Inventor · disambiguated record
Pierre Dufresne
Also filed as: DUFRESNE PIERRE
58 granted patents·3 pending applications·786 citations·filing 1983–2018
99Inventor score
Files withINST FRANCAIS DU PETROLE19EURECAT SA16EURECAT EUROP RETRAIT CATALYS13DUFRESNE PIERRE5AKZO NOBEL NV1
Top patents by PatentIndex Score
61 records- 0197US9434893B2Process for the start-up of hydrotreatment or hydroconversion unitsEURECAT SA·Filed 2013·Granted Sep 6, 2016·29 cites·18 claims
- 0288US5401392AProcess for eliminating mercury and possibly arsenic in hydrocarbonsINST FRANCAIS DU PETROLE·Filed 1993·Granted Mar 28, 1995·54 cites·24 claims
- 0386US5177280AProcess for producing alkylbenzenes using a catalyst based on a dealuminized y zeolite and a catalyst based on a dealuminized mordeniteINST FRANCAIS DU PETROLE·Filed 1990·Granted Jan 5, 1993·26 cites·18 claims
- 0484US4738941AHydrocracking catalyst for the production of middle distillatesCATALYSE SOC PROD FRANCAIS·Filed 1987·Granted Apr 19, 1988·48 cites·6 claims
- 0581US7713905B2Off-site treatment for hydrogenation catalystsEURECAT SA·Filed 2004·Granted May 11, 2010·27 cites·21 claims
- 0681US4723048AProcess for dismutation and transalkylation of aromatic hydrocarbons in the presence of a zeolite catalystINST FRANCAIS DU PETROLE·Filed 1986·Granted Feb 2, 1988·16 cites·10 claims
- 0780US4738940ANovel hydrocracking or cracking catalyst for hydrocarbon chargesINST FRANCAIS DU PETROLE·Filed 1987·Granted Apr 19, 1988·38 cites·10 claims
- 0879US6753291B2Process for sulfiding an additive-containing catalystAKZO NOBEL NV·Filed 2001·Granted Jun 22, 2004·19 cites·34 claims
- 0979US6559092B1Precarbonisation of a hydrotreatment catalystEURECAT EUROP RETRAIT CATALYS·Filed 2000·Granted May 6, 2003·23 cites·4 claims
- 1079US5803575ALight generator for introducing light into optical fibersPHILIPS CORP·Filed 1996·Granted Sep 8, 1998·62 cites·16 claims
- 1178US8377839B2Process for the regeneration of catalysts for the treatment of hydrocarbonsEURECAT SA·Filed 2009·Granted Feb 19, 2013·5 cites·18 claims
- 1275US9943835B2Process for passivation by a nitrogen-containing compound of a zeolitic catalyst, in particular a hydrocracking catalystDUFRESNE PIERRE·Filed 2012·Granted Apr 17, 2018·3 cites·15 claims
- 1375US9533288B2Method for preparing supported metal catalysts for hydrogenating unsaturated hydrocarbonsEURECAT SA·Filed 2013·Granted Jan 3, 2017·2 cites·23 claims
- 1475US8278234B2Process for the regeneration of catalysts for the treatment of hydrocarbonsGALLIOU PAULINE·Filed 2009·Granted Oct 2, 2012·6 cites·24 claims
- 1575US7582587B2Passivation of sulphur hydroconversion catalystEURECAT SA·Filed 2004·Granted Sep 1, 2009·13 cites·20 claims
- 1672US10828632B2Method for compositional sorting of catalyst or adsorbent in mixtures of catalysts and/or adsorbentsEURECAT SA·Filed 2016·Granted Nov 10, 2020·1 cites·13 claims
- 1772US5306860AMethod of hydroisomerizing paraffins emanating from the Fischer-Tropsch process using catalysts based on H-Y zeoliteINST FRANCAIS DU PETROLE·Filed 1992·Granted Apr 26, 1994·35 cites·21 claims
- 1871US6059956AOff-site pretreatment of a hydrocarbon treatment catalystEURECAT EUROP RETRAIT CATALYS·Filed 1995·Granted May 9, 2000·34 cites·12 claims
- 1970US10195601B2Process for limiting self heating of activated catalystsEURECAT SA·Filed 2015·Granted Feb 5, 2019·1 cites·18 claims
- 2070US8088705B2Process for sulfurization or presulfurization of solid particles of a catalyst or an adsorbentDUFRESNE PIERRE·Filed 2008·Granted Jan 3, 2012·4 cites·18 claims
- 2167US5854162AOffsite regeneration process for a catalyst containing at least one precious metalEURECAT EUROP RETRAIT CATALYS·Filed 1997·Granted Dec 29, 1998·29 cites·14 claims
- 2267US4780436AZeolite of omega structure catalystsINST FRANCAIS DU PETROLE·Filed 1986·Granted Oct 25, 1988·20 cites·15 claims
- 2365US8307985B2Colour sorting of catalyst or adsorbent particlesDUFRESNE PIERRE·Filed 2008·Granted Nov 13, 2012·5 cites·17 claims
- 2464US5508243AHeat treatment of solid catalyst or adsorbent particles in the presence of fluid in a vibrating helical coilEURECAT EUROP RETRAIT CATALYS·Filed 1994·Granted Apr 16, 1996·21 cites·9 claims
- 2562US8772191B2Process for the off site regeneration of solid catalystsKERLEAU PHILIPPE·Filed 2012·Granted Jul 8, 2014·2 cites·20 claims
- 2662US5922638AProcess for presulfurizing hydrotreatment catalystsEURECAT EUROP RETRAIT CATALYS·Filed 1997·Granted Jul 13, 1999·23 cites·14 claims
- 2762US4784750ACatalytic cracking processINST FRANCAIS DU PETROLE·Filed 1986·Granted Nov 15, 1988·17 cites·13 claims
- 2861US5397756AProcess for the presulphurization of hydrocarbon treatment catalystsEURECAT EUROP RETRAIT CATALYS·Filed 1993·Granted Mar 14, 1995·23 cites·13 claims
- 2959US9982202B2Process for the start-up of hydrotreatment or hydroconversion unitsEURECAT SA·Filed 2016·Granted May 29, 2018·0 cites·18 claims
- 3059US5345019AMethod of hydrocracking paraffins emanating from the Fischer-Tropsch process using catalysts based on H-Y zeoliteINST FRANCAIS DU PETROLE·Filed 1992·Granted Sep 6, 1994·18 cites·18 claims
- 3158US2019105649A1Process for Limiting Self-Heating of Activated CatalystsEURECAT SA·Filed 2018·Application pending·0 cites
- 3256US4891200AOmega type zeolite having high thermal stability, its process of preparation and its utilizationCENTRE NAT RECH SCIENT·Filed 1986·Granted Jan 2, 1990·19 cites·20 claims
- 3354US4766099ACatalyst for oil hydrorefining or mild hydrocracking of heavy oil charges to produce middle distillatesINST FRANCAIS DU PETROLE·Filed 1986·Granted Aug 23, 1988·14 cites·14 claims
- 3453US6417134B1Ex-situ presulfuration in the presence of hydrocarbon moleculeEURECAT EUROP RETRAIT CATALYS·Filed 1999·Granted Jul 9, 2002·15 cites·12 claims
- 3552US6100216AProcess for incorporating sulfur into the pores of a hydrocarbon treatment catalystEURECAT EUROP RETRAIT CATALYS·Filed 1997·Granted Aug 8, 2000·19 cites·11 claims
- 3652US4645752AHydrocracking catalyst and process for manufacturing the sameINST FRANCAIS DU PETROLE·Filed 1985·Granted Feb 24, 1987·13 cites·14 claims
- 3752US4501656ADewaxing process employing a catalyst with a highly dealuminated mordenite baseINST FRANCAIS DU PETROLE·Filed 1983·Granted Feb 26, 1985·10 cites·7 claims
- 3851US4977117AProcess of presulfurizing and controlling the activity of catalyst for treating hydrocarbonsEURECAT EUROP RETRAIT CATALYS·Filed 1989·Granted Dec 11, 1990·11 cites·15 claims
- 3951US4935578AMordenite-containing catalyst, its preparation and use for isomerizing cuts of high normal paraffin contentINST FRANCAIS DU PETROLE·Filed 1988·Granted Jun 19, 1990·10 cites·9 claims
- 4050US7501376B2Oxidizing heat treatment passivation of sulphide hydrotreatment catalystEURECAT SA·Filed 2003·Granted Mar 10, 2009·2 cites·20 claims
- 4150US5592748AHeat treatment of solid catalyst or adsorbent particles in the presence of fluid in a vibrating helical coilEURECAT EUROP RETRAIT CATALYS·Filed 1995·Granted Jan 14, 1997·16 cites·12 claims
- 4250US4977121AMordenite-containing catalyst, its preparation and use for isomerizing cuts of high normal paraffin contentINST FRANCAIS DU PETROLE·Filed 1987·Granted Dec 11, 1990·10 cites·6 claims
- 4347US10737939B2Process for producing hydrogen sulfide in a circulating catalytic bed reactorEURECAT SA·Filed 2018·Granted Aug 11, 2020·0 cites·16 claims
- 4444US6077803AProcess for off-site preconditioning of a hydrocarbon processing catalystEURECAT EUROP RETRAIT CATALYS·Filed 1996·Granted Jun 20, 2000·11 cites·17 claims
- 4543US4727217ACatalyst for isomerizing cuts of high normal paraffins contentINST FRANCAIS DU PETROLE·Filed 1987·Granted Feb 23, 1988·7 cites·7 claims
- 4643US2005148456A1Off-site regeneration of reforming catalystsFiled 2004·Application pending·0 cites
- 4741US8598059B2Process for sulfurizing hydrocarbon treatment catalystsDUFRESNE PIERRE·Filed 2010·Granted Dec 3, 2013·0 cites·18 claims
- 4840US10279377B2Method for sorting contaminated catalysts or adsorbentsEURECAT SA·Filed 2016·Granted May 7, 2019·0 cites·16 claims
- 4940US5502269AProcess for the isomerization of external olefins to internal olefins concomitantly with diolefin hydrogenationINST FRANCAIS DU PETROLE·Filed 1994·Granted Mar 26, 1996·6 cites·17 claims
- 5039US10207251B2Process for limiting the emissions of gases from porous particlesEURECAT SA·Filed 2016·Granted Feb 19, 2019·0 cites·20 claims
Showing the top 50 of 61 patent records by PatentIndex Score.
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