Patents by Inventor John Edward Gavagan

John Edward Gavagan 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: 8962294
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: February 24, 2015
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert Dicosimo, Mark Payne Scott, John Edward Gavagan
  • Patent number: 8956843
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: February 17, 2015
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, Mark Scott Payne, John Edward Gavagan
  • Patent number: 8809030
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: August 19, 2014
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert Dicosimo, Mark Scott Payne, John Edward Gavagan
  • Patent number: 8735125
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: May 27, 2014
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert Dicosimo, Mark Scott Payne, John Edward Gavagan
  • Publication number: 20140113966
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Application
    Filed: October 22, 2012
    Publication date: April 24, 2014
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: ROBERT DICOSIMO, MARK SCOTT PAYNE, JOHN EDWARD GAVAGAN
  • Patent number: 8557556
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: October 15, 2013
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert Dicosimo, Mark Scott Payne, John Edward Gavagan
  • Patent number: 8546119
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: October 1, 2013
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, Mark Scott Payne, John Edward Gavagan
  • Patent number: 8546120
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: October 1, 2013
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert Dicosimo, Mark Scott Payne, John Edward Gavagan
  • Patent number: 8501447
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: August 6, 2013
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, Mark Scott Payne, John Edward Gavagan
  • Patent number: 8486679
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: July 16, 2013
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, Mark Scott Payne, John Edward Gavagan
  • Patent number: 8450091
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: May 28, 2013
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert Dicosimo, John Edward Gavagan, Mark Scott Payne
  • Patent number: 8445242
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: May 21, 2013
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, John Edward Gavagan, Mark Scott Payne
  • Patent number: 8399234
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: March 19, 2013
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, Mark Scott Payne, John Edward Gavagan
  • Patent number: 8394617
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: March 12, 2013
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, Mark Scott Payne, John Edward Gavagan
  • Patent number: 8394616
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: March 12, 2013
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, Mark Scott Payne, John Edward Gavagan
  • Patent number: 8389255
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: March 5, 2013
    Assignee: E.I. de Pont de Nemours and Company
    Inventors: Robert Dicosimo, John Edward Gavagan, Mark Scott Payne
  • Patent number: 8389254
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: March 5, 2013
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Robert Dicosimo, John Edward Gavagan, Mark Scott Payne
  • Patent number: 8389258
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: March 5, 2013
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, Mark Scott Payne, John Edward Gavagan
  • Patent number: 8389257
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: March 5, 2013
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert Dicosimo, Mark Scott Payne, John Edward Gavagan
  • Patent number: 8389260
    Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritime acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: March 5, 2013
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, Mark Scott Payne, John Edward Gavagan