NORTHERN RESEARCH AND ENGINEERING CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F02C GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS 158
 
  
 
F02G HOT-GAS OR COMBUSTION- PRODUCT POSITIVE-DISPLaCEMENT ENGINE PLANTS 122

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6148602 Solid-fueled power generation system with carbon dioxide sequestration and method thereforDec 30, 98Nov 21, 00[F02C, F02G]
D378754 Nozzle ringFeb 13, 95Apr 08, 97[]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6401445 Electrolysis system and method for improving fuel atomization and combustionExpiredDec 07, 99Jun 11, 02[F02G]
6280866 Fuel cell flow distributor design for improving durability and performanceExpiredFeb 23, 99Aug 28, 01[H01M]
6039534 Inlet guide vane assemblyExpiredSep 21, 98Mar 21, 00[F04D]
5992139 Turbine engine with turbocompressor for supplying atomizing fluid to turbine engine fuel systemExpiredNov 03, 97Nov 30, 99[F02C]
5836713 Coupling mechanism for establishing an involute spline connectionExpiredMay 01, 97Nov 17, 98[F16B]
5509315 Absorption dynamometer torque measuring device and calibration methodExpiredMar 02, 95Apr 23, 96[G01L]
D355253 Impeller for refrigerant compressorsExpiredFeb 25, 93Feb 07, 95[]
5353597 Inlet air cooling systemExpiredOct 28, 93Oct 11, 94[F02B]
5324175 Pneumatically operated reciprocating piston compressorExpiredMay 03, 93Jun 28, 94[F04B]
5316261 Fluid conduit having a variable inner diameterExpiredOct 26, 92May 31, 94[F16K, G01F]
5312235 Apparatus for reducing pressure pulsationsExpiredSep 24, 93May 17, 94[F01C]
5259196 Inlet air cooling systemExpiredDec 16, 92Nov 09, 93[F02B]
5189844 Fluid driven tool control deviceExpiredDec 26, 91Mar 02, 93[B24B]
4744724 Absorption dynamometerExpiredJul 13, 87May 17, 88[G01L, F01D]
4718702 Expansible couplingExpiredNov 06, 85Jan 12, 88[F16L]
4717075 Particulate dispersion apparatusExpiredJul 18, 86Jan 05, 88[B05B]
4697520 Fog oil smoke generatorExpiredAug 11, 86Oct 06, 87[F42B]
4526199 Valve for throttling fluidExpiredNov 14, 83Jul 02, 85[F16K]
4340317 Splineless coupling meansExpiredMay 07, 81Jul 20, 82[F16B, F16D]
4212585 Centrifugal compressorExpiredJan 20, 78Jul 15, 80[F04D]

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