Assignee
N E CHEMCAT CORP
JP·63 granted patents·36 pending applications·1,195 citations·filing 1989–2023
Top patents by PatentIndex Score
99 records- 0194US4970128ASupported platinum alloy electrocatalystN E CHEMCAT CORP·Filed 1989·Granted Nov 13, 1990·80 cites·25 claims
- 0293US5876867APlatinum skeleton alloy-supported electrocatalyst, electrode using the electrocatalyst, and process for producing the electrocatalystN E CHEMCAT CORP·Filed 1997·Granted Mar 2, 1999·167 cites·16 claims
- 0393US5024905APlatinum alloy electrocatalystN E CHEMCAT CORP·Filed 1990·Granted Jun 18, 1991·133 cites·22 claims
- 0492US5096866ASupported platinum alloy electrocatalystN E CHEMCAT CORP·Filed 1990·Granted Mar 17, 1992·80 cites·3 claims
- 0591US11305270B2Honeycomb structure, honeycomb structure type catalyst and production methods thereforN E CHEMCAT CORP·Filed 2017·Granted Apr 19, 2022·9 cites·15 claims
- 0689US11686231B2LNT layered catalyst for lean burn gasoline engine and exhaust gas purification apparatus using the sameN E CHEMCAT CORP·Filed 2021·Granted Jun 27, 2023·3 cites·10 claims
- 0788US9339794B2Catalyst composition for exhaust gas purification and exhaust gas purifying catalyst for automobilesN E CHEMCAT CORP·Filed 2013·Granted May 17, 2016·8 cites·13 claims
- 0887US10765998B2Three-way catalyst for purifying gasoline engine exhaust gasN E CHEMCAT CORP·Filed 2017·Granted Sep 8, 2020·6 cites·11 claims
- 0987US7906449B2Selective catalytic reduction type catalystN E CHEMCAT CORP·Filed 2008·Granted Mar 15, 2011·18 cites·9 claims
- 1086US10256475B2Electrode catalyst, composition for forming gas diffusion electrode, gas diffusion electrode, membrane-electrode assembly, and fuel cell stackN E CHEMCAT CORP·Filed 2017·Granted Apr 9, 2019·2 cites·20 claims
- 1186US7501105B2NOx reduction catalyst having excellent low-temperature characteristicsN E CHEMCAT CORP·Filed 2005·Granted Mar 10, 2009·11 cites·5 claims
- 1286US6649300B2Electrode catalyst and electrochemical devices using the sameN E CHEMCAT CORP·Filed 2001·Granted Nov 18, 2003·44 cites·10 claims
- 1386US6326098B1Electrocatalyst, and electrodes, membrane-electrode assembly and solid polymer electrolyte fuel cells, using said electrocatalystN E CHEMCAT CORP·Filed 1999·Granted Dec 4, 2001·77 cites·18 claims
- 1482US11271219B2Electrode catalyst, composition for forming gas diffusion electrode, gas diffusion electrode, membrane electrode assembly and fuel cell stackN E CHEMCAT CORP·Filed 2019·Granted Mar 8, 2022·1 cites·10 claims
- 1582US10857520B2Exhaust gas-purifying three-way catalyst and method for producing the same, and exhaust gas-purifying catalytic converterN E CHEMCAT CORP·Filed 2017·Granted Dec 8, 2020·2 cites·9 claims
- 1682US10115992B2Electrode catalyst, gas diffusion electrode-forming composition, gas diffusion electrode, membrane electrode assembly, and fuel cell stackN E CHEMCAT CORP·Filed 2017·Granted Oct 30, 2018·1 cites·14 claims
- 1781US9061266B2Exhaust gas purifying catalystN E CHEMCAT CORP·Filed 2012·Granted Jun 23, 2015·4 cites·8 claims
- 1881US5178971ASupported platinum quaternary alloy electrocatalystN E CHEMCAT CORP·Filed 1991·Granted Jan 12, 1993·52 cites·6 claims
- 1980US5326735AIridium catalysts for purifying exhaust gasN E CHEMCAT CORP·Filed 1992·Granted Jul 5, 1994·29 cites·8 claims
- 2080US5182140AMethod and apparatus for liquid coating for honeycomb structureN E CHEMCAT CORP·Filed 1990·Granted Jan 26, 1993·39 cites·3 claims
- 2179US11484864B2Exhaust gas-purifying three-way catalyst and method for producing same, and integral structure type exhaust gas-purifying catalystN E CHEMCAT CORP·Filed 2019·Granted Nov 1, 2022·2 cites·11 claims
- 2278US9339793B2Catalyst composition for exhaust gas cleaning and catalyst for automobile exhaust gas cleaningN E CHEMCAT CORP·Filed 2013·Granted May 17, 2016·2 cites·17 claims
- 2378US6677068B2Catalyst for selective oxidation of carbon monoxide present in hydrogen-containing gases, and elimination of carbon monoxide and solid polymer electrolyte fuel cell system which make use of the catalystN E CHEMCAT CORP·Filed 2003·Granted Jan 13, 2004·17 cites·16 claims
- 2478US6576208B1Catalyst for selective oxidation and elimination of carbon monoxide present in hydrogen-containing gasesN E CHEMCAT CORP·Filed 2000·Granted Jun 10, 2003·17 cites·21 claims
- 2578US5422138AMethod and apparatus for liquid coating for honeycomb structureN E CHEMCAT CORP·Filed 1992·Granted Jun 6, 1995·35 cites·1 claims
- 2675US5558714ATank and work-holder apparatus for liquid coating for honeycomb structureN E CHEMCAT CORP·Filed 1994·Granted Sep 24, 1996·30 cites·8 claims
- 2775US5306684ACatalyst for purification of exhaust gasesN E CHEMCAT CORP·Filed 1993·Granted Apr 26, 1994·37 cites·4 claims
- 2874US7358004B2Carbon black, electrocatalyst carrier formed from carbon black, and electrocatalyst and electrochemical device using carrierN E CHEMCAT CORP·Filed 2002·Granted Apr 15, 2008·10 cites·5 claims
- 2972US5364445ARecovery method of rhodiumN E CHEMCAT CORP·Filed 1993·Granted Nov 15, 1994·15 cites·16 claims
- 3071US10882033B2Slurry composition for catalyst and method for producing same, method for producing catalyst using this slurry composition for catalyst, and method for producing Cu-containing zeoliteN E CHEMCAT CORP·Filed 2018·Granted Jan 5, 2021·1 cites·17 claims
- 3171US9496561B2Electrode catalyst, composition for forming gas diffusion electrode, gas diffusion electrode, membrane-electrode assembly, and fuel cell stackN E CHEMCAT CORP·Filed 2015·Granted Nov 15, 2016·1 cites·30 claims
- 3271US9480948B2Exhaust gas purifierN E CHEMCAT CORP·Filed 2013·Granted Nov 1, 2016·1 cites·13 claims
- 3370US11376568B2Exhaust gas-purifying three-way catalystN E CHEMCAT CORP·Filed 2019·Granted Jul 5, 2022·1 cites·10 claims
- 3469US9525180B2Production method of electrode catalyst, electrode catalyst, composition for forming gas diffusion electrode, gas diffusion electrode, membrane-electrode assembly (MEA), and fuel cell stackN E CHEMCAT CORP·Filed 2015·Granted Dec 20, 2016·1 cites·26 claims
- 3568US5147842AExhaust gas-purifying catalyst and process for preparation thereofN E CHEMCAT CORP·Filed 1990·Granted Sep 15, 1992·25 cites·28 claims
- 3667US6624112B2Hydrogenolysis catalystN E CHEMCAT CORP·Filed 2002·Granted Sep 23, 2003·8 cites·21 claims
- 3767US5783515ACatalyst for treating exhaust gases containing dioxines, production process for the catalyst and method of treating the exhaust gasesN E CHEMCAT CORP·Filed 1995·Granted Jul 21, 1998·39 cites·8 claims
- 3867US5559072ANox removal catalyst and method of purifying exhaust gas by using the sameN E CHEMCAT CORP·Filed 1994·Granted Sep 24, 1996·21 cites·8 claims
- 3966US5997830AMethod of purifying exhaust gas from internal combustion engineN E CHEMCAT CORP·Filed 1997·Granted Dec 7, 1999·36 cites·22 claims
- 4064US12319578B2Catalyst structure, fuel reforming method, and fuel reforming systemN E CHEMCAT CORP·Filed 2022·Granted Jun 3, 2025·0 cites·7 claims
- 4164US12110296B2Compound, and method for producing the sameN E CHEMCAT CORP·Filed 2019·Granted Oct 8, 2024·0 cites·7 claims
- 4264US5821190ACatalyst comprising iridium, alkaline metal, alkaline earth or rare earth metal, and metal carbide or metal nitrideN E CHEMCAT CORP·Filed 1996·Granted Oct 13, 1998·28 cites·14 claims
- 4364US5200384AExhaust gas-purifying catalyst excellent in heat resistance and process for preparation thereofN E CHEMCAT CORP·Filed 1990·Granted Apr 6, 1993·24 cites·16 claims
- 4463US12374700B2Electrode catalyst, composition for forming gas diffusion electrode, gas diffusion electrode, membrane electrode assembly, and fuel cell stackN E CHEMCAT CORP·Filed 2021·Granted Jul 29, 2025·0 cites·15 claims
- 4563US2024105965A1Method for producing electrode catalyst, method for producing gas diffusion electrode, and method for producing film-electrode joint bodyN E CHEMCAT CORP·Filed 2022·Application pending·0 cites
- 4663US2024120503A1Method of producing electrode catalyst, method of producing gas diffusion electrode, and method of producing membrane/electrode assemblyN E CHEMCAT CORP·Filed 2022·Application pending·0 cites
- 4760US2023216063A1Electrode catalyst production system and production methodN E CHEMCAT CORP·Filed 2021·Application pending·0 cites
- 4860US2024359169A1Organic metal complex catalyst for olefin metathesis reactionN E CHEMCAT CORP·Filed 2022·Application pending·0 cites
- 4960US2023231148A1Catalyst for electrode, composition for forming gas diffusion electrode, gas diffusion electrode, membrane-electrode junction, and fuel cell stackN E CHEMCAT CORP·Filed 2021·Application pending·0 cites
- 5059US10030559B2Oxidation catalyst and exhaust gas purification device using sameN E CHEMCAT CORP·Filed 2014·Granted Jul 24, 2018·0 cites·15 claims
Showing the top 50 of 99 patent records by PatentIndex Score.
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