Patents by Inventor J. Thomas Kocab
J. Thomas Kocab 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: 11643763Abstract: The present disclosure provides scalable nanotube fabrics and methods for controlling or otherwise adjusting the nanotube length distribution of a nanotube application solution in order to realize scalable nanotube fabrics. In one aspect of the present disclosure, one or more filtering operations are used to remove relatively long nanotube elements from a nanotube solution until nanotube length distribution of the nanotube solution conforms to a preselected or desired nanotube length distribution profile. In another aspect of the present disclosure, a sono-chemical cutting process is used to break up relatively long nanotube elements within a nanotube application solution into relatively short nanotube elements to realize a pre-selected or desired nanotube length distribution profile.Type: GrantFiled: May 5, 2020Date of Patent: May 9, 2023Assignee: ZEON CORPORATIONInventors: Rahul Sen, Billy Smith, J. Thomas Kocab, Ramesh Sivarajan, Peter Sites, Thomas Rueckes, David A. Roberts
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Patent number: 11072714Abstract: The present disclosure provides a nanotube solution being treated with a molecular additive, a nanotube film having enhanced adhesion property due to the treatment of the molecular additive, and methods for forming the nanotube solution and the nanotube film. The nanotube solution includes a liquid medium, nanotubes in the liquid medium, and a molecular additive in the liquid medium, wherein the molecular additive includes molecules that provide source elements for forming a group IV oxide within the nanotube solution. The molecular additive can introduce silicon (Si) and/or germanium (Ge) in the liquid medium, such that nominal silicon and/or germanium concentrations of the nanotube solution ranges from about 5 ppm to about 60 ppm.Type: GrantFiled: April 24, 2017Date of Patent: July 27, 2021Assignee: Nantero, Inc.Inventors: David A. Roberts, Rahul Sen, Peter Sites, J. Thomas Kocab, Feng Gu
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Patent number: 10773960Abstract: A method for controlling density, porosity and/or gap size within a nanotube fabric layer is disclosed. In one aspect, this can be accomplished by controlling the degree of rafting in a nanotube fabric. In one aspect, the method includes adjusting the concentration of individual nanotube elements dispersed in a nanotube application solution. A high concentration of individual nanotube elements will tend to promote rafting in a nanotube fabric layer formed using such a nanotube application solution, whereas a lower concentration will tend to discourage rafting. In another aspect, the method includes adjusting the concentration of ionic particles dispersed in a nanotube application solution. A low concentration of ionic particles will tend to promote rafting in a nanotube fabric layer formed using such a nanotube application solution, whereas a higher concentration will tend to discourage rafting. In other aspects, both concentration parameters are adjusted.Type: GrantFiled: April 10, 2017Date of Patent: September 15, 2020Assignee: Nantero, Inc.Inventors: Rahul Sen, J. Thomas Kocab, Feng Gu
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Publication number: 20200262701Abstract: The present disclosure provides scalable nanotube fabrics and methods for controlling or otherwise adjusting the nanotube length distribution of a nanotube application solution in order to realize scalable nanotube fabrics. In one aspect of the present disclosure, one or more filtering operations are used to remove relatively long nanotube elements from a nanotube solution until nanotube length distribution of the nanotube solution conforms to a preselected or desired nanotube length distribution profile. In another aspect of the present disclosure, a sono-chemical cutting process is used to break up relatively long nanotube elements within a nanotube application solution into relatively short nanotube elements to realize a pre-selected or desired nanotube length distribution profile.Type: ApplicationFiled: May 5, 2020Publication date: August 20, 2020Inventors: Rahul SEN, Billy SMITH, J. Thomas KOCAB, Ramesh SIVARAJAN, Peter SITES, Thomas RUECKES, David A. ROBERTS
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Patent number: 10654718Abstract: The present disclosure provides scalable nanotube fabrics and methods for controlling or otherwise adjusting the nanotube length distribution of a nanotube application solution in order to realize scalable nanotube fabrics. In one aspect of the present disclosure, one or more filtering operations are used to remove relatively long nanotube elements from a nanotube solution until nanotube length distribution of the nanotube solution conforms to a preselected or desired nanotube length distribution profile. In another aspect of the present disclosure, a sono-chemical cutting process is used to break up relatively long nanotube elements within a nanotube application solution into relatively short nanotube elements to realize a pre-selected or desired nanotube length distribution profile.Type: GrantFiled: September 20, 2013Date of Patent: May 19, 2020Assignee: Nantero, Inc.Inventors: Rahul Sen, Billy Smith, J. Thomas Kocab, Ramesh Sivarajan, Peter Sites, Thomas Rueckes, David A. Roberts
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Patent number: 10181569Abstract: An improved switching material for forming a composite article over a substrate is disclosed. A first volume of nanotubes is combined with a second volume of nanoscopic particles in a predefined ration relative to the first volume of nanotubes to form a mixture. This mixture can then be deposited over a substrate as a relatively thick composite article via a spin coating process. The composite article may possess improved switching properties over that of a nanotube-only switching article. A method for forming substantially uniform nanoscopic particles of carbon, which contains one or more allotropes of carbon, is also disclosed.Type: GrantFiled: September 1, 2017Date of Patent: January 15, 2019Assignee: Nantero, Inc.Inventors: Eliodor G. Ghenciu, Thomas Rueckes, Thierry Yao, J. Thomas Kocab
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Patent number: 10069072Abstract: Solutions of carbon nanotubes and methods for purifying the solutions are provided. The methods include mixing, for example, at least one complexing agents, at least one ionic species, and/or at least one buffer oxide etch (BOE) with a liquid medium containing carbon nanotubes and different types of contaminants, such as metal impurities, amorphous carbon, and/or silica particles, and performing a filtration process to the liquid medium so as to remove or reduce the contaminants in the liquid medium. As a result, carbon nanotube solutions of low contaminants are produced. In some embodiments, the solutions of this disclosure include a high concentration of carbon nanotubes and are substantially free from metal, amorphous carbon, and/or silica impurities.Type: GrantFiled: September 20, 2011Date of Patent: September 4, 2018Assignee: Nantero, Inc.Inventors: David A. Roberts, Rahul Sen, J. Thomas Kocab, Billy Smith, Feng Gu
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Publication number: 20180013084Abstract: An improved switching material for forming a composite article over a substrate is disclosed. A first volume of nanotubes is combined with a second volume of nanoscopic particles in a predefined ration relative to the first volume of nanotubes to form a mixture. This mixture can then be deposited over a substrate as a relatively thick composite article via a spin coating process. The composite article may possess improved switching properties over that of a nanotube-only switching article. A method for forming substantially uniform nanoscopic particles of carbon, which contains one or more allotropes of carbon, is also disclosed.Type: ApplicationFiled: September 1, 2017Publication date: January 11, 2018Inventors: Eliodor G. Ghenciu, Thomas Rueckes, Thierry Yao, J. Thomas Kocab
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Patent number: 9755170Abstract: An improved switching material for forming a composite article over a substrate is disclosed. A first volume of nanotubes is combined with a second volume of nanoscopic particles in a predefined ration relative to the first volume of nanotubes to form a mixture. This mixture can then be deposited over a substrate as a relatively thick composite article via a spin coating process. The composite article may possess improved switching properties over that of a nanotube-only switching article. A method for forming substantially uniform nanoscopic particles of carbon, which contains one or more allotropes of carbon, is also disclosed.Type: GrantFiled: April 11, 2016Date of Patent: September 5, 2017Assignee: Nantero, Inc.Inventors: Eliodor G. Ghenciu, Thomas Rueckes, Thierry Yao, J. Thomas Kocab
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Publication number: 20170246561Abstract: The present disclosure provides methods for removing defects nanotube application solutions and providing low defect, highly uniform nanotube fabrics. In one aspect, a degassing process is performed on a suspension of nanotubes to remove air bubbles present in the solution. In another aspect, a continuous flow centrifugation (CFC) process is used to remove small scale defects from the solution. In another aspect, a depth filter is used to remove large scale defects from the solution. According to the present disclosure, these three methods can be used alone or combined to realize a low defect nanotube application solutions and fabrics.Type: ApplicationFiled: May 15, 2017Publication date: August 31, 2017Applicant: Nantero, Inc.Inventors: J. THOMAS KOCAB, Thomas Bengtson, Sanjin Hosic, Rahul Sen, Billy Smith, David A. Roberts, Peter Sites
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Publication number: 20170226352Abstract: The present disclosure provides a nanotube solution being treated with a molecular additive, a nanotube film having enhanced adhesion property due to the treatment of the molecular additive, and methods for forming the nanotube solution and the nanotube film. The nanotube solution includes a liquid medium, nanotubes in the liquid medium, and a molecular additive in the liquid medium, wherein the molecular additive includes molecules that provide source elements for forming a group IV oxide within the nanotube solution. The molecular additive can introduce silicon (Si) and/or germanium (Ge) in the liquid medium, such that nominal silicon and/or germanium concentrations of the nanotube solution ranges from about 5 ppm to about 60 ppm.Type: ApplicationFiled: April 24, 2017Publication date: August 10, 2017Inventors: David A. Roberts, Rahul Sen, Peter Sites, J. Thomas Kocab, Feng Gu
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Publication number: 20170210626Abstract: A method for controlling density, porosity and/or gap size within a nanotube fabric layer is disclosed. In one aspect, this can be accomplished by controlling the degree of rafting in a nanotube fabric. In one aspect, the method includes adjusting the concentration of individual nanotube elements dispersed in a nanotube application solution. A high concentration of individual nanotube elements will tend to promote rafting in a nanotube fabric layer formed using such a nanotube application solution, whereas a lower concentration will tend to discourage rafting. In another aspect, the method includes adjusting the concentration of ionic particles dispersed in a nanotube application solution. A low concentration of ionic particles will tend to promote rafting in a nanotube fabric layer formed using such a nanotube application solution, whereas a higher concentration will tend to discourage rafting. In other aspects, both concentration parameters are adjusted.Type: ApplicationFiled: April 10, 2017Publication date: July 27, 2017Inventors: Rahul Sen, J. Thomas Kocab, Feng Gu
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Patent number: 9650732Abstract: The present disclosure provides methods for removing defects nanotube application solutions and providing low defect, highly uniform nanotube fabrics. In one aspect, a degassing process is performed on a suspension of nanotubes to remove air bubbles present in the solution. In another aspect, a continuous flow centrifugation (CFC) process is used to remove small scale defects from the solution. In another aspect, a depth filter is used to remove large scale defects from the solution. According to the present disclosure, these three methods can be used alone or combined to realize a low defect nanotube application solutions and fabrics.Type: GrantFiled: April 30, 2014Date of Patent: May 16, 2017Assignee: Nantero Inc.Inventors: J. Thomas Kocab, Thomas R. Bengtson, Sanjin Hosic, Rahul Sen, Billy Smith, David A. Roberts, Peter Sites
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Patent number: 9634251Abstract: The present disclosure provides a nanotube solution being treated with a molecular additive, a nanotube film having enhanced adhesion property due to the treatment of the molecular additive, and methods for forming the nanotube solution and the nanotube film. The nanotube solution includes a liquid medium, nanotubes in the liquid medium, and a molecular additive in the liquid medium, wherein the molecular additive includes molecules that provide source elements for forming a group IV oxide within the nanotube solution. The molecular additive can introduce silicon (Si) and/or germanium (Ge) in the liquid medium, such that nominal silicon and/or germanium concentrations of the nanotube solution ranges from about 5 ppm to about 60 ppm.Type: GrantFiled: March 9, 2012Date of Patent: April 25, 2017Assignee: Nantero Inc.Inventors: David A. Roberts, Rahul Sen, Peter Sites, J. Thomas Kocab, Billy Smith, Feng Gu
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Patent number: 9617151Abstract: A method for controlling density, porosity and/or gap size within a nanotube fabric layer is disclosed. In one aspect, this can be accomplished by controlling the degree of rafting in a nanotube fabric. In one aspect, the method includes adjusting the concentration of individual nanotube elements dispersed in a nanotube application solution. A high concentration of individual nanotube elements will tend to promote rafting in a nanotube fabric layer formed using such a nanotube application solution, whereas a lower concentration will tend to discourage rafting. In another aspect, the method includes adjusting the concentration of ionic particles dispersed in a nanotube application solution. A low concentration of ionic particles will tend to promote rafting in a nanotube fabric layer formed using such a nanotube application solution, whereas a higher concentration will tend to discourage rafting. In other aspects, both concentration parameters are adjusted.Type: GrantFiled: February 14, 2011Date of Patent: April 11, 2017Assignee: Nantero Inc.Inventors: Rahul Sen, J. Thomas Kocab, Feng Gu
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Publication number: 20160226008Abstract: An improved switching material for forming a composite article over a substrate is disclosed. A first volume of nanotubes is combined with a second volume of nanoscopic particles in a predefined ration relative to the first volume of nanotubes to form a mixture. This mixture can then be deposited over a substrate as a relatively thick composite article via a spin coating process. The composite article may possess improved switching properties over that of a nanotube-only switching article. A method for forming substantially uniform nanoscopic particles of carbon, which contains one or more allotropes of carbon, is also disclosed.Type: ApplicationFiled: April 11, 2016Publication date: August 4, 2016Inventors: Eliodor G. GHENCIU, Thomas RUECKES, Thierry YAO, J. Thomas KOCAB
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Patent number: 9337423Abstract: An improved switching material for forming a composite article over a substrate is disclosed. A first volume of nanotubes is combined with a second volume of nanoscopic particles in a predefined ration relative to the first volume of nanotubes to form a mixture. This mixture can then be deposited over a substrate as a relatively thick composite article via a spin coating process. The composite article may possess improved switching properties over that of a nanotube-only switching article. A method for forming substantially uniform nanoscopic particles of carbon, which contains one or more allotropes of carbon, is also disclosed.Type: GrantFiled: February 27, 2015Date of Patent: May 10, 2016Assignee: Nantero Inc.Inventors: Eliodor G. Ghenciu, Thomas Rueckes, Thierry Yao, J. Thomas Kocab
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Publication number: 20150188049Abstract: An improved switching material for forming a composite article over a substrate is disclosed. A first volume of nanotubes is combined with a second volume of nanoscopic particles in a predefined ration relative to the first volume of nanotubes to form a mixture. This mixture can then be deposited over a substrate as a relatively thick composite article via a spin coating process. The composite article may possess improved switching properties over that of a nanotube-only switching article. A method for forming substantially uniform nanoscopic particles of carbon, which contains one or more allotropes of carbon, is also disclosed.Type: ApplicationFiled: February 27, 2015Publication date: July 2, 2015Inventors: Eliodor G. Ghenciu, Thomas Rueckes, Thierry Yao, J. Thomas Kocab
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Publication number: 20150086771Abstract: The present disclosure provides scalable nanotube fabrics and methods for controlling or otherwise adjusting the nanotube length distribution of a nanotube application solution in order to realize scalable nanotube fabrics. In one aspect of the present disclosure, one or more filtering operations are used to remove relatively long nanotube elements from a nanotube solution until nanotube length distribution of the nanotube solution conforms to a preselected or desired nanotube length distribution profile. In another aspect of the present disclosure, a sono-chemical cutting process is used to break up relatively long nanotube elements within a nanotube application solution into relatively short nanotube elements to realize a pre-selected or desired nanotube length distribution profile.Type: ApplicationFiled: September 20, 2013Publication date: March 26, 2015Applicant: NANTERO INC.Inventors: Rahul SEN, Billy SMITH, J. Thomas KOCAB, Ramesh SIVARAJAN, Peter SITES, Thomas RUECKES, David A. ROBERTS
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Patent number: 8969142Abstract: An improved switching material for forming a composite article over a substrate is disclosed. A first volume of nanotubes is combined with a second volume of nanoscopic particles in a predefined ration relative to the first volume of nanotubes to form a mixture. This mixture can then be deposited over a substrate as a relatively thick composite article via a spin coating process. The composite article may possess improved switching properties over that of a nanotube-only switching article. A method for forming substantially uniform nanoscopic particles of carbon, which contains one or more allotropes of carbon, is also disclosed.Type: GrantFiled: October 11, 2013Date of Patent: March 3, 2015Assignee: Nantero Inc.Inventors: Eliodor G. Ghenciu, Thomas Rueckes, Thierry Yao, J. Thomas Kocab