Assignee
HEESUNG CATALYSTS CORP
KR·21 granted patents·20 pending applications·31 citations·filing 2005–2025
Top patents by PatentIndex Score
41 records- 0187US8658560B1Hydrogenation catalyst for nitro-aromatic compounds and method for preparing the sameHEESUNG CATALYSTS CORP·Filed 2012·Granted Feb 25, 2014·9 cites·11 claims
- 0286US7678348B2SCR catalytic converter without NH3 or urea injectionHEESUNG CATALYSTS CORP·Filed 2006·Granted Mar 16, 2010·14 cites·8 claims
- 0369US8668893B2Catalysts for NOx reduction employing H2 and a method of reducing NOxHEESUNG CATALYSTS CORP·Filed 2012·Granted Mar 11, 2014·1 cites·4 claims
- 0469US7931874B2Three-layered catalyst system for purifying exhaust gases of internal enginesHEESUNG CATALYSTS CORP·Filed 2007·Granted Apr 26, 2011·4 cites·3 claims
- 0566US2024417276A1Method for preparing iridium oxideHEESUNG CATALYSTS CORP·Filed 2022·Application pending·0 cites
- 0666US2019143314A1Apparatus and method for quantitatively coating catalyst supportHEESUNG CATALYSTS CORP·Filed 2019·Application pending·0 cites
- 0765US2026091372A1Catalyst For Ammonia Cracking And Method Of Manufacturing The SameHEESUNG CATALYSTS CORP·Filed 2025·Application pending·0 cites
- 0864US9931615B2Exhaust gas oxidation catalyst for compressed natural gas combustion systemHEESUNG CATALYSTS CORP·Filed 2014·Granted Apr 3, 2018·1 cites·10 claims
- 0963US11813599B2Method for coating porous catalyst support and device thereforHEESUNG CATALYSTS CORP·Filed 2019·Granted Nov 14, 2023·1 cites·4 claims
- 1062US2024316536A1Catalyst for decomposing perfluorocompounds and method of preparing sameHEESUNG CATALYSTS CORP·Filed 2024·Application pending·0 cites
- 1160US12296326B2Catalyst for synthesis of hydrogen peroxide and recovery, and method of preparing sameHEESUNG CATALYSTS CORP·Filed 2020·Granted May 13, 2025·0 cites·5 claims
- 1259US12097483B2Exhaust gas-purification catalyst having multi-layer structure including precious metal thin layer as top layer, and method for producing sameHEESUNG CATALYSTS CORP·Filed 2020·Granted Sep 24, 2024·0 cites·6 claims
- 1359US10889503B2Zeolite having specific ratio of divalent copper ions supported thereon, and preparation method therefor and catalyst composition comprising sameHEESUNG CATALYSTS CORP·Filed 2017·Granted Jan 12, 2021·0 cites·7 claims
- 1458US9675949B2Quantitative catalyst supply deviceHEESUNG CATALYSTS CORP·Filed 2014·Granted Jun 13, 2017·1 cites·2 claims
- 1557US2026008031A1Catalyst for decomposing perfluorocompounds and method of preparing sameHEESUNG CATALYSTS CORP·Filed 2025·Application pending·0 cites
- 1656US11344875B2NOx-trapping catalyst having non-platinum-group-metal NOx-trapping layerHEESUNG CATALYSTS CORP·Filed 2018·Granted May 31, 2022·0 cites·13 claims
- 1756US2025288975A1Catalyst for decomposing perfluorocompounds and method of preparing sameHEESUNG CATALYSTS CORP·Filed 2025·Application pending·0 cites
- 1855US12145133B2Method for preparing dehydrogenation catalyst for linear chain light hydrocarbons with high regeneration efficiencyHEESUNG CATALYSTS CORP·Filed 2018·Granted Nov 19, 2024·0 cites·9 claims
- 1955US11679380B2Double-layer-structured catalyst for dehydrogenating light hydrocarbonsHEESUNG CATALYSTS CORP·Filed 2019·Granted Jun 20, 2023·0 cites·2 claims
- 2055US2025339850A1Method for manufacturing exhaust gas-purifying catalyst for inhibiting sintering of active precious metal componentHEESUNG CATALYSTS CORP·Filed 2022·Application pending·0 cites
- 2154US10434499B2Catalyst composition for inhibiting diesel engine white smoke emissionHEESUNG CATALYSTS CORP·Filed 2016·Granted Oct 8, 2019·0 cites·4 claims
- 2254US10213769B2Method for producing hydrocarbon dehydrogenation catalyst using sponge-type supportHEESUNG CATALYSTS CORP·Filed 2014·Granted Feb 26, 2019·0 cites·4 claims
- 2353US2011150742A1Catalysts for nox reduction employing h2 and a method of reducing noxHEESUNG CATALYSTS CORP·Filed 2008·Application pending·0 cites
- 2452US11266979B2Method for preparing dehydrogenation catalyst for straight chain-type light hydrocarbon using stabilized active metal compositeHEESUNG CATALYSTS CORP·Filed 2016·Granted Mar 8, 2022·0 cites·9 claims
- 2552US10751701B2Oxidation catalyst for compressed natural gas combustion system exhaust gasHEESUNG CATALYSTS CORP·Filed 2016·Granted Aug 25, 2020·0 cites·7 claims
- 2652US2023415130A1Catalyst for regenerating working solution for synthesizing hydrogen peroxideHEESUNG CATALYSTS CORP·Filed 2021·Application pending·0 cites
- 2752US2024001345A1Catalyst for hydrogen peroxide synthesis and regenerationHEESUNG CATALYSTS CORP·Filed 2021·Application pending·0 cites
- 2850US11040333B2Method for preparing dehydrogenation catalyst for straight chain-type light hydrocarbon using stabilized active material complexHEESUNG CATALYSTS CORP·Filed 2016·Granted Jun 22, 2021·0 cites·7 claims
- 2950US9321033B2Process for thermal fixation of catalytically active component onto alumina supportHEESUNG CATALYSTS CORP·Filed 2013·Granted Apr 26, 2016·0 cites·8 claims
- 3050US2024017245A1Method for preparing nox storage-reduction catalyst article comprising ruthenium composite, and exhaust treatment system comprising sameHEESUNG CATALYSTS CORP·Filed 2021·Application pending·0 cites
- 3147US2011126525A1Novel scr catalysts and after-treatment devices for diesel engine exhaust gasHEESUNG CATALYSTS CORP·Filed 2008·Application pending·0 cites
- 3247US2014349840A1Ammonia oxidation catalyst in scr systemHEESUNG CATALYSTS CORP·Filed 2014·Application pending·0 cites
- 3346US11135572B2Three-way catalyst comprising Pd—Rh alloyHEESUNG CATALYSTS CORP·Filed 2016·Granted Oct 5, 2021·0 cites·5 claims
- 3444US2022355275A1Heat-resistant ruthenium composite and use thereof as catalyst for nox storage and reductionHEESUNG CATALYSTS CORP·Filed 2020·Application pending·0 cites
- 3543US2016332146A1Catalytic member for purifying exhaust gases, and washcoatHEESUNG CATALYSTS CORP·Filed 2014·Application pending·0 cites
- 3643US2009126353A1Oxidation Catalyst for NH3 and an Apparatus for Treating Slipped or Scripped NH3HEESUNG CATALYSTS CORP·Filed 2005·Application pending·0 cites
- 3741US2021379568A1Method for producing high-efficiency dehydrogenation catalyst for branched light hydrocarbonsHEESUNG CATALYSTS CORP·Filed 2019·Application pending·0 cites
- 3841US2019184374A1Filter structure as solid catalyst carrier for preparing alkyl aromatic compoundHEESUNG CATALYSTS CORP·Filed 2017·Application pending·0 cites
- 3940US2021205794A1Zeolite having improved heat resistance and catalyst composite using sameHEESUNG CATALYSTS CORP·Filed 2019·Application pending·0 cites
- 4039US12280366B2Method for coating exhaust gas purification catalyst filter with fixed amount of catalyst slurryHEESUNG CATALYSTS CORP·Filed 2020·Granted Apr 22, 2025·0 cites·5 claims
- 4137US2017051649A1Method for regenerating catalyst for oxidizing compressed natural gas vehicle exhaust gasHEESUNG CATALYSTS CORP·Filed 2015·Application pending·0 cites
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