LIQUIDPISTON, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F02B INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL 1260
 
  
 
F01C ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES 1118
 
  
 
F04C ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS 443
 
  
 
F02D CONTROLLING COMBUSTION ENGINES 370
 
  
 
F02M SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF 380
 
  
 
F03C POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS 321
 
  
 
B05D PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 186
 
  
 
F01L CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES 154
 
  
 
F02C GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS 158
 
  
 
F02F CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES 134

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9810068 Rotary engine with cam-guided rotorMay 20, 16Nov 07, 17[F04C, F03C, F02B, F01C]
9644570 Hybrid cycle rotary engineOct 20, 14May 09, 17[F02B, F01C, F02D, F02F]
9528435 Air-cooled rotary engineJan 24, 14Dec 27, 16[F02B, F01C]
9523310 Hybrid cycle combustion engine and methodsJul 08, 14Dec 20, 16[F01L, F02M, F02B, F01C]
9382851 Isochoric heat addition engines and methodsOct 20, 14Jul 05, 16[F02M, F02D, F01C]
9353623 Seal assembly for a heat engineAug 30, 13May 31, 16[F04C, F03C, F02B, F01C]
8863723 Hybrid cycle rotary engineFeb 04, 13Oct 21, 14[F04C, F02B, F01C, F02D]
8863724 Isochoric heat addition engines and methodsAug 04, 09Oct 21, 14[B05D, F02B, F01C]
8794211 Hybrid cycle combustion engine and methodsFeb 04, 13Aug 05, 14[F02B]
8523546 Cycloid rotor engineJul 17, 12Sep 03, 13[F04C, F03C]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2011/0247,583 Internal Combustion Engine and Components ThereforAbandonedApr 12, 11Oct 13, 11[F02B]

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