Patents by Inventor Eugenia Costa Hann

Eugenia Costa Hann 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).

  • Patent number: 8486380
    Abstract: Disclosed herein are multi-component formulations for enzymatically producing aqueous solutions of peroxycarboxylic acids suitable for use in, e.g., disinfectant and/or bleaching applications. The multi-component peroxycarboxylic acid formulations comprise at least one carbohydrate esterase family 7 enzyme having perhydrolytic activity.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: July 16, 2013
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert Dicosimo, Arie Ben-Bassat, William R. Cahill, David George Dipietro, Eugenia Costa Hann, Mark S. Payne, Richard Alan Reynolds, Raymond Richard Zolandz
  • Patent number: 8389575
    Abstract: A process is provided for producing target concentrations of peroxycarboxylic acids from carboxylic acid esters. More specifically, carboxylic acid esters are reacted with an inorganic peroxide, such as hydrogen peroxide, in the presence of an enzyme catalyst having perhydrolysis activity under conditions where control of reaction pH by selection of buffer concentration and concentration of perhydrolase and reactants produces a targeted concentration of peroxycarboxylic acids. The present perhydrolase catalysts are classified as members of the carbohydrate esterase family 7 (CE-7) based on the conserved structural features. Further, disinfectant formulations comprising the peracids produced by the processes described herein are provided, as are corresponding methods of use.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: March 5, 2013
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, Mark Scott Payne, Eugenia Costa Hann
  • Publication number: 20130004479
    Abstract: Disclosed herein are multi-component formulations for enzymatically producing aqueous solutions of peroxycarboxylic acids suitable for use in, e.g., disinfectant and/or bleaching applications. The multi-component peroxycarboxylic acid formulations comprise at least one carbohydrate esterase family 7 enzyme having perhydrolytic activity.
    Type: Application
    Filed: September 11, 2012
    Publication date: January 3, 2013
    Inventors: Robert Dicosimo, Arie Ben-Bassat, William R. Cahill, David George Dipietro, Eugenia Costa Hann, Mark S. Payne, Richard Alan Reynolds, Raymond Richard Zolandz
  • Patent number: 8337905
    Abstract: Disclosed herein are multi-component peroxycarboxylic acid generation systems for enzymatically producing aqueous formulations of peroxycarboxylic acids suitable for use in, e.g., disinfectant and/or bleaching applications. The multi-component peroxycarboxylic acid generation systems comprise at least one carbohydrate esterase family 7 enzyme having perhydrolytic activity.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: December 25, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert Dicosimo, Arie Ben-Bassat, William R. Cahill, David George Dipietro, Eugenia Costa Hann, Mark S. Payne, Richard Alan Reynolds, Raymond Richard Zolandz
  • Patent number: 8304218
    Abstract: Disclosed herein are two-component enzymatic peracid generation systems and methods of using such systems wherein the first component comprises a formulation of at least one enzyme catalyst having perhydrolysis activity, a carboxylic acid ester substrate, and a cosolvent and wherein the second component comprises a source of peroxygen in water. The two components are combined to produce an aqueous peracid formulation useful as, e.g., a disinfecting or bleaching agent. Specifically, organic cosolvents are used to control the viscosity of a substrate-containing component and to enhance the solubility of the substrate in an aqueous reaction formulation without causing substantial loss of perhydrolytic activity of the enzyme catalyst.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: November 6, 2012
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Robert Dicosimo, William R. Cahill, David George Dipietro, Eugenia Costa Hann, Richard Alan Reynolds
  • Patent number: 8293221
    Abstract: Disclosed herein are multi-component formulations for enzymatically producing aqueous solutions of peroxycarboxylic acids suitable for use in, e.g., disinfectant and/or bleaching applications. The multi-component peroxycarboxylic acid formulations comprise at least one carbohydrate esterase family 7 enzyme having perhydrolytic activity.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: October 23, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert Dicosimo, Arie Ben-Bassat, William R. Cahill, David George Dipietro, Eugenia Costa Hann, Mark S. Payne, Richard Alan Reynolds, Raymond Richard Zolandz
  • Publication number: 20120122979
    Abstract: A process is provided for producing target concentrations of peroxycarboxylic acids from carboxylic acid esters. More specifically, carboxylic acid esters are reacted with an inorganic peroxide, such as hydrogen peroxide, in the presence of an enzyme catalyst having perhydrolysis activity under conditions where control of reaction pH by selection of buffer concentration and concentration of perhydrolase and reactants produces a targeted concentration of peroxycarboxylic acids. The present perhydrolase catalysts are classified as members of the carbohydrate esterase family 7 (CE-7) based on the conserved structural features. Further, disinfectant formulations comprising the peracids produced by the processes described herein are provided, as are corresponding methods of use.
    Type: Application
    Filed: January 20, 2012
    Publication date: May 17, 2012
    Inventors: Robert DiCosimo, Mark Scott Payne, Eugenia Costa Hann
  • Patent number: 8163801
    Abstract: A process is provided to produce a concentrated aqueous peracid solution in situ using at least one enzyme having perhydrolase activity in the presence of hydrogen peroxide (at a concentration of at least 500 mM) under neutral to acidic reaction conditions from suitable carboxylic acid esters (including glycerides) and/or amides substrates. The concentrated peracid solution produced is sufficient for use in a variety of disinfection and/or bleaching applications.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: April 24, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, Mark Scott Payne, Eugenia Costa Hann, Vincent Brian Croud, John Edward Gavagan, Lorraine Winona Wagner
  • Publication number: 20120094342
    Abstract: Disclosed herein are two-component enzymatic peracid generation systems and methods of using such systems wherein the first component comprises a formulation of at least one enzyme catalyst having perhydrolysis activity, a carboxylic acid ester substrate, and a cosolvent and wherein the second component comprises a source of peroxygen in water. The two components are combined to produce an aqueous peracid formulation useful as, e.g., a disinfecting or bleaching agent. Specifically, organic cosolvents are used to control the viscosity of a substrate-containing component and to enhance the solubility of the substrate in an aqueous reaction formulation without causing substantial loss of perhydrolytic activity of the enzyme catalyst.
    Type: Application
    Filed: December 19, 2011
    Publication date: April 19, 2012
    Inventors: Robert Dicosimo, William R. Cahill, David George Dipietro, Eugenia Costa Hann, Richard Alan Reynolds
  • Patent number: 8129153
    Abstract: A process is provided for producing target concentrations of peroxycarboxylic acids from carboxylic acid esters. More specifically, carboxylic acid esters are reacted with an inorganic peroxide, such as hydrogen peroxide, in the presence of an enzyme catalyst having perhydrolysis activity under conditions where control of reaction pH by selection of buffer concentration and concentration of perhydrolase and reactants produces a targeted concentration of peroxycarboxylic acids. The present perhydrolase catalysts are classified as members of the carbohydrate esterase family 7 (CE-7) based on the conserved structural features. Further, disinfectant formulations comprising the peracids produced by the processes described herein are provided, as are corresponding methods of use.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: March 6, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, Mark Scott Payne, Eugenia Costa Hann
  • Patent number: 8105810
    Abstract: Disclosed herein are two-component enzymatic peracid generation systems and methods of using such systems wherein the first component comprises a formulation of at least one enzyme catalyst having perhydrolysis activity, a carboxylic acid ester substrate, and a cosolvent and wherein the second component comprises a source of peroxygen in water. The two components are combined to produce an aqueous peracid formulation useful as, e.g., a disinfecting or bleaching agent. Specifically, organic cosolvents are used to control the viscosity of a substrate-containing component and to enhance the solubility of the substrate in an aqueous reaction formulation without causing substantial loss of perhydrolytic activity of the enzyme catalyst.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: January 31, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, William R. Cahill, David George DiPietro, Eugenia Costa Hann, Richard Alan Reynolds
  • Patent number: 8063008
    Abstract: A process is provided to produce a concentrated aqueous peracid solution in situ using at least one enzyme having perhydrolase activity in the presence of hydrogen peroxide (at a concentration of at least 500 mM) under neutral to acidic reaction conditions from suitable carboxylic acid esters (including glycerides) and/or amides substrates. The concentrated peracid solution produced is sufficient for use in a variety of disinfection and/or bleaching applications.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: November 22, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, Mark Scott Payne, Eugenia Costa Hann, Vincent Brian Croud, John Edward Gavagan, Lorraine Winona Wagner
  • Patent number: 7780911
    Abstract: A biocidal composition is provided, said biocidal composition comprising components suitable for producing peracid in situ, wherein said components comprise one or more prion-degrading enzymes, a suitable substrate, at least one enzyme having perhydrolase activity, and a source of peroxygen.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: August 24, 2010
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, Mark Scott Payne, Eugenia Costa Hann, Vincent Brian Croud, John Edward Gavagan, Lorraine Winona Wagner
  • Publication number: 20100087528
    Abstract: Disclosed herein are two-component enzymatic peracid generation systems and methods of using such systems wherein the first component comprises a formulation of at least one enzyme catalyst having perhydrolysis activity, a carboxylic acid ester substrate, and a cosolvent and wherein the second component comprises a source of peroxygen in water. The two components are combined to produce an aqueous peracid formulation useful as, e.g., a disinfecting or bleaching agent. Specifically, organic cosolvents are used to control the viscosity of a substrate-containing component and to enhance the solubility of the substrate in an aqueous reaction formulation without causing substantial loss of perhydrolytic activity of the enzyme catalyst.
    Type: Application
    Filed: October 1, 2009
    Publication date: April 8, 2010
    Inventors: Robert DiCosimo, William R. Cahill, David George Dipietro, Eugenia Costa Hann, Richard Alan Reynolds
  • Publication number: 20100086621
    Abstract: Disclosed herein are multi-component peroxycarboxylic acid generation systems for enzymatically producing aqueous formulations of peroxycarboxylic acids suitable for use in, e.g., disinfectant and/or bleaching applications. The multi-component peroxycarboxylic acid generation systems comprise at least one carbohydrate esterase family 7 enzyme having perhydrolytic activity.
    Type: Application
    Filed: October 1, 2009
    Publication date: April 8, 2010
    Inventors: Robert DiCosimo, Arie Ben-Bassat, William R. Cahill, David George Dipietro, Eugenia Costa Hann, Mark S. Payne, Richard Alan Reynolds, Raymond Richard Zolandz
  • Publication number: 20100086510
    Abstract: Disclosed herein are multi-component formulations for enzymatically producing aqueous solutions of peroxycarboxylic acids suitable for use in, e.g., disinfectant and/or bleaching applications. The multi-component peroxycarboxylic acid formulations comprise at least one carbohydrate esterase family 7 enzyme having perhydrolytic activity.
    Type: Application
    Filed: October 1, 2009
    Publication date: April 8, 2010
    Inventors: Robert DiCosimo, Arie Ben-Bassat, William R. Cahill, David George Dipietro, Eugenia Costa Hann, Marks S. Payne, Richard Alan Reynolds, Raymond Richard Zolandz
  • Publication number: 20100048448
    Abstract: A process is provided for producing target concentrations of peroxycarboxylic acids from carboxylic acid esters. More specifically, carboxylic acid esters are reacted with an inorganic peroxide, such as hydrogen peroxide, in the presence of an enzyme catalyst having perhydrolysis activity under conditions where control of reaction pH by selection of buffer concentration and concentration of perhydrolase and reactants produces a targeted concentration of peroxycarboxylic acids. The present perhydrolase catalysts are classified as members of the carbohydrate esterase family 7 (CE-7) based on the conserved structural features. Further, disinfectant formulations comprising the peracids produced by the processes described herein are provided, as are corresponding methods of use.
    Type: Application
    Filed: August 11, 2009
    Publication date: February 25, 2010
    Inventors: Robert DiCosimo, Mark Scott Payne, Eugenia Costa Hann
  • Publication number: 20100016429
    Abstract: A process is provided to produce a concentrated aqueous peracid solution in situ using at least one enzyme having perhydrolase activity in the presence of hydrogen peroxide (at a concentration of at least 500 mM) under neutral to acidic reaction conditions from suitable carboxylic acid esters (including glycerides) and/or amides substrates. The concentrated peracid solution produced is sufficient for use in a variety of disinfection and/or bleaching applications.
    Type: Application
    Filed: September 23, 2009
    Publication date: January 21, 2010
    Inventors: Robert DiCosimo, Mark S. Payne, Vincent Brian Croud, John E. Gavagan, Lorraine W. Wagner, Eugenia Costa Hann
  • Patent number: 7612030
    Abstract: A process is provided to produce a concentrated aqueous peracid solution in situ using at least one enzyme having perhydrolase activity in the presence of hydrogen peroxide (at a concentration of at least 500 mM) under neutral to acidic reaction conditions from suitable carboxylic acid esters (including glycerides) and/or amides substrates. The concentrated peracid solution produced is sufficient for use in a variety of disinfection and/or bleaching applications.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: November 3, 2009
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, Mark S. Payne, Vincent Brian Croud, John E. Gavagan, Lorraine W. Wagner, Eugenia Costa Hann
  • Publication number: 20090247631
    Abstract: A process is provided to produce a concentrated aqueous peracid solution in situ using at least one enzyme having perhydrolase activity in the presence of hydrogen peroxide (at a concentration of at least 500 mM) under neutral to acidic reaction conditions from suitable carboxylic acid esters (including glycerides) and/or amides substrates. The concentrated peracid solution produced is sufficient for use in a variety of disinfection and/or bleaching applications.
    Type: Application
    Filed: May 22, 2009
    Publication date: October 1, 2009
    Inventors: Robert DiCosimo, Mark S. Payne, Vincent Brian Croud, John E. Gavagan, Lorraine W. Wagner, Eugenia Costa Hann