Patents by Inventor William E. Foltz

William E. Foltz 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).

  • Publication number: 20220160920
    Abstract: The disclosed sterilization monitoring device comprises a perfusion channel with a chemical indicating composition disposed in fluid communication with the perfusion channel. Exposure to a sterilant creates a laterally moving front across the chemical indicating composition in the perfusion channel.
    Type: Application
    Filed: December 17, 2019
    Publication date: May 26, 2022
    Inventors: G. Marco Bommarito, Scott D. Anderson, Ryan W. Clarke, Paul N. Holt, William E. Foltz, Timothy J. Nies, Kevin D. Landgrebe, Jeffrey D. Cotton, Ryan T. Woldt
  • Publication number: 20220054692
    Abstract: The present disclosure relates generally to chemical indicators. In particular, the chemical indicators are useful for monitoring sterilization processes. The chemical indicator includes a fluid pathway and a chamber comprises a chemical-indicating composition.
    Type: Application
    Filed: December 19, 2019
    Publication date: February 24, 2022
    Inventors: G. Marco Bommarito, Scott D. Anderson, Ryan W. Clarke, Paul N. Holt, William E. Foltz, Timothy J. Nies, Kevin D. Landgrebe
  • Publication number: 20210038753
    Abstract: A self-contained biological sterilization indicator is provided. The self-contained biological sterilization indicator includes an outer container having at least one liquid-impermeable wall and an interior volume; a sealed, openable, liquid-impermeable inner container enclosing a predetermined volume of an aqueous medium; a dry coating that comprises i) a plurality of viable test microorganisms useful to detect exposure to an oxidative sterilant and ii) an effective amount of a sterilant-resistance modulator; and a pathway that permits vapor communication between the interior volume and an atmosphere outside the outer container. The inner container and the dry coating are disposed in the interior volume. The modulator comprises an amino acid. The effective amount causes an increase in sensitivity of the test microorganisms to the oxidative sterilant relative to an otherwise-identical dry coating that lacks the effective amount.
    Type: Application
    Filed: October 22, 2020
    Publication date: February 11, 2021
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: SWARNALATHA SWAMINATHAN, ASSUMPTA A. G. BENNAARS-EIDEN, FRANCOIS AHIMOU, WILLIAM E. FOLTZ
  • Patent number: 10059977
    Abstract: Spore carriers suitable for use in biological indicators are described. The spore carriers include a substrate such as polymeric film or non-woven web with a hydrophilic nanostructured layer bonded to it. Spores are bonded to the nanostructured layer. Nanostructured layers including nanoparticles, such as acid-sintered silica nanoparticles are described. Biological indicators including such spore carriers are also described.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: August 28, 2018
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Kelvin J. Witcher, William E. Foltz, Naiyong Jing
  • Publication number: 20180015193
    Abstract: A self-contained biological sterilization indicator is provided. The self-contained biological sterilization indicator includes an outer container having at least one liquid-impermeable wall and an interior volume; a sealed, openable, liquid-impermeable inner container enclosing a predetermined volume of an aqueous medium; a dry coating that comprises i) a plurality of viable test microorganisms useful to detect exposure to an oxidative sterilant and ii) an effective amount of a sterilant-resistance modulator; and a pathway that permits vapor communication between the interior volume and an atmosphere outside the outer container. The inner container and the dry coating are disposed in the interior volume. The modulator comprises an amino acid. The effective amount causes an increase in sensitivity of the test microorganisms to the oxidative sterilant relative to an otherwise-identical dry coating that lacks the effective amount.
    Type: Application
    Filed: October 6, 2015
    Publication date: January 18, 2018
    Inventors: SWARNALATHA SWAMINATHAN, ASSUMPTA A.G. BENNAARS-EIDEN, FRANCOIS AHIMOU, WILLIAM E. FOLTZ
  • Publication number: 20170252475
    Abstract: An article and method are provided for assessing the efficacy of a sterilization process. The article comprises an outer container having an interior volume; a dry source of measurable biological activity disposed in the interior volume; and an effective amount of a dry agent for neutralizing a sterilant compound; wherein both the source of measurable biological activity and the agent are in vapor communication with an environment outside the outer container. The method comprises exposing the article to a first sterilant and, optionally, a second sterilant for a period of time and detecting the measurable biological activity.
    Type: Application
    Filed: May 22, 2017
    Publication date: September 7, 2017
    Inventors: Francois Ahimou, Assumpta Bennaars-Eiden, William E. Foltz, Swarnalatha Swaminathan
  • Publication number: 20170218428
    Abstract: Spore carriers suitable for use in biological indicators are described. The spore carriers include a substrate such as polymeric film or non-woven web with a hydrophilic nanostructured layer bonded to it. Spores are bonded to the nanostructured layer. Nanostructured layers including nanoparticles, such as acid-sintered silica nanoparticles are described. Biological indicators including such spore carriers are also described.
    Type: Application
    Filed: April 11, 2017
    Publication date: August 3, 2017
    Inventors: KELVIN J. WITCHER, WILLIAM E. FOLTZ, NAIYONG JING
  • Patent number: 9675722
    Abstract: An article and method are provided for assessing the efficacy of a sterilization process. The article comprises an outer container having an interior volume; a dry source of measurable biological activity disposed in the interior volume; and an effective amount of a dry agent for neutralizing a sterilant compound; wherein both the source of measurable biological activity and the agent are in vapor communication with an environment outside the outer container. The method comprises exposing the article to a first sterilant and, optionally, a second sterilant for a period of time and detecting the measurable biological activity.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: June 13, 2017
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Francois Ahimou, Assumpta Bennaars-Eiden, William E. Foltz, Swarnalatha Swaminathan
  • Patent number: 9650661
    Abstract: Spore carriers suitable for use in biological indicators are described. The spore carriers include a substrate such as polymeric film or non-woven web with a hydrophilic nanostructured layer bonded to it. Spores are bonded to the nanostructured layer. Nanostructured layers including nanoparticles, such as acid-sintered silica nanoparticles are described. Biological indicators including such spore carriers are also described.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: May 16, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Kelvin J. Witcher, William E. Foltz, Naiyong Jing
  • Publication number: 20160228593
    Abstract: A process challenge device comprising process challenge device comprising a container defining a space within the container, wherein the space can fully contain a process indicator; and at least one pressure-actuating valve associated with the container, wherein the at least one pressure-actuating valve regulates entrance of a sterilant into and exiting of a gas and/or liquid out of the space within the container, methods of using the device and a kit including the device are disclosed.
    Type: Application
    Filed: April 18, 2016
    Publication date: August 11, 2016
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Barry W. ROBOLE, William E. FOLTZ
  • Patent number: 9334521
    Abstract: A process challenge device comprising process challenge device comprising a container defining a space within the container, wherein the space can fully contain a process indicator; and at least one pressure-actuating valve associated with the container, wherein the at least one pressure-actuating valve regulates entrance of a sterilant into and exiting of a gas and/or liquid out of the space within the container, methods of using the device and a kit including the device are disclosed.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: May 10, 2016
    Assignee: 3m Innovative Properties Company
    Inventors: Barry W. Robole, William E. Foltz
  • Publication number: 20160083771
    Abstract: Spore carriers suitable for use in biological indicators are described. The spore carriers include a substrate such as polymeric film or non-woven web with a hydrophilic nanostructured layer bonded to it. Spores are bonded to the nanostructured layer. Nanostructured layers including nanoparticles, such as acid-sintered silica nanoparticles are described. Biological indicators including such spore carriers are also described.
    Type: Application
    Filed: May 13, 2014
    Publication date: March 24, 2016
    Inventors: KELVIN J. WITCHER, WILLIAM E. FOLTZ, NAIYONG JING
  • Publication number: 20160000954
    Abstract: An article and method are provided for assessing the efficacy of a sterilization process. The article comprises an outer container having an interior volume; a dry source of measurable biological activity disposed in the interior volume; and an effective amount of a dry agent for neutralizing a sterilant compound; wherein both the source of measurable biological activity and the agent are in vapor communication with an environment outside the outer container. The method comprises exposing the article to a first sterilant and, optionally, a second sterilant for a period of time and detecting the measurable biological activity.
    Type: Application
    Filed: February 20, 2014
    Publication date: January 7, 2016
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: FRANCOIS AHIMOU, ASSUMPTA BENNAARS-EIDEN, WILLIAM E. FOLTZ, SWARNALATHA SWAMINATHAN
  • Patent number: 9114186
    Abstract: A sterilization process challenge device comprising a solid body comprised of walls which define a space, wherein the space can fully contain a sterilization indicator and a volume of gas of at least 5 cubic centimeters and not more than 1000 cubic centimeters; a flow restrictor associated with the solid body such that any flow of the gas out of the space and any flow of a sterilant into the space is restricted; wherein the sterilization indicator indicates whether or not it has been contacted by the sterilant for a time and at a temperature sufficient to sterilize an article; and wherein the walls of the solid body are impervious to the sterilant and have a thickness of at least 0.3 centimeter, methods of using the device and a kit including the device are disclosed.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: August 25, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: William E. Foltz, Steven S. Kirckof, Lawrence D. Fosler, Joshua M. Schmitz, Barry W. Robole, Chad M. Herrlein
  • Publication number: 20150159192
    Abstract: Sterilization indicators that include a neutralizer, such indicators useful for testing the effectiveness of a sterilization procedure by measuring the activity of an active enzyme whose activity is correlated with the survival of microorganisms.
    Type: Application
    Filed: January 29, 2015
    Publication date: June 11, 2015
    Inventors: WILLIAM E. FOLTZ, FRANCOIS AHIMOU, G. MARCO BOMMARITO, ROBERT A. ASMUS, LOUIS C. HADDAD, TUSHAR A. KSHIRSAGAR
  • Patent number: 8975067
    Abstract: Sterilization indicators that include a neutralizer, such indicators useful for testing the effectiveness of a sterilization procedure by measuring the activity of an active enzyme whose activity is correlated with the survival of microorganisms.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: March 10, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: William E. Foltz, Francois Ahimou, G. Marco Bommarito, Robert A. Asmus, Louis C. Haddad, Tushar A. Kshirsagar
  • Publication number: 20130273593
    Abstract: Sterilization indicators that include a neutralizer, such indicators useful for testing the effectiveness of a sterilization procedure by measuring the activity of an active enzyme whose activity is correlated with the survival of microorganisms.
    Type: Application
    Filed: December 20, 2011
    Publication date: October 17, 2013
    Applicant: 3M Innovative Properties Company
    Inventors: William E. Foltz, Francois Ahimou, G. Marco Bommarito, Robert A. Asmus, Louis C. Haddad, Tushar A. Kshirsagar
  • Publication number: 20120164056
    Abstract: The disclosure provides processes and systems for sterilizing an object using a sterilant gas. In some embodiments, the sterilant gas is produced by the thermal decomposition of a salt. Compositions to generate sterilant gasses are also disclosed.
    Type: Application
    Filed: June 28, 2010
    Publication date: June 28, 2012
    Inventors: Louis C. Haddad, William E. Foltz, Greggory S. Bennett, Robert A. Asmus
  • Publication number: 20110217203
    Abstract: A process challenge device comprising process challenge device comprising a container defining a space within the container, wherein the space can fully contain a process indicator; and at least one pressure-actuating valve associated with the container, wherein the at least one pressure-actuating valve regulates entrance of a sterilant into and exiting of a gas and/or liquid out of the space within the container, methods of using the device and a kit including the device are disclosed.
    Type: Application
    Filed: November 5, 2009
    Publication date: September 8, 2011
    Inventors: Barry W. Robole, William E. Foltz
  • Publication number: 20110211991
    Abstract: A sterilization process challenge device comprising a first container comprising walls which define a first space within the first container; a process indicator within the first space; at least one sterilant access for a sterilant to enter the first space within the first container; wherein at least one of the walls which defines the first space is a flexible wall; and wherein the walls are impervious to the sterilant; a method of using the device; and a kit including the device are disclosed.
    Type: Application
    Filed: November 5, 2009
    Publication date: September 1, 2011
    Inventors: William E. Foltz, Chad M. Herrlein, Joshua M. Schmitz, Barry W. Robole, Kelvin J. Witcher, Paul N. Holt