Sturman Digital Systems, LLC

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F02M SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF 1271
 
  
 
F02B INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL 963
 
  
 
F02D CONTROLLING COMBUSTION ENGINES 568
 
  
 
B05B SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES 262
 
  
 
F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR 243
 
  
 
B60T VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL 172
 
  
 
F01B MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES 126
 
  
 
F01L CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES 154
 
  
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 183

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9464569 Digital hydraulic opposed free piston engines and methodsJul 20, 12Oct 11, 16[F02B]
9206738 Free piston engines with single hydraulic piston actuator and methodsJun 19, 12Dec 08, 15[F04B, F02B, F01B]
9181890 Methods of operation of fuel injectors with intensified fuel storageNov 19, 12Nov 10, 15[F02M, F02D]
9026339 Multiple fuel-type compression ignition engines and methodsMar 30, 12May 05, 15[F02B]
8887690 Ammonia fueled mobile and stationary systems and methodsJul 12, 11Nov 18, 14[F02B]
8733671 Fuel injectors with intensified fuel storage and methods of operating an engine therewithNov 21, 12May 27, 14[F02M]
8694230 Fuel systems and methods for cold environmentsMay 11, 10Apr 08, 14[F02D]
8596230 Hydraulic internal combustion enginesOct 11, 10Dec 03, 13[F02B]
8579207 Multiple intensifier injectors with positive needle control and methods of injectionMar 31, 10Nov 12, 13[F02M, B05B]
8412441 Mixed cycle compression ignition engines and methodsSep 09, 10Apr 02, 13[B60T]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8629745 Pressure balanced spool poppet valves with printed actuator coilsExpiredJul 15, 10Jan 14, 14[H01F]
2010/0012,745 Fuel Injectors with Intensified Fuel Storage and Methods of Operating an Engine TherewithAbandonedJul 14, 09Jan 21, 10[F02M]
7568632 Fuel injector with boosted needle closureExpiredOct 15, 07Aug 04, 09[F02M]
2008/0264,393 Methods of Operating Low Emission High Performance Compression Ignition EnginesAbandonedApr 29, 08Oct 30, 08[F02B]
2007/0252,012 Digital Fluid Temperature Control ValveAbandonedApr 12, 07Nov 01, 07[G05D]
2007/0215,078 Methods and apparatus to use engine valves as both intake and exhaust valvesAbandonedFeb 20, 07Sep 20, 07[F01L]
2007/0113,906 Pressure balanced spool poppet valves with printed actuator coilsAbandonedNov 16, 06May 24, 07[F15B]
7032574 Multi-stage intensifiers adapted for pressurized fluid injectorsExpiredFeb 19, 04Apr 25, 06[F02M]

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