Inventor · disambiguated record
John E. Duddy
Also filed as: DUDDY JOHN · DUDDY JOHN E
11 granted patents·1 pending application·217 citations·filing 1997–2019
90Inventor score
Top patents by PatentIndex Score
12 records- 0196US7938952B2Process for multistage residue hydroconversion integrated with straight-run and conversion gasoils hydroconversion stepsINST FRANCAIS DU PETROLE·Filed 2008·Granted May 10, 2011·67 cites·12 claims
- 0289US7704377B2Process and installation for conversion of heavy petroleum fractions in a boiling bed with integrated production of middle distillates with a very low sulfur contentINST FRANCAIS DU PETROLE·Filed 2006·Granted Apr 27, 2010·39 cites·37 claims
- 0386US10487274B2Integrated coal liquefaction, petroleum or biomass facility with decreased carbon dioxide production and higher carbon and thermal efficienciesAXENS NORTH AMERICA INC·Filed 2018·Granted Nov 26, 2019·3 cites·7 claims
- 0484US10800982B2Processing scheme for production of low sulfur bunker fuelPEER ERIC D·Filed 2019·Granted Oct 13, 2020·11 cites·20 claims
- 0581US5925238ACatalytic multi-stage hydrodesulfurization of metals-containing petroleum residua with cascading of rejuvenated catalystIFP NORTH AMERICA·Filed 1997·Granted Jul 20, 1999·66 cites·10 claims
- 0668US7919054B2Process and installation for conversion of heavy petroleum fractions in a boiling bed with integrated production of middle distillates with a very low sulfur contentIFP Energies Nouvelles·Filed 2010·Granted Apr 5, 2011·2 cites·8 claims
- 0767US7938953B2Selective heavy gas oil recycle for optimal integration of heavy oil conversion and vacuum gas oil treatingINST FRANCAIS DU PETROLE·Filed 2008·Granted May 10, 2011·3 cites·3 claims
- 0866US8226821B2Direct coal liquefaction with integrated product hydrotreating and catalyst cascadingMACARTHUR JAMES B·Filed 2009·Granted Jul 24, 2012·3 cites·7 claims
- 0965US8252169B2Process for upgrading coal pyrolysis oilsMACARTHUR JAMES B·Filed 2008·Granted Aug 28, 2012·3 cites·23 claims
- 1052US5906953ACatalyst rejuvenation processHRI·Filed 1997·Granted May 25, 1999·20 cites·10 claims
- 1143US10400108B2Carbon black feedstock from direct coal liquefactionCOLYAR JAMES J·Filed 2016·Granted Sep 3, 2019·0 cites·7 claims
- 1235US2005075527A1Method and processing equipment for hydrocarbons and for separation of the phases produced by said processingINST FRANCAIS DU PETROLE·Filed 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →