Patents by Inventor RuthAnn R. Duda
RuthAnn R. Duda 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: 11260140Abstract: A microbial indicator device for liquid disinfection comprises a first cavity, a source of biological activity fluidically coupled to the first cavity via a portion of a first fluidic path, a filter membrane positioned in a second fluidic path for a disinfectant, and a first coupling portion fluidically coupled to the source of biologically activity via the second fluidic path. The filter membrane has a first side and a second side, wherein the first side is in fluid communication with the first fluidic path. The filter membrane has a pore size sufficient to retain at least a portion of the source of biological activity on the first side. The device further comprises a frangible container contained in the first cavity, wherein a liquid in the container is in fluid communication with the first cavity when the container is fractured.Type: GrantFiled: October 12, 2017Date of Patent: March 1, 2022Assignee: 3M Innovative Properties CompanyInventors: G. Marco Bommarito, Timothy J. Nies, Barry W. Robole, Assumpta A. G. Bennaars-Eiden, Jodi L. Connell, Tonya D. Bonilla, Timothy A. Kohman, Ruthann R. Duda
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Publication number: 20220047752Abstract: A method of verifying the efficacy of a disinfection process is provided. The method includes flowing a liquid disinfectant into an indicator device that has a plurality of indicator microorganisms disposed therein, the indicator microorganisms comprising or capable of producing a detectable enzyme activity; contacting the indicator microorganisms with the liquid disinfectant for a predetermined minimum first period of time at a first temperature; after contacting the indicator microorganisms with the liquid disinfectant for the first period of time at the first temperature, contacting the indicator microorganisms for a second period of time with a detection medium comprising a detection reagent; and during or after the second period of time, detecting a quantity of the detectable enzyme activity that was not inactivated by the contact with the disinfectant. The indicator device is also provided.Type: ApplicationFiled: August 2, 2017Publication date: February 17, 2022Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: ASSUMPTA A.G. BENNAARS-EIDEN, G. MARCO BOMMARITO, TONYA D. BONILLA, JODI L. CONNELL, RUTHANN R. DUDA, FEDERICA SGOLASTRA, ANDREW W. VAIL
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Publication number: 20190255208Abstract: A microbial indicator device for liquid disinfection comprises a first cavity, a source of biological activity fluidically coupled to the first cavity via a portion of a first fluidic path, a filter membrane positioned in a second fluidic path for a disinfectant, and a first coupling portion fluidically coupled to the source of biologically activity via the second fluidic path. The filter membrane has a first side and a second side, wherein the first side is in fluid communication with the first fluidic path. The filter membrane has a pore size sufficient to retain at least a portion of the source of biological activity on the first side. The device further comprises a frangible container contained in the first cavity, wherein a liquid in the container is in fluid communication with the first cavity when the container is fractured.Type: ApplicationFiled: October 12, 2017Publication date: August 22, 2019Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: G. MORCO BOMMARITO, TIMOTHY J. NIES, BARRY W. ROBOLE, ASSUMPTA A. G. BENNAARS-EIDEN, JODI L. CONNELL, TONYA D. BONILLA, TOMOTHY A. KOHMAN, RUTHANN R. DUDA
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Patent number: 10287618Abstract: A composition for monitoring the efficacy of a decontamination process is provided, the composition comprising a cellulose polymer and a predetermined quantity of an adenine nucleotide. A monitoring device comprising a test element with the composition disposed thereon is also provided. The composition and/or monitoring device can be used in a method. The method includes exposing the monitoring device to a decontamination process and subsequently measuring the residual tracer analyte on the monitoring device.Type: GrantFiled: March 24, 2015Date of Patent: May 14, 2019Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Francois Ahimou, RuthAnn R. Duda, G. Marco Bommarito, Timothy J. Nies, Kai Qiu
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Patent number: 10047334Abstract: A biological sterilization indicator (BI). The BI can include a housing, and a container positioned in the housing. The container can contain a liquid and at least a portion of the container can be frangible. The BI can further include a first chamber and a second chamber. The second chamber can include at least one source of biological activity. The BI can further include a substrate positioned in the housing between the first chamber and the second chamber. The substrate can be positioned in fluid communication with the first chamber and the second chamber, and the substrate can be further positioned such that the substrate is not in direct contact with the source of biological activity.Type: GrantFiled: March 9, 2016Date of Patent: August 14, 2018Assignee: 3M Innovative Properties CompanyInventors: Sailaja Chandrapati, Heather M. Webb, Jeffrey C. Pederson, Jeffrey D. Smith, RuthAnn R. Duda, Brian J. Engel
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Publication number: 20170175163Abstract: A composition for monitoring the efficacy of a decontamination process is provided, the composition comprising a cellulose polymer and a predetermined quantity of an adenine nucleotide. A monitoring device comprising a test element with the composition disposed thereon is also provided. The composition and/or monitoring device can be used in a method. The method includes exposing the monitoring device to a decontamination process and subsequently measuring the residual tracer analyte on the monitoring device.Type: ApplicationFiled: March 24, 2015Publication date: June 22, 2017Inventors: FRANCOIS AHIMOU, RuthAnn R. DUDA, G. MARCO BOMMARITO, TIMOTHY J. NIES, KAI QIU
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Patent number: 9540677Abstract: A biological sterilization indicator (BI) and method of using same. The BI can include a housing, and a container positioned in the housing. The container can contain a liquid and at least a portion of the container can be frangible. The BI can further include a first chamber and a second chamber. The second chamber can include at least one source of biological activity. The BI can further include a first fluid path positioned to fluidly couple the first chamber and the second chamber, and a second fluid path positioned to allow displaced gas to move out of the second chamber. The method can include moving displaced gas out of the second chamber via the second fluid path as a sterilant is moved into the second chamber via the first fluid path and/or as the liquid is moved into the second chamber via the first fluid path.Type: GrantFiled: September 17, 2014Date of Patent: January 10, 2017Inventors: Jeffrey D. Smith, Jeffrey C. Pederson, Sailaja Chandrapati, RuthAnn R. Duda
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Publication number: 20160186120Abstract: A biological sterilization indicator (BI). The BI can include a housing, and a container positioned in the housing. The container can contain a liquid and at least a portion of the container can be frangible. The BI can further include a first chamber and a second chamber. The second chamber can include at least one source of biological activity. The BI can further include a substrate positioned in the housing between the first chamber and the second chamber. The substrate can be positioned in fluid communication with the first chamber and the second chamber, and the substrate can be further positioned such that the substrate is not in direct contact with the source of biological activity.Type: ApplicationFiled: March 9, 2016Publication date: June 30, 2016Inventors: Sailaja Chandrapati, Heather M. Webb, Jeffrey C. Pederson, Jeffrey D. Smith, RuthAnn R. Duda, Brian J. Engel
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Patent number: 9322046Abstract: A biological sterilization indicator (BI). The BI can include a housing, and a container positioned in the housing. The container can contain a liquid and at least a portion of the container can be frangible. The BI can further include a first chamber and a second chamber. The second chamber can include at least one source of biological activity. The BI can further include a substrate positioned in the housing between the first chamber and the second chamber. The substrate can be positioned in fluid communication with the first chamber and the second chamber, and the substrate can be further positioned such that the substrate is not in direct contact with the source of biological activity.Type: GrantFiled: October 28, 2011Date of Patent: April 26, 2016Assignee: 3M Innovative Properties CompanyInventors: Sailaja Chandrapati, Heather M. Webb, Jeffrey C. Pederson, Jeffrey D. Smith, RuthAnn R. Duda, Brian J. Engel
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Publication number: 20150004682Abstract: A biological sterilization indicator (BI) and method of using same. The BI can include a housing, and a container positioned in the housing. The container can contain a liquid and at least a portion of the container can be frangible. The BI can further include a first chamber and a second chamber. The second chamber can include at least one source of biological activity. The BI can further include a first fluid path positioned to fluidly couple the first chamber and the second chamber, and a second fluid path positioned to allow displaced gas to move out of the second chamber. The method can include moving displaced gas out of the second chamber via the second fluid path as a sterilant is moved into the second chamber via the first fluid path and/or as the liquid is moved into the second chamber via the first fluid path.Type: ApplicationFiled: September 17, 2014Publication date: January 1, 2015Inventors: Jeffrey D. Smith, Jeffrey C. Pederson, Sailaja Chandrapati, RuthAnn R. Duda
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Patent number: 8840837Abstract: A biological sterilization indicator (BI) and method of using same. The BI can include a housing, and a container positioned in the housing. The container can contain a liquid and at least a portion of the container can be frangible. The BI can further include a first chamber and a second chamber. The second chamber can include at least one source of biological activity. The BI can further include a first fluid path positioned to fluidly couple the first chamber and the second chamber, and a second fluid path positioned to allow displaced gas to move out of the second chamber. The method can include moving displaced gas out of the second chamber via the second fluid path as a sterilant is moved into the second chamber via the first fluid path and/or as the liquid is moved into the second chamber via the first fluid path.Type: GrantFiled: October 28, 2011Date of Patent: September 23, 2014Assignee: 3M Innovative Properties CompanyInventors: Jeffrey D. Smith, Jeffrey C. Pederson, Sailaja Chandrapati, RuthAnn R. Duda
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Publication number: 20130302849Abstract: A biological sterilization indicator (BI) and method of using same. The BI can include a housing, and a container positioned in the housing. The container can contain a liquid and at least a portion of the container can be frangible. The BI can further include a first chamber and a second chamber. The second chamber can include at least one source of biological activity. The BI can further include a first fluid path positioned to fluidly couple the first chamber and the second chamber, and a second fluid path positioned to allow displaced gas to move out of the second chamber. The method can include moving displaced gas out of the second chamber via the second fluid path as a sterilant is moved into the second chamber via the first fluid path and/or as the liquid is moved into the second chamber via the first fluid path.Type: ApplicationFiled: October 28, 2011Publication date: November 14, 2013Inventors: Jeffrey D. Smith, Jeffrey C. Pederson, Sailaja Chandrapati, RuthAnn R. Duda
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Publication number: 20130224849Abstract: A biological sterilization indicator (BI). The BI can include a housing, and a container positioned in the housing. The container can contain a liquid and at least a portion of the container can be frangible. The BI can further include a first chamber and a second chamber. The second chamber can include at least one source of biological activity. The BI can further include a substrate positioned in the housing between the first chamber and the second chamber. The substrate can be positioned in fluid communication with the first chamber and the second chamber, and the substrate can be further positioned such that the substrate is not in direct contact with the source of biological activity.Type: ApplicationFiled: October 28, 2011Publication date: August 29, 2013Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Sailaja Chandrapati, Heather M. Webb, Jeffrey C. Pederson, Jeffrey D. Smith, RuthAnn R. Duda, Brian J. Engel