166 | Surface mounted cathodic protection anode and method of use Methods of cathodically protecting structures, anode assemblies used therein and the structures protected thereby. One embodiment of the structure basically consists of a base layer of concrete and, in the case of paved structures, an overlay material dis... | 10/08/1991 |
| 5040599 | Cathodic protection Cathodic corrosion protection of a metallic structure in contact with the earth employs a backfill material which is a mixture of a carbonaceous solid and a clay. The backfill mixture is used to fill around at least one anode which is positioned in a bore... | 08/20/1991 |
| 4874487 | Corrosion protection Corrosion protection systems which make use of a barrier which is placed between a corrodible substrate and a counter-electrode. The barrier can provide more uniform current distribution on the substrate, and/or enable the counter-electrode to be more eas... | 10/17/1989 |
| 4798657 | Cathodic protection system A protective apparatus adapted for limiting corrosive effects of a liquid stored in a metallic storage tank. The apparatus includes anode means for carrying an impressed current to produce an electrolytic effect and inhibit corrosive interaction between t... | 01/17/1989 |
| 4561949 | Apparatus and method for preventing activity loss from electrodes during shutdown An improved method for shutting down an electrolytic cell for the electrolysis of aqueous solutions containing ionizable compounds is provided. The electrolytic cell has a first electrode, a second electrode of opposite polarity, a first conductor electri... | 12/31/1985 |
| 4544464 | Ground anode prepacked with backfill in a flexible structure for cathode protection with impressed currents Flexible ground anode prepacked with backfill for protection of a cathode with impressed currents, made up by a flexible anodic conductor (1), surrounded by backfill and coaxially centered as to the flexible external casing (2) by means of spacers (3), wh... | 10/01/1985 |
| 4445989 | Ceramic anodes for corrosion protection An anode useful in corrosion protection comprising a metallic substrate having an applied layer thereon of a ferrite or a chromite, said layer having metallic electronic conductivity and a thickness of at least 10 mils (254 μm).... | 05/01/1984 |
| 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 |
| 4345981 | Anodically polarized surface for biofouling and scale control Biofouling and scale control in conductive aqueous systems is effected on metal, preferably valve metal such as titanium, surfaces on which such fouling normally occurs by applying thereto a stable electrocatalytic coating, anodically polarizing said valv... | 08/24/1982 |
| 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 |
| 4256556 | Anodically polarized surface for biofouling and scale control Biofouling and scale control in conductive aqueous systems is effected on metal, preferably valve metal such as titanium, surfaces on which such fouling normally occurs by applying thereto a stable electrocatalytic coating, anodically polarizing said valv... | 03/17/1981 |
| 4255241 | Cathodic protection apparatus and method for steel reinforced concrete structures A cathodic protection system and method for steel reinforcement in concrete structures such as bridge decks, parking garage decks and highways utilizes platinized niobium or like metal wire anodes strategically positioned adjacent the concrete in a matrix... | 03/10/1981 |
| 4187164 | Anode A titanium or niobium cathodic protection anode component comprising a strip of metal roll formed to have, in cross-section, a U-shaped portion with a pair of arms extending from the free edges of the U-shaped portion there being a layer of platinum on th... | 02/05/1980 |
| 4175021 | Apparatus for preventing end effect in anodes An apparatus for and method of preventing end effect in deep well impressed current anodes surrounded by a carbonaceous backfill in which the opposite ends of an elongated slender anode are of non-conducting material and the remainder of the anode include... | 11/20/1979 |
