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).

  • Hydrogenation of catmint oil
    Patent number: 10442785
    Abstract: Disclosed are methods for treating catmint oil. The treated catmint oil can be used for the production of hydrogenated catmint oil, which is enriched in the insect repellent, dihydronepetalactone.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: October 15, 2019
    Assignee: DUPONT US HOLDING, LLC
    Inventors: Scott Christopher Jackson, Leo Ernest Manzer, Henry Max Schleinitz, Mark A Scialdone, Keith W Hutchenson
  • HYDROGENATION OF CATMINT OIL
    Publication number: 20170260156
    Abstract: Disclosed are methods for treating catmint oil. The treated catmint oil can be used for the production of hydrogenated catmint oil, which is enriched in the insect repellent, dihydronepetalactone.
    Type: Application
    Filed: May 23, 2017
    Publication date: September 14, 2017
    Inventors: SCOTT CHRISTOPHER JACKSON, LEO ERNEST MANZER, HENRY MAX SCHLEINITZ, MARK A. SCIALDONE, KEITH W. HUTCHENSON
  • Hydrogenation of catmint oil
    Patent number: 9688652
    Abstract: Disclosed are methods for treating catmint oil. The process allows the separation of sulfur-containing compounds from the catmint oil. The treated catmint oil can be used for the production of hydrogenated catmint oil, which is enriched in the insect repellent, dihydronepetalactone.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: June 27, 2017
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Scott Christopher Jackson, Leo Ernest Manzer, Henry Max Schleinitz, Mark A Scialdone, Keith W Hutchenson
  • Solvent addition and removal in the hydrogenation of catmint oil
    Patent number: 9521844
    Abstract: Disclosed are methods for treating catmint oil. The treated catmint oil can be used for the production of hydrogenated catmint oil, which is enriched in the insect repellent, dihydronepetalactone, and from which formulated products may be prepared.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: December 20, 2016
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: John Charles Fisher, Keith W Hutchenson, Scott Christopher Jackson, Leo Ernest Manzer, Mark A Scialdone, Mayis Seapan
  • Process for Making Isooctenes from Aqueous Isobutanol
    Publication number: 20160311730
    Abstract: The present invention relates to a catalytic process for making isooctenes using a reactant comprising isobutanol and water. The isooctenes so produced are useful for the production of fuel additives.
    Type: Application
    Filed: June 30, 2016
    Publication date: October 27, 2016
    Inventors: MICHAEL B. D'AMORE, LEO ERNEST MANZER, EDWARD S. MILLER, JR., JEFFREY P. KNAPP
  • Process for making isooctenes from aqueous isobutanol
    Patent number: 9410099
    Abstract: The present invention relates to a catalytic process for making isooctenes using a reactant comprising isobutanol and water. The isooctenes so produced are useful for the production of fuel additives.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: August 9, 2016
    Assignee: Butamax Advanced Biofuels LLC
    Inventors: Michael B. D'Amore, Leo Ernest Manzer, Edward S. Miller, Jr., Jeffrey P. Knapp
  • Process for making isooctenes from aqueous isobutanol
    Patent number: 9410098
    Abstract: The present invention relates to a catalytic process for making isooctenes using a reactant comprising isobutanol and water. The isooctenes so produced are useful for the production of fuel additives.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: August 9, 2016
    Assignee: Bitamax Advanced Biofuels LLC
    Inventors: Michael B D'Amore, Leo Ernest Manzer, Edward S Miller, Jr., Jeffrey P Knapp
  • Process for making isooctenes from aqueous isobutanol
    Publication number: 20150291900
    Abstract: The present invention relates to a catalytic process for making isooctenes using a reactant comprising isobutanol and water. The isooctenes so produced are useful for the production of fuel additives.
    Type: Application
    Filed: June 24, 2015
    Publication date: October 15, 2015
    Applicant: Butamax Advanced Biofuels LLC
    Inventors: Michael B. D'AMORE, Leo Ernest Manzer, Edward S. Miller, JR., Jeffrey P. Knapp
  • HYDROGENATION OF CATMINT OIL
    Publication number: 20150266846
    Abstract: Disclosed are methods for treating catmint oil. The process allows the separation of sulfur-containing compounds from the catmint oil. The treated catmint oil can be used for the production of hydrogenated catmint oil, which is enriched in the insect repellent, dihydronepetalactone.
    Type: Application
    Filed: June 5, 2015
    Publication date: September 24, 2015
    Inventors: SCOTT CHRISTOPHER JACKSON, Leo Ernest Manzer, Henry Max Schleinitz, Mark A. Scialdone, Keith W. Hutchenson
  • HYDROGENATED CATMINT OIL
    Publication number: 20150164073
    Abstract: Disclosed is a hydrogenated catmint oil, which is enriched in the insect repellant dihydronepetalactone, and from which formulated products can be prepared.
    Type: Application
    Filed: February 26, 2015
    Publication date: June 18, 2015
    Inventors: JOHN CHARLES FISHER, Keith W. Hutchenson, Scott Christopher Jackson, Leo Ernest Manzer, Mark A. Scialdone, Mayis Seapan
  • HYDROGENATION OF CATMINT OIL
    Publication number: 20150152078
    Abstract: Disclosed are methods for treating catmint oil. The treated catmint oil can be used for the production of hydrogenated catmint oil, which is enriched in the insect repellent, dihydronepetalactone.
    Type: Application
    Filed: February 4, 2015
    Publication date: June 4, 2015
    Inventors: SCOTT CHRISTOPHER JACKSON, LEO ERNEST MANZER, HENRY MAX SCHLEINITZ, MARK A. SCIALDONE, KEITH W. HUTCHENSON
  • SOLVENT ADDITION AND REMOVAL IN THE HYDROGENATION OF CATMINT OIL
    Publication number: 20150087698
    Abstract: Disclosed are methods for treating catmint oil. The treated catmint oil can be used for the production of hydrogenated catmint oil, which is enriched in the insect repellent, dihydronepetalactone, and from which formulated products may be prepared.
    Type: Application
    Filed: September 24, 2013
    Publication date: March 26, 2015
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: JOHN CHARLES FISHER, KEITH W. HUTCHENSON, SCOTT CHRISTOPHER JACKSON, LEO ERNEST MANZER, MARK A. SCIALDONE, MAYIS SEAPAN
  • Process for making isooctenes from dry 1-butanol
    Patent number: 8975047
    Abstract: The present invention relates to a process for making isooctenes using dry 1-butanol derived from fermentation broth. The isooctenes so produced are useful for the production of fuel additives.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: March 10, 2015
    Assignee: E I du Pont de Nemours and Company
    Inventors: Michael B. D'Amore, Leo Ernest Manzer, Edward S. Miller, Jr., Jeffrey P. Knapp
  • Hydrogenation of catmint oil
    Patent number: 8952182
    Abstract: Disclosed are methods for treating catmint oil. The treated catmint oil can be used for the production of hydrogenated catmint oil, which is enriched in the insect repellent, dihydronepetalactone.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: February 10, 2015
    Assignee: E I du Pont de Nemours and Company
    Inventors: Scott Christopher Jackson, Leo Ernest Manzer, Henry Max Schleinitz, Mark A Scialdone, Keith W Hutchenson
  • Processes for preparing diacids, dialdehydes and polymers
    Patent number: 8785667
    Abstract: Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and to the decarbonylation of the dialdehyde to furan.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: July 22, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Vladimir Grushin, Leo Ernest Manzer, Walter Partenheimer
  • Production of dihydronepetalactone
    Patent number: 8765975
    Abstract: This invention provides a process for producing dihydronepetalactone using mixtures comprising both trans-cis nepetalactone and cis-trans nepetalactone. A reaction mixture comprising trans-cis nepetalactone and cis-trans nepetalactone is first contacted with hydrogen in the presence of at least one hydrogenation catalyst under conditions that optimise the preferential conversion of trans-cis nepetalactone to dihydronepetalactone. Cis-trans nepetalactone is subsequently converted to dihydronepetalactone by contact with hydrogen in the presence of at least one hydrogenation catalyst.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: July 1, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Keith W. Hutchenson, Scott Christopher Jackson, Leo Ernest Manzer, Mark A. Scialdone, Mayis Seapan
  • Processes for preparing diacids, dialdehydes and polymers
    Patent number: 8748638
    Abstract: Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and to the decarbonylation of the dialdehyde to furan.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: June 10, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Vladimir Grushin, Leo Ernest Manzer, Walter Partenheimer
  • Processes for preparing diacids, dialdehydes and polymers
    Patent number: 8748637
    Abstract: Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and to the decarbonylation of the dialdehyde to furan.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: June 10, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Vladimir Grushin, Leo Ernest Manzer, Walter Partenheimer
  • Method for making insect repellent composition
    Patent number: 8633325
    Abstract: Dihydronepetalactone, a minor natural constituent of the essential oil of catmints (Nepeta spp.) such as Nepeta cataria, has been identified as an effective insect repellent compound. Synthesis of dihydronepetalactone may be achieved by hydrogenation of nepetalactone, the major constituent of catmint essential oils. This compound, which also has fragrance properties, may be used commercially for its insect repellent properties, and methods for making an composition thereof are disclosed.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: January 21, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: David L. Hallahan, Leo Ernest Manzer
  • HYDROGENATION OF CATMINT OIL
    Publication number: 20140018551
    Abstract: Disclosed are methods for treating catmint oil. The treated catmint oil can be used for the production of hydrogenated catmint oil, which is enriched in the insect repellent, dihydronepetalactone.
    Type: Application
    Filed: September 24, 2013
    Publication date: January 16, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: SCOTT CHRISTOPHER JACKSON, LEO ERNEST MANZER, HENRY MAX SCHLEINITZ, MARK A. SCIALDONE, KEITH W. HUTCHENSON