Patents by Inventor Mark Scott Payne

Mark Scott Payne 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: 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: 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: 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: 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: 8389259
    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: 8389256
    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: 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: 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
  • 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
  • Patent number: 8329441
    Abstract: A process is provided for producing 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. 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.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: December 11, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert Dicosimo, John Edward Gavagan, Mark Scott Payne, Frederick B. Cooling, III
  • Patent number: 8298808
    Abstract: A process is provided for producing 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. 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.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: October 30, 2012
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, John Edward Gavagan, Mark Scott Payne, Frederick B. Cooling
  • Patent number: 8293792
    Abstract: A process is provided for producing 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. 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.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: October 23, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert Dicosimo, John Edward Gavagan, Mark Scott Payne, Frederick B. Cooling, III
  • Patent number: 8273563
    Abstract: A process is provided for producing 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. 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.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: September 25, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, John Edward Gavagan, Mark Scott Payne, Frederick B. Cooling
  • Patent number: 8222012
    Abstract: A process is provided for rapidly producing target concentrations of peroxycarboxylic acids from carboxylic acid esters. More specifically, carboxylic acid esters are reacted with a source of peroxygen, such as hydrogen peroxide, in the presence of an enzyme catalyst comprising an enzyme having identity to an acetyl xylan esterase from Lactococcus lactis having perhydrolysis activity. The polypeptide is an enzyme structurally classified as a member of the carbohydrate esterase family 7 (CE-7). The peroxycarboxylic acids produced by the present process can be used in disinfecting, bleaching, and other laundry care applications. Compositions comprising the reaction components and the peroxycarboxylic acids produced by the process are also provided.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: July 17, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, John Edward Gavagan, Mark Scott Payne
  • Patent number: 8206964
    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: June 26, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert DiCosimo, John Edward Gavagan, Mark Scott Payne
  • Publication number: 20120156160
    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: December 16, 2011
    Publication date: June 21, 2012
    Inventors: Robert DiCosimo, Mark Scott Payne, John Edward Gavagan
  • Publication number: 20120156159
    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: December 16, 2011
    Publication date: June 21, 2012
    Inventors: Robert DiCosimo, Mark Scott Payne, John Edward Gavagan
  • Publication number: 20120156155
    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: December 16, 2011
    Publication date: June 21, 2012
    Inventors: Robert Dicosimo, Mark Scott Payne, John Edward Gavagan