Patents by Inventor Leo Ernest Manzer

Leo Ernest Manzer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Methods for purifying alkane liquids
    Publication number: 20080064907
    Abstract: Methods for purifying liquid alkanes are provided. The methods produce alkanes having low absorbance, particularly at 193 nm. The alkane liquids are useful as immersion liquids in photomicrolithography employed for production of electronic circuits.
    Type: Application
    Filed: September 13, 2006
    Publication date: March 13, 2008
    Inventors: Robert Clayton Wheland, Leo Ernest Manzer, Sheng Peng
  • Process for making isooctenes from aqueous 1-butanol
    Publication number: 20080015397
    Abstract: The present invention relates to a catalytic process for making isooctenes using a reactant comprising 1-butanol and water. The isooctenes so produced are useful for the production of fuel additives.
    Type: Application
    Filed: June 13, 2007
    Publication date: January 17, 2008
    Inventors: Michael D'Amore, Leo Ernest Manzer, Edward Miller, Jeffrey Knapp
  • Alkylation of aromatic compounds
    Patent number: 7314962
    Abstract: The present invention relates to the synthesis of alkylated aromatic compounds using ionic liquids as the solvent. Alkylated aromatic compounds are synthesized by reacting an aromatic compound with a monoolefin in the presence of an acid catalyst.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: January 1, 2008
    Assignee: E. I. du Pont de Nemours & Co.
    Inventors: Mark Andrew Harmer, Christopher P. Junk, Leo Ernest Manzer
  • Liquid phase synthesis of methylene lactones using novel grafted catalyst
    Patent number: 7205416
    Abstract: Process for converting certain lactones to their alpha-methylene substituted forms that exhibits high conversion and selectivity.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: April 17, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Keith W. Hutchenson, Kostantinos Kourtakis, Leo Ernest Manzer
  • Liquid phase synthesis of methylene lactones using novel catalyst
    Patent number: 7199254
    Abstract: Process for converting certain lactones to their alpha-methylene derivatives in the liquid phase with both high conversion and selectivity using easily recoverable novel heterogeneous catalysts.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: April 3, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Keith W. Hutchenson, Kostantinos Kourtakis, Leo Ernest Manzer
  • Supercritical fluid phase synthesis of methylene lactones using novel grafted catalyst
    Patent number: 7166727
    Abstract: Process for converting certain lactones to their alpha-methylene substituted forms in a supercritical or near-critical fluid phase reaction using a novel grafted catalyst that not only exhibits high initial activity (conversion), but also maintains a high level of activity with time on stream.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: January 23, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Keith W. Hutchenson, Kostantinos Kourtakis, Leo Ernest Manzer
  • Supercritical fluid phase synthesis of methylene lactones using novel catalyst field of invention
    Patent number: 7164032
    Abstract: Process for converting certain lactones to their alpha-methylene substituted forms that not only exhibits high initial activity (conversion), but also provides high reactor productivity (mass of product per mass of catalyst per unit of time) and sustained maintenance of a high level of activity and productivity with time on stream.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: January 16, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Keith W. Hutchenson, Kostantinos Kourtakis, Leo Ernest Manzer
  • Gas phase synthesis of methylene lactones using novel grafted catalyst
    Patent number: 7161014
    Abstract: Process for converting certain lactones to their alpha-methylene substituted forms that not only exhibits high initial activity (conversion), but also maintains a high level of activity with time on stream.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: January 9, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Keith W. Hutchenson, Kostantinos Kourtakis, Leo Ernest Manzer
  • Ionic liquids
    Patent number: 7157588
    Abstract: The present invention relates to compositions of matter that are useful as ionic liquids. The compositions of the invention are based on an N-substituted pyrrolidinone, said pyrrolidinone having a pendant ammonium cation that is separated from the pyrrolidone ring by a variable length alkyl spacer.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: January 2, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mark Andrew Harmer, Christopher P. Junk, Leo Ernest Manzer
  • Preparation of levulinic acid esters and formic acid esters from biomass and olefins
    Patent number: 7153996
    Abstract: This invention relates to a process for producing a mixture of levulinic acid esters and formic acid esters from biomass and olefins, and the composition prepared therefrom. This invention also relates to usage of the mixture of these esters as fuel and as fuel additives for gasoline fuel, diesel fuel, and biofuel.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: December 26, 2006
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Paul Joseph Fagan, Leo Ernest Manzer
  • Supercritical fluid phase synthesis of methylene lactones using oxynitride catalyst
    Patent number: 7153981
    Abstract: Process for converting certain lactones to their alpha-methylene substituted forms in a supercritical or near-critical fluid phase reaction using an oxynitride catalyst or a composite oxynitride catalyst incorporating lithium, sodium, potassium, rubidium, cesium, magnesium, calcium, strontium, or barium or combinations thereof.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: December 26, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Keith W. Hutchenson, Kostantinos Kourtakis, Leo Ernest Manzer
  • Gas phase synthesis of methylene lactones using oxynitride catalyst
    Patent number: 7151185
    Abstract: Process for converting certain lactones to their alpha-methylene substituted forms using an oxynitride catalyst or a composite oxynitride catalyst incorporating lithium, sodium, potassium, rubidium, cesium, magnesium, calcium, strontium, or barium or combinations thereof.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: December 19, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Keith W. Hutchenson, Kostantinos Kourtakis, Leo Ernest Manzer
  • Liquid phase synthesis of methylene lactones using oxnitride catalyst
    Patent number: 7141682
    Abstract: Process for converting certain lactones to their alpha-methylene derivatives in the liquid phase using oxynitride catalysts or composite catalysts incorporating dithium, sodium, potassium, rubidium, cesium, magnesium, calcium, strontium, or barium or combinations thereof.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: November 28, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Keith W. Hutchenson, Kostantinos Kourtakis, Leo Ernest Manzer
  • 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
    Patent number: 7129362
    Abstract: This invention relates to a process for producing 5-methyl-N-aryl-2-pyrrolidone, 5-methyl-N-alkyl-2-pyrrolidone, and 5-methyl-N-cycloalkyl-2-pyrrolidone by reductive amination of levulinic acid esters with aryl or alkyl amines utilizing a metal catalyst, which is optionally supported.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: October 31, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Leo Ernest Manzer
  • Production of dihydronepetalactone by hydrogenation of nepetalactone
    Patent number: 7067677
    Abstract: This invention relates to a process for hydrogenating nepetalactone, utilizing a metal catalyst that is optionally supported, to yield dihydronepetalactone. A suite of supported catalytic metals lead to rapid hydrogenation and high selectivity for dihydronepetalactone.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: June 27, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Leo Ernest Manzer
  • Process for converting ?-angelica lactone to 5-methyl-N-alkyl-2-pyrrolidone using alkyl amines
    Patent number: 7030249
    Abstract: This invention relates to a process for producing 5-methyl-N-alkyl-2-pyrrolidone by a) reacting ?-angelica lactone with alkyl amines and b) hydrogenating the products of step (a) in the presence of a metal catalyst, which is optionally supported.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: April 18, 2006
    Assignee: E. I. uPont de Nemours and Company
    Inventor: Leo Ernest Manzer
  • 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
    Patent number: 7030074
    Abstract: This invention relates to a process for producing 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 aryl or alkyl cyano compounds utilizing a metal catalyst, which is optionally supported.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: April 18, 2006
    Assignee: E I. duPont de Nemours and Company
    Inventor: Leo Ernest Manzer
  • 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
    Patent number: 7025819
    Abstract: This invention relates to a process for producing 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 aryl or alkyl cyano compounds utilizing a metal catalyst, which is optionally supported.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: April 11, 2006
    Assignee: E. I. duPont de Nemours and Company
    Inventor: Leo Ernest Manzer
  • Hydrogenation of tetrahydroxybutane to tetrahydrofuran
    Patent number: 7019155
    Abstract: Disclosed is a method for the hydrogenation of tetrahydroxybutane in the presence of supported rhenium catalysts and an acid to form tetrahydrofuran and its precursors.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: March 28, 2006
    Assignee: Invista North America S.A.R.L.
    Inventor: Leo Ernest Manzer
  • 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
    Patent number: 7014697
    Abstract: This invention relates to a process for producing 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 aryl or alkyl cyano compounds utilizing a metal catalyst, which is optionally supported.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: March 21, 2006
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Leo Ernest Manzer