Inventor · disambiguated record
Keiichi Narita
Also filed as: NARITA KEIICHI
41 granted patents·12 pending applications·243 citations·filing 2003–2022
97Inventor score
Files withIDEMITSU KOSAN CO14CATALER CORP11MATSUEDA SATOSHI5DAIHATSU MOTOR CO LTD4TOYOTA MOTOR CO LTD4
Top patents by PatentIndex Score
53 records- 0196US10159934B2Exhaust gas purification catalystCATALER CORP·Filed 2016·Granted Dec 25, 2018·25 cites·14 claims
- 0294US11224840B2Exhaust gas purification catalystTOYOTA MOTOR CO LTD·Filed 2016·Granted Jan 18, 2022·8 cites·13 claims
- 0393US10731532B2Exhaust gas purification catalystTOYOTA MOTOR CO LTD·Filed 2016·Granted Aug 4, 2020·6 cites·12 claims
- 0493US8361925B2Exhaust gas-purifying catalystCATALER CORP·Filed 2010·Granted Jan 29, 2013·18 cites·8 claims
- 0593US8318632B2Exhaust gas purification catalystMATSUEDA SATOSHI·Filed 2011·Granted Nov 27, 2012·15 cites·10 claims
- 0692US10307736B2Exhaust gas purification catalystSAITO YOSHINORI·Filed 2018·Granted Jun 4, 2019·11 cites·2 claims
- 0790US10539056B2Exhaust gas purification catalystTOYOTA MOTOR CO LTD·Filed 2016·Granted Jan 21, 2020·4 cites·12 claims
- 0890US10112181B2Catalyst for purification of exhaust gas, method for producing the same, and method for purification of exhaust gas using the sameTOYOTA CHUO KENKYUSHO KK·Filed 2016·Granted Oct 30, 2018·5 cites·9 claims
- 0989US7205257B2Catalyst for clarifying exhaust gasCATALER CORP·Filed 2003·Granted Apr 17, 2007·35 cites·21 claims
- 1088US7446070B2Exhaust gas-purifying catalystCATALER CORP·Filed 2006·Granted Nov 4, 2008·11 cites·23 claims
- 1187US10323554B2Exhaust gas purification catalystSUZUKI HIROMASA·Filed 2016·Granted Jun 18, 2019·3 cites·8 claims
- 1287US7601325B2Perovskite-type composite oxide, catalyst composition and method for producing perovskite-type composite oxideDAIHATSU MOTOR CO LTD·Filed 2005·Granted Oct 13, 2009·7 cites·6 claims
- 1385US8187996B2Exhaust gas-purifying catalystMATSUEDA SATOSHI·Filed 2011·Granted May 29, 2012·6 cites·16 claims
- 1485US7795170B2CatalystDAIHATSU MOTOR CO LTD·Filed 2007·Granted Sep 14, 2010·8 cites·9 claims
- 1584US10011802B2Lubricating oil compositionIDEMITSU KOSAN CO·Filed 2015·Granted Jul 3, 2018·2 cites·10 claims
- 1684US9849443B2Exhaust gas purification catalystCATALER CORP·Filed 2014·Granted Dec 26, 2017·6 cites·8 claims
- 1783US10920162B2Lubricant composition, lubricating method and transmissionIDEMITSU KOSAN CO·Filed 2017·Granted Feb 16, 2021·1 cites·17 claims
- 1881US8569198B2Exhaust gas-purifying catalystHOSHINO SHO·Filed 2012·Granted Oct 29, 2013·6 cites·12 claims
- 1978US9506010B2Lubricant composition and continuously-variable transmissionNARITA KEIICHI·Filed 2010·Granted Nov 29, 2016·2 cites·16 claims
- 2077US8975204B2Exhaust-gas-purifying catalystHORI ASUKA·Filed 2004·Granted Mar 10, 2015·20 cites·7 claims
- 2177US7622418B2Method for producing exhaust gas purifying catalystDAIHATSU MOTOR CO LTD·Filed 2003·Granted Nov 24, 2009·14 cites·9 claims
- 2276US7956005B2Exhaust gas-purifying catalystCATALER CORP·Filed 2008·Granted Jun 7, 2011·5 cites·8 claims
- 2373US9574157B2Lubricant compositionIDEMITSU KOSAN CO·Filed 2013·Granted Feb 21, 2017·1 cites·10 claims
- 2471US12410374B2Lubricating oil composition, lubrication method, and transmissionIDEMITSU KOSAN CO·Filed 2022·Granted Sep 9, 2025·0 cites·19 claims
- 2570US8158552B2Exhaust gas purifying catalystHORI ASUKA·Filed 2007·Granted Apr 17, 2012·5 cites·16 claims
- 2670US8133839B2Exhaust gas-purifying catalystMATSUEDA SATOSHI·Filed 2006·Granted Mar 13, 2012·2 cites·21 claims
- 2768US9029305B2Lubricant composition and continuously variable transmissionNARITA KEIICHI·Filed 2009·Granted May 12, 2015·1 cites·13 claims
- 2867US9358535B2Exhaust gas-purifying catalystMATSUEDA SATOSHI·Filed 2012·Granted Jun 7, 2016·1 cites·12 claims
- 2967US9295945B2Exhaust gas-purifying catalystMATSUEDA SATOSHI·Filed 2012·Granted Mar 29, 2016·1 cites·15 claims
- 3067US8993475B2Oxygen storage materialKIMURA MAREO·Filed 2007·Granted Mar 31, 2015·2 cites·10 claims
- 3165US11162049B2Lubricant composition, mechanical device including lubricant composition, and method of producing lubricant compositionIDEMITSU KOSAN CO·Filed 2019·Granted Nov 2, 2021·0 cites·20 claims
- 3263US7976887B2Method of extracting volatile component from tasty material, the volatile component and foods and drinks containing the volatile componentPOKKA CORP·Filed 2004·Granted Jul 12, 2011·11 cites·13 claims
- 3362US11946013B2Lubricant compositionIDEMITSU KOSAN CO·Filed 2021·Granted Apr 2, 2024·0 cites·20 claims
- 3461US2014364350A1Lubricating oil compositionIDEMITSU KOSAN CO·Filed 2012·Application pending·0 cites
- 3559US12303873B2Exhaust gas purification catalystCATALER CORP·Filed 2021·Granted May 20, 2025·0 cites·7 claims
- 3658US11084022B2Pd-supporting Zr-based composite oxideCATALER CORP·Filed 2016·Granted Aug 10, 2021·0 cites·14 claims
- 3758US2010004122A1Exhaust Gas-Purifying CatalystCATALER CORP·Filed 2009·Application pending·0 cites
- 3857US12275910B2Lubricating oil compositionIDEMITSU KOSAN CO·Filed 2021·Granted Apr 15, 2025·0 cites·20 claims
- 3957US2016186091A1Lubricating oil compositionIDEMITSU KOSAN CO·Filed 2016·Application pending·0 cites
- 4056US2021371766A1Lubricating oil composition, mechanical device equipped with lubricating oil composition, and method for producing lubricating oil compositionIDEMITSU KOSAN CO·Filed 2019·Application pending·0 cites
- 4154US11072759B2Lubricating oil composition, lubrication method, and transmissionIDEMITSU KOSAN CO·Filed 2017·Granted Jul 27, 2021·0 cites·11 claims
- 4254US2014038812A1Exhaust gas-purifying catalystHORI ASUKA·Filed 2013·Application pending·0 cites
- 4353US10413895B2Exhaust gas purification catalystTOYOTA MOTOR CO LTD·Filed 2016·Granted Sep 17, 2019·0 cites·12 claims
- 4453US2009131252A1Catalyst CompositionTANAKA HIROHISA·Filed 2006·Application pending·0 cites
- 4550US2009131251A1Exhaust gas-purifying catalystCATALER CORP·Filed 2008·Application pending·0 cites
- 4650US2023265353A1Lubricating oil compositionIDEMITSU KOSAN CO·Filed 2021·Application pending·0 cites
- 4749US2022250038A1Catalyst Material for Methane RemovalCATALER CORP·Filed 2020·Application pending·0 cites
- 4843US8598100B2Lubricating oil additive and lubricating oil compositionKOSHIMA HIROAKI·Filed 2004·Granted Dec 3, 2013·1 cites·13 claims
- 4942US2009023580A1Catalyst CompositionDAIHATSU MOTOR CO LTD·Filed 2006·Application pending·0 cites
- 5041US10407642B2Lubricant compositionIDEMITSU KOSAN CO·Filed 2016·Granted Sep 10, 2019·0 cites·16 claims
Showing the top 50 of 53 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →