Inventor
SYMONS WALTER T
US21 patents
⚠️ This page may combine multiple inventors who share the name “SYMONS WALTER T”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DELPHI TECH INC
18 patentsUS7294252B2Nov 13, 2007
NOx sensor and methods of using the same
DELPHI TECH INC27 citations92
US6579436B2Jun 17, 2003
Gas sensor and method of producing the same
DELPHI TECH INC25 citations92
US6579435B2Jun 17, 2003
Gas sensor
DELPHI TECH INC32 citations92
US7048844B2May 23, 2006
Gas sensor and method for use thereof
DELPHI TECH INC28 citations91
US6562215B1May 13, 2003
Planar exhaust sensor element with enhanced geometry
DELPHI TECH INC30 citations91
US6544467B2Apr 8, 2003
Exhaust gas sensor and the method of manufacture thereof
DELPHI TECH INC28 citations91
US7074319B2Jul 11, 2006
Ammonia gas sensors
DELPHI TECH INC22 citations90
US7280028B2Oct 9, 2007
Temperature sensor and method of making the same
DELPHI TECH INC21 citations88
US6638416B2Oct 28, 2003
Hydrogen sensing process
DELPHI TECH INC17 citations83
US6435005B1Aug 20, 2002
Heater patterns for planar gas sensors
DELPHI TECH INC17 citations82
US6984298B2Jan 10, 2006
Gas sensor having an insulating layer
DELPHI TECH INC11 citations76
US7138604B2Nov 21, 2006
Ceramic device, sensor device, method of making the same, and method for sensing gas
DELPHI TECH INC7 citations73
US6793788B2Sep 21, 2004
Method and device for hydrogen and hydrocarbon sensing
DELPHI TECH INC7 citations73
US6365880B1Apr 2, 2002
Heater patterns for planar gas sensors
DELPHI TECH INC11 citations72
US8051700B2Nov 8, 2011
Exhaust gas sensor and method for determining concentrations of exhaust gas constituents
DELPHI TECH INC4 citations61
US6486449B2Nov 26, 2002
Heater patterns for planar gas sensors
DELPHI TECH INC4 citations61
US7828955B2Nov 9, 2010
Ammonia gas sensors
DELPHI TECH INC3 citations60
US7279133B2Oct 9, 2007
Planar sensor and a method for measuring the temperature of same
DELPHI TECH INC6 citations59