Inventor · disambiguated record
Roger A. Grey
Also filed as: GREY ROGER · GREY ROGER A
75 granted patents·7 pending applications·1,238 citations·filing 1979–2016
99Inventor score
Top patents by PatentIndex Score
82 records- 0198US6498259B1Direct epoxidation process using a mixed catalyst systemARCO CHEM TECH·Filed 2001·Granted Dec 24, 2002·81 cites·20 claims
- 0295US7387981B1Direct epoxidation catalyst and processLYONDELL CHEMICAL TECH LP·Filed 2007·Granted Jun 17, 2008·26 cites·20 claims
- 0395US4744796AMicroemulsion fuel systemARCO CHEM CO·Filed 1986·Granted May 17, 1988·76 cites·12 claims
- 0494US6194591B1Aqueous epoxidation process using modified titanium zeoliteARCO CHEM TECH·Filed 2000·Granted Feb 27, 2001·38 cites·20 claims
- 0594US5091543APreparation of cyclic carbonates using alkylammonium and tertiary amine catalystsARCO CHEM TECH·Filed 1990·Granted Feb 25, 1992·59 cites·31 claims
- 0693US6005123AEpoxidation processARCO CHEM TECH·Filed 1999·Granted Dec 21, 1999·60 cites·19 claims
- 0793US4731497AAlkylation of aromatics with alpha-olefinsATLANTIC RICHFIELD CO·Filed 1986·Granted Mar 15, 1988·39 cites·6 claims
- 0892US5171830ACatalytic process for the preparation of polyalkylene carbonatesARCO CHEM TECH·Filed 1991·Granted Dec 15, 1992·54 cites·15 claims
- 0991US7314545B2Desulfurization processLYONDELL CHEMICAL TECH LP·Filed 2004·Granted Jan 1, 2008·49 cites·11 claims
- 1090US7615654B2Direct epoxidation processLYONDELL CHEMICAL TECH LP·Filed 2005·Granted Nov 10, 2009·8 cites·20 claims
- 1189US6008388AEpoxidation processARCO CHEM TECH·Filed 1999·Granted Dec 28, 1999·84 cites·17 claims
- 1288US7648936B2Spray-dried transition metal zeolite and its useLYONDELL CHEMICAL TECH LP·Filed 2008·Granted Jan 19, 2010·11 cites·21 claims
- 1388US6958405B2Polymer-encapsulated titanium zeolites for oxidation reactionsARCO CHEM TECH·Filed 2004·Granted Oct 25, 2005·31 cites·18 claims
- 1488US5364909AGraft polymer compositions containing mono-amine functionalized polyoxyalkylene ethersARCO CHEM TECH·Filed 1993·Granted Nov 15, 1994·46 cites·17 claims
- 1585US6867312B1Propylene oxide processARCO CHEM TECH·Filed 2004·Granted Mar 15, 2005·22 cites·9 claims
- 1685US6441204B1Direct epoxidation process using a mixed catalyst systemARCO CHEM TECH·Filed 2001·Granted Aug 27, 2002·14 cites·20 claims
- 1784US7531675B1Direct epoxidation process using improved catalyst compositionLYONDELL CHEMICAL TECH LP·Filed 2007·Granted May 12, 2009·3 cites·11 claims
- 1883US6403815B1Direct epoxidation process using a mixed catalyst systemARCO CHEM TECH·Filed 2001·Granted Jun 11, 2002·22 cites·22 claims
- 1983US6037484AEpoxidation processARCO CHEM TECH·Filed 1998·Granted Mar 14, 2000·28 cites·25 claims
- 2082US4359404AHydrogenation of esters using alkali doped heterogeneous Group VIII transition metal catalystsALLIED CORP·Filed 1981·Granted Nov 16, 1982·32 cites·31 claims
- 2181US7432384B2Direct epoxidation processLYONDELL CHEMICAL TECH LP·Filed 2005·Granted Oct 7, 2008·5 cites·20 claims
- 2280US8710274B2Method of purifying crude acetone streamPOURREAU DANIEL B·Filed 2012·Granted Apr 29, 2014·3 cites·19 claims
- 2380US7256149B2Catalyst regeneration processLYONDELL CHEMICAL TECH LP·Filed 2004·Granted Aug 14, 2007·15 cites·18 claims
- 2480US5939569AEpoxidation processFiled 1998·Granted Aug 17, 1999·22 cites·11 claims
- 2580US4268454AAnionic group VIII metal hydride catalystsALLIED CHEM·Filed 1979·Granted May 19, 1981·25 cites·11 claims
- 2680US4254059AProcess for hydrogenation of nitrilesALLIED CHEM·Filed 1979·Granted Mar 3, 1981·27 cites·23 claims
- 2779US7671222B2Direct epoxidation process using a mixed catalyst systemLYONDELL CHEMICAL TECH LP·Filed 2006·Granted Mar 2, 2010·4 cites·17 claims
- 2878US7030255B2Oxidation process with in-situ H202 generation and polymer-encapsulated catalysts thereforLYONDELL CHEMICAL TECH LP·Filed 2004·Granted Apr 18, 2006·15 cites·24 claims
- 2978US6310224B1Epoxidation catalyst and processARCO CHEM TECH·Filed 2001·Granted Oct 30, 2001·13 cites·5 claims
- 3078US5292817AFlame-retardant thermoplastic copolymers based on vinyl phosphonate derivatives grafted onto rubberARCO CHEM TECH·Filed 1993·Granted Mar 8, 1994·25 cites·14 claims
- 3178US4590313AMethod for producing primary alcohols by catalytic hydrogenation of terminal epoxidesATLANTIC RICHFIELD CO·Filed 1982·Granted May 20, 1986·14 cites·2 claims
- 3277US6441203B1Direct epoxidation process using a palladium on niobium-containing supportARCO CHEM TECH·Filed 2001·Granted Aug 27, 2002·7 cites·17 claims
- 3376US8440846B2Direct epoxidation processDANG VU A·Filed 2010·Granted May 14, 2013·3 cites·12 claims
- 3475US7381675B1Direct epoxidation catalystLYONDELL CHEMICAL TECH LP·Filed 2006·Granted Jun 3, 2008·3 cites·20 claims
- 3575US7057056B1Epoxidation catalystLYONDELL CHEMICAL TECH LP·Filed 2004·Granted Jun 6, 2006·14 cites·20 claims
- 3674US7595410B2Direct epoxidation process using improved catalyst compositionLYONDELL CHEMICAL TECH LP·Filed 2006·Granted Sep 29, 2009·1 cites·19 claims
- 3774US6468496B2Process for producing hydrogen peroxideARCO CHEM TECH·Filed 2000·Granted Oct 22, 2002·9 cites·9 claims
- 3873US5210163AProcess for preparing alternating copolymers of olefinically unsaturated sulfonate salts and unsaturated dicarboxylic acid anhydridesARCO CHEM TECH·Filed 1991·Granted May 11, 1993·22 cites·1 claims
- 3971US4232170AProcess for homogeneous hydrogenation of estersALLIED CHEM·Filed 1979·Granted Nov 4, 1980·15 cites·8 claims
- 4069US5401856AProcess for making pyrrolidonesARCO CHEM TECH·Filed 1994·Granted Mar 28, 1995·11 cites·18 claims
- 4168US7718158B2Polymer-encapsulated ion-exchange resinLYONDELL CHEMICAL TECH LP·Filed 2005·Granted May 18, 2010·1 cites·13 claims
- 4267US7528269B2Process for oxidizing organic compoundsLYONDELL CHEMICAL TECH LP·Filed 2005·Granted May 5, 2009·1 cites·14 claims
- 4367US7271117B2Epoxidation catalystLYONDELL CHEMICAL TECH LP·Filed 2004·Granted Sep 18, 2007·6 cites·24 claims
- 4466US7232783B2Propylene oxide catalyst and useLYONDELL CHEMICAL TECH LP·Filed 2005·Granted Jun 19, 2007·1 cites·11 claims
- 4565US5360787ADispersant compositions comprising sulfonated isobutylene maleic anhydride copolymer for subterranean well drilling and completionATLANTIC RICHFIELD CO·Filed 1992·Granted Nov 1, 1994·24 cites·5 claims
- 4665US4224458AProcess for homogeneous hydrogenation of polycyclic aromatic hydrocarbonsALLIED CHEM·Filed 1979·Granted Sep 23, 1980·6 cites·19 claims
- 4764US5401857AProcess for making γ-butyrolactonesARCO CHEM TECH·Filed 1994·Granted Mar 28, 1995·8 cites·20 claims
- 4864US5115060AAlternating copolymers of olefinically unsaturated sulfonate salts and unsaturated imidesARCO CHEM TECH·Filed 1990·Granted May 19, 1992·15 cites·19 claims
- 4963US7470801B1Direct epoxidation process using a mixed catalyst systemLYONDELL CHEMICAL TECH LP·Filed 2007·Granted Dec 30, 2008·0 cites·16 claims
- 5063US5892066APropylene oxide and derivatives processARCO CHEM TECH·Filed 1997·Granted Apr 6, 1999·8 cites·7 claims
Showing the top 50 of 82 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →