Inventor

Leo Ernest Manzer

Inventor

Wilmington, DE, US

Overview

1977–2019

Patent span

Chemistry

Primary field (CPC C)

Patents· 158 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C07Cprimary

C07CAcyclic or carbocyclic compounds25%

C07DHeterocyclic compounds22%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry8%

A01NPreservation of bodies of humans or animals or plants or parts thereof6%

Y02PClimate change mitigation technologies in the production or processing of goods6%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds5%

C10LFuels not otherwise provided for4%

C12PFermentation or enzyme-using processes to synthesise a desired chemical compound or composition or to separate optical isomers from a racemic mixture3%

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations3%

C01BNon-metallic elements2%

PatentTitleYear

10,442,785Hydrogenation of catmint oil2019 10,351,487Methods for conversion of ethanol to functionalized lower hydrocarbons and downstream hydrocarbons2019 9,688,652'Hydrogenation of catmint oil'2017 9,521,844'Solvent addition and removal in the hydrogenation of catmint oil'2016 9,464,030'Processes for producing butanediol (BDO), diaminobutane (DAB), succinic dinitrile (SDN) and succinamide (DAM)'2016 9,410,099'Process for making isooctenes from aqueous isobutanol'2016 9,410,098'Process for making isooctenes from aqueous isobutanol'2016 9,260,403'Methods for preparing 2,5-furandicarboxylic acid'2016 9,221,741'Ketocarboxylic acids, ketocarboxylic esters, methods of manufacture and uses thereof'2015 9,115,080'Processes for producing caprolactam and derivatives thereof from fermentation broths containing diammonium adipate or monoammonium adipate'2015 8,975,047'Process for making isooctenes from dry 1-butanol'2015 8,952,182'Hydrogenation of catmint oil'2015 8,937,147'Processes for producing diaminobutane (DAB), succinic dinitrile (SDN) and succinamide (DAM)'2015 8,895,779'Processes for producing monoammonium adipate and conversion of monoammonium adipate to adipic acid'2014 8,785,667'Processes for preparing diacids, dialdehydes and polymers'2014 8,765,975'Production of dihydronepetalactone'2014 8,748,637'Processes for preparing diacids, dialdehydes and polymers'2014 8,748,638'Processes for preparing diacids, dialdehydes and polymers'2014 8,742,060'Processes for producing hexamethylenediamine (HMD), adiponitrile (ADN), adipamide (ADM) and derivatives thereof'2014 8,703,900'Processes for producing caprolactam and derivatives thereof from fermentation broths containing diammonium adipate, monoammonium adipate and/or adipic acid'2014 8,633,325'Method for making insect repellent composition'2014 8,575,299'Processes for preparing diacids, dialdehydes and polymers'2013 8,558,015'Solvent addition and removal in the hydrogenation of catmint oil'2013 8,552,210'Hydrogenation of catmint oil'2013 8,546,627'Renewable compositions'2013 8,524,923'Processes for preparing diacids, dialdehydes and polymers'2013 8,507,718'Ketocarboxylic acids, methods of manufacture and uses thereof'2013 8,487,149'Renewable compositions'2013 8,466,300'Processes for the production of hydrogenated products'2013 8,450,543'Integrated methods of preparing renewable chemicals'2013 8,410,291'Processes for the production of hydrogenated products'2013 8,399,687'Processes for the production of hydrogenated products'2013 8,378,160'Renewable compositions'2013 8,329,229'Steam distillation of catmint plants'2012 8,314,260'Hydroxymethylfurfural ethers and esters prepared in ionic liquids'2012 8,293,217'Hydrogenation of caryophellene'2012 8,193,375'Processes for the production of hydrogenated products'2012 8,193,402'Renewable compositions'2012 8,129,550'Oxidation of 5-(hydroxymethyl) furfural to 2,5 diformylfuran and subsequent decarbonylation to unsubstituted furan'2012 8,084,626'Processes for the production of hydrogenated products'2011 7,956,203'Oxidation of 5-(hydroxymethyl) furfural to 2,5-diformylfuran and subsequent decarbonylation to unsubstituted furan'2011 7,754,928'Method of making 2-butanol'2010 7,745,672'Catalytic conversion of ethanol and methanol to an isobutanol-containing reaction product using a thermally decomposed hydrotalcite/metal'2010 7,705,192'Catalytic conversion of ethanol and methanol to an isobutanol-containing reaction product using a thermally decomposed hydrotalcite catalyst'2010 7,700,811'Catalytic conversion of ethanol to a 1-butanol-containing reaction product using a thermally decomposed hydrotalcite/metal carbonate'2010 7,700,810'Catalytic conversion of ethanol to a 1-butanol-containing reaction product using a thermally decomposed hydrotalcite catalyst'2010 7,700,813'Catalytic conversion of ethanol and methanol to an isobutanol-containing reaction product using a thermally decomposed hydrotalcite containing the anion of ethylenediaminetetraacetic acid'2010 7,700,812'Catalytic conversion of ethanol to a 1-butanol-containing reaction product using a thermally decomposed hydrotalcite containing the anion of ethylenediaminetetraacetic acid'2010 7,671,247'Methods for purifying alkane liquids'2010 7,625,941'Ionic liquids'2009 7,612,216'Production of N-(methyl aryl)-2-lactam, N-(methyl cycloalkyl)-2-lactam and N-alkyl-2-lactam by reductive amination of lactones with aryl and alkyl cyano compounds'2009 7,547,793'Method for making insect repellent composition'2009 7,465,813'Process for making 5-methyl-N-alkyl-2-pyrrolidone from alkyl amine(s) and levulinic acid'2008 7,405,330'Preparation of polytrimethylene ether glycol and copolymers thereof'2008 7,402,711'Preparation of poly(tetramethylene) glycol'2008 7,348,442'Gas phase synthesis of methylene lactones using catalysts derived from hydrotalcite precursors'2008 7,314,962'Alkylation of aromatic compounds'2008 7,205,416'Liquid phase synthesis of methylene lactones using novel grafted catalyst'2007 7,199,254'Liquid phase synthesis of methylene lactones using novel catalyst'2007 7,166,727'Supercritical fluid phase synthesis of methylene lactones using novel grafted catalyst'2007 7,164,032'Supercritical fluid phase synthesis of methylene lactones using novel catalyst field of invention'2007 7,161,014'Gas phase synthesis of methylene lactones using novel grafted catalyst'2007 7,157,588'Ionic liquids'2007 7,153,996'Preparation of levulinic acid esters and formic acid esters from biomass and olefins'2006 7,153,981'Supercritical fluid phase synthesis of methylene lactones using oxynitride catalyst'2006 7,151,185'Gas phase synthesis of methylene lactones using oxynitride catalyst'2006 7,141,682'Liquid phase synthesis of methylene lactones using oxnitride catalyst'2006 7,129,362'Production of 5-methyl-N-aryl-2-pyrrolidone and 5-methyl-N-alkyl-2-pyrrolidone by reductive of levulinic acid esters with aryl and alkyl amines'2006 7,074,968'Continuous process for the preparation of polytrimethylene ether glycol'2006 7,071,371'Gel catalysts and methods for their use in catalytic dehydrogenation processes'2006 7,067,677'Production of dihydronepetalactone by hydrogenation of nepetalactone'2006 7,067,708'Process for the preparation of p-xylene'2006 7,030,249'Process for converting Î±-angelica lactone to 5-methyl-N-alkyl-2-pyrrolidone using alkyl amines'2006 7,030,074'Production 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 compounds'2006 7,025,819'Production 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 compounds'2006 7,019,155'Hydrogenation of tetrahydroxybutane to tetrahydrofuran'2006 7,014,697'Production 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 compounds'2006 7,002,024'Production of a N-aryl-2-lactam and N-cycloalkyl-2-lactam by reductive amination of lactones with aryl amines'2006 6,995,275'Production of N-aryl-2-lactam and N-alkyl-2-lactam by reductive amination of lactones with aryl and alkyl nitro compounds'2006 6,992,195'Production of N-aryl-2-lactam and N-cycloalkyl-2-lactam by reductive amination of lactones with arylamines'2006 6,991,744'Refrigerant compositions containing a compatibilizer'2006 6,987,192'Production of N-aryl-2-lactam and N-alkyl-2-lactam by reductive amination of lactones with aryl and alkyl nitro compounds'2006 6,984,736'Production of N-aryl-2-lactam and N-alkyl-2-lactam by reductive amination of lactones with aryl and alkyl nitro compounds'2006 6,982,339'Production of N-aryl-2-lactam and N-cycloalkyl-2-lactam by reductive amination of lactones with aryl amines'2006 6,977,291'Production of polytrimethylene ether glycol and copolymers thereof'2005 6,946,563'Production of 5-methyl-dihydro-furan-2-one from levulinic acid in supercritical media'2005 6,930,126'PRODUCTION 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 COMPOUNDS'2005 6,916,842'PRODUCTION 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 COMPOUNDS'2005 6,906,201'Production of N-(methyl aryl)-2-lactam, N-(methyl cycloalkyl)-2-lactam and N-alkyl-2-lactam by reductive amination of lactones with aryl and alkyl cyano compounds'2005 6,903,222'Production of 5-methyl-N-aryl-2-pyrrolidone and 5-methyl-N-cycloalkyl-2-pyrrolidone by reductive amination of levulinic acid with aryl amines'2005 6,900,337'Production of 5-methyl-1-hydrocarbyl-2-pyrrolidone by reductive amination of levulinic acid'2005 6,863,722'Production of 5-methyl-n-aryl-2-pyrrolidone and 5-methyl-n-alkyl-2-pyrrolidone by reductive amination of levulinic acid with nitro compounds'2005 6,855,731'Production of 5-methyl-N-aryl-2-pyrrolidone and 5-methyl-N-alkyl-2-pyrrolidone by reductive amination of levulinic acid esters with nitro compounds'2005 6,841,520'Production 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 with cyano compounds'2005 6,835,849'Synthesis of alkenoate esters from lactones and alcohols'2004 6,828,278'Production of N-aryl-2-lactam and N-cycloalkyl-2-lactam by reductive amination of lactones with arly amines'2004 6,828,277'Production of N-aryl-2-lactam and N-alkyl-2-lactam by reductive amination of lactones with aryl and alkyl nitro compounds'2004 6,818,593'Production of 5-Methyl-N-aryl-2-pyrrolidone and 5-methyl-N-alkyl-2-pyrrolidone by reductive amination of levulinic acid with nitro compounds'2004 6,797,850'Catalytic dehydrogenation processes and chromium catalysts for use therein'2004 6,762,333'Process for reducing the fluorine content of hydrofluorocarbons and hydrohalofluorocarbons'2004 6,756,501'Manufacture of 3-methyl-tetrahydrofuran from alpha-methylene-gamma-butyrolactone in a single step process'2004 6,743,819'Production of 5-methyl-N-aryl-2-pyrrolidone and 5-methyl-N-cycloalkyl-2-pyrrolidone by reductive amination of levulinic acid with aryl amines'2004 6,720,459'Continuous process for the preparation of polytrimethylene ether glycol'2004 6,706,935'Catalytic equilibration to increase the relative mole fraction of CF3CHCI, CF3CHCI2 or CF3CF2H in a composition'2004 6,696,388'Gel catalysts and process for preparing thereof'2004 6,686,310'High surface area sol-gel route prepared hydrogenation catalysts'2004 6,673,946'Manufacture of 3-methyl-tetrahydrofuran from 2-methyl-gamma-butyrolactone'2004 6,670,158'Method for producing methacrylic acid acrylic acid with a combination of enzyme catalysts'2003 6,664,402'Manufacture of 3-methyl-tetrahydrofuran from alpha-methylene-gamma-butyrolactone in a two step process'2003 6,649,776'Methylenelactone synthesis in supercritical fluids'2003 6,624,337'Process for the manufacture of fluoroolefins'2003 6,617,464'Production of 5-methylbutyrolactone from levulinic acid'2003 6,600,081'Process for the preparation of p-xylene'2003 6,593,481'Hydrogenation of 3,4-tetrahydrofurandiol to tetrahydrofuran'2003 6,582,943'Method for producing 2-hydroxyisobutyric acid and methacrylic acid from acetone cyanohydrin'2003 6,475,950'Catalytic dehydrogenation processes and chromium catalysts for use therein'2002 6,369,257'Hydroformylation of olefins using supported bis(phosphorus) ligands'2002 6,313,318'Process for the preparation of .alpha.-methylene lactones'2001 6,284,927'Hydroperoxide decomposition process'2001 6,281,396'Fluorocarbon purification process'2001 6,232,474'Process for the preparation of .alpha.-methylenelactones and .alpha.-substituted hydrocarbylidene lactones'2001 6,229,052'Hydroformylation of olefins using supported bis(phosphorus) ligands'2001 6,054,612'Phosgene manufacturing process'2000 6,054,107'Phosgene manufacturing process'2000 6,022,993'Phosgene manufacturing process'2000 5,879,652'Process for producing oxochlorides of sulfur'1999 5,763,698'Process for reducing the fluorine content of hydrofluorocarbons and hydrohalofluorocarbons'1998 5,759,508'Process for producing oxochlorides of sulfur'1998 5,523,498'Process for reducing the fluorine content of hydrofluorocarbons and hydrohalofluorocarbons'1996 5,461,177'Fluorocarbon purification process'1995 5,345,016'Manufacture of 1,1,1,2-tetrafluoroethane'1994 5,302,765'Catalytic process for producing CF.sub.3 CHClF'1994 5,286,824'Process for the preparation of halogenated 2,2-bis(trifluoromethyl)-1,3-dioxolanes'1994 5,261,948'Carbon molecular sieve for the kinetic separation of acid gases and fluorocarbons'1993 5,243,108'Aluminum fluoride catalyst compositions and use thereof in a chlorofluorination process for preparing 1,1-dichloro-1,2,2,2-tetrafluoroethane'1993 5,243,106'Processes using aluminum fluoride catalyst compositions for preparing 1,1-dichloro-1,2,2,2-tetrafluoroethane'1993 5,220,083'Synthesis of perfluoropropane'1993 5,185,482'Manufacture of 1,1,1,2-tetrafluoroethane'1993 5,177,224'Process for the preparation of halogenated 2,2-bis(trifluoromethyl)-1,3-dioxolanes'1993 5,120,883'Catalytic process for producing CCl.sub.3 CF.sub.3'1992 5,094,773'Azeotropes of HF and process for the separation of HF via azeotropic distillation'1992 5,068,472'Multistep synthesis of hexafluoropropylene'1991 5,057,634'Multistep synthesis of hexafluoropropylene'1991 5,051,537'Gas-phase fluorination'1991 5,043,491'Multistep synthesis of hexafluoropropylene'1991 5,026,930'Gas-phase fluorination process'1991 5,008,475'Gas-phase fluorination process'1991 5,008,476'Process for the preparation of 1,1,1,2-tetrafluoroethane'1991 4,944,846'Process for the separation of HF via Azeotropic distillation'1990 4,935,558'Reductive dechlorination of 1,1,1,2-tetrafluoro-2-chloroethane'1990 4,922,037'Gas-phase fluorination process'1990 4,911,792'Process for the separation of HF via phase separation and distillation'1990 4,902,838'Isomerization of saturated fluorohydrocarbons'1990 4,843,181'Process for the manufacture of 1,1,1-trifluorodichloroethane and 1,1,1,2-tetrafluorochloroethane'1989 4,766,259'Gas-phase fluorination process'1988 4,766,260'Gas-phase fluorination process'1988 4,057,565'2-Dialkylaminobenzyl and 2-dialkylaminomethylphenyl derivatives of selected transition metals'1977 4,042,610'Process for preparing hydrocarbyl and silahydrocarbyl transition metal dihydrocarbylamides'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–2019Patents assigned to DU PONT (130)· patent assignee history

1977–2019Based in Wilmington, DE, US· patent location history

2011–2016Patents assigned to MANZER LEO E (18)· patent assignee history

2011–2016Patents assigned to CLINTON NYE A (11)· patent assignee history

2011–2016Patents assigned to DUNUWILA DILUM (11)· patent assignee history

2011–2016Patents assigned to FRUCHEY OLAN S (11)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
DU PONT	130	1977–2019
MANZER LEO Eself	18	2011–2016
CLINTON NYE A	11	2011–2016
DUNUWILA DILUM	11	2011–2016
FRUCHEY OLAN S	11	2011–2016

Locations

Location	Patents	Span
Wilmington, Delaware, US	158	1977–2019