NATIONAL TANK COMPANY

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 15119
 
  
 
C10G CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION 557
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 253
 
  
 
F25J LIQUEFACTION, SOLIDIFICATION, OR SEPARATION OF GASES OR GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT 227
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF178
 
  
 
C10L FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUEFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS 141
 
  
 
C25B ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR 134
 
  
 
E21B EARTH OR ROCK DRILLING 195
 
  
 
F16L PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL169

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8591714 High velocity electrostatic coalescing oil/water separatorMar 14, 08Nov 26, 13[C10G, B01D]
7942162 Tee flow splitterJan 14, 08May 17, 11[F16L]
7931719 Revolution vortex tube gas/liquids separatorDec 03, 07Apr 26, 11[B01D]
7758738 Separating multiple components of a streamMar 14, 08Jul 20, 10[C10G, B01D]
7531159 S from sour gasJul 26, 06May 12, 09[C01B, C12P, C10L, B01D]
7351320 Multiple frequency electrostatic coalescenceFeb 15, 05Apr 01, 08[C10G]
7157007 Vertical gas induced flotation cellJun 20, 03Jan 02, 07[C02F]
7152430 Method of separating CO.sub.2 from hydrocarbon gasMar 09, 04Dec 26, 06[F25J]
7124605 Membrane/distillation method and system for extracting CO2 from hydrocarbon gasOct 30, 03Oct 24, 06[F25J]
7008464 Dehydration of wet gas utilizing intimate contact with a recirculating deliquescent brineAug 08, 03Mar 07, 06[B01D]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8414756 Removal of glycerin from biodiesel using an electrostatic processExpiredOct 30, 08Apr 09, 13[B03C, C02F]
6106276 Gas burner system providing reduced noise levelsExpiredJun 17, 97Aug 22, 00[F23D]
5921206 Heater for process fluidsExpiredAug 04, 98Jul 13, 99[F22B]
5714068 Inlet device for large oil field separatorExpiredSep 03, 96Feb 03, 98[C02F]
5656173 Method of removing dispersed oil from an oil in water emulsion employing aerated solutions within a coalescing mediaExpiredMar 05, 96Aug 12, 97[C02F, B01D]
5575896 Method and apparatus for oil/water separation using a dual electrode centrifugal coalescerExpiredJan 31, 95Nov 19, 96[C10G]
5543027 Apparatus for electrostatic liquid/liquid contactorExpiredJul 20, 94Aug 06, 96[C02F, B01D]
5429496 Portable flare boom capable of being easily raised and lowered to change the flaring assemblyExpiredJul 20, 93Jul 04, 95[F23D]
5411651 Method for electrostatic liquid/liquid contactorExpiredMar 01, 93May 02, 95[C10G, C02F]
5221523 Contaminant control system for natural gas dehydrationExpiredOct 29, 90Jun 22, 93[B01D]
4804453 Resolution of emulsions with multiple electric fieldsExpiredJun 07, 82Feb 14, 89[C10G, B01D]
4755194 Method for introducing a mixture of gas and liquid into a separator vesselExpiredJun 29, 87Jul 05, 88[B01D]
4702815 Distributed charge composition electrodes and desalting systemExpiredMay 05, 86Oct 27, 87[C10G, B01D]
4648806 Gas compressorExpiredJun 12, 85Mar 10, 87[F04B, F16C]
4624704 Selective recovery of zinc from metal containing brinesExpiredOct 02, 85Nov 25, 86[C22B]
4613303 Combustion air control in an in-line flame arrestorExpiredAug 10, 84Sep 23, 86[F23D]
4606801 Electrostatic mixer/separatorExpiredJul 16, 85Aug 19, 86[C10G, B01D]
4604196 Marine separator for fluids of different densitiesExpiredJul 16, 85Aug 05, 86[B01B]
4597874 Treatment of oil well productionExpiredMar 07, 85Jul 01, 86[B01D]
4581120 Method and apparatus for separating oilfield emulsionsExpiredSep 19, 84Apr 08, 86[B03C, C10G, B01D]

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