| Patents for C25C 3 - Electrolytic production, recovery or refining of metals by electrolysis of melts (10,924) |
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| 03/03/1999 | CN1209469A Electrolytic anode plate |
| 03/02/1999 | US5876585 Anode clamp |
| 03/02/1999 | US5876584 Method of producing aluminum |
| 02/24/1999 | CN2308610Y Aluminum electric tank gas collecting device |
| 02/23/1999 | US5873993 Selective electrolysis of feldspar dissolved in fluoride within furnace where carbon dioxide evolved from carbon anode at bottom of the melt floats purified silicon to the melt surface without contamination for recovery |
| 02/23/1999 | CA1340408C Protection coating for prebaked anode logs and their emerging part |
| 02/06/1999 | CA2242122A1 Anode, a process for the manufacture thereof and a process for the production of aluminum |
| 02/02/1999 | US5865981 Aluminium-immersed assembly and method for aluminium production cells |
| 02/02/1999 | US5865980 Mixed metal oxide |
| 01/28/1999 | DE19731349A1 Dissolving metal oxide, metal hydroxide or metal which is not easily soluble |
| 01/21/1999 | WO1999002764A1 A drained cathode cell for the production of aluminium |
| 01/21/1999 | WO1999002763A1 Aluminium production cell design |
| 01/21/1999 | CA2295497A1 Aluminium production cell design |
| 01/20/1999 | EP0892085A2 Drained cathode aluminium production cells |
| 01/19/1999 | CA2012009C Process for the electrolytic production of magnesium |
| 01/13/1999 | CN2303853Y Gas cleaning and recovering apparatus |
| 01/13/1999 | CN1204700A Metal lithium electrolytic bath |
| 01/07/1999 | WO1998020188A3 Apparatus and method for treating the cell lining of an aluminum electrowinning cell |
| 01/05/1999 | US5855758 Cathode connection for aluminium smelter pot and method |
| 01/05/1999 | US5855757 Fused salt electrolyte |
| 12/30/1998 | WO1998059094A1 Plant for removing fluor containing waste gases |
| 12/29/1998 | US5853560 Electrolytic magnesium production process using mixed chloride-fluoride electrolytes |
| 12/23/1998 | EP0886259A1 Method and apparatus for biasing an LCD screen depending on environmental illumination |
| 12/22/1998 | US5851677 Coating composition for carbon-containing products and said coating |
| 12/22/1998 | CA2165257C Method and apparatus for electrolytic reduction of fine particle alumina with porous-cathode cells |
| 12/10/1998 | WO1998055426A1 Production of heat-treated carbon bodies |
| 12/10/1998 | CA2291272A1 Production of heat-treated carbon bodies |
| 12/09/1998 | CN2299877Y Point-type blanking aluminium self-baking cell |
| 12/02/1998 | EP0881200A1 Lining for electrolytic cell |
| 11/26/1998 | WO1998053120A1 Aluminium production cell and cathode |
| 11/26/1998 | CA2287362A1 Aluminium production cell and cathode |
| 11/25/1998 | EP0763151B1 Method for the production of silicium metal, silumin and aluminium metal |
| 11/25/1998 | CN2298263Y Electric tank |
| 11/17/1998 | CA2098559C Reducing agent regeneration system |
| 11/11/1998 | CN1198482A Preparation of battery grade mixed rareearth metal by rareearth chloride molten-salt electrolysis and its equipment |
| 11/05/1998 | WO1998049373A1 Metal magnesium electrolyzer |
| 11/05/1998 | WO1998049371A1 Apparatus for producing titanium crystal and titanium |
| 11/05/1998 | WO1998049370A1 Method for producing titanium crystal and titanium |
| 11/05/1998 | WO1998049357A1 Titanium crystal and titanium |
| 11/04/1998 | EP0874789A1 Protection of porous bodies against oxidation |
| 11/04/1998 | EP0649912B1 Method for collecting valuable metal from nickel-hydrogen secondary cell |
| 11/04/1998 | CN2296347Y Lining of aluminium electrolytic bath |
| 11/04/1998 | CN2296346Y Lateral irregular carbon block for aluminium electrolytic bath |
| 11/04/1998 | CN1197852A Electrolytic manganese metal producing process without sulphuric acid added |
| 11/03/1998 | US5830335 Busbar arrangement for electrolytic cells |
| 11/03/1998 | CA2010324C Aluminium smelting cells |
| 10/28/1998 | EP0873285A1 Carbon bodies resistant to deterioration by oxidizing gases |
| 10/27/1998 | US5827347 Process for the recovery of lead from spent batteries |
| 10/21/1998 | CN1040346C Alumina supply apparatus for electrolytic tank |
| 10/20/1998 | CA2003154C Carbon electrode with gastight, temperature stable protective globe |
| 10/15/1998 | WO1998045498A1 Substrate body with a protective coating |
| 10/15/1998 | WO1998045497A1 Method for producing a coating containing titanium boride |
| 10/15/1998 | DE19714433A1 Verfahren zur Herstellung einer titanboridhaltigen Beschichtung A process for preparing a coating titanboridhaltigen |
| 10/15/1998 | DE19714432A1 Trägerkörper mit einer Schutzbeschichtung The carrier body with a protective coating |
| 10/14/1998 | EP0870078A1 A method for the use of material containing carbon in the electrolytic production of aluminium |
| 10/14/1998 | CN1196098A Electrochemical process for preparation of sodium and aluminium chloride |
| 09/29/1998 | US5814127 Vent gas from an aluminum electrolysis cell; removing inorganic fluorides with a caustic scrubber; contacting purified vent gas with a membrane selectively permeable to tetrafluoromethane and perfluoroethane |
| 09/22/1998 | US5810993 Electrolytic production of neodymium without perfluorinated carbon compounds on the offgases |
| 09/22/1998 | CA2040159C Arrangement for closing the top of a soderberganode in an electrolytic aluminium reduction cell |
| 09/17/1998 | DE19709648A1 Crust breaking unit |
| 09/11/1998 | WO1998030738A3 Method and apparatus for metal extraction and sensor device related thereto |
| 09/09/1998 | EP0644862B1 Carbon masses in particular for use in aluminium production cells |
| 09/02/1998 | CN2289804Y Alumium cell point-type blanking purifying reactor |
| 08/25/1998 | CA2147733C Fused fluoride electrolytes for magnesium oxide electrolysis in the production of magnesium metal |
| 08/19/1998 | CN2288187Y 多功能锤头 Multifunction hammer |
| 08/18/1998 | CA2173925C Anode bar for the production of molten metal by electrolysis |
| 08/18/1998 | CA2075892C Electrolytic reduction of alumina |
| 08/18/1998 | CA2010322C Process for controlling aluminium smelting cells |
| 08/11/1998 | US5794112 Controlled atmosphere for fabrication of cermet electrodes |
| 08/11/1998 | CA2150374C Structural parts for electrolytic reduction cells for aluminium |
| 08/06/1998 | WO1998033956A1 Process for the electrolytic production of metals |
| 07/30/1998 | DE19702783A1 Large carbon component production giving improved quality |
| 07/22/1998 | CN1188162A Rare earth molten-salt electrolysis ceramic anode and preparing method thereof |
| 07/22/1998 | CN1039248C Middle feeding and exhausting method for self-baking anode Al refining electrolytic bath |
| 07/16/1998 | WO1998030738A2 Method and apparatus for metal extraction and sensor device related thereto |
| 07/14/1998 | US5779875 Propulsion of alumina into electrolyte melt; imparting mechanical oscillations and translatory motion; efficiency; noncrusting |
| 07/07/1998 | US5776426 Using caustic liquid and lime |
| 07/02/1998 | WO1998028062A1 Process for recovering cf4 and c2f6 from a gas |
| 06/25/1998 | WO1998017842A3 Slurry and method for producing refractory boride bodies and coatings for use in aluminium electrowinning cells |
| 06/24/1998 | EP0848764A1 Electrolytic method for the production of sodium and aluminium chloride |
| 06/24/1998 | EP0783468B1 Cryolite resistant refractory |
| 06/24/1998 | CN1185815A Improved lining for aluminum production furnace |
| 06/18/1998 | WO1998026113A1 Spent anode cleaning apparatus |
| 06/17/1998 | EP0847377A1 The prouction of bodies of refractory borides for use in aluminium electrowinning cells |
| 06/02/1998 | US5759382 Injection of powdered material into electrolysis cells |
| 05/27/1998 | EP0843746A1 Hard and abrasion resistant surfaces protecting cathode blocks of aluminium electrowinning cells |
| 05/27/1998 | EP0843745A1 Maintaining protective surfaces on carbon cathodes in aluminium electrowinning cells |
| 05/19/1998 | US5753382 Immersing a prebaked carbon anode of an electrolytic cell for production of aluminum by electrolysis of alumina in molten fluoride electrolyte containing boron, aluminum and calcium compounds to improve oxidation resistance |
| 05/19/1998 | US5753163 Production of bodies of refractory borides |
| 05/19/1998 | US5752772 Sensor arrangement for temperature measurement |
| 05/14/1998 | WO1998020188A2 Apparatus and method for treating the cell lining of an aluminum electrowinning cell |
| 05/07/1998 | DE19645251A1 Apparatus for measured delivery of alumina into electrolysis cell |
| 05/06/1998 | EP0701635B1 Treating prebaked carbon anodes for aluminium production |
| 05/06/1998 | CN1180679A Antierosion fireproof material for aluminium electrolyzer |
| 05/05/1998 | US5746895 Simultaneous heat treatment of a layered composite of two precursors; protective coating, corrosion resistance |
| 04/30/1998 | WO1998017843A1 The start-up of aluminium electrowinning cells |
| 04/30/1998 | WO1998017842A2 Slurry and method for producing refractory boride bodies and coatings for use in aluminium electrowinning cells |
| 04/30/1998 | CA2269550A1 Slurry and method for producing refractory boride bodies and coatings for use in aluminium electrowinning cells |
| 04/30/1998 | CA2268931A1 The start-up of aluminium electrowinning cells |
| 04/29/1998 | EP0838540A1 Process for changing spent anodes in Aluminium-Electrolysis vats and apparatus for collecting emitted gases during this process |