Patents by Inventor Vesselin N. Shanov
Vesselin N. Shanov 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: 11730857Abstract: A biomedical implant (16, 18) is formed from magnesium (Mg) single crystal (10). The biomedical implant (16, 18) may be biodegradable. The biomedical implant (16, 18) may be post treated to control the mechanical properties and/or corrosion rate thereof said Mg single crystal (10) without changing the chemical composition thereof. A method of making a Mg single crystal (10) for biomedical applications includes filling a single crucible (12) with more than one chamber with polycrystalline Mg, melting at least a portion of said polycrystalline Mg, and forming more than one Mg single crystal (10) using directional solidification.Type: GrantFiled: March 9, 2021Date of Patent: August 22, 2023Assignee: University of CincinnatiInventors: Vesselin N. Shanov, Vibhor Chaswal, Pravahan Salunke, Madhura Joshi, Guangqi Zhang, Mark J. Schulz, Sergey N. Yarmolenko, Doug Nienaber
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Patent number: 11696369Abstract: Disclosed are methods of making low voltage joule heating elements (10, 40, 50) from carbon nanotubes (CNT) (32). In an embodiment, the heating element (10) includes layers (12) of aligned thin film CNTs. In another embodiment, the heating element (40) includes CNTs (32) dispersed in a polymer (34) to form a CNT polymer composite (30). In another embodiment, the heating element (50) includes CNT thread (52) stitched to a fabric (54). Each embodiment further includes a pair of electrodes (20, 22, 42, 44, 56, 58) that are configured to be couple to a source of electricity. Embodiments further include an encapsulating film (24, 46) over at least the heating element. The heating elements (10, 40, 50) produced by the processes disclosed herein are lightweight and highly efficient and suitable for many uses including incorporation into objects such as clothing and footwear.Type: GrantFiled: May 9, 2018Date of Patent: July 4, 2023Assignee: University of CincinnatiInventors: Noe Alvarez Torrico, Ryan Noga, Seyram Gbordzoe, Vesselin N. Shanov
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Publication number: 20220296949Abstract: The present invention relates to a carbon-based material for use in a piece of personal protective equipment and an air filtration system. The carbon-based material may function as a filter by providing a tortuous path for a pathogen to traverse. The carbon-based material may be used as a carbon-based heater that can reach a pathogen inactivation threshold temperature to enable heat inactivation of one or more pathogens. In embodiments where a piece of personal protective equipment includes a carbon-based heater, an insulating layer may be included to attenuate the temperature generated by the carbon-based heater from the face of a user.Type: ApplicationFiled: March 21, 2022Publication date: September 22, 2022Inventors: Vesselin N. Shanov, Soryong Chae, Yanbo Fang, Hyunsik Kim, Yoontaek Oh, Hung Nguyen
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Publication number: 20210236688Abstract: Provided herein is a prosthetic heart valve device including a biocompatible and biodegradable metal frame comprising a proximal end, a distal end, and a sidewall therebetween, the sidewall having a plurality of openings therethrough. The device further includes a biocompatible and biodegradable polymeric heart valve having an annular portion attached at least one contact point to the proximal end of the frame and at least one leaflet attached to and extending distally from the annular portion.Type: ApplicationFiled: April 25, 2019Publication date: August 5, 2021Inventors: William R. Wagner, Antonio D'Amore, Vesselin N. Shanov
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Publication number: 20210196854Abstract: A biomedical implant (16, 18) is formed from magnesium (Mg) single crystal (10). The biomedical implant (16, 18) may be biodegradable. The biomedical implant (16, 18) may be post treated to control the mechanical properties and/or corrosion rate thereof said Mg single crystal (10) without changing the chemical composition thereof. A method of making a Mg single crystal (10) for biomedical applications includes filling a single crucible (12) with more than one chamber with polycrystalline Mg, melting at least a portion of said polycrystalline Mg, and forming more than one Mg single crystal (10) using directional solidification.Type: ApplicationFiled: March 9, 2021Publication date: July 1, 2021Inventors: Vesselin N. Shanov, Vibhor Chaswal, Pravahan Salunke, Madhura Joshi, Guangqi Zhang, Mark J. Schulz, Sergey N. Yarmolenko, Doug Nienaber
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Publication number: 20200107408Abstract: Disclosed are methods of making low voltage joule heating elements (10, 40, 50) from carbon nanotubes (CNT) (32). In an embodiment, the heating element (10) includes layers (12) of aligned thin film CNTs. In another embodiment, the heating element (40) includes CNTs (32) dispersed in a polymer (34) to form a CNT polymer composite (30). In another embodiment, the heating element (50) includes CNT thread (52) stitched to a fabric (54). Each embodiment further includes a pair of electrodes (20, 22, 42, 44, 56, 58) that are configured to be couple to a source of electricity. Embodiments further include an encapsulating film (24, 46) over at least the heating element. The heating elements (10, 40, 50) produced by the processes disclosed herein are lightweight and highly efficient and suitable for many uses including incorporation into objects such as clothing and footwear.Type: ApplicationFiled: May 9, 2018Publication date: April 2, 2020Inventors: Noe Alvarez Torrico, Ryan Noga, Seyram Gbordzoe, Vesselin N. Shanov
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Patent number: 10265205Abstract: Methods for making a magnesium biodegradable stent for medical implant applications, using magnesium foil or pure magnesium or magnesium alloys that are biodegradable and performing a lithographic technique to configure the features and dimensions of the magnesium foil, and rolling the magnesium foil to form a cylinder.Type: GrantFiled: April 25, 2017Date of Patent: April 23, 2019Assignee: UNIVERSITY OF CINCINNATIInventors: Vesselin N. Shanov, Prabir Roy-Chaudhury, Mark J. Schulz, Zhangzhang Yin, Begona Campos-Naciff, Yang Wang
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Patent number: 9845243Abstract: A method of forming a carbon nanotube array substrate is disclosed. One embodiment comprises depositing a composite catalyst layer on the substrate, oxidizing the composite catalyst layer, reducing the oxidized composite catalyst layer, and growing the array on the composite catalyst layer. The composite catalyst layer may comprise a group VIII element and a non-catalytic element deposited onto the substrate from an alloy. In another embodiment, the composite catalyst layer comprises alternating layers of iron and a lanthanide, preferably gadolinium or lanthanum. The composite catalyst layer may be reused to grow multiple carbon nanotube arrays without additional processing of the substrate. The method may comprise bulk synthesis by forming carbon nanotubes on a plurality of particulate substrates having a composite catalyst layer comprising the group VIII element and the non-catalytic element. In another embodiment, the composite catalyst layer is deposited on both sides of the substrate.Type: GrantFiled: June 16, 2014Date of Patent: December 19, 2017Inventors: Vesselin N. Shanov, Andrew Gorton, Yeo-Heung Yun, Mark J. Schulz
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Publication number: 20170358400Abstract: Described are processes for making graphene pellet (GP) with a three-dimensional structure. The process includes forming a nickel pellet from nickel powder to function as a catalyst for graphene growth, exposing the nickel pellet to a hydrocarbon under conditions sufficient to grow graphene, and etching nickel from graphene with an acid resulting in a graphene pellet. Also described is a process for making a graphene paper from the graphene pellet comprising applying a compression force to the graphene pellet sufficient to compress the pellet. Also described is a method for forming a graphene pellet composite useful as an electrode.Type: ApplicationFiled: June 9, 2017Publication date: December 14, 2017Inventors: Noe Alvarez, Derek DeArmond, Rachit Malik, Vesselin N. Shanov, Lu Zhang
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Patent number: 9796121Abstract: A method of forming an array of aligned, uniform-length carbon nanotubes on a planar surface of a substrate employing a composite catalyst layer of iron and cobalt. The carbon nanotubes have visible length and are useful for producing spun threads of carbon nanotubes having improved spinability and mechanical and electrical properties.Type: GrantFiled: April 26, 2013Date of Patent: October 24, 2017Assignee: University of CincinnatiInventors: Vesselin N. Shanov, Mark J. Schulz
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Publication number: 20170281377Abstract: Methods for making a magnesium biodegradable stent for medical implant applications, using magnesium foil or pure magnesium or magnesium alloys that are biodegradable and performing a lithographic technique to configure the features and dimensions of the magnesium foil, and rolling the magnesium foil to form a cylinder.Type: ApplicationFiled: April 25, 2017Publication date: October 5, 2017Applicant: UNIVERSITY OF CINCINNATIInventors: VESSELIN N. SHANOV, PRABIR ROY-CHAUDHURY, MARK J. SCHULZ, ZHANGZHANG YIN, BEGONA CAMPOS-NACIFF, YANG WANG
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Publication number: 20170239386Abstract: A biomedical implant (16, 18) is formed from magnesium (Mg) single crystal (10). The biomedical implant (16, 18) may be biodegradable. The biomedical implant (16, 18) may be post treated to control the mechanical properties and/or corrosion rate thereof said Mg single crystal (10) without changing the chemical composition thereof. A method of making a Mg single crystal (10) for biomedical applications includes filling a single crucible (12) with more than one chamber with polycrystalline Mg, melting at least a portion of said polycrystalline Mg, and forming more than one Mg single crystal (10) using directional solidification.Type: ApplicationFiled: August 18, 2015Publication date: August 24, 2017Inventors: Vesselin N. Shanov, Vibhor Chaswal, Pravahan Salunke, Madhura Joshi, Guangqi Zhang, Mark J. Schulz, Sergey N. Yarmolenko, Doug Nienaber
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Patent number: 9655752Abstract: Methods for making a magnesium biodegradable stent for medical implant applications, using magnesium foil or pure magnesium or magnesium alloys that are biodegradable and performing a lithographic technique to configure the features and dimensions of the magnesium foil, and rolling the magnesium foil to form a cylinder.Type: GrantFiled: March 15, 2013Date of Patent: May 23, 2017Assignee: University of CincinnatiInventors: Vesselin N. Shanov, Prabir Roy-Chaudhury, Mark J. Schulz, Zhangzhang Yin, Begona Campos-Naciff, Yang Wang
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Publication number: 20150137414Abstract: A method of forming an array of aligned, uniform-length carbon nanotubes on a planar surface of a substrate employing a composite catalyst layer of iron and cobalt. The carbon nanotubes have visible length and are useful for producing spun threads of carbon nanotubes having improved spinability and mechanical and electrical properties.Type: ApplicationFiled: April 26, 2013Publication date: May 21, 2015Inventors: Vesselin N. Shanov, Mark J. Schulz
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Publication number: 20150105854Abstract: Methods for making a magnesium biodegradable stent for medical implant applications, using magnesium foil or pure magnesium or magnesium alloys that are biodegradable and performing a lithographic technique to configure the features and dimensions of the magnesium foil, and rolling the magnesium foil to form a cylinder.Type: ApplicationFiled: March 15, 2013Publication date: April 16, 2015Inventors: Vesselin N. Shanov, Prabir Roy-Chaudhury, Mark J. Schulz, Zhangzhang Yin, Begona Campos-Naciff, Yang Wang
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Publication number: 20140295098Abstract: A method of forming a carbon nanotube array substrate is disclosed. One embodiment comprises depositing a composite catalyst layer on the substrate, oxidizing the composite catalyst layer, reducing the oxidized composite catalyst layer, and growing the array on the composite catalyst layer. The composite catalyst layer may comprise a group VIII element and a non-catalytic element deposited onto the substrate from an alloy. In another embodiment, the composite catalyst layer comprises alternating layers of iron and a lanthanide, preferably gadolinium or lanthanum. The composite catalyst layer may be reused to grow multiple carbon nanotube arrays without additional processing of the substrate. The method may comprise bulk synthesis by forming carbon nanotubes on a plurality of particulate substrates having a composite catalyst layer comprising the group VIII element and the non-catalytic element. In another embodiment, the composite catalyst layer is deposited on both sides of the substrate.Type: ApplicationFiled: June 16, 2014Publication date: October 2, 2014Inventors: Vesselin N. SHANOV, Andrew Gorton, Yeo-Heung Yun, Mark J. Schulz
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Patent number: 8753602Abstract: A method of forming a carbon nanotube array on a substrate is disclosed. One embodiment of the method comprises depositing a composite catalyst layer on the substrate, oxidizing the composite catalyst layer, reducing the oxidized composite catalyst layer, and growing the array on the composite catalyst layer. The composite catalyst layer may comprise a group VIII element and a non-catalytic element deposited onto the substrate from an alloy. In another embodiment, the composite catalyst layer comprises alternating layers of iron and a lanthanide, preferably gadolinium or lanthanum. The composite catalyst layer may be reused to grow multiple carbon nanotube arrays without additional processing of the substrate. The method may comprise bulk synthesis by forming carbon nanotubes on a plurality of particulate substrates having a composite catalyst layer comprising the group VIII element and the non-catalytic element. In another embodiment, the composite catalyst layer is deposited on both sides of the substrate.Type: GrantFiled: April 11, 2007Date of Patent: June 17, 2014Assignee: University of CincinnatiInventors: Vesselin N. Shanov, Andrew Gorton, Yeo-Heung Yun, Mark J. Schulz
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Publication number: 20130316172Abstract: A method using of electrostatic spraying or dispersing processes and techniques for depositing a particulate material onto the outside surfaces of carbon nanotubes (CNTs) and CNT elongates consisting of the CNTs. The particulate material can include either or both particles and droplets, and the material can be an element, compound or composition, including polymers and thermoplastics. The particulate material is dispersed and induced with a static charge, while the CNT elongate is grounded.Type: ApplicationFiled: February 1, 2012Publication date: November 28, 2013Applicant: GENERAL NANO LLCInventors: Vesselin N. Shanov, Mark J. Schulz, Gary Martin Conroy