Tennessee Valley Authority

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C05B PHOSPHATIC FERTILISERS56
 
  
 
B03D FLOTATION; DIFFERENTIAL SEDIMENTATION 411
 
  
 
B01D SEPARATION 2132
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF277
 
  
 
C05C NITROGENOUS FERTILISERS213
 
  
 
C09K MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR293
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 2204
 
  
 
B03B SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS 18
 
  
 
C01F COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS 120
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 154

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9459600 Method and automation system for processing information extractable from an engineering drawing file using information modeling and correlations to generate output dataNov 09, 12Oct 04, 16[G05B, G06F]
7390428 Compositions with nano-particle size conductive material powder and methods of using same for transferring heat between a heat source and a heat sinkDec 07, 04Jun 24, 08[C09K]
6858157 Compositions with nano-particle size diamond powder and methods of using same for transferring heat between a heat source and a heat sinkApr 17, 03Feb 22, 05[C09K]
6136281 Method to control mercury emissions from exhaust gasesMar 31, 99Oct 24, 00[B01D]
5988081 Method and system for the disposal of coal preparation plant waste coal through slurry co-firing in cyclone-fired boilers to effect a reduction in nitrogen oxide emissionsJul 22, 97Nov 23, 99[F23B, F23D]
5879948 Determination of total mercury in exhaust gasesMay 12, 97Mar 09, 99[G01N]
5863433 Reciprocating subsurface-flow constructed wetlands for improving wastewater treatmentDec 02, 96Jan 26, 99[C02F]
5800077 Method and apparatus for monitoring a hydroelectric facility trash rackAug 19, 96Sep 01, 98[E02B]
5750992 Method to compensate for interferences to mercury measurement in gasesSep 18, 96May 12, 98[G01N]
5069695 Tent-free apparatus for particulate contamination controlApr 15, 91Dec 03, 91[B01D]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2014/0060,620 SOLAR PHOTOVOLTAIC PANEL COOLING SYSTEM AND METHODAbandonedAug 30, 13Mar 06, 14[H01L]
7633284 Method and apparatus for managing ultracapacitor energy storage systems for a power transmission systemExpiredMar 08, 06Dec 15, 09[H02J, G01R]
7294327 Multi-stage cryogenic acid gas removalExpiredMar 21, 06Nov 13, 07[C01B]
7230837 Method and circuit for cascaded pulse width modulationExpiredMar 27, 06Jun 12, 07[H02M]
7111407 Vertical shaft alignment toolExpiredNov 30, 04Sep 26, 06[G01C]
6805844 Reactor vessel, method and system for treating, sampling, and transporting toxic wasteExpiredMar 03, 00Oct 19, 04[A62D, B01J, B09B]
6751959 Simple and compact low-temperature power cycleExpiredDec 09, 02Jun 22, 04[F01K, F03G]
6599423 High-efficiency processes for destruction of contaminantsExpiredAug 26, 02Jul 29, 03[C02F]
6567795 Artificial neural network and fuzzy logic based boiler tube leak detection systemsExpiredDec 01, 00May 20, 03[G06F]
6490506 Method and apparatus for monitoring hydroelectric facility maintenance and environmental costsExpiredMay 21, 99Dec 03, 02[G05D]
6461510 High-efficiency processes for destruction of contaminantsExpiredJul 24, 00Oct 08, 02[C02F]
6357389 Control system for enhancing fish survivability in a hydroelectric power generation installationExpiredMar 14, 00Mar 19, 02[A01K, H04B]
6269287 Method and apparatus for monitoring a hydroelectric facility trash rack and optimizing performanceExpiredSep 01, 98Jul 31, 01[H02J]
6192352 Artificial neural network and fuzzy logic based boiler tube leak detection systemsExpiredFeb 20, 98Feb 20, 01[G06F]
5976348 In situ remediation of soils containing organic contaminants using the electromigration of peroxysulfate ionsExpiredMar 30, 98Nov 02, 99[F21B]
5953926 Heating, cooling, and dehumidifying system with energy recoveryExpiredAug 05, 97Sep 21, 99[F25B]
5953227 Method and apparatus for monitoring hydroelectric facility performance costsExpiredAug 19, 96Sep 14, 99[G05B]
5914055 Rotor repair system and techniqueExpiredApr 24, 98Jun 22, 99[B23K]
5837029 Dried particulate hydrophilic gel as micronutrient delivery systemExpiredFeb 03, 97Nov 17, 98[C05G, C05D]
5632799 Dried particulate, hydrophilic gel as micronutrient delivery systemExpiredSep 23, 94May 27, 97[C05G, C05D]

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