Inventor · disambiguated record
Ralph M. Dessau
Also filed as: DESSAU RALPH · DESSAU RALPH M · HEIBA EL-AHMADI I
93 granted patents·1 pending application·2,011 citations·filing 1973–2005
99Inventor score
Top patents by PatentIndex Score
94 records- 0197US4309281ASelective sorption by zeolitesMOBIL OIL CORP·Filed 1979·Granted Jan 5, 1982·48 cites·9 claims
- 0296US5292976AProcess for the selective conversion of naphtha to aromatics and olefinsMOBIL OIL CORP·Filed 1993·Granted Mar 8, 1994·95 cites·21 claims
- 0395US5939597AFluid bed process for para-xylene productionMOBIL OIL CORP·Filed 1997·Granted Aug 17, 1999·81 cites·10 claims
- 0495US4324940AShape selective acid catalyzed reactions of olefins over crystalline zeolitesMOBIL OIL CORP·Filed 1980·Granted Apr 13, 1982·42 cites·17 claims
- 0594US5350504AShape selective hydrogenation of aromatics over modified non-acidic platinum/ZSM-5 catalystsMOBIL OIL CORP·Filed 1992·Granted Sep 27, 1994·101 cites·13 claims
- 0693US6005123AEpoxidation processARCO CHEM TECH·Filed 1999·Granted Dec 21, 1999·60 cites·19 claims
- 0793US5675047AMethod of preparation of ex situ selectivated zeolite catalysts for aromatic alkylation applicationsMOBIL OIL CORP·Filed 1995·Granted Oct 7, 1997·93 cites·76 claims
- 0892US5574199APara-selective aromatization process with ex situ selectivated zeolite catalystMOBIL OIL CORP·Filed 1995·Granted Nov 12, 1996·34 cites·21 claims
- 0992US5488194ASelective production of para-dialkyl substituted benzenes and catalyst thereforMOBIL OIL CORP·Filed 1994·Granted Jan 30, 1996·42 cites·17 claims
- 1092US4443554AActivation of alkali metal zeolite catalysts by steamingMOBIL OIL CORP·Filed 1982·Granted Apr 17, 1984·55 cites·7 claims
- 1191US4704495ACatalytic conversions using shape selective metallic catalystsMOBIL OIL CORP·Filed 1986·Granted Nov 3, 1987·31 cites·12 claims
- 1291US4510045AHydrocarbon dewaxing process using steam-activated alkali metal zeolite catalystMOBIL OIL CORP·Filed 1984·Granted Apr 9, 1985·47 cites·6 claims
- 1390US5254787ADehydrogenation and dehydrocyclization using a non-acidic NU-87 catalystMOBIL OIL CORP·Filed 1992·Granted Oct 19, 1993·31 cites·14 claims
- 1490US5019664AProcess for the conversion of paraffins to olefins and/or aromatics and low acidity zeolite catalyst thereforMOBIL OIL CORP·Filed 1990·Granted May 28, 1991·34 cites·19 claims
- 1590US4884531AOperation of an internal combustion engine with a pre-engine reformerMOBIL OIL CORP·Filed 1988·Granted Dec 5, 1989·47 cites·20 claims
- 1689US6008388AEpoxidation processARCO CHEM TECH·Filed 1999·Granted Dec 28, 1999·84 cites·17 claims
- 1789US4285868APreparation of gamma-butyrolactonesMOBIL OIL CORP·Filed 1977·Granted Aug 25, 1981·18 cites·10 claims
- 1888US4962250AProcess for the conversion of paraffins to olefins and/or aromatics and non-acidic zeolite catalyst thereforMOBIL OIL·Filed 1990·Granted Oct 9, 1990·61 cites·23 claims
- 1987US5108969ALow acidity catalyst for conversion of paraffins to olefins and/or aromaticsMOBIL OIL CORP·Filed 1990·Granted Apr 28, 1992·27 cites·20 claims
- 2087US4886926ACatalytic dehydrogenation of hydrocarbons over tin-containing crystalline microporous materialsMOBIL OIL CORP·Filed 1988·Granted Dec 12, 1989·50 cites·40 claims
- 2186US4175089APreparation of gamma-butyrolactonesMOBIL CORP·Filed 1973·Granted Nov 20, 1979·26 cites·14 claims
- 2285US4182715AAmine derivatives of substituted gamma-butyrolactonesMOBIL CORP·Filed 1978·Granted Jan 8, 1980·12 cites·1 claims
- 2385US4119646AHexahydrobenzofuranone compoundsMOBIL OIL CORP·Filed 1976·Granted Oct 10, 1978·12 cites·3 claims
- 2482US5284986AUpgrading of normal pentane to cyclopenteneMOBIL OIL CORP·Filed 1992·Granted Feb 8, 1994·34 cites·27 claims
- 2582US4453029ASelective sorption by zeolitesMOBIL OIL CORP·Filed 1981·Granted Jun 5, 1984·16 cites·10 claims
- 2680US5013423AReforming and dehydrocyclizationMOBIL OIL CORP·Filed 1989·Granted May 7, 1991·38 cites·66 claims
- 2780US4461845AReactivation of steam-deactivated catalystsMOBIL OIL CORP·Filed 1983·Granted Jul 24, 1984·30 cites·12 claims
- 2879US5192728ATin-colating microporous crystalline materials and their use as dehydrogenation, dehydrocyclization reforming catalystsMOBIL OIL CORP·Filed 1989·Granted Mar 9, 1993·25 cites·32 claims
- 2979US5103066ADehydrogenation of alcohols over non-acidic metal-zeolite catalystsMOBIL OIL CORP·Filed 1990·Granted Apr 7, 1992·16 cites·16 claims
- 3079US4990710ATin-containing microporous crystalline materials and their use as dehydrogenation, dehydrocyclization and reforming catalystsMOBIL OIL CORP·Filed 1988·Granted Feb 5, 1991·27 cites·9 claims
- 3178US5283385AUpgrading of normal pentane to cyclopentaneMOBIL OIL CORP·Filed 1992·Granted Feb 1, 1994·12 cites·25 claims
- 3278US4935566ADehydrocyclization and reforming processMOBIL OIL CORP·Filed 1989·Granted Jun 19, 1990·32 cites·75 claims
- 3378US4652360ABase-exchanged zeolite compositions with shape-selective metal functionsMOBIL OIL CORP·Filed 1986·Granted Mar 24, 1987·33 cites·23 claims
- 3478US4517402ASelective sorption of linear aliphatic compounds by zeolitesMOBIL OIL CORP·Filed 1983·Granted May 14, 1985·12 cites·8 claims
- 3577US6960671B2Process for direct oxidation of propylene to propylene oxide and large particle size titanium silicalite catalysts for use thereinARCO CHEM TECH·Filed 2002·Granted Nov 1, 2005·14 cites·18 claims
- 3677US4554262AChiral hydrogenating catalystsMOBIL OIL CORP·Filed 1984·Granted Nov 19, 1985·11 cites·11 claims
- 3777US4413154ADiels-Alder cyclodimerization over a carbon molecular sieve catalystMOBIL OIL CORP·Filed 1982·Granted Nov 1, 1983·11 cites·4 claims
- 3876US7399726B2Process for direct oxidation of propylene to propylene oxide and large particle size titanium silicalite catalysts for use thereinLYONDELL CHEMICAL TECH LP·Filed 2005·Granted Jul 15, 2008·3 cites·19 claims
- 3976US4384153ADiels-Alder Cyclization over low acidity large-pore zeolitesMOBIL OIL CORP·Filed 1982·Granted May 17, 1983·11 cites·4 claims
- 4076US4377503AShape selective metallic catalysisMOBIL OIL CORP·Filed 1980·Granted Mar 22, 1983·11 cites·21 claims
- 4176US4011239ASelective reactions of free radicals with olefins in the presence of an ion of mn, v, or ceMOBIL OIL CORP·Filed 1973·Granted Mar 8, 1977·9 cites·58 claims
- 4276US3992417AProcess for manufacture of gamma butyrolactonesMOBIL OIL CORP·Filed 1974·Granted Nov 16, 1976·9 cites·11 claims
- 4375US5292980ABase-catalyzed reactions using zeolite catalystsMOBIL OIL CORP·Filed 1991·Granted Mar 8, 1994·11 cites·3 claims
- 4475US4076505ACoal desulfurization processMOBIL OIL CORP·Filed 1976·Granted Feb 28, 1978·22 cites·6 claims
- 4574US5037529AIntegrated low pressure aromatization processMOBIL OIL CORP·Filed 1989·Granted Aug 6, 1991·28 cites·15 claims
- 4674US5026919ABase-catalyzed reactions using zeolite catalystsMOBIL OIL CORP·Filed 1985·Granted Jun 25, 1991·9 cites·6 claims
- 4773US4665247ADiels-Alder cyclization over copper-containing ZSM-12MOBIL OIL CORP·Filed 1985·Granted May 12, 1987·10 cites·4 claims
- 4873US4423280ASelective sorption by zeolitesMOBIL OIL CORP·Filed 1981·Granted Dec 27, 1983·16 cites·15 claims
- 4972US5124497AProduction of mono-substituted alkylaromatics from C8 +N-paraffinsMOBIL OIL CORP·Filed 1989·Granted Jun 23, 1992·10 cites·33 claims
- 5072US4487688ASelective sorption of lubricants of high viscosity indexMOBIL OIL CORP·Filed 1982·Granted Dec 11, 1984·9 cites·15 claims
Showing the top 50 of 94 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Ralph M. Dessau files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →