Patents by Inventor Bryan Stubblefield
Bryan Stubblefield 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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Publication number: 20230250253Abstract: Compositions and methods for reducing pollution from postconsumer wastes derived from a polymeric material are disclosed. The methods involve depolymerizing the polymeric material and optionally bioconverting the depolymerized polymeric material, the product of which can be used as feedstocks for other bioconversion processes to make biochemicals and other value-added biological products. In some embodiments, the depolymerized polymeric materials can be used to make a culture medium. The culture media are suitable for producing a bioproduct from microorganisms including bacterium, alga, and fungus or an enzyme.Type: ApplicationFiled: June 25, 2021Publication date: August 10, 2023Inventors: Merhawi Mihreteab, Bryan Stubblefield, Eric Gilbert
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Publication number: 20210047494Abstract: Compositions and methods of making a culture medium from a polymeric material are described herein. The method can include (a) depolymerizing and/or dispersing the polymeric material to obtain a depolymerized and/or dispersed residue, and (b) combining the depolymerized and/or dispersed residue with one or more adjuvants to form a culture medium. In some embodiments, the polymeric material can be a plastic article, such as a waste carpet material. Culture media prepared from the compositions and methods are also described. The culture media are suitable for culturing microorganisms including bacterium, algae, and fungus. The microorganisms can be used to produce a bioproduct such as a biopolymer, an enzyme, or a cellular metabolite.Type: ApplicationFiled: November 2, 2020Publication date: February 18, 2021Inventors: Bryan Stubblefield, Eric Gilbert
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Patent number: 10900007Abstract: According to various implementations, the bioreactor system includes a bioreactor vessel, an impeller for stirring contents within the vessel, a temperature control source for controlling the temperature of the contents of the vessel, an aeration system for supplying air to the vessel, and one or more data loggers. According to certain implementations, the impeller is a novel impeller design that spins more smoothly and rapidly than known impellers. In addition, the bioreactor system is modular, durable, and relatively inexpensive compared to existing bioreactor systems, which allows for bench-scale implementation, use with differently sized bioreactor vessels, and accessibility to more educational programs, according to some implementations.Type: GrantFiled: December 1, 2016Date of Patent: January 26, 2021Assignee: GEORGIA STATE UNIVERSITY RESEARCH FOUNDATION, INC.Inventors: Bryan Stubblefield, Eric Gilbert
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Patent number: 10822469Abstract: Compositions and methods of making a culture medium from a polymeric material are described herein. The method can include (a) depolymerizing and/or dispersing the polymeric material to obtain a depolymerized and/or dispersed residue, and (b) combining the depolymerized and/or dispersed residue with one or more adjuvants to form a culture medium. In some embodiments, the polymeric material can be a plastic article, such as a waste carpet material. Culture media prepared from the compositions and methods are also described. The culture media are suitable for culturing microorganisms including bacterium, algae, and fungus. The microorganisms can be used to produce a bioproduct such as a biopolymer, an enzyme, or a cellular metabolite.Type: GrantFiled: August 4, 2016Date of Patent: November 3, 2020Assignee: Georgia State University Research Foundation, Inc.Inventors: Bryan Stubblefield, Eric Gilbert
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Patent number: 10646580Abstract: This disclosure relates to conjugates for targeting bacteria and related uses. In certain embodiments, the disclosure relates to methods of transferring a molecule of interest into bacteria comprising mixing bacteria with a non-naturally occurring conjugate under conditions such that the conjugate is transported across the bacterial cell wall. Typically, the conjugate comprises an oligosaccharide and a molecule of interest. In certain embodiments, the molecule of interest may be a tracer or an antibiotic.Type: GrantFiled: November 2, 2017Date of Patent: May 12, 2020Assignees: Emory University, Georgia Tech Research Corporation, Georgia State University Research Foundation, Inc.Inventors: Niren Murthy, Eric Seth Gilbert, Xinghai Ning, Mark Goodman, Bryan Stubblefield
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Publication number: 20180346863Abstract: According to various implementations, the bioreactor system includes a bioreactor vessel, an impeller for stirring contents within the vessel, a temperature control source for controlling the temperature of the contents of the vessel, an aeration system for supplying air to the vessel, and one or more data loggers. According to certain implementations, the impeller is a novel impeller design that spins more smoothly and rapidly than known impellers. In addition, the bioreactor system is modular, durable, and relatively inexpensive compared to existing bioreactor systems, which allows for bench-scale implementation, use with differently sized bioreactor vessels, and accessibility to more educational programs, according to some implementations.Type: ApplicationFiled: December 1, 2016Publication date: December 6, 2018Inventors: Bryan Stubblefield, Eric Gilbert
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Publication number: 20180230286Abstract: Compositions and methods of making a culture medium from a polymeric material are described herein. The method can include (a) depolymerizing and/or dispersing the polymeric material to obtain a depolymerized and/or dispersed residue, and (b) combining the depolymerized and/or dispersed residue with one or more adjuvants to form a culture medium. In some embodiments, the polymeric material can be a plastic article, such as a waste carpet material. Culture media prepared from the compositions and methods are also described. The culture media are suitable for culturing microorganisms including bacterium, algae, and fungus. The microorganisms can be used to produce a bioproduct such as a biopolymer, an enzyme, or a cellular metabolite.Type: ApplicationFiled: August 4, 2016Publication date: August 16, 2018Inventors: Bryan Stubblefield, Eric Gilbert
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Publication number: 20180125991Abstract: This disclosure relates to conjugates for targeting bacteria and related uses. In certain embodiments, the disclosure relates to methods of transferring a molecule of interest into bacteria comprising mixing bacteria with a non-naturally occurring conjugate under conditions such that the conjugate is transported across the bacterial cell wall. Typically, the conjugate comprises an oligosaccharide and a molecule of interest. In certain embodiments, the molecule of interest may be a tracer or an antibiotic.Type: ApplicationFiled: November 2, 2017Publication date: May 10, 2018Inventors: Niren Murthy, Eric Seth Gilbert, Xinghai Ning, Mark Goodman, Bryan Stubblefield
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Patent number: 9821071Abstract: This disclosure relates to conjugates for targeting bacteria and related uses. In certain embodiments, the disclosure relates to methods of transferring a molecule of interest into bacteria comprising mixing bacteria with a non-naturally occurring conjugate under conditions such that the conjugate is transported across the bacterial cell wall. Typically, the conjugate comprises an oligosaccharide and a molecule of interest. In certain embodiments, the molecule of interest may be a tracer or an antibiotic.Type: GrantFiled: February 26, 2014Date of Patent: November 21, 2017Assignees: Emory University, Georgia Tech Research Corporation, Georgia State University Research Foundation, Inc.Inventors: Niren Murthy, Eric Seth Gilbert, Xinghai Ning, Mark Goodman, Bryan Stubblefield
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Publication number: 20140219917Abstract: This disclosure relates to conjugates for targeting bacteria and related uses. In certain embodiments, the disclosure relates to methods of transferring a molecule of interest into bacteria comprising mixing bacteria with a non-naturally occurring conjugate under conditions such that the conjugate is transported across the bacterial cell wall. Typically, the conjugate comprises an oligosaccharide and a molecule of interest. In certain embodiments, the molecule of interest may be a tracer or an antibiotic.Type: ApplicationFiled: February 26, 2014Publication date: August 7, 2014Applicants: Emory University, Georgia State Research Foundation, Georgia Tech Research CorporationInventors: Niren MURTHY, Eric Seth Gilbert, Xinghai Ning, Mark Goodman, Bryan Stubblefield