DIFFERENTIAL DYNAMICS CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F16H GEARING1189
 
  
 
F03B MACHINES OR ENGINES FOR LIQUIDS 618
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 5102
 
  
 
H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS 582
 
  
 
F03D WIND MOTORS436
 
  
 
F02B INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL 270
 
  
 
B60K ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS; AUXILIARY DRIVES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST, OR FUEL SUPPLY, OF PROPULSION UNITS, IN VEHICLES 192
 
  
 
B60L ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL 175
 
  
 
F01C ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES 128
 
  
 
F01D NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES 164

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9912209 Renewable energy marine hydrokinetic or wind turbineSep 16, 16Mar 06, 18[H02K, H02P, F03B, F03D, F16H]
9506534 Three variable and four variable transgear assembliesFeb 01, 16Nov 29, 16[H02P, F16H]
9490736 Adjustable assembly of rotor and stator and applications thereof with a variable power generatorAug 18, 15Nov 08, 16[H02K, H02P, F03B, F03D, B60L]
9476401 Marine hydrokinetic turbineAug 28, 15Oct 25, 16[H02K, F03B, F03D]
9371775 One-stroke internal combustion engineSep 22, 15Jun 21, 16[G06Q, F02B]
9303733 Three variable and four variable transgear assembliesMar 25, 15Apr 05, 16[H02P, F16H]
9169772 One-stroke internal combustion engineMar 26, 14Oct 27, 15[F02B, F01C]
9151269 Run-of-the-river or ocean current turbineApr 17, 14Oct 06, 15[F03B, F16H]
9017208 Infinitely variable motion control (IVMC) for generators, transmissions and pumps/compressorsDec 04, 13Apr 28, 15[H02P, F03D, F16H]
8992370 Infinitely variable pumps and compressorsJan 15, 14Mar 31, 15[F03B, F03D, F16H]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7462124 Variable motion control device and method of useExpiredSep 03, 04Dec 09, 08[F16H]
6537168 Variable speed transmission systems and rotary motion controlsExpiredOct 13, 00Mar 25, 03[F16H]
6068570 Variable speed transmission system and differentialExpiredJun 21, 99May 30, 00[F16H]
5308293 Variable speed drive transmissionExpiredOct 19, 92May 03, 94[F16H]
5169359 Constant/variable speed gear assemblyExpiredDec 16, 91Dec 08, 92[F16H]
5116292 Variable drive transmissionExpiredAug 01, 91May 26, 92[F16H]
5016493 Variable speed gearing assemblyExpiredJan 02, 90May 21, 91[F16H]

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