EXPONENTIAL TECHNOLOGIES, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F01C ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES 722
 
  
 
F02C GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS 455
 
  
 
F04C ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS 443
 
  
 
F03C POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS 321
 
  
 
F01D NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES 263
 
  
 
E21B EARTH OR ROCK DRILLING 195
 
  
 
F02B INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL 171
 
  
 
F02K JET-PROPULSION PLANTS 137
 
  
 
F16D COUPLINGS FOR TRANSMITTING ROTATION 190
 
  
 
F16H GEARING199

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9874097 Shroud for rotary engineAug 24, 15Jan 23, 18[F02C, F01C, F01D]
9777729 Dual axis rotorMar 15, 13Oct 03, 17[F04C]
9732600 Heating apparatusAug 26, 10Aug 15, 17[F22B, F23C, E21B]
9447688 Indexed positive displacement rotary motion deviceDec 09, 13Sep 20, 16[F04C, F03C, F02C, F01C]
9359973 Multitube valveless pulse detonation engineJun 15, 11Jun 07, 16[F02K, F02C, F23C]
9316102 Rotors formed using involute curvesApr 20, 12Apr 19, 16[F01C]
9121275 Positive displacement expanderDec 19, 12Sep 01, 15[H02K, F01C]
9115646 Shroud for rotary engineJun 16, 11Aug 25, 15[F02C, F01C, F01D]
8887592 Spherical involute gear couplingMay 09, 12Nov 18, 14[F04C, F16D, F16H]
8740225 Hydrodynamic bore sealJun 02, 10Jun 03, 14[F16J]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2015/0260,184 Segmented Positive Displacement Rotor HousingAbandonedMar 17, 14Sep 17, 15[F04C]
2011/0073,048 PRESSURE GAIN COMBUSTION HEAT GENERATORAbandonedSep 27, 10Mar 31, 11[F22G, F22B]

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