Patents by Inventor Morgana M. Trexler
Morgana M. Trexler 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: 20240092017Abstract: Additive manufacturing processes, systems and three-dimensional articles include the formation of voxels and/or portions of three-dimensional articles with different properties relative to other voxels and/or portions. The processes generally include changing one or more laser beam parameters including power level, exposure time, hatch spacing, point distance, velocity, and energy density during the formation of selected voxels and/or portions of the three-dimensional articles. Also disclosed are processes that include an additive manufacturing process that provides localized secondary heat treatment of certain voxels and/or regions at a temperature below the melting point of the three-dimensional article but high enough to effect a localized property change.Type: ApplicationFiled: November 30, 2023Publication date: March 21, 2024Inventors: Steven M. Storck, Morgana M. Trexler, Andrew M. Lennon, Ian D McCue, Salahudin N. Nimer, Christopher M. Peitsch
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Patent number: 11932970Abstract: A nanofiber comprising a polyamide including at least one substituted phenyl group is provided. The nanofiber includes an average diameter from about 50 to about 1000 nm. A fibrous mat including a plurality of the nanofibers is also provided. A composite including a plurality of the nanofibers and a continuous matrix resin is also provided. A method of forming the nanofibers is also provided.Type: GrantFiled: August 28, 2019Date of Patent: March 19, 2024Inventors: Christopher M. Hoffman, Jr., Matthew P. Yeager, Morgana M. Trexler, Zhiyong Xia, Douglas A. Smith, Marcia W. Patchan
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Patent number: 11865771Abstract: Additive manufacturing processes, systems and three-dimensional articles include the formation of voxels and/or portions of three-dimensional articles with different properties relative to other voxels and/or portions. The processes generally include changing one or more laser beam parameters including power level, exposure time, hatch spacing, point distance, velocity, and energy density during the formation of selected voxels and/or portions of the three-dimensional articles. Also disclosed are processes that include an additive manufacturing process that provides localized secondary heat treatment of certain voxels and/or regions at a temperature below the melting point of the three-dimensional article but high enough to effect a localized property change.Type: GrantFiled: July 24, 2020Date of Patent: January 9, 2024Assignee: The Johns Hopkins UniversityInventors: Steven M. Storck, Morgana M. Trexler, Andrew M. Lennon, Ian D. McCue, Salahudin M. Nimer, Christopher M. Peitsch
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Publication number: 20230147160Abstract: A blunt force sensor array for application to a non-planar surface includes a flexible thin-film substrate, a plurality of force sensors secured to the flexible thin-film substrate proximate to a center measurement point, a strain gauge secured on the flexible thin-film substrate proximate to the center measurement point, and a sensor interface configured to connect to external measurement and control circuitry. The sensor interface may be electrically connected to each of the force sensors and the strain gauge via traces disposed on the flexible thin-film substrate. The flexibility and shape of the flexible thin-film substrate may permit the blunt force sensor array to be applied to the non-planar surface to detect forces and strains experienced by the non-planar surface in response to a blunt force event on the non-planar surface.Type: ApplicationFiled: January 31, 2022Publication date: May 11, 2023Inventors: Edwin B. Gienger, IV, John B. Helder, Morgana M. Trexler, Catherine M. Carneal, Christopher J. Dohopolski, James C. Gurganus, William H. Mermagen, Michael S. Horsmon
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Patent number: 11378475Abstract: A system provided herein may be configured to evaluate helmet performance. The system may include an impact assembly that includes a stationary post operably coupled to one or more stationary load cells and a plurality of modular headforms. Each modular headform may include a first side and a second side configured to lock together around the impact assembly and receive a helmet. The modular headform may determine a position of the helmet relative to the one or more stationary load cells. Furthermore, the one or more stationary load cells may be configured to measure impact force at a position where one of the plurality of the modular headforms are operably coupled to the impact assembly. Additionally, each of the plurality of modular headforms correspond to a position in relation to the impact assembly to measure the impact force to the one or more load cells at a predefined number of impact locations on the helmet to evaluate the performance of the helmet.Type: GrantFiled: January 8, 2019Date of Patent: July 5, 2022Assignee: The Johns Hopkins UniversityInventors: Morgana M. Trexler, Vanessa D. Alphonse, Matthew G. Bevan, Catherine M. Carneal, Quang T. Luong, Mark A. Athey, Kathleen M. Perrino, Andrew C. Merkle, Jeffrey M. Paulson, Steven M. Storck
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Publication number: 20210048359Abstract: A system provided herein may be configured to evaluate helmet performance. The system may include an impact assembly that includes a stationary post operably coupled to one or more stationary load cells and a plurality of modular headforms. Each modular headform may include a first side and a second side configured to lock together around the impact assembly and receive a helmet. The modular headform may determine a position of the helmet relative to the one or more stationary load cells. Furthermore, the one or more stationary load cells may be configured to measure impact force at a position where one of the plurality of the modular headforms are operably coupled to the impact assembly. Additionally, each of the plurality of modular headforms correspond to a position in relation to the impact assembly to measure the impact force to the one or more load cells at a predefined number of impact locations on the helmet to evaluate the performance of the helmet.Type: ApplicationFiled: January 8, 2019Publication date: February 18, 2021Inventors: Morgana M. Trexler, Vanessa D. Alphonse, Matthew G. Bevan, Catherine M. Carneal, Quang T. Luong, Mark A. Athey, Kathleen M. Perrino, Andrew C. Merkle, Jeffrey M. Paulson, Steven M. Storck
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Publication number: 20210026324Abstract: Additive manufacturing processes, systems and three-dimensional articles include the formation of voxels and/or portions of three-dimensional articles with different properties relative to other voxels and/or portions. The processes generally include changing one or more laser beam parameters including power level, exposure time, hatch spacing, point distance, velocity, and energy density during the formation of selected voxels and/or portions of the three-dimensional articles. Also disclosed are processes that include an additive manufacturing process that provides localized secondary heat treatment of certain voxels and/or regions at a temperature below the melting point of the three-dimensional article but high enough to effect a localized property change.Type: ApplicationFiled: July 24, 2020Publication date: January 28, 2021Inventors: Steven M. Storck, Morgana M. Trexler, Andrew M. Lennon, Ian D. McCue, Salahudin M. Nimer, Christopher M. Peitsch
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Patent number: 10801131Abstract: Example methods and articles of manufacture related to electrospun aramid nanofibers are provided. One example method may include forming a resultant solution by reacting a solution of aramids dissolved in a solvent with an electrophile. In this regard, the electrophile may perform a side chain substitution on the dissolved aramids. The example method may further include electrospinning the resultant solution to form an aramid nanofiber.Type: GrantFiled: March 24, 2017Date of Patent: October 13, 2020Assignee: The Johns Hopkins UniversityInventors: Matthew P. Yeager, Christopher M. Hoffman, Jr., Morgana M. Trexler, Zhiyong Xia
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Publication number: 20200224335Abstract: A nanofiber comprising a polyamide including at least one substituted phenyl group is provided. The nanofiber includes an average diameter from about 50 to about 1000 nm. A fibrous mat including a plurality of the nanofibers is also provided. A composite including a plurality of the nanofibers and a continuous matrix resin is also provided. A method of forming the nanofibers is also provided.Type: ApplicationFiled: August 28, 2019Publication date: July 16, 2020Inventors: Christopher M. Hoffman, JR., Matthew P. Yeager, Morgana M. Trexler, Zhiyong Xia, Douglas A. Smith, Marcia W. Patchan
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Patent number: 10376682Abstract: Implantable pressure-actuated systems to deliver a drug and/or other substance in response to a pressure difference between a system cavity and an exterior environment, and methods of fabrication and use. A pressure-rupturable membrane diaphragm may be tuned to rupture at a desired rupture threshold, rupture site, with a desired rupture pattern, and/or within a desired rupture time. Tuning may include material selection, thickness control, surface patterning, substrate support patterning. The cavity may be pressurized above or evacuated below the rupture threshold, and a diaphragm-protective layer may be provided to prevent premature rupture in an ambient environment and to dissipate within an implant environment. A drug delivery system may be implemented within a stent to release a substance upon a decrease in blood pressure. The cavity may include a thrombolytic drug to or other substance to treat a blood clot.Type: GrantFiled: October 11, 2016Date of Patent: August 13, 2019Assignee: The Johns Hopkins UniversityInventors: Chao-Wei Hwang, Hala J. Tomey, Jon R. Resar, Robert C. Matteson, III, George L. Coles, Jr., Jason J. Benkoski, Morgana M. Trexler
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Publication number: 20190201578Abstract: A biomaterial implant may include a collagen membrane. The biomaterial implant may further include a plurality of nanoparticles embedded in the collagen membrane. Furthermore, at least one nanoparticle of the plurality of nanoparticles may include a polymer shell and a bio-active therapeutic agent encapsulated by the polymer shell.Type: ApplicationFiled: October 26, 2018Publication date: July 4, 2019Inventors: Morgana M. Trexler, Xiomara Calderon-Colon, Leslie H. Hamilton, Min Zhao, Brian Reid, Julia B. Patrone, Lance M. Baird
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Publication number: 20190183807Abstract: A therapeutic agent release system may be provided. The therapeutic agent release system may include a plurality of polymer shells having a diameter of about 50-200 nanometers. The therapeutic agent release system may further include a bio-active therapeutic agent encapsulated by each of the polymer shells and being configured to heal an injury and increase a wound electric signal of the injury thereby increasing a healing rate of the injury. Each of the polymer shells may have a degradation profile configured to control a release of the bio-active therapeutic agent through the polymer shell to the injury over a predetermined period of time.Type: ApplicationFiled: October 19, 2018Publication date: June 20, 2019Inventors: Lance M. Baird, Xiomara Calderon-Colon, Morgana M. Trexler, Leslie H. Hamilton
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Publication number: 20170342599Abstract: Example methods and articles of manufacture related to electrospun aramid nanofibers are provided. One example method may include forming a resultant solution by reacting a solution of aramids dissolved in a solvent with an electrophile. In this regard, the electrophile may perform a side chain substitution on the dissolved aramids. The example method may further include electrospinning the resultant solution to form an aramid nanofiber.Type: ApplicationFiled: March 24, 2017Publication date: November 30, 2017Inventors: Matthew P. Yeager, Christopher M. Hoffman, JR., Morgana M. Trexler, Zhiyong Xia
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Publication number: 20170028181Abstract: Implantable pressure-actuated systems to deliver a drug and/or other substance in response to a pressure difference between a system cavity and an exterior environment, and methods of fabrication and use. A pressure-rupturable membrane diaphragm may be tuned to rupture at a desired rupture threshold, rupture site, with a desired rupture pattern, and/or within a desired rupture time. Tuning may include material selection, thickness control, surface patterning, substrate support patterning. The cavity may be pressurized above or evacuated below the rupture threshold, and a diaphragm-protective layer may be provided to prevent premature rupture in an ambient environment and to dissipate within an implant environment. A drug delivery system may be implemented within a stent to release a substance upon a decrease in blood pressure. The cavity may include a thrombolytic drug to or other substance to treat a blood clot.Type: ApplicationFiled: October 11, 2016Publication date: February 2, 2017Inventors: Chao-Wei Hwang, Hala J. Tomey, Jon R. Resar, Robert C. Matteson, III, George L. Coles, JR., Jason J. Benkoski, Morgana M. Trexler
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Patent number: 9504586Abstract: Implantable pressure-actuated systems to deliver a drug and/or other substance in response to a pressure difference between a system cavity and an exterior environment, and methods of fabrication and use. A pressure-rupturable membrane diaphragm may be tuned to rupture at a desired rupture threshold, rupture site, with a desired rupture pattern, and/or within a desired rupture time. Tuning may include material selection, thickness control, surface patterning, substrate support patterning. The cavity may be pressurized above or evacuated below the rupture threshold, and a diaphragm-protective layer may be provided to prevent premature rupture in an ambient environment and to dissipate within an implant environment. A drug delivery system may be implemented within a stent to release a substance upon a decrease in blood pressure. The cavity may include a thrombolytic drug to or other substance to treat a blood clot.Type: GrantFiled: February 13, 2014Date of Patent: November 29, 2016Assignee: The Johns Hopkins UniversityInventors: Chao-Wei Hwang, Hala J. Tomey, Jon R. Resar, Robert C. Matteson, III, George L. Coles, Jr., Jason J. Benkoski, Morgana M. Trexler
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Patent number: 9441080Abstract: The present invention provides cellulose hydrogels having one or more of the following properties: high water content, high transparency, high oxygen permeability, high biocompatibility, high tensile strength and desirable thermal stability. The present invention further provides a process for preparing a cellulose hydrogel comprising (i) a step of activating cellulose, in which the activating step comprises contacting the cellulose with a solvent to activate the cellulose for a time duration from about 2 hours to about 30 hours; (ii) substantially dissolving the activated cellulose to form a solution; and (iii) gelling the solution to form a gel, in which the gelling step comprises allowing the solution to gel in an environment comprising a relative humidity from about 30% to about 80% at 35° C.Type: GrantFiled: August 17, 2015Date of Patent: September 13, 2016Assignee: The Johns Hopkins UniversityInventors: Morgana M. Trexler, Jeffrey P. Maranchi, Jennifer L. Breidenich, Xiomara Calderon-Colon, Julia B. Patrone, Jennifer H. Elisseeff, Marcia W. Patchan, Jenna L. Graham, Oliver D. Schein
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Publication number: 20160106888Abstract: A method for preparing a collagen membrane includes applying an influence of an electric field to a collagen solution positioned between capacitor plates; adding a buffer solution to the acidic collagen solution to form a collagen gel; assembling a plurality of collagen gel layers; and performing a dehydrothermal cross-link on the plurality of collagen gel layers to form a cross-linked collagen membrane.Type: ApplicationFiled: October 21, 2015Publication date: April 21, 2016Inventors: Xiomara Calderon-Colon, Annie M. Dunn, Marcia W. Patchan, Morgana M. Trexler
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Patent number: 9314531Abstract: The present invention provides a wound healing composition comprising a biocompatible hydrogel membrane wherein the hydrogel membrane has one or more of the following properties: high water content, high transparency, high permeability, high biocompatibility, high tensile strength and an optimal thickness. The invention further provides methods of treating a wound in a subject in need thereof, comprising contacting the wound with a biocompatible cellulose hydrogel membrane of the invention.Type: GrantFiled: October 28, 2015Date of Patent: April 19, 2016Assignee: The Johns Hopkins UniversityInventors: Morgana M. Trexler, Jennifer H. Elisseeff, Daniel Mulreany, Qiongyu Guo, Jennifer L. Breidenich, Jeffrey P. Maranchi, Jenna L. Graham, Julia B. Patrone, Marcia W. Patchan, Xiomara Calderon-Colon
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Publication number: 20160074520Abstract: The present invention provides a wound healing composition comprising a biocompatible hydrogel membrane wherein the hydrogel membrane has one or more of the following properties: high water content, high transparency, high permeability, high biocompatibility, high tensile strength and an optimal thickness. The invention further provides methods of treating a wound in a subject in need thereof, comprising contacting the wound with a biocompatible cellulose hydrogel membrane of the invention.Type: ApplicationFiled: October 28, 2015Publication date: March 17, 2016Inventors: Morgana M. Trexler, Jennifer H. Elisseeff, Daniel Mulreany, Qiongyu Guo, Jennifer L. Breidenich, Jeffrey P. Maranchi, Jenna L. Graham, Julia B. Patrone, Marcia W. Patchan, Xiomara Calderon-Colon
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Publication number: 20150368408Abstract: The present invention provides cellulose hydrogels having one or more of the following properties: high water content, high transparency, high oxygen permeability, high biocompatibility, high tensile strength and desirable thermal stability. The present invention further provides a process for preparing a cellulose hydrogel comprising (i) a step of activating cellulose, in which the activating step comprises contacting the cellulose with a solvent to activate the cellulose for a time duration from about 2 hours to about 30 hours; (ii) substantially dissolving the activated cellulose to form a solution; and (iii) gelling the solution to form a gel, in which the gelling step comprises allowing the solution to gel in an environment comprising a relative humidity from about 30% to about 80% at 35° C.Type: ApplicationFiled: August 17, 2015Publication date: December 24, 2015Inventors: Morgana M. Trexler, Jeffrey P. Maranchi, Jennifer L. Breidenich, Xiomara Calderon-Colon, Julia B. Patrone, Jennifer H. Elisseeff, Marcia W. Patchan, Jenna L. Graham, Oliver D. Schein