| Patents for C23F 13 - Inhibiting corrosion of metals by anodic or cathodic protection (3,652) |
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| 04/24/1990 | US4919201 Corrosion inhibition apparatus for downhole electrical heating |
| 04/17/1990 | US4917966 Galvanic protection of steel with zinc alloys |
| 04/10/1990 | US4915808 Anode and capsule assembly for automotive cathodic protection |
| 04/10/1990 | US4915053 Method and apparatus for cathodic protection of marine vessels |
| 03/28/1990 | EP0359876A1 Oxygen-generating electrode and method for the preparation thereof |
| 03/27/1990 | US4910865 Method of forming an anode cap assembly |
| 03/21/1990 | CN1040633A Method of reducing weight loss of lead and lead-alloy anodes in chromium electroplating bath |
| 03/21/1990 | CN1007257B Solid electrolyte for protecting cathode of overhead metal pipe and its process |
| 03/14/1990 | EP0357925A1 Sacrificial anode with consumption indication and iron core for water reservoirs and water heaters |
| 03/14/1990 | EP0225343B1 Expanded metal mesh and coated anode structure |
| 03/07/1990 | EP0357326A2 Inhibiting corrosion of lead or lead-alloy anodes in a chromium electroplating bath |
| 03/07/1990 | EP0357094A1 Anode for cathodic protection |
| 02/28/1990 | EP0197981B1 Catalytic polymer electrode for cathodic protection and cathodic protection system comprising same |
| 02/22/1990 | WO1990001571A1 Sacrificial anode with consumption indicator and iron core for water tanks and water heaters |
| 02/22/1990 | WO1990001570A1 Anode for cathodic protection against corrosion |
| 02/15/1990 | DE3822168A1 Cathodic corrosion protection |
| 02/13/1990 | US4900410 Method of installing a cathodic protection system for a steel-reinforced concrete structure |
| 01/31/1990 | EP0353151A1 Process and device for supervising the cathodic protection of a buried or immersed metal structure |
| 01/16/1990 | US4894135 Electrolyte IR voltage compensator for cathodic protection systems or the like |
| 01/02/1990 | US4890755 Internal corrosion protection of metal tanks |
| 12/13/1989 | EP0345607A1 Corrosion protection element for parts, particularly automotive parts, to be connected by screws, bolts, etc. |
| 12/05/1989 | US4885045 Brine resistance, castable, high electrochemical capacity; controlled grain size |
| 11/29/1989 | EP0343188A1 Electrically conductive titanium suboxides. |
| 11/14/1989 | US4880517 Conductor of carbon-filled thermoplastic resin having catalytic valve metal particles pressed onto its surface; durability; low energy; subterranean and underwater structures |
| 11/02/1989 | WO1989010438A1 Electrical apparatus |
| 11/02/1989 | WO1989010435A1 Inhibiting corrosion in reinforced concrete |
| 11/01/1989 | CN2046893U Overhead metal pipe cathode protective circuit using montmorillonite as solid electrolyte |
| 10/31/1989 | US4877354 Pipeline anode |
| 10/17/1989 | US4874487 Corrosion protection |
| 10/11/1989 | EP0222829B1 Cathodic protection system for a steel-reinforced concrete structure and method of installation |
| 10/10/1989 | US4872860 Sacrificial anode for marine propulsion units |
| 09/26/1989 | CA1260324A1 Corrosion protection for mooring and riser elements of a tension leg platform |
| 09/20/1989 | EP0333700A1 Electrode |
| 09/20/1989 | CN1035685A Apparatus and method for electrical anticorrosion of total-titanium heat-exchanger |
| 09/13/1989 | EP0332337A2 Electrode and construction thereof |
| 09/05/1989 | US4863578 Automatic disconnecting of core after anode consumption |
| 08/30/1989 | CN1035141A Cathodic corrosion-preventing device for sternshaft tube of ship |
| 08/29/1989 | US4861449 Sacrificial electrodes for protection of buried steel |
| 08/09/1989 | EP0326763A2 Cathodic protection method and compositions |
| 08/08/1989 | US4855029 Integral cathodic protection device |
| 08/08/1989 | US4855027 Carbosil anodes |
| 08/08/1989 | US4855024 Mesh electrodes and clips for use in preparing them |
| 07/19/1989 | EP0324440A1 Cathodic protection apparatus in systems for the circulation of corrosive liquids |
| 06/29/1989 | WO1989005953A1 Electrically grounding of non-metallic parts |
| 06/15/1989 | DE3740679A1 Vorrichtung zum kathodischen korrosionsschutz eines bauteils an einem stevenrohr eines schiffes Apparatus for cathodic corrosion protection of a component to a steve tube of a ship |
| 06/14/1989 | EP0319561A1 Electrode arrangement |
| 06/06/1989 | US4836768 Metal, or alloy, matrix with corrosion resistant coating |
| 05/30/1989 | US4835355 Method, apparatus and element for accomplishing an underwater weld joint |
| 05/16/1989 | US4830925 Cathodic protection method and compositions |
| 05/16/1989 | US4830724 Stamped metal anode cap assembly |
| 05/09/1989 | US4828665 Cathodic protection system using carbosil anodes |
| 05/02/1989 | US4826657 Galvanic coating with ternary alloys containing aluminum and magnesium |
| 05/02/1989 | US4826577 Automatic surveillance |
| 05/02/1989 | CA1253456A1 Electrode with titanium or niobium substrat, tantalum and anodically active layers |
| 04/18/1989 | US4823072 Measurement of the polarized potential of buried pipeline having impressed current cathodic protection |
| 03/16/1989 | DE3729304A1 Corrosion indicator |
| 03/15/1989 | CN1031724A Process for treatment of increasing corrosion resistance of rolled steel |
| 03/14/1989 | US4812212 Apparatus for cathodically protecting reinforcing members and method for installing same |
| 03/08/1989 | EP0305914A2 Process for the treatment of rolled steel for increasing corrosion resistance |
| 03/08/1989 | CN1003525B Overhead metallic pipe cathode protector |
| 03/01/1989 | CN1031403A New techhique for protection against stray currents |
| 02/21/1989 | US4806272 Conductive cathodic protection compositions and methods |
| 02/21/1989 | US4806212 Thermoplastic resin mixture of carbon black, graphite, metal oxide or polymer; masonry drying |
| 02/16/1989 | DE3726090A1 Sacrificial anode having a consumption indication for water containers and water heaters |
| 02/08/1989 | CN2032197U Computer constant potential meter |
| 01/24/1989 | US4800007 Corrosion protection for heat exchangers |
| 01/17/1989 | US4798658 Especially for vehicles |
| 01/17/1989 | US4798657 Cathodic protection system |
| 01/10/1989 | CA1248494A1 Apparatus for stimulating removal of electrolytic energy from fluids |
| 01/03/1989 | US4795539 System and use thereof for collecting chemical-physical, electrochemical and mechanical parameters for designing and/or operating cathodic protection plants |
| 12/29/1988 | WO1988010325A1 Electrode arrangement |
| 12/06/1988 | CA1246004A1 Marine propulsion device including cathodic protection |
| 12/06/1988 | CA1245916A1 Marine propulsion device lower unit including propeller bearing member anode |
| 11/24/1988 | DE3716081A1 Device for continuously providing a corrosion protection in a steel-sheet heating-oil storage container |
| 11/23/1988 | EP0292428A2 Anode ribbon system for cathodic protection of steelreinforced concrete |
| 11/22/1988 | US4786388 Ground electrode backfill composition, anode bed and apparatus |
| 11/22/1988 | US4786383 Cathodic protection system for a water heater tank |
| 11/17/1988 | DE3714977A1 Method and device for building up a cathodic corrosion-prevention potential on buried external-gas-pressure cables |
| 11/15/1988 | US4784823 Nuclear fuel or radioactive waste storage |
| 11/03/1988 | WO1988008462A1 Measurement of the polarized potential of buried pipeline having impressed current cathodic protection |
| 11/01/1988 | USH544 Impressed current cathodic protection system employing cobalt spinel structured anode |
| 10/25/1988 | US4780189 Electronic control circuit for a cathodic protection system |
| 10/25/1988 | CA1243627A2 Constant voltage anode system |
| 10/12/1988 | EP0285747A1 Process and apparatus for sustaining the cathodic protection of metal surfaces |
| 10/11/1988 | US4776392 Heat exchanger |
| 09/27/1988 | US4773977 Anode mounting construction for a water heater |
| 09/20/1988 | US4772344 Method of protecting the hulls of marine vessels from fouling |
| 08/31/1988 | EP0280427A1 Electrodes for use in electrochemical processes |
| 08/30/1988 | US4767512 Process and apparatus for preventing oxidation of metal by capactive coupling |
| 07/28/1988 | WO1988005427A1 Electrically conductive titanium suboxides |
| 07/28/1988 | DE3700826A1 Anode material for operating an electroflotation cell for the purification of waste waters heavily contaminated with corrosion inhibitors and of alkaline cleaning solutions |
| 07/05/1988 | US4755267 Determining polarization potential of metal structure in contact with corroding electrolyte |
| 06/22/1988 | EP0272190A1 Cathodic pigment for the protection of metallic surfaces against corrosion, and process for preparing the same |
| 06/22/1988 | EP0272075A1 Protection of joints in elongate substrates |
| 06/21/1988 | US4752368 Circuit including rectifier, alternating current source, impedance, and structure |
| 06/16/1988 | WO1988004334A1 Improved process of preventing oxidation of metal by capacitive coupling |
| 05/11/1988 | EP0266405A1 Concrete ballast block with imbedded or attached anodes for cathodic protection of the bolts and their fittings. |
| 05/10/1988 | US4743142 Polyethmene resin layer |
| 05/10/1988 | CA1236423A1 Reinforced concrete structure with anode coating of graphite and methacrylate |
| 05/03/1988 | CA1236046A1 Corrosion protection system comprising electrode with conductive core and conductive polymer layer |