Inventor · disambiguated record
Andrew Francis Chiffey
Also filed as: CHIFFEY ANDREW · CHIFFEY ANDREW FRANCIS
65 granted patents·27 pending applications·780 citations·filing 2002–2025
99Inventor score
Top patents by PatentIndex Score
92 records- 0198US10625208B2Oxidation catalyst for treating the exhaust gas of a compression ignition engineJOHNSON MATTHEY PLC·Filed 2019·Granted Apr 21, 2020·15 cites·13 claims
- 0298US10569257B2Oxidation catalyst for a compression ignition engineJOHNSON MATTHEY PLC·Filed 2018·Granted Feb 25, 2020·17 cites·16 claims
- 0398US10286359B2Diesel oxidation catalyst and exhaust systemJOHNSON MATTHEY PLC·Filed 2015·Granted May 14, 2019·21 cites·20 claims
- 0498US9987618B2Oxidation catalyst for a compression ignition engineJOHNSON MATTHEY PLC·Filed 2017·Granted Jun 5, 2018·20 cites·12 claims
- 0598US9849423B2Diesel oxidation catalyst and exhaust systemJOHNSON MATTHEY PLC·Filed 2015·Granted Dec 26, 2017·16 cites·18 claims
- 0698US9643161B2Oxidation catalyst for a compression ignition engineJOHNSON MATTHEY PLC·Filed 2014·Granted May 9, 2017·25 cites·12 claims
- 0798US9636634B2Diesel oxidation catalyst and exhaust systemJOHNSON MATTHEY PLC·Filed 2015·Granted May 2, 2017·33 cites·20 claims
- 0898US9527035B2Catalysed soot filter for treating the exhaust gas of a compression ignition engineJOHNSON MATTHEY PLC·Filed 2015·Granted Dec 27, 2016·16 cites·19 claims
- 0998US9527034B2Oxidation catalyst for treating the exhaust gas of a compression ignition engineJOHNSON MATTHEY PLC·Filed 2015·Granted Dec 27, 2016·28 cites·20 claims
- 1098US8667785B2Catalysed substrate monolithJOHNSON MATTHEY PLC·Filed 2012·Granted Mar 11, 2014·75 cites·22 claims
- 1198US8540952B2Catalyzed substrate and exhaust system for internal combustion engineSWALLOW DANIEL·Filed 2012·Granted Sep 24, 2013·41 cites·6 claims
- 1297US11794169B2Oxidation catalyst for a compression ignition engineJOHNSON MATTHEY PLC·Filed 2020·Granted Oct 24, 2023·4 cites·15 claims
- 1397US11338245B2Diesel oxidation catalyst and exhaust systemJOHNSON MATTHEY PLC·Filed 2019·Granted May 24, 2022·8 cites·22 claims
- 1497US10821401B2Diesel oxidation catalyst and exhaust systemJOHNSON MATTHEY PLC·Filed 2018·Granted Nov 3, 2020·8 cites·9 claims
- 1597US10688475B2Catalysed substrate monolithJOHNSON MATTHEY PLC·Filed 2019·Granted Jun 23, 2020·8 cites·30 claims
- 1697US10376867B2Oxidation catalyst for internal combustion engine exhaust gas treatmentJOHNSON MATTHEY PLC·Filed 2017·Granted Aug 13, 2019·9 cites·18 claims
- 1797US10207254B2Catalysed substrate monolithJOHNSON MATTHEY PLC·Filed 2017·Granted Feb 19, 2019·10 cites·9 claims
- 1897US9868115B2Oxidation catalyst for internal combustion engine exhaust gas treatmentJOHNSON MATTHEY PLC·Filed 2015·Granted Jan 16, 2018·13 cites·21 claims
- 1997US9707542B2Oxidation catalyst for a compression ignition engineJOHNSON MATTHEY PLC·Filed 2014·Granted Jul 18, 2017·23 cites·32 claims
- 2097US9597661B2Catalysed substrate monolithJOHNSON MATTHEY PLC·Filed 2015·Granted Mar 21, 2017·16 cites·18 claims
- 2197US9046022B2Catalysed substrate monolithJOHNSON MATTHEY PLC·Filed 2014·Granted Jun 2, 2015·21 cites·46 claims
- 2297US9034286B2Oxidation catalyst for treating the exhaust gas of a compression ignition engineJOHNSON MATTHEY PLC·Filed 2013·Granted May 19, 2015·32 cites·16 claims
- 2397US8668891B2Exhaust system for a lean-burn IC engine comprising a PGM component and a SCR catalystJOHNSON MATTHEY PLC·Filed 2012·Granted Mar 11, 2014·27 cites·12 claims
- 2496US11845064B2Composite, zoned oxidation catalyst for a compression ignition internal combustion engineJOHNSON MATTHEY PLC·Filed 2020·Granted Dec 19, 2023·7 cites·16 claims
- 2596US11167246B2Diesel oxidation catalyst and exhaust systemJOHNSON MATTHEY PLC·Filed 2018·Granted Nov 9, 2021·6 cites·25 claims
- 2696US9005559B2Oxidation catalyst for internal combustion engine exhaust gas treatmentJOHNSON MATTHEY JAPAN G K·Filed 2014·Granted Apr 14, 2015·37 cites·21 claims
- 2795US10773251B2Oxidation catalyst for internal combustion engine exhaust gas treatmentJOHNSON MATTHEY PLC·Filed 2019·Granted Sep 15, 2020·4 cites·20 claims
- 2895US9611773B2Zoned catalysed substrate monolithJOHNSON MATTHEY PLC·Filed 2013·Granted Apr 4, 2017·17 cites·22 claims
- 2995US8795617B2Catalyzed substrate and exhaust system for internal combustion engineSWALLOW DANIEL·Filed 2013·Granted Aug 5, 2014·21 cites·6 claims
- 3095US8652429B2Oxidation catalyst for internal combustion engine exhaust gas treatmentJOHNSON MATTHEY JAPAN G K GODO KAISHA·Filed 2012·Granted Feb 18, 2014·51 cites·16 claims
- 3194US10537879B2Catalyst and method of preparationJOHNSON MATTHEY PLC·Filed 2017·Granted Jan 21, 2020·7 cites·24 claims
- 3294US10279314B2Oxidation catalyst for treating the exhaust gas of a compression ignition engineJOHNSON MATTHEY PLC·Filed 2016·Granted May 7, 2019·5 cites·20 claims
- 3394US9259684B2Exhaust system for a lean-burn internal combustion engine including SCR catalystJOHNSON MATTHEY PLC·Filed 2012·Granted Feb 16, 2016·20 cites·45 claims
- 3494US9057310B2Catalysed soot filter for treating the exhaust gas of a compression ignition engineJOHNSON MATTHEY PLC·Filed 2013·Granted Jun 16, 2015·10 cites·19 claims
- 3593US9333461B2Substrate monolith comprising SCR catalystJOHNSON MATTHEY PLC·Filed 2012·Granted May 10, 2016·21 cites·14 claims
- 3692US10240500B2Exhaust system for a compression ignition engine having a capture face for volatilised platinumJOHNSON MATTHEY PLC·Filed 2016·Granted Mar 26, 2019·5 cites·15 claims
- 3792US8940259B2Catalysed soot filterJOHNSON MATTHEY PLC·Filed 2013·Granted Jan 27, 2015·11 cites·20 claims
- 3891US11103855B2Catalyst with stable nitric oxide (NO) oxidation performanceJOHNSON MATTHEY PLC·Filed 2016·Granted Aug 31, 2021·9 cites·9 claims
- 3989US9140167B2Oxidation catalyst for a lean burn internal combustion engineBERGEAL DAVID·Filed 2011·Granted Sep 22, 2015·13 cites·13 claims
- 4087US8398925B2Washcoated particulate filter substrateCHIFFEY ANDREW FRANCIS·Filed 2007·Granted Mar 19, 2013·11 cites·15 claims
- 4187US7832203B2Exhaust system for a lean burn internal combustion engineJOHNSON MATTHEY PLC·Filed 2005·Granted Nov 16, 2010·9 cites·20 claims
- 4285US9261004B2Filter for filtering particulate matter from exhaust gas emitted from a compression ignition engineARNOLD LOUISE·Filed 2013·Granted Feb 16, 2016·3 cites·6 claims
- 4385US8608820B2Filter for filtering particulate matter from exhaust gas emitted from a compression ignition engineARNOLD LOUISE·Filed 2010·Granted Dec 17, 2013·13 cites·31 claims
- 4484US10213775B2Passive NOx adsorberJOHNSON MATTHEY PLC·Filed 2016·Granted Feb 26, 2019·3 cites·14 claims
- 4579US12296319B2Composite, zoned oxidation catalys for a compression ignition internal combustion engineJOHNSON MATTHEY PLC·Filed 2023·Granted May 13, 2025·0 cites·20 claims
- 4679US11103858B2Passive NOx adsorberJOHNSON MATTHEY PLC·Filed 2019·Granted Aug 31, 2021·1 cites·11 claims
- 4779US10151227B2Nitrogen oxides (NOx) storage catalystJOHNSON MATTHEY PLC·Filed 2016·Granted Dec 11, 2018·2 cites·21 claims
- 4878US2025288980A1Composite, zoned oxidation catalyst for a compression ignition internal combustion engineJOHNSON MATTHEY PLC·Filed 2025·Application pending·0 cites
- 4976US12129778B2System comprising vehicular compression ignition engine and an emissions control device comprising an electrically heatable elementJOHNSON MATTHEY PLC·Filed 2023·Granted Oct 29, 2024·0 cites·6 claims
- 5075US8986635B2Exhaust system for a lean-burn IC engine comprising a PGM component and a SCR catalystJOHNSON MATTHEY PLC·Filed 2014·Granted Mar 24, 2015·2 cites·20 claims
Showing the top 50 of 92 patent records by PatentIndex Score.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →