Inventor
TWIGG MARTYN VINCENT
GB34 patents
⚠️ This page may combine multiple inventors who share the name “TWIGG MARTYN VINCENT”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
JOHNSON MATTHEY PLC
24 patentsUS7264785B2Sep 4, 2007
Selective catalytic reduction
JOHNSON MATTHEY PLC157 citations98
US6877313B1Apr 12, 2005
Particulate control
JOHNSON MATTHEY PLC84 citations98
US6863874B1Mar 8, 2005
Process and apparatus for treating combustion exhaust gas
JOHNSON MATTHEY PLC103 citations98
US6753294B1Jun 22, 2004
Catalytic wall-flow filter
JOHNSON MATTHEY PLC193 citations97
US6696031B1Feb 24, 2004
Treatment of exhaust gas
JOHNSON MATTHEY PLC76 citations97
US7178331B2Feb 20, 2007
Exhaust system for lean burn IC engines
JOHNSON MATTHEY PLC56 citations96
US7097817B2Aug 29, 2006
Method for treating soot-containing exhaust
JOHNSON MATTHEY PLC91 citations96
US8006485B2Aug 30, 2011
Compression ignition engine and exhaust system therefor
JOHNSON MATTHEY PLC19 citations93
US7861516B2Jan 4, 2011
Methods of controlling reductant addition
JOHNSON MATTHEY PLC57 citations93
US7485270B2Feb 3, 2009
Process for treating compression ignition engine exhaust gas
JOHNSON MATTHEY PLC19 citations93
US7111453B2Sep 26, 2006
Emissions control
JOHNSON MATTHEY PLC20 citations93
US6889498B1May 10, 2005
Emissions control
JOHNSON MATTHEY PLC28 citations93
US6294141B1Sep 25, 2001
Emission control
JOHNSON MATTHEY PLC126 citations93
US7998424B2Aug 16, 2011
Exhaust system comprising zoned oxidation catalyst
JOHNSON MATTHEY PLC30 citations92
US6651424B1Nov 25, 2003
Catalyst systems
JOHNSON MATTHEY PLC27 citations92
US6857265B2Feb 22, 2005
Diesel exhaust system including NOx-trap
JOHNSON MATTHEY PLC22 citations91
US6775972B2Aug 17, 2004
Purification of exhaust gases
JOHNSON MATTHEY PLC45 citations90
US7141226B2Nov 28, 2006
Light-duty diesel catalysts
JOHNSON MATTHEY PLC12 citations84
US7430857B2Oct 7, 2008
Emissions control
JOHNSON MATTHEY PLC6 citations74
US7404933B2Jul 29, 2008
Diesel exhaust system including NOx-trap
JOHNSON MATTHEY PLC8 citations74
US6978601B1Dec 27, 2005
Regenerating sulphur poisoned diesel catalysts
JOHNSON MATTHEY PLC9 citations74
US9528408B2Dec 27, 2016
Exhaust system comprising exotherm-generating catalyst
JOHNSON MATTHEY PLC3 citations71
US8372187B2Feb 12, 2013
Particulate matter generator and collector
JOHNSON MATTHEY PLC3 citations54
US7488456B2Feb 10, 2009
Method of treating atmospheric pollutants
JOHNSON MATTHEY PLC0 citations42