Inventor · disambiguated record
Leo Ernest Manzer
Also filed as: MANZER LEO · MANZER LEO E · MANZER LEO ERNEST
156 granted patents·58 pending applications·2,287 citations·filing 1975–2017
99Inventor score
Top patents by PatentIndex Score
214 records- 0199US4902838AIsomerization of saturated fluorohydrocarbonsDU PONT·Filed 1988·Granted Feb 20, 1990·125 cites·12 claims
- 0298US7157588B2Ionic liquidsDU PONT·Filed 2005·Granted Jan 2, 2007·50 cites·4 claims
- 0398US6720459B2Continuous process for the preparation of polytrimethylene ether glycolDU PONT·Filed 2000·Granted Apr 13, 2004·137 cites·39 claims
- 0497US6977291B2Production of polytrimethylene ether glycol and copolymers thereofDU PONT·Filed 2000·Granted Dec 20, 2005·78 cites·87 claims
- 0597US6686310B1High surface area sol-gel route prepared hydrogenation catalystsDU PONT·Filed 2000·Granted Feb 3, 2004·118 cites·2 claims
- 0697US5057634AMultistep synthesis of hexafluoropropyleneDU PONT·Filed 1989·Granted Oct 15, 1991·98 cites·6 claims
- 0797US4766260AGas-phase fluorination processDU PONT·Filed 1987·Granted Aug 23, 1988·78 cites·8 claims
- 0896US8378160B2Renewable compositionsGEVO INC·Filed 2012·Granted Feb 19, 2013·31 cites·21 claims
- 0995US8785667B2Processes for preparing diacids, dialdehydes and polymersDU PONT·Filed 2013·Granted Jul 22, 2014·8 cites·6 claims
- 1095US8524923B2Processes for preparing diacids, dialdehydes and polymersGRUSHIN VLADIMIR·Filed 2012·Granted Sep 3, 2013·11 cites·9 claims
- 1195US8084626B1Processes for the production of hydrogenated productsFRUCHEY OLAN S·Filed 2011·Granted Dec 27, 2011·11 cites·20 claims
- 1295US7705192B2Catalytic conversion of ethanol and methanol to an isobutanol-containing reaction product using a thermally decomposed hydrotalcite catalystDU PONT·Filed 2008·Granted Apr 27, 2010·19 cites·11 claims
- 1395US7700813B2Catalytic conversion of ethanol and methanol to an isobutanol-containing reaction product using a thermally decomposed hydrotalcite containing the anion of ethylenediaminetetraacetic acidDU PONT·Filed 2008·Granted Apr 20, 2010·19 cites·13 claims
- 1495US7153996B2Preparation of levulinic acid esters and formic acid esters from biomass and olefinsDU PONT·Filed 2003·Granted Dec 26, 2006·51 cites·17 claims
- 1595US4843181AProcess for the manufacture of 1,1,1-trifluorodichloroethane and 1,1,1,2-tetrafluorochloroethaneDU PONT·Filed 1987·Granted Jun 27, 1989·54 cites·11 claims
- 1694US7700810B2Catalytic conversion of ethanol to a 1-butanol-containing reaction product using a thermally decomposed hydrotalcite catalystDU PONT·Filed 2008·Granted Apr 20, 2010·21 cites·10 claims
- 1794US7067677B2Production of dihydronepetalactone by hydrogenation of nepetalactoneDU PONT·Filed 2003·Granted Jun 27, 2006·38 cites·20 claims
- 1894US5068472AMultistep synthesis of hexafluoropropyleneDU PONT·Filed 1989·Granted Nov 26, 1991·51 cites·6 claims
- 1994US4057565A2-Dialkylaminobenzyl and 2-dialkylaminomethylphenyl derivatives of selected transition metalsDU PONT·Filed 1975·Granted Nov 8, 1977·56 cites·11 claims
- 2093US8487149B2Renewable compositionsGRUBER PATRICK R·Filed 2012·Granted Jul 16, 2013·11 cites·19 claims
- 2193US8450543B2Integrated methods of preparing renewable chemicalsPETERS MATTHEW W·Filed 2011·Granted May 28, 2013·26 cites·19 claims
- 2293US8193402B2Renewable compositionsGRUBER PATRICK R·Filed 2008·Granted Jun 5, 2012·34 cites·23 claims
- 2393US7745672B2Catalytic conversion of ethanol and methanol to an isobutanol-containing reaction product using a thermally decomposed hydrotalcite/metalDU PONT·Filed 2008·Granted Jun 29, 2010·13 cites·13 claims
- 2493US7700811B2Catalytic conversion of ethanol to a 1-butanol-containing reaction product using a thermally decomposed hydrotalcite/metal carbonateE I DU PONT DE NAMOURS AND COM·Filed 2008·Granted Apr 20, 2010·15 cites·8 claims
- 2593US7625941B2Ionic liquidsDU PONT·Filed 2006·Granted Dec 1, 2009·12 cites·4 claims
- 2693US7547793B2Method for making insect repellent compositionDU PONT·Filed 2006·Granted Jun 16, 2009·11 cites·15 claims
- 2793US6916842B2Production of 5-methyl-n-(methyl aryl)-2-pyrrolidone, 5-methyl-n-(methyl cycloalkyl)-2-pyrrolidone and 5-methyl-n-alkyl-2-pyrrolidone by reductive amination of levulinic acid esters with cyano compoundsDU PONT·Filed 2003·Granted Jul 12, 2005·24 cites·17 claims
- 2893US6696388B2Gel catalysts and process for preparing thereofDU PONT·Filed 2001·Granted Feb 24, 2004·28 cites·8 claims
- 2993US6617464B2Production of 5-methylbutyrolactone from levulinic acidDU PONT·Filed 2002·Granted Sep 9, 2003·34 cites·15 claims
- 3092US8546627B2Renewable compositionsGRUBER PATRICK R·Filed 2012·Granted Oct 1, 2013·11 cites·21 claims
- 3192US7700812B2Catalytic conversion of ethanol to a 1-butanol-containing reaction product using a thermally decomposed hydrotalcite containing the anion of ethylenediaminetetraacetic acidDU PONT·Filed 2008·Granted Apr 20, 2010·13 cites·12 claims
- 3292US7314962B2Alkylation of aromatic compoundsDU PONT·Filed 2005·Granted Jan 1, 2008·13 cites·5 claims
- 3392US7019155B2Hydrogenation of tetrahydroxybutane to tetrahydrofuranINVISTA NORTH AMERICA SARL·Filed 2002·Granted Mar 28, 2006·30 cites·25 claims
- 3492US6232474B1Process for the preparation of α-methylenelactones and α-substituted hydrocarbylidene lactonesDU PONT·Filed 2000·Granted May 15, 2001·32 cites·43 claims
- 3591US9688652B2Hydrogenation of catmint oilDU PONT·Filed 2015·Granted Jun 27, 2017·4 cites·6 claims
- 3691US8575299B1Processes for preparing diacids, dialdehydes and polymersDU PONT·Filed 2013·Granted Nov 5, 2013·4 cites·6 claims
- 3791US8552210B2Hydrogenation of catmint oilJACKSON SCOTT CHRISTOPHER·Filed 2007·Granted Oct 8, 2013·9 cites·17 claims
- 3891US8314260B2Hydroxymethylfurfural ethers and esters prepared in ionic liquidsGRUTER GERARDUS JOHANNES MARIA·Filed 2008·Granted Nov 20, 2012·17 cites·14 claims
- 3991US6818593B2Production of 5-Methyl-N-aryl-2-pyrrolidone and 5-methyl-N-alkyl-2-pyrrolidone by reductive amination of levulinic acid with nitro compoundsDU PONT·Filed 2003·Granted Nov 16, 2004·23 cites·17 claims
- 4091US6313318B1Process for the preparation of α-methylene lactonesDU PONT·Filed 2000·Granted Nov 6, 2001·29 cites·27 claims
- 4191US5043491AMultistep synthesis of hexafluoropropyleneDU PONT·Filed 1989·Granted Aug 27, 1991·34 cites·5 claims
- 4290US9521844B2Solvent addition and removal in the hydrogenation of catmint oilEI DU PONT DE NEMOURS AND COMPANY·Filed 2013·Granted Dec 20, 2016·5 cites·19 claims
- 4390US9260403B2Methods for preparing 2,5-furandicarboxylic acidYOSHIKUNI YASUO·Filed 2014·Granted Feb 16, 2016·16 cites·36 claims
- 4490US8507718B2Ketocarboxylic acids, methods of manufacture and uses thereofMULLEN BRIAN D·Filed 2011·Granted Aug 13, 2013·6 cites·35 claims
- 4590US7956203B2Oxidation of 5-(hydroxymethyl) furfural to 2,5-diformylfuran and subsequent decarbonylation to unsubstituted furanDU PONT·Filed 2001·Granted Jun 7, 2011·14 cites·14 claims
- 4690US6900337B2Production of 5-methyl-1-hydrocarbyl-2-pyrrolidone by reductive amination of levulinic acidDU PONT·Filed 2003·Granted May 31, 2005·23 cites·38 claims
- 4790US5461177AFluorocarbon purification processDU PONT·Filed 1994·Granted Oct 24, 1995·33 cites·7 claims
- 4890US5185482AManufacture of 1,1,1,2-tetrafluoroethaneDU PONT·Filed 1992·Granted Feb 9, 1993·30 cites·24 claims
- 4989US8329229B2Steam distillation of catmint plantsGONZALEZ YAMAIRA·Filed 2007·Granted Dec 11, 2012·18 cites·18 claims
- 5089US8193375B2Processes for the production of hydrogenated productsFRUCHEY OLAN S·Filed 2011·Granted Jun 5, 2012·5 cites·10 claims
Showing the top 50 of 214 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →