Assignee
SUNPOWER INC
US·80 granted patents·3 pending applications·2,867 citations·filing 1977–2019
Top patents by PatentIndex Score
83 records- 0198US5775273AFree piston internal combustion engineSUNPOWER INC·Filed 1997·Granted Jul 7, 1998·122 cites·26 claims
- 0298US5525845AFluid bearing with compliant linkage for centering reciprocating bodiesSUNPOWER INC·Filed 1994·Granted Jun 11, 1996·204 cites·14 claims
- 0398US5342176AMethod and apparatus for measuring piston position in a free piston compressorSUNPOWER INC·Filed 1993·Granted Aug 30, 1994·271 cites·4 claims
- 0497US4602174AElectromechanical transducer particularly suitable for a linear alternator driven by a free-piston stirling engineSUNPOWER INC·Filed 1985·Granted Jul 22, 1986·118 cites·9 claims
- 0596US8960655B2Compact flexure bearing spring for springing multiple bodiesSUNPOWER INC·Filed 2013·Granted Feb 24, 2015·24 cites·11 claims
- 0695US6536326B2Control system and method for preventing destructive collisions in free piston machinesSUNPOWER INC·Filed 2001·Granted Mar 25, 2003·64 cites·20 claims
- 0794US6170442B1Free piston internal combustion engineSUNPOWER INC·Filed 1998·Granted Jan 9, 2001·82 cites·27 claims
- 0894US5496153AMethod and apparatus for measuring piston position in a free piston compressorSUNPOWER INC·Filed 1994·Granted Mar 5, 1996·98 cites·6 claims
- 0994US5148066ALinear generator or motor with integral magnetic springSUNPOWER INC·Filed 1991·Granted Sep 15, 1992·78 cites·10 claims
- 1094US4183214ASpring and resonant system for free-piston Stirling enginesSUNPOWER INC·Filed 1977·Granted Jan 15, 1980·73 cites·9 claims
- 1193US6035637AFree-piston internal combustion engineSUNPOWER INC·Filed 1998·Granted Mar 14, 2000·70 cites·27 claims
- 1292US6293184B1Gas bearing and method of making a gas bearing for a free piston machineSUNPOWER INC·Filed 1999·Granted Sep 25, 2001·57 cites·11 claims
- 1392US5715693ARefrigeration circuit having series evaporators and modulatable compressorSUNPOWER INC·Filed 1996·Granted Feb 10, 1998·78 cites·8 claims
- 1492US5502968AFree piston stirling machine having a controllably switchable work transmitting linkage between displacer and pistonSUNPOWER INC·Filed 1994·Granted Apr 2, 1996·59 cites·21 claims
- 1591US4649283AMulti-phase linear alternator driven by free-piston Stirling engineSUNPOWER INC·Filed 1985·Granted Mar 10, 1987·70 cites·11 claims
- 1691US4642547AAdaptive regulation system for a linear alternator driven by a free-piston stirling engineSUNPOWER INC·Filed 1985·Granted Feb 10, 1987·89 cites·11 claims
- 1790US6199381B1DC centering of free piston machineSUNPOWER INC·Filed 1999·Granted Mar 13, 2001·52 cites·13 claims
- 1889US7453241B2Electronic controller matching engine power to alternator power and maintaining engine frequency for a free-piston stirling engine driving a linear alternatorSUNPOWER INC·Filed 2006·Granted Nov 18, 2008·20 cites·10 claims
- 1989US7409833B2Dual mode compressor with automatic compression ratio adjustment for adapting to multiple operating conditionsSUNPOWER INC·Filed 2005·Granted Aug 12, 2008·16 cites·17 claims
- 2089US5156005AControl of stirling cooler displacement by pulse width modulation of drive motor voltageSUNPOWER INC·Filed 1991·Granted Oct 20, 1992·71 cites·12 claims
- 2188US4945726ALeaky gas spring valve for preventing piston overstroke in a free piston stirling engineSUNPOWER INC·Filed 1989·Granted Aug 7, 1990·47 cites·10 claims
- 2287US5537820AFree piston end position limiterSUNPOWER INC·Filed 1994·Granted Jul 23, 1996·58 cites·14 claims
- 2385US7372255B2Detection of the instantaneous position of a linearly reciprocating member using high frequency injectionSUNPOWER INC·Filed 2006·Granted May 13, 2008·15 cites·15 claims
- 2485US6684637B2Parallel slot heat exchangerSUNPOWER INC·Filed 2002·Granted Feb 3, 2004·31 cites·32 claims
- 2584US5592073ATriac control circuitSUNPOWER INC·Filed 1995·Granted Jan 7, 1997·46 cites·12 claims
- 2684US4404802ACenter-porting and bearing system for free-piston stirling enginesSUNPOWER INC·Filed 1981·Granted Sep 20, 1983·35 cites·9 claims
- 2783US4888951APhase synchronization and vibration cancellation for free piston Stirling machinesSUNPOWER INC·Filed 1989·Granted Dec 26, 1989·36 cites·12 claims
- 2882US4802332ASliding surface lubrication particularly advantageous for a free piston stirling engineSUNPOWER INC·Filed 1987·Granted Feb 7, 1989·35 cites·11 claims
- 2982US4623808AElectromechanical transducer particularly suitable for a linear alternator driven by a free-piston Stirling engineSUNPOWER INC·Filed 1985·Granted Nov 18, 1986·44 cites·6 claims
- 3081US6993917B2Coupling for heat transfer memberSUNPOWER INC·Filed 2003·Granted Feb 7, 2006·32 cites·18 claims
- 3181US6038874ARefrigeration circuit having series evaporators and modulatable compressorSUNPOWER INC·Filed 1997·Granted Mar 21, 2000·40 cites·5 claims
- 3281US5642622ARefrigerator with interior mounted heat pumpSUNPOWER INC·Filed 1995·Granted Jul 1, 1997·52 cites·32 claims
- 3381US5003777AAsymmetric gas springSUNPOWER INC·Filed 1990·Granted Apr 2, 1991·39 cites·10 claims
- 3481US4866378ADisplacement transducer with opposed coils for improved linearity and temperature compensationSUNPOWER INC·Filed 1988·Granted Sep 12, 1989·32 cites·9 claims
- 3580US7434409B2Pulse tube cooler having ¼ wavelength resonator tube instead of reservoirSUNPOWER INC·Filed 2005·Granted Oct 14, 2008·9 cites·8 claims
- 3679US7685818B2Connection of a free-piston stirling machine and a load or prime mover permitting differing amplitudes of reciprocationSUNPOWER INC·Filed 2007·Granted Mar 30, 2010·9 cites·13 claims
- 3779US7600464B2Multi-piece piston for a free piston machineSUNPOWER INC·Filed 2007·Granted Oct 13, 2009·20 cites·11 claims
- 3879US6920967B2Controller for reducing excessive amplitude of oscillation of free pistonSUNPOWER INC·Filed 2003·Granted Jul 26, 2005·20 cites·14 claims
- 3979US5450521APulse width modulatorSUNPOWER INC·Filed 1994·Granted Sep 12, 1995·39 cites·10 claims
- 4079US4330992ADrive mechanism for Stirling engine displacer and other reciprocating bodiesSUNPOWER INC·Filed 1980·Granted May 25, 1982·40 cites·25 claims
- 4177US7000390B2Stirling cycle engine or heat pump with improved heat exchangerSUNPOWER INC·Filed 2005·Granted Feb 21, 2006·13 cites·7 claims
- 4276US7458143B2System for centering a workpiece on the central axis of a cylindrical boreSUNPOWER INC·Filed 2006·Granted Dec 2, 2008·6 cites·6 claims
- 4376US5385021AFree piston stirling machine having variable spring between displacer and piston for power control and stroke limitingSUNPOWER INC·Filed 1992·Granted Jan 31, 1995·33 cites·9 claims
- 4475US5461859ACentering system with one way valve for free piston machineSUNPOWER INC·Filed 1994·Granted Oct 31, 1995·37 cites·11 claims
- 4575US4926123APrecision variable pitch compensation winding for displacement transducerSUNPOWER INC·Filed 1989·Granted May 15, 1990·24 cites·10 claims
- 4674US7633173B2Electronic controller matching engine power to alternator power and maintaining engine frequency for a free-piston stirling engine driving a linear alternatorSUNPOWER INC·Filed 2008·Granted Dec 15, 2009·7 cites·5 claims
- 4774US7511459B2Controller computing a virtual tuning capacitor for controlling a free-piston stirling engine driving a linear alternatorSUNPOWER INC·Filed 2007·Granted Mar 31, 2009·10 cites·9 claims
- 4872US4864232ATemperature compensation for displacement transducerSUNPOWER INC·Filed 1989·Granted Sep 5, 1989·22 cites·7 claims
- 4972US4583364APiston centering method and apparatus for free-piston Stirling enginesSUNPOWER INC·Filed 1985·Granted Apr 22, 1986·26 cites·9 claims
- 5070US4339960ADrive mechanism for Stirling engine displacer and piston and other reciprocating bodiesSUNPOWER INC·Filed 1980·Granted Jul 20, 1982·25 cites·11 claims
Showing the top 50 of 83 patent records by PatentIndex Score.
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