RIO TINTO ALCAN INTERNATIONAL LIMITED

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C25C PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR 223
 
  
 
C22C ALLOYS 1755
 
  
 
B22D CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 643
 
  
 
C22B PRODUCTION OR REFINING OF METALS 622
 
  
 
C22F CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS 631
 
  
 
B01D SEPARATION 5129
 
  
 
C01F COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS 417
 
  
 
B30B PRESSES IN GENERAL; PRESSES NOT OTHERWISE PROVIDED FOR 220
 
  
 
B65G TRANSPORT OR STORAGE DEVICES, e.g. CONVEYERS FOR LOADING OR TIPPING; SHOP CONVEYER SYSTEMS; PNEUMATIC TUBE CONVEYERS 265
 
  
 
F27D DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE 223

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0087,510 Aqua-Catalysed Chalked Lime Scrubbing Processes and SystemsJun 02, 15Mar 30, 17[B01D]
2017/0043,548 Screw Press with Filter PlatesApr 09, 15Feb 16, 17[B30B, B01D]
2017/0001,129 Settler for Decanting Mineral Slurries & Method for Separating Clarified Liquid from Thickened Slurry of Said Mineral SlurriesNov 28, 14Jan 05, 17[C01F, B01D]
2017/0002,448 ALUMINUM ALLOY COMBINING HIGH STRENGTH AND EXTRUDABILITY, AND LOW QUENCH SENSITIVITYNov 26, 14Jan 05, 17[C22F, B21C, C22C]
2016/0319,400 Aluminum Casting Alloy with Improved High-Temperature PerformanceDec 12, 14Nov 03, 16[C22F, B22D, F01D, C22C]
2016/0186,344 Electrolytic Cell Intended for the Production of Aluminium and Electrolytic Smelter Comprising this CellJul 30, 14Jun 30, 16[C25C]
2016/0138,138 ALUMINUM ALLOY COMPOSITION WITH IMPROVED ELEVATED TEMPERATURE MECHANICAL PROPERTIESJun 19, 14May 19, 16[B22D, C22C]
2015/0344,988 PROCESS FOR REDUCING OF LEACHABLE FLUORIDES AND CONTROLLING PH OF ALUMINUM WASTE PRODUCTSDec 19, 13Dec 03, 15[C22B, B09B]
2015/0275,338 ADDITIVES FOR IMPROVING THE CASTABILITY OF ALUMINUM-BORON CARBIDE COMPOSITE MATERIALNov 19, 13Oct 01, 15[B22D, C22C]
2014/0377,128 ALUMINUM ALLOY COMPOSITION WITH IMPROVED ELEVATED TEMPERATURE MECHANICAL PROPERTIESJun 19, 14Dec 25, 14[B22D, C22C]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9840754 Rotary injector and process of adding fluxing solids in molten aluminumMay 23, 14Dec 12, 17[C22B, F27D, B01F, C22C]
9631289 Dry cell start-up of an electrolytic cell for aluminum productionMay 18, 12Apr 25, 17[C25C]
9631879 Aluminum alloy for extrusion and drawing processesJul 19, 13Apr 25, 17[F28F, C22F, C22C]
9598783 Aluminum smelter comprising electrical conductors made from a superconducting materialJul 10, 12Mar 21, 17[C25C, C25B]
9592551 Metal transfer troughFeb 15, 13Mar 14, 17[B22D]
9371594 Device for extracting short-circuiting wedges designed for switching in an electrolysis cell for the production of aluminumJun 23, 11Jun 21, 16[C25C, B23P]
9238184 Apparatus and method for refining a process liquor by gravity settlingAug 10, 11Jan 19, 16[C01F, B01D]
D742427 Impeller for a rotary injectorMar 27, 14Nov 03, 15[1503]
9090413 Potential fluidization device for conveying powder materials in a hyperdense bedOct 19, 10Jul 28, 15[C25C, B65G]
8961749 Electrical connection device, for connecting between two successive cells of a series of cells for the production of aluminiumSep 06, 11Feb 24, 15[C25C, H01H]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2015/0114,833 PREHEATING CONNECTORAbandonedApr 12, 13Apr 30, 15[C25C, H01R]
2014/0241,818 METHOD AND DEVICE FOR DISPENSING A FLUIDIZABLE MATERIAL AND INSTALLATION INCLUDING SUCH A DEVICEAbandonedOct 01, 12Aug 28, 14[B65G]
2014/0209,457 ALUMINUM SMELTER COMPRISING ELECTRICAL CONDUCTORS MADE FROM A SUPERCONDUCTING MATERIALAbandonedJul 10, 12Jul 31, 14[C25C]
2014/0138,240 ALUMINUM SMELTER INCLUDING CELLS WITH CATHODE OUTPUT AT THE BOTTOM OF THE POT SHELL AND CELL STABILIZING MEANSAbandonedJul 10, 12May 22, 14[C25C]
8628738 Bayer process for producing alumina trihydrate, said process comprising a step in which the supersaturated liquor is filtered at high temperature before decompositionExpiredJul 29, 09Jan 14, 14[C01F]
2013/0319,585 Aluminum Alloy Combining High Strength, Elongation and ExtrudabilityAbandonedMay 30, 13Dec 05, 13[C22F, C22C]
2013/0168,326 FLOCCULENT ADDITION AND MIXING RATE FOR SEPARATING A SLURRYAbandonedJul 07, 11Jul 04, 13[B01D]
2013/0098,755 DEVICE FOR EXTRACTING SHORT-CIRCUITING WEDGES WHEN SWITCHING IN AN ELECTROLYSIS CELL FOR THE PRODUCTION OF ALUMINUMAbandonedJun 23, 11Apr 25, 13[C25C]
8404090 Multi-layer cathode blockExpiredApr 30, 09Mar 26, 13[C25B]
8366891 Metallic oxygen evolving anode operating at high current density for aluminum reduction cellsExpiredSep 01, 09Feb 05, 13[C25C, C25B]
2012/0152,985 REMOVABLE SPOUT FOR A HOPPERAbandonedJun 22, 10Jun 21, 12[B65D]
8163231 Apparatus and a method for tapping metalExpiredOct 29, 07Apr 24, 12[F16L, C25C]
8093442 Electrochemical removal of dissociable cyanidesExpiredJul 18, 08Jan 10, 12[A62D]
2011/0311,930 PROCESS AND CONTROL SYSTEM FOR A CARBONACEOUS BLOCK BAKING FACILITYAbandonedDec 08, 09Dec 22, 11[F27B, F27D]
7935241 Slurries for producing aluminium-based coatingsExpiredMar 06, 06May 03, 11[C25C]
2009/0266,530 Aluminum Alloy For Extrusion And Drawing ProcessesAbandonedJul 31, 08Oct 29, 09[B23K, F28F, C22F, C22C]
2007/0212,175 Device and Method for Pneumatic Conveying of Bulk Materials in a Dense Flow ProcessAbandonedJul 22, 05Sep 13, 07[B65G]
6830723 Apparatus for treating molten metal having a sealed treatment zoneExpiredMar 07, 03Dec 14, 04[C21C]
5130639 Apparatus for particle determination in liquid metalsExpiredMay 17, 90Jul 14, 92[G01N]
5081869 Method and apparatus for the measurement of the thermal conductivity of gasesExpiredDec 11, 89Jan 21, 92[G01N]

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