Individual holder
PIEN PAO C
US·6 granted patents·114 citations·filing 1990–2007
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
6 records- 0177US7114485B2Over expanded two-stroke enginesPIEN PAO C·Filed 2005·Granted Oct 3, 2006·10 cites·15 claims
- 0269US5163397AHot pilot fuel ignited internal combustion engine and method of operating samePIEN PAO C·Filed 1991·Granted Nov 17, 1992·26 cites·29 claims
- 0366US5072699AInternal combustion enginePIEN PAO C·Filed 1990·Granted Dec 17, 1991·36 cites·20 claims
- 0465US7640911B2Two-stroke, homogeneous charge, spark-ignition enginePIEN PAO C·Filed 2007·Granted Jan 5, 2010·5 cites·16 claims
- 0561US5024195AMulti-fuel compression-ignition engine and fuel injection pump thereforPIEN PAO C·Filed 1990·Granted Jun 18, 1991·20 cites·22 claims
- 0634US5327911AUniversal contraceptive and prophylactic devicePIEN PAO C·Filed 1993·Granted Jul 12, 1994·17 cites·7 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →