Consolidated Natural Gas Service Company, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F23J REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 116
 
  
 
F25B REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS 167
 
  
 
F25J LIQUEFACTION, SOLIDIFICATION, OR SEPARATION OF GASES OR GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT 128

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5915310 Apparatus and method for NO.sub.x reduction by selective injection of natural gas jets in flue gasJul 27, 95Jun 29, 99[F23J]
5630328 Natural gas conditioning facilitySep 22, 95May 20, 97[F25J]
RE31281 Heat pump systemOct 25, 79Jun 21, 83[F25B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5949153 Multi-engine controllerExpiredMar 06, 97Sep 07, 99[H02J]
D370606 Street keyExpiredJul 22, 94Jun 11, 96[]
5507146 Method and apparatus for condensing fugitive methane vaporsExpiredOct 12, 94Apr 16, 96[F25J]
5495829 Water heater with thermoelectric module and through-chamber heat sinkExpiredSep 14, 94Mar 05, 96[F22B]
5216876 Method for reducing nitrogen oxide emissions from gas turbinesExpiredNov 05, 90Jun 08, 93[F02C, F02G]
4910414 Bottoming cycleExpiredJan 03, 89Mar 20, 90[F25B]
4850862 Porous body combustor/regeneratorExpiredMay 03, 88Jul 25, 89[F27D]
4831830 Fuel-fired chilling systemExpiredOct 02, 87May 23, 89[F25D]
4575948 Pneumatic transport and heat exchange systemsExpiredFeb 17, 83Mar 18, 86[F26B, F28D]
4510756 CogenerationExpiredNov 08, 82Apr 16, 85[B60H, H02P, F24D]
4501253 On-board automotive methane compressorExpiredDec 13, 82Feb 26, 85[F02B]
4455863 Sonic detection of gas leaks in underground pipesExpiredMar 29, 82Jun 26, 84[G01M]
4432791 Ceramic radiant tube heated aluminum melter and method of melting aluminiumExpiredMar 04, 83Feb 21, 84[F27B, C21C]
4312188 Heat pump systemExpiredNov 07, 79Jan 26, 82[F25B]

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