Assignee
HEESUNG ENGELHARD CORP
KR·2 granted patents·4 pending applications·7 citations·filing 2007–2009
Top patents by PatentIndex Score
6 records- 0172US7740818B2Transition metal-substituted hydrotalcite catalyst for removing nitrogen oxides from the exhaust gas of diesel engine by storage-reductionHEESUNG ENGELHARD CORP·Filed 2009·Granted Jun 22, 2010·5 cites·5 claims
- 0253US7895825B2Method and apparatus for reducing exhaust gas including hydrocarbons during initial cold start periodHEESUNG ENGELHARD CORP·Filed 2007·Granted Mar 1, 2011·2 cites·1 claims
- 0352US2009004081A1Exhaust gas purifying catalyst composition containing zeolite for reducing hydrogen sulfideHEESUNG ENGELHARD CORP·Filed 2008·Application pending·0 cites
- 0451US2008026937A1Transition metal-substituted hydrotalcite catalyst for removing nitrogen oxides from the exhaust gas of diesel engine by storage-reductionHEESUNG ENGELHARD CORP·Filed 2007·Application pending·0 cites
- 0551US2007238606A1Exhaust gas purifying catalyst composition containing zeolite for reducing hydrogen sulfideHEESUNG ENGELHARD CORP·Filed 2007·Application pending·0 cites
- 0642US2008034719A1Diesel particulate filter having improved thermal durabilityHEESUNG ENGELHARD CORP·Filed 2007·Application pending·0 cites
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