Inventor · disambiguated record
Ian J. Mac Ewen
Also filed as: MAC EWEN IAN J
9 granted patents·107 citations·filing 2003–2013
86Inventor score
Top patents by PatentIndex Score
9 records- 0196US7152594B2Air/fuel imbalance detection system and methodGM GLOBAL TECH OPERATIONS INC·Filed 2005·Granted Dec 26, 2006·49 cites·23 claims
- 0291US8104334B2Fuel pressure sensor performance diagnostic systems and methods based on hydrodynamics of injectonWANG WENBO·Filed 2009·Granted Jan 31, 2012·23 cites·14 claims
- 0384US7900615B2Air-fuel imbalance detection based on zero-phase filteringGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Mar 8, 2011·14 cites·20 claims
- 0467US6996974B2Fuel control failure detection based on post O2 sensorGEN MOTORS CORP·Filed 2003·Granted Feb 14, 2006·14 cites·28 claims
- 0559US8793976B2Sulfur accumulation monitoring systems and methodsJEFFREY SCOTT·Filed 2012·Granted Aug 5, 2014·1 cites·17 claims
- 0657US8136347B2Algorithm to diagnose leaks or blockages downstream of the secondary air injection reaction (SAIR) pressure sensorMAC EWEN IAN J·Filed 2008·Granted Mar 20, 2012·4 cites·13 claims
- 0754US8631783B2Method and apparatus for controlling engine torque during intrusive testingWANG LAN·Filed 2009·Granted Jan 21, 2014·2 cites·21 claims
- 0845US9234449B2Leak and blockage diagnostic systems and methodsGM GLOBAL TECH OPERATIONS INC·Filed 2013·Granted Jan 12, 2016·0 cites·15 claims
- 0940US7826963B1Diagnostic system for spark ignition direct injection system control circuitsGM GLOBAL TECH OPERATIONS INC·Filed 2009·Granted Nov 2, 2010·0 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →