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).
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Patent number: 8486380Abstract: 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: GrantFiled: September 11, 2012Date of Patent: July 16, 2013Assignee: E. I. du Pont de Nemours and CompanyInventors: Robert Dicosimo, Arie Ben-Bassat, William R. Cahill, David George Dipietro, Eugenia Costa Hann, Mark S. Payne, Richard Alan Reynolds, Raymond Richard Zolandz
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Patent number: 8389575Abstract: 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: GrantFiled: January 20, 2012Date of Patent: March 5, 2013Assignee: E.I. du Pont de Nemours and CompanyInventors: Robert DiCosimo, Mark Scott Payne, Eugenia Costa Hann
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Publication number: 20130004479Abstract: 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: ApplicationFiled: September 11, 2012Publication date: January 3, 2013Inventors: Robert Dicosimo, Arie Ben-Bassat, William R. Cahill, David George Dipietro, Eugenia Costa Hann, Mark S. Payne, Richard Alan Reynolds, Raymond Richard Zolandz
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Patent number: 8337905Abstract: 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: GrantFiled: October 1, 2009Date of Patent: December 25, 2012Assignee: E. I. du Pont de Nemours and CompanyInventors: Robert Dicosimo, Arie Ben-Bassat, William R. Cahill, David George Dipietro, Eugenia Costa Hann, Mark S. Payne, Richard Alan Reynolds, Raymond Richard Zolandz
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Patent number: 8304218Abstract: 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: GrantFiled: December 19, 2011Date of Patent: November 6, 2012Assignee: E.I. du Pont de Nemours and CompanyInventors: Robert Dicosimo, William R. Cahill, David George Dipietro, Eugenia Costa Hann, Richard Alan Reynolds
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Patent number: 8293221Abstract: 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: GrantFiled: October 1, 2009Date of Patent: October 23, 2012Assignee: E. I. du Pont de Nemours and CompanyInventors: Robert Dicosimo, Arie Ben-Bassat, William R. Cahill, David George Dipietro, Eugenia Costa Hann, Mark S. Payne, Richard Alan Reynolds, Raymond Richard Zolandz
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Publication number: 20120122979Abstract: 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: ApplicationFiled: January 20, 2012Publication date: May 17, 2012Inventors: Robert DiCosimo, Mark Scott Payne, Eugenia Costa Hann
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Patent number: 8163801Abstract: 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: GrantFiled: September 23, 2009Date of Patent: April 24, 2012Assignee: E. I. du Pont de Nemours and CompanyInventors: Robert DiCosimo, Mark Scott Payne, Eugenia Costa Hann, Vincent Brian Croud, John Edward Gavagan, Lorraine Winona Wagner
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Publication number: 20120094342Abstract: 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: ApplicationFiled: December 19, 2011Publication date: April 19, 2012Inventors: Robert Dicosimo, William R. Cahill, David George Dipietro, Eugenia Costa Hann, Richard Alan Reynolds
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Patent number: 8129153Abstract: 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: GrantFiled: August 11, 2009Date of Patent: March 6, 2012Assignee: E. I. du Pont de Nemours and CompanyInventors: Robert DiCosimo, Mark Scott Payne, Eugenia Costa Hann
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Patent number: 8105810Abstract: 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: GrantFiled: October 1, 2009Date of Patent: January 31, 2012Assignee: E. I. du Pont de Nemours and CompanyInventors: Robert DiCosimo, William R. Cahill, David George DiPietro, Eugenia Costa Hann, Richard Alan Reynolds
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Patent number: 8063008Abstract: 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: GrantFiled: May 22, 2009Date of Patent: November 22, 2011Assignee: E. I. du Pont de Nemours and CompanyInventors: Robert DiCosimo, Mark Scott Payne, Eugenia Costa Hann, Vincent Brian Croud, John Edward Gavagan, Lorraine Winona Wagner
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Patent number: 7780911Abstract: 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: GrantFiled: April 30, 2009Date of Patent: August 24, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: Robert DiCosimo, Mark Scott Payne, Eugenia Costa Hann, Vincent Brian Croud, John Edward Gavagan, Lorraine Winona Wagner
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Publication number: 20100087528Abstract: 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: ApplicationFiled: October 1, 2009Publication date: April 8, 2010Inventors: Robert DiCosimo, William R. Cahill, David George Dipietro, Eugenia Costa Hann, Richard Alan Reynolds
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Publication number: 20100086621Abstract: 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: ApplicationFiled: October 1, 2009Publication date: April 8, 2010Inventors: Robert DiCosimo, Arie Ben-Bassat, William R. Cahill, David George Dipietro, Eugenia Costa Hann, Mark S. Payne, Richard Alan Reynolds, Raymond Richard Zolandz
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Publication number: 20100086510Abstract: 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: ApplicationFiled: October 1, 2009Publication date: April 8, 2010Inventors: Robert DiCosimo, Arie Ben-Bassat, William R. Cahill, David George Dipietro, Eugenia Costa Hann, Marks S. Payne, Richard Alan Reynolds, Raymond Richard Zolandz
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Publication number: 20100048448Abstract: 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: ApplicationFiled: August 11, 2009Publication date: February 25, 2010Inventors: Robert DiCosimo, Mark Scott Payne, Eugenia Costa Hann
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Publication number: 20100016429Abstract: 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: ApplicationFiled: September 23, 2009Publication date: January 21, 2010Inventors: Robert DiCosimo, Mark S. Payne, Vincent Brian Croud, John E. Gavagan, Lorraine W. Wagner, Eugenia Costa Hann
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Patent number: 7612030Abstract: 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: GrantFiled: April 28, 2006Date of Patent: November 3, 2009Assignee: E. I. du Pont de Nemours and CompanyInventors: Robert DiCosimo, Mark S. Payne, Vincent Brian Croud, John E. Gavagan, Lorraine W. Wagner, Eugenia Costa Hann
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Publication number: 20090247631Abstract: 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: ApplicationFiled: May 22, 2009Publication date: October 1, 2009Inventors: Robert DiCosimo, Mark S. Payne, Vincent Brian Croud, John E. Gavagan, Lorraine W. Wagner, Eugenia Costa Hann