Patents by Inventor John D. Hilgren

John D. Hilgren 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: 10342231
    Abstract: The present invention relates to compositions including peroxyacetic acid and peroxyoctanoic acid and methods for preventing microbial growth in aqueous streams including the step of applying a composition of the invention to the stream. The compositions and methods can control microbial growth in aqueous streams used for transporting or processing food products.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: July 9, 2019
    Assignee: Ecolab USA Inc.
    Inventors: John D. Hilgren, Francis L. Richter, Joy A. Salverda, Heidi M. Hanson, Paul F. Schacht, Timothy A. Gutzmann
  • Publication number: 20160106096
    Abstract: The present invention relates to compositions including peroxyacetic acid and peroxyoctanoic acid and methods for preventing microbial growth in aqueous streams including the step of applying a composition of the invention to the stream. The compositions and methods can control microbial growth in aqueous streams used for transporting or processing food products.
    Type: Application
    Filed: December 28, 2015
    Publication date: April 21, 2016
    Inventors: John D. Hilgren, Francis L. Richter, Joy A. Salverda, Heidi M. Hanson, Paul F. Schacht, Timothy A. Gutzmann
  • Patent number: 9254400
    Abstract: The present disclosure relates to a multi-step method for processing peroxygen solutions for reuse or disposal. The method uses an enzyme and a reducing agent.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: February 9, 2016
    Assignee: Ecolab USA Inc.
    Inventors: John D. Hilgren, Jelte Lanting, Roger John Arthur Tippett
  • Patent number: 9247738
    Abstract: The present invention relates to compositions including peroxyacetic acid and peroxyoctanoic acid and methods for preventing microbial growth in aqueous streams including the step of applying a composition of the invention to the stream. The compositions and methods can control microbial growth in aqueous streams used for transporting or processing food products.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: February 2, 2016
    Assignee: Ecolab USA Inc.
    Inventors: John D. Hilgren, Francis L. Richter, Joy A. Salverda, Heidi M. Hanson, Paul F. Schacht, Timothy A. Gutzmann
  • Patent number: 8424493
    Abstract: The present invention relates to compositions including peroxyacetic acid and peroxyoctanoic acid and methods for reducing microbial contamination on poultry. The methods include the step of applying a mixed peroxycarboxylic acid composition to poultry.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: April 23, 2013
    Assignee: Ecolab USA Inc.
    Inventors: John D. Hilgren, Timothy A. Gutzmann, Robert D. Hei
  • Publication number: 20120282851
    Abstract: An apparatus (10) for washing eviscerated poultry carcasses (12) has a housing (11), a conveyor (15a) for moving the shackled poultry carcasses through the housing. A guide bar (24) tilts the poultry carcasses (12) from a vertical position for spraying by a first set of nozzles (23). The first set of nozzles (23) delivers a cleaning solution (100) at a sufficient flow rate and line pressure, whereby a portion of the cleaning solution (100) is deflected back out the rear opening (12d) of the poultry carcass (12).
    Type: Application
    Filed: July 19, 2012
    Publication date: November 8, 2012
    Applicant: ECOLAB USA INC.
    Inventors: John D. Hilgren, Scott P. Bennett, Gabriel M. Miller
  • Patent number: 8246429
    Abstract: An apparatus (10) for washing eviscerated poultry carcasses (12) has a housing (11), a conveyor (15a) for moving the shackled poultry carcasses through the housing. A guide bar (24) tilts the poultry carcasses (12) from a vertical position for spraying by a first set of nozzles (23). The first set of nozzles (23) delivers a cleaning solution (100) at a sufficient flow rate and line pressure, whereby a portion of the cleaning solution (100) is deflected back out the rear opening (12d) of the poultry carcass (12).
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: August 21, 2012
    Assignee: Ecolab USA Inc.
    Inventors: John D. Hilgren, Scott P. Bennett, Gabriel M. Miller
  • Publication number: 20120070549
    Abstract: A method of treating a food product with an antimicrobial agent composition is described. The method includes steps of applying an antimicrobial agent composition to a food product, subjecting the food product to a negative pressure environment wherein the negative pressure environment comprises a pressure that is at least 10 mm Hg below atmospheric pressure, and releasing the negative pressure environment to atmospheric pressure at a rate sufficient to cause a reduction in the amount of microbes as compared to applying an antimicrobial agent without the application of negative pressure. The method of the invention may cause infusion of at least a portion of the antimicrobial agent composition into the food product. A food product treated with an antimicrobial agent composition is described.
    Type: Application
    Filed: September 21, 2010
    Publication date: March 22, 2012
    Applicant: ECOLAB USA INC.
    Inventors: Timothy A. Gutzmann, John D. Hilgren
  • Patent number: 8128976
    Abstract: The present invention relates to methods for reducing microbial contamination on poultry, or on surfaces used in processing poultry, employing compositions including medium chain peroxycarboxylic acid, and to the compositions. The methods include applying a medium chain peroxycarboxylic acid composition to poultry or to the surfaces.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: March 6, 2012
    Assignee: Ecolab USA Inc.
    Inventors: Victor F. Man, Joshua P. Magnuson, John D. Hilgren
  • Publication number: 20110294408
    Abstract: The present invention relates to compositions including peroxyacetic acid and peroxyoctanoic acid and methods for reducing microbial contamination on poultry. The methods include the step of applying a mixed peroxycarboxylic acid composition to poultry.
    Type: Application
    Filed: August 11, 2011
    Publication date: December 1, 2011
    Applicant: ECOLAB USA INC.
    Inventors: John D. Hilgren, Timothy A. Gutzmann, Robert D. Hei
  • Patent number: 8020520
    Abstract: The present invention relates to compositions including peroxyacetic acid and peroxyoctanoic acid and methods for reducing microbial contamination on poultry. The methods include the step of applying a mixed peroxycarboxylic acid composition to poultry.
    Type: Grant
    Filed: October 11, 2010
    Date of Patent: September 20, 2011
    Assignee: Ecolab USA Inc.
    Inventors: John D. Hilgren, Timothy A. Gutzmann, Robert D. Hei
  • Publication number: 20110217761
    Abstract: The present disclosure relates to a multi-step method for processing peroxygen solutions for reuse or disposal. The method uses an enzyme and a reducing agent.
    Type: Application
    Filed: March 1, 2011
    Publication date: September 8, 2011
    Applicant: Ecolab USA Inc.
    Inventors: John D. Hilgren, Jelte Lanting, Roger John Arthur Tippett
  • Publication number: 20110027383
    Abstract: The present invention relates to compositions including peroxyacetic acid and peroxyoctanoic acid and methods for reducing microbial contamination on poultry. The methods include the step of applying a mixed peroxycarboxylic acid composition to poultry.
    Type: Application
    Filed: October 11, 2010
    Publication date: February 3, 2011
    Applicant: ECOLAB USA INC.
    Inventors: John D. Hilgren, Timothy A. Gutzmann, Robert D. Hei
  • Patent number: 7832360
    Abstract: The present invention relates to compositions including peroxyacetic acid and peroxyoctanoic acid and methods for reducing microbial contamination on poultry. The methods include the step of applying a mixed peroxycarboxylic acid composition to poultry.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: November 16, 2010
    Assignee: Ecolab USA Inc.
    Inventors: John D. Hilgren, Timothy A. Gutzmann, Robert D. Hei
  • Publication number: 20100087530
    Abstract: The present invention relates to methods for reducing microbial contamination on poultry, or on surfaces used in processing poultry, employing compositions including medium chain peroxycarboxylic acid, and to the compositions. The methods include applying a medium chain peroxycarboxylic acid composition to poultry or to the surfaces.
    Type: Application
    Filed: December 8, 2009
    Publication date: April 8, 2010
    Applicant: ECOLAB INC.
    Inventors: Victor F. Man, Joshua P. Magnuson, John D. Hilgren
  • Publication number: 20090324790
    Abstract: The present invention is directed to methods and systems for reconditioning a used food processing fluid. The reconditioned fluids can be used in an upstream or downstream food processing application.
    Type: Application
    Filed: June 26, 2009
    Publication date: December 31, 2009
    Applicant: ECOLAB INC.
    Inventors: John D. Hilgren, Stefanie E. Gilbreth
  • Patent number: 7638067
    Abstract: A food processing effluent refurbishing system of the present invention refurbishes effluent water in a first and a second food processing loop. The system includes first and second circulation systems, first and second balance tanks, and a side stream. The first circulation system circulates water through the first food processing loop. The first balance tank connected to the first circulation system refurbishes effluent water circulating through the first food processing loop. The second circulation system circulates water through the second food processing loop. The second balance tank connected to the second circulation system refurbishes effluent water circulating through the second food processing loop. The side stream connects the first and second circulation systems.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: December 29, 2009
    Assignee: Ecolab Inc.
    Inventors: John D. Hilgren, Roger J. Tippett, Scott L. Burnett
  • Publication number: 20090145859
    Abstract: The present invention relates to methods for reducing microbial contamination on poultry, or on surfaces used in processing poultry, employing compositions including medium chain peroxycarboxylic acid, and to the compositions. The methods include applying a medium chain peroxycarboxylic acid composition to poultry or to the surfaces.
    Type: Application
    Filed: January 19, 2009
    Publication date: June 11, 2009
    Applicant: ECOLAB INC.
    Inventors: Victor F. Man, Joshua P. Magnuson, John D. Hilgren
  • Patent number: 7504123
    Abstract: The present invention relates to methods for reducing microbial contamination on poultry, or on surfaces used in processing poultry, employing compositions including medium chain peroxycarboxylic acid, and to the compositions. The methods include applying a medium chain peroxycarboxylic acid composition to poultry or to the surfaces.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: March 17, 2009
    Assignee: Ecolab Inc.
    Inventors: Victor Fuk-Pong Man, Joshua Paul Magnuson, John D. Hilgren
  • Patent number: 7498051
    Abstract: The present invention relates to methods for reducing microbial contamination on poultry, or on surfaces used in processing poultry, employing compositions including medium chain peroxycarboxylic acid, and to the compositions. The methods include applying a medium chain peroxycarboxylic acid composition to poultry or to the surfaces.
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: March 3, 2009
    Assignee: Ecolab Inc.
    Inventors: Victor Fuk-Pong Man, Joshua Paul Magnuson, John D. Hilgren