| Patents for C23F 13 - Inhibiting corrosion of metals by anodic or cathodic protection (3,652) |
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| 11/05/1991 | US5062934 Grid electrodes |
| 10/30/1991 | EP0453486A1 Holder device for marine anodes. |
| 10/08/1991 | US5055166 Surface mounted cathodic protection anode and method of use |
| 10/08/1991 | US5055165 Applying conductive zinc-containing coating to exposed surface |
| 10/02/1991 | EP0448963A1 Control and automatic regulation device for cathodic protection systems in reinforced concrete structures |
| 10/01/1991 | US5052962 Naval electrochemical corrosion reducer |
| 10/01/1991 | CA1289910C Titanium mesh in concrete overlay for cathodic protection of reinforcement |
| 09/19/1991 | WO1991014018A1 Electrolytic apparatus for protection against corrosion of a freshwater piping system |
| 09/10/1991 | CA1288721C Electrolytic and flame sprayed aluminum coatings on steel |
| 08/28/1991 | EP0443229A1 Electrically conductive composition and use thereof |
| 08/20/1991 | US5040599 Using coke and sodium bentonite as backfill material impervious to water |
| 08/08/1991 | CA2009611A1 Electrically conductive composition and use thereof |
| 08/07/1991 | CN2082270U Corrosion-proof attachment protecting device |
| 07/17/1991 | EP0266405B1 Concrete ballast block with imbedded or attached anodes for cathodic protection of the bolts and their fittings |
| 07/16/1991 | US5031290 Electrocatalytic coating, reinforcement |
| 07/03/1991 | EP0435761A1 Method and apparatus for determining interferences due to continuous currents flowing in neighbouring, buried metal structures |
| 06/28/1991 | CA2033218A1 Method and apparatus for determining interactions due to direct currents on adjacent buried metal structures |
| 06/27/1991 | WO1991009155A1 Novel electrodes and cathodic protection system |
| 06/27/1991 | CA2032436A1 Fiber-filled concrete overlay in cathodic protection |
| 06/25/1991 | US5026468 Dual bed cathodic protection system with automatic controls |
| 06/11/1991 | US5023928 Apparatus for reducing the current drain on the sacrificial anode in a water heater |
| 06/05/1991 | EP0430071A1 Corrosion resistant structure for soil reinforcement |
| 05/29/1991 | CN1012703B Corrosion protection for heat exchanger |
| 05/25/1991 | CA2030642A1 Corrosion resistant structure for soil reinforcement |
| 05/22/1991 | EP0343188A4 Electrically conductive titanium suboxides |
| 05/21/1991 | US5016585 Anticorrosive and rust free system for marine-using engine |
| 05/14/1991 | US5015351 Electroosmosis, impressing a current, effecting a time controlled transition |
| 05/02/1991 | DE4008329C1 Electric water heater - has resistance heater embedded in electrically insulating material, esp. magnesium oxide |
| 04/30/1991 | US5011583 Insulating propeller from anode |
| 04/23/1991 | US5009757 Electrochemical system for the prevention of fouling on steel structures in seawater |
| 04/23/1991 | US5009619 Corrosion protection system |
| 04/17/1991 | CN2075207U Protector for pipeline welded connection |
| 04/11/1991 | DE4030800A1 Sacrificial anode for protecting water-contg. vessels - has internal channel feeding liq. penetrating through dissolving anode wall to tapping valve to monitor anode consumption |
| 04/09/1991 | US5006786 Device for in situ monitoring of corrosion rates of polarized or unpolarized metals |
| 04/09/1991 | US5006214 Cathodic protection apparatus |
| 04/02/1991 | CA1282368C System for applied current cathodic protection of a structure |
| 03/28/1991 | DE3930686A1 Cathodic protection of ship parts - with sacrificial anode held in cage clamped between parts to avoid loosening of anode and possible disconnection |
| 03/27/1991 | CN1050228A Device for corrosion protection of shaft-tube seal |
| 03/20/1991 | EP0417663A1 Ball joint with a seal boot for automotive vehicle |
| 03/19/1991 | CA1281680C Electrolytic cell with electrode material in a non-conducting pipe |
| 02/27/1991 | EP0413726A1 Electrical apparatus. |
| 02/27/1991 | CN1049533A Cathodic protecting device for inhibiting corrossion of metal surface, preferable, sealing unit of shaft tube of ship, in liquid electrolyte, preferable in seawater |
| 02/26/1991 | CA1280842C Self-crosslinkable electrocoat resins prepared by room temperature reactions of epoxy resins and polyamines containing primary and tertiary amine groups |
| 02/06/1991 | EP0411689A1 Method for continuously monitoring the soundness of the protective covering on underground metal structures, and devices for its implementation |
| 02/06/1991 | EP0411008A1 Inhibiting corrosion in reinforced concrete |
| 02/05/1991 | US4990231 Corrosion protection system |
| 02/02/1991 | CA2021859A1 Method for continuously monitoring the soundness of the protective covering on underground metal structures, and devices for its implementation |
| 01/29/1991 | CA1279606C Cathodic protection systems |
| 01/22/1991 | US4987037 Protecting non-stainless steels against corrosion |
| 01/22/1991 | CA1279183C Conductive cathodic protection compositions and methods |
| 01/09/1991 | EP0407348A1 Mesh anode and mesh separator for use with steel reinforced concrete |
| 01/08/1991 | CA1278775C Catalytic polymer electrode for cathodic protection and cathodic protection system comprising same |
| 01/07/1991 | CA2018869A1 Mesh anode and mesh separator for use with steel-reinforced concrete |
| 12/25/1990 | US4980195 Method for inhibiting inland corrosion of steel |
| 12/12/1990 | EP0401519A1 Method for electrochemical treatment of porous building materials, particularly for drying and re-alkalization |
| 12/12/1990 | EP0401483A1 Method for electrically connecting non-corrodible anodes to the corrodible core of a power supply cable insulated with a standard insulating material |
| 12/04/1990 | US4975560 Apparatus for powering the corrosion protection system in an electric water heater |
| 11/29/1990 | DE3916847A1 Electrical corrosion protection for water container - has e.g. water heater element as anode and container wall as cathode with pole-reversal protection diode between their connectors |
| 11/28/1990 | EP0399111A1 Cathodic protection of subterranean pipes |
| 11/28/1990 | EP0229115B1 Device for the cathodic protection of metal parts from corrosion |
| 11/22/1990 | EP0398117A2 Process for rehabilitating internally reinforced concrete by removal of chlorides |
| 11/22/1990 | EP0231178B1 Corrosion protection for heat exchangers |
| 11/20/1990 | US4972066 Method and apparatus for reducing the current drain on the sacrificial anode in a water heater |
| 10/30/1990 | US4966675 Polarizable electrode |
| 10/23/1990 | US4964966 Electrode and construction thereof |
| 10/11/1990 | DE4010943A1 Anodic protection for systems carrying neutral or weakly acid water - positively polarises systems with anodic current density of 0.5 to 1.0 micro amps per square metre |
| 10/03/1990 | EP0390436A2 Novel adhesive coatings |
| 09/28/1990 | CA2012754A1 Novel adhesive coatings |
| 09/19/1990 | EP0387852A1 Corrosion inhibition apparatus for downhole electrical heating |
| 09/18/1990 | US4957616 Compression bolt; elastomer cylinder; stress distribution washer |
| 09/18/1990 | US4957612 Electroconductive core, electrical resistance intermediate layer, and active exteriors |
| 09/06/1990 | DE3935490C1 Hot water tank with corrosion protection - has piping, fittings and sacrificial aluminium anode(s) forming cage |
| 09/04/1990 | US4954233 Combination anode mount and hot water outlet utilizing a cam lock |
| 09/04/1990 | US4954172 Combination anode mount and hot water outlet for water heater |
| 08/30/1990 | DE3906208A1 Arrangement for AC-voltage limiting of cathodically protected tubular lines which carry high voltage |
| 08/22/1990 | EP0383471A1 Metal mesh and production thereof |
| 08/22/1990 | EP0383204A1 Metal mesh and production thereof |
| 08/21/1990 | US4950372 Cathodic protection system using carbosil anodes |
| 08/21/1990 | CA1273064A1 Measurement of the polarized potential of buried pipeline having impressed current cathodic protection |
| 08/16/1990 | EP0381738A1 Sacrificial anode with consumption indicator and iron core for water tanks and water heaters |
| 08/16/1990 | CA2009901A1 Cathodic protection analyzer |
| 08/14/1990 | US4948384 Marine propulsion device anode arrangement |
| 08/14/1990 | CA2010026A1 Metal mesh and production thereof |
| 08/14/1990 | CA2010007A1 Metal mesh and production thereof |
| 08/08/1990 | EP0380602A1 Anode for cathodic protection against corrosion |
| 08/07/1990 | US4946570 Ceramic coated strip anode for cathodic protection |
| 08/02/1990 | DE4000618A1 Limiting device for cathodic corrosion protection systems - using low internal resistance earthing connecting for buried high voltage conduits with cathodic protection systems |
| 08/02/1990 | DE3902400A1 Electric water heater |
| 08/02/1990 | DE3902345A1 Electrical water heater |
| 07/26/1990 | WO1990008204A1 Holder device for marine anodes |
| 07/17/1990 | US4941775 Cathodic protection of critical offshore marine structure critical components by making the critical component noble (passive) to the balance of the platform |
| 07/10/1990 | US4940944 Cathodic protection analyzer in which the fundamental and odd harmonics of a power line frequency are removed |
| 06/26/1990 | US4936969 Water tank cathodic protection system |
| 06/13/1990 | EP0222768B1 Method and apparatus for accomplishing an underwater weld joint |
| 06/12/1990 | US4932795 Electrically conductive plastic bushings for marine propulsion devices |
| 06/06/1990 | CN1042726A Coating product made up of metallic zinc dispersion for cathodic protection by galvanising film |
| 06/05/1990 | US4931213 Reducing titania with metal-intercalated graphite; corrosion resistant ceramic recovered |
| 06/05/1990 | US4931156 Distributive anode coating |
| 05/01/1990 | US4921588 Cathodic protection using carbosil anodes |
| 04/25/1990 | EP0364630A1 Method of protecting the hulls of marine vessels from fouling |