SUNPOWER, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F25B REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS 1256
 
  
 
F01B MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES 1116
 
  
 
F02G HOT-GAS OR COMBUSTION- PRODUCT POSITIVE-DISPLaCEMENT ENGINE PLANTS 617
 
  
 
B23P OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS 452
 
  
 
F02B INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL 369
 
  
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 359
 
  
 
H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS 384
 
  
 
F16F SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION257
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 2105
 
  
 
F02D CONTROLLING COMBUSTION ENGINES 172

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8960655 Compact flexure bearing spring for springing multiple bodiesMay 31, 13Feb 24, 15[F16F, H01H]
8857173 Two piston, concentric cylinder, alpha free piston Stirling machineMay 23, 12Oct 14, 14[F02G]
8860381 Balancing vibrations at harmonic frequencies by injecting harmonic balancing signals into the armature of a linear motor/alternator coupled to a Stirling machineJul 16, 12Oct 14, 14[H02P]
8800302 Driving an active vibration balancer to minimize vibrations at the fundamental and harmonic frequenciesJul 16, 12Aug 12, 14[F25B]
8590300 Balanced multiple groupings of beta stirling machinesOct 19, 09Nov 26, 13[F01B]
8307700 Internal position and limit sensor for free piston machinesJul 29, 10Nov 13, 12[G01M]
8310113 Multiple armature linear motor/alternator having magnetic spring with no fringe fields and increased power outputNov 02, 09Nov 13, 12[H02K]
7784184 Involute foil regenerator methodOct 14, 05Aug 31, 10[B23P]
7744133 Jointed head with temporary clamp for stirling machineFeb 27, 07Jun 29, 10[F16L]
7701075 Hybrid electrical power source combining stirling engine driven alternator with supplementing electrical energy storageDec 05, 08Apr 20, 10[F02B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2014/0202,172 Cold Finger For CryocoolersAbandonedJan 22, 13Jul 24, 14[B23P, F25B]
8590301 Free-piston stirling machine for extreme temperaturesExpiredDec 05, 11Nov 26, 13[F02G]
2013/0180,238 Beta Free Piston Stirling Engine In Free Casing Configuration Having Power Output Controlled By Controlling Casing Amplitude Of ReciprocationAbandonedAug 09, 12Jul 18, 13[F01B]
2010/0299,924 Involute Foil RegeneratorAbandonedAug 13, 10Dec 02, 10[B23P, B21D]
7685818 Connection of a free-piston stirling machine and a load or prime mover permitting differing amplitudes of reciprocationExpiredMay 30, 07Mar 30, 10[F01B]
7437878 Multi-stage pulse tube cryocooler with acoustic impedance constructed to reduce transient cool down time and thermal lossExpiredAug 23, 05Oct 21, 08[F25B]
7372255 Detection of the instantaneous position of a linearly reciprocating member using high frequency injectionExpiredSep 13, 06May 13, 08[G01B]
2007/0256,428 Vibration control of free piston machines through frequency adjustmentAbandonedMay 05, 06Nov 08, 07[F25B, F25D]
7210312 Energy efficient, inexpensive extraction of oxygen from ambient air for portable and home useExpiredAug 03, 04May 01, 07[F25J]
7000390 Stirling cycle engine or heat pump with improved heat exchangerExpiredJul 20, 05Feb 21, 06[F25B]
2006/0026,835 Heat exchanger fins and method for fabricating fins particularly suitable for stirling enginesAbandonedAug 03, 04Feb 09, 06[B23P]
6993917 Coupling for heat transfer memberExpiredJul 28, 03Feb 07, 06[F25B]
6991023 Involute foil regeneratorExpiredApr 24, 03Jan 31, 06[F28D]
2005/0268,605 Method and apparatus for forming a heat exchangerAbandonedJun 02, 04Dec 08, 05[F23L, F01B, F02G]
6880452 Spring standoff for a reciprocating deviceExpiredJul 28, 03Apr 19, 05[F01B]
2005/0025,565 Securing device for a springAbandonedJul 28, 03Feb 03, 05[F16B]
6817221 Wound regenerator methodExpiredJul 25, 03Nov 16, 04[B21D]
2004/0134,733 Vibration absorberAbandonedJan 13, 03Jul 15, 04[F16F]
6170442 Free piston internal combustion engineExpiredJul 06, 98Jan 09, 01[F02B]
5941079 Microminiature stirling cycle cryocoolers and enginesExpiredMay 22, 97Aug 24, 99[F25B]

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