Assignee
INNAS FREE PISTON BV
NL·14 granted patents·443 citations·filing 1992–2003
Top patents by PatentIndex Score
14 records- 0187US5556262AFree-piston engine having a fluid energy unitINNAS FREE PISTON BV·Filed 1992·Granted Sep 17, 1996·63 cites·6 claims
- 0286US6575076B1Hydraulic installationsINNAS FREE PISTON BV·Filed 2000·Granted Jun 10, 2003·27 cites·7 claims
- 0386US5829393AFree-piston engineINNAS FREE PISTON BV·Filed 1995·Granted Nov 3, 1998·64 cites·4 claims
- 0484US6116138APressure transformerINNAS FREE PISTON BV·Filed 1997·Granted Sep 12, 2000·53 cites·11 claims
- 0583US6279517B1Free piston engine provided with a purging air dosing systemINNAS FREE PISTON BV·Filed 1997·Granted Aug 28, 2001·46 cites·9 claims
- 0680US5540193AMethod for the cold start of a free-piston engine; and free-piston engine adapted for use of this methodINNAS FREE PISTON BV·Filed 1992·Granted Jul 30, 1996·38 cites·8 claims
- 0777US5482445AFree-piston engine having a slidable ring for moving the pistonINNAS FREE PISTON BV·Filed 1992·Granted Jan 9, 1996·33 cites·9 claims
- 0877US5473893AFree-piston engine having a fluid pressure unitINNAS FREE PISTON BV·Filed 1992·Granted Dec 12, 1995·34 cites·8 claims
- 0970US6223529B1Hydraulic system with a hydromotor fed by a hydraulic transformerINNAS FREE PISTON BV·Filed 1998·Granted May 1, 2001·31 cites·14 claims
- 1068US6823671B2Free-piston unit for generating hydraulic energyINNAS FREE PISTON BV·Filed 2000·Granted Nov 30, 2004·16 cites·10 claims
- 1162US5983638AHydraulic switching valve, and a free piston engine provided therewithINNAS FREE PISTON BV·Filed 1995·Granted Nov 16, 1999·22 cites·5 claims
- 1247US7090472B2Pump or motor with interconnected chambers in the rotorINNAS FREE PISTON BV·Filed 2003·Granted Aug 15, 2006·4 cites·8 claims
- 1340US7028470B1Apparatus for executing activities assisted by hydromotors and a hydraulic transformer for use in such an apparatusINNAS FREE PISTON BV·Filed 1999·Granted Apr 18, 2006·12 cites·24 claims
- 1437US6893231B2Hydraulic deviceINNAS FREE PISTON BV·Filed 2003·Granted May 17, 2005·0 cites·8 claims
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