Patents by Inventor Charles E. Holland
Charles E. Holland 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: 11717786Abstract: The current disclosure provides systems and methods for multiple beds undergoing a feed step at the same time with the same feed flow rate and multiple beds undergoing a light reflux step at the same time with the same light reflux flow rate to process a gas stream in a multi-bed, multi-unit vacuum swing adsorption (VSA) process using reasonably sized beds.Type: GrantFiled: March 8, 2021Date of Patent: August 8, 2023Assignee: University of South CarolinaInventors: James A. Ritter, Armin D. Ebner, Charles E. Holland
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Publication number: 20210346837Abstract: The current disclosure provides systems and methods for multiple beds undergoing a feed step at the same time with the same feed flow rate and multiple beds undergoing a light reflux step at the same time with the same light reflux flow rate to process a gas stream in a multi-bed, multi-unit vacuum swing adsorption (VSA) process using reasonably sized beds.Type: ApplicationFiled: March 8, 2021Publication date: November 11, 2021Applicant: University of South CarolinaInventors: James A. Ritter, Armin D. Ebner, Charles E. Holland
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Patent number: 11148092Abstract: Methods and systems for capture of CO2 from a hydrated gaseous stream are described. Systems can be utilized for direct air capture of CO2 and incorporate a low energy temperature-vacuum swing adsorption (TVSA) process. A TVSA process can include a multi-step CO2 capture bed regeneration process that includes depressurization of the bed, heating of the bed, venting and purging of the bed, and cooling of the bed. Multiple beds can be cycled between CO2 capture and regeneration, during which captured CO2 is recovered. Off-gas from a CO2 capture bed can be used in regenerating a parallel bed for increased efficiency.Type: GrantFiled: June 27, 2019Date of Patent: October 19, 2021Assignee: University of South CarolinaInventors: James A. Ritter, Armin D. Ebner, Charles E. Holland
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Publication number: 20200001225Abstract: Methods and systems for capture of CO2 from a hydrated gaseous stream are described. Systems can be utilized for direct air capture of CO2 and incorporate a low energy temperature-vacuum swing adsorption (TVSA) process. A TVSA process can include a multi-step CO2 capture bed regeneration process that includes depressurization of the bed, heating of the bed, venting and purging of the bed, and cooling of the bed. Multiple beds can be cycled between CO2 capture and regeneration, during which captured CO2 is recovered. Off-gas from a CO2 capture bed can be used in regenerating a parallel bed for increased efficiency.Type: ApplicationFiled: June 27, 2019Publication date: January 2, 2020Inventors: James A. Ritter, Armin D. Ebner, Charles E. Holland
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Patent number: 9574276Abstract: In one embodiment of the present disclosure, a process for electrochemical hydrogen production is provided. The process includes providing an electrochemical cell with an anode side including an anode, a cathode side including a cathode, and a membrane separating the anode side from the cathode side. The process further includes feeding molecules of at least one gaseous reactant to the anode, oxidizing one or more molecules of the gaseous reactant at the anode to produce a gas product and protons, passing the protons through the membrane to the cathode, and reducing the protons at the cathode to form hydrogen gas.Type: GrantFiled: May 12, 2015Date of Patent: February 21, 2017Assignee: University of South CarolinaInventors: John W. Weidner, Charles E. Holland
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Publication number: 20150315713Abstract: In one embodiment of the present disclosure, a process for electrochemical hydrogen production is provided. The process includes providing an electrochemical cell with an anode side including an anode, a cathode side including a cathode, and a membrane separating the anode side from the cathode side. The process further includes feeding molecules of at least one gaseous reactant to the anode, oxidizing one or more molecules of the gaseous reactant at the anode to produce a gas product and protons, passing the protons through the membrane to the cathode, and reducing the protons at the cathode to form hydrogen gas.Type: ApplicationFiled: May 12, 2015Publication date: November 5, 2015Inventors: John W. Weidner, Charles E. Holland
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Patent number: 9057136Abstract: In one embodiment of the present disclosure, a process for electrochemical hydrogen production is provided. The process includes providing an electrochemical cell with an anode side including an anode, a cathode side including a cathode, and a membrane separating the anode side from the cathode side. The process further includes feeding molecules of at least one gaseous reactant to the anode, oxidizing one or more molecules of the gaseous reactant at the anode to produce a gas product and protons, passing the protons through the membrane to the cathode, and reducing the protons at the cathode to form hydrogen gas.Type: GrantFiled: April 12, 2006Date of Patent: June 16, 2015Assignee: University of South CarolinaInventors: John W. Weidner, Charles E. Holland
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Patent number: 8153554Abstract: In accordance with the present disclosure, a process for synthesis of a complex hydride material for hydrogen storage is provided. The process includes mixing a borohydride with at least one additive agent and at least one catalyst and heating the mixture at a temperature of less than about 600° C. and a pressure of H2 gas to form a complex hydride material. The complex hydride material comprises MAlxByHz, wherein M is an alkali metal or group IIA metal, Al is the element aluminum, x is any number from 0 to 1, B is the element boron, y is a number from 0 to 13, and z is a number from 4 to 57 with the additive agent and catalyst still being present. The complex hydride material is capable of cyclic dehydrogenation and rehydrogenation and has a hydrogen capacity of at least about 4 weight percent.Type: GrantFiled: November 15, 2007Date of Patent: April 10, 2012Assignee: University of South CarolinaInventors: James A. Ritter, Tao Wang, Armin D. Ebner, Charles E. Holland
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Publication number: 20110218099Abstract: In accordance with the present disclosure, a process for synthesis of a complex hydride material for hydrogen storage is provided. The process includes mixing a borohydride with at least one additive agent and at least one catalyst and heating the mixture at a temperature of less than about 600° C. and a pressure of H2 gas to form a complex hydride material. The complex hydride material comprises MAlxByHz, wherein M is an alkali metal or group IIA metal, Al is the element aluminum, x is any number from 0 to 1, B is the element boron, y is a number from 0 to 13, and z is a number from 4 to 57 with the additive agent and catalyst still being present. The complex hydride material is capable of cyclic dehydrogenation and rehydrogenation and has a hydrogen capacity of at least about 4 weight percent.Type: ApplicationFiled: November 15, 2007Publication date: September 8, 2011Applicant: UNIVERSITY OF SOUTH CAROLINAInventors: James A. Ritter, Tao Wang, Armin D. Ebner, Charles E. Holland
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Publication number: 20090142258Abstract: In one embodiment of the present disclosure, a process for cyclic dehydrogenation and rehydrogenation of hydrogen storage materials is provided. The process includes liberating hydrogen from a hydrogen storage material comprising hydrogen atoms chemically bonded to one or more elements to form a dehydrogenated material and contacting the dehydrogenated material with a solvent in the presence of hydrogen gas such that the solvent forms a reversible complex with rehydrogenated product of the dehydrogenated material wherein the dehydrogenated material is rehydrogenated to form a solid material containing hydrogen atoms chemically bonded to one or more elements.Type: ApplicationFiled: June 20, 2006Publication date: June 4, 2009Applicant: University of South CarolinaInventors: James A. Ritter, Armin D. Ebner, Jun Wang, Tao Wang, Charles E. Holland
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Publication number: 20090000956Abstract: In one embodiment of the present disclosure, a process for electrochemical hydrogen production is provided. The process includes providing an electrochemical cell with an anode side including an anode, a cathode side including a cathode, and a membrane separating the anode side from the cathode side. The process further includes feeding molecules of at least one gaseous reactant to the anode, oxidizing one or more molecules of the gaseous reactant at the anode to produce a gas product and protons, passing the protons through the membrane to the cathode, and reducing the protons at the cathode to form hydrogen gas.Type: ApplicationFiled: April 12, 2006Publication date: January 1, 2009Applicant: UNIVERSITY OF SOUTH CAROLINAInventors: John W. Weidner, Charles E. Holland
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Patent number: 7384574Abstract: A hydrogen storage material having improved hydrogen absorbtion and desorption kinetics is provided by adding graphite to a complex hydride such as a metal-doped alanate, i.e., NaAlH4. The incorporation of graphite into the complex hydride significantly enhances the rate of hydrogen absorbtion and desorption and lowers the desorption temperature needed to release stored hydrogen.Type: GrantFiled: July 19, 2004Date of Patent: June 10, 2008Assignees: Westinghouse Savannah River Co., University of South CarolinaInventors: Ragaiy Zidan, James A. Ritter, Armin D. Ebner, Jun Wang, Charles E. Holland
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Patent number: 5174475Abstract: A sequential dosing medicament for topical treatment of fungal infections comprising a first pharmaceutical composition having an antifungal agent and an antiinflammatory agent, e.g. a steroid, a second separate pharmaceutical composition having only an antifungal agent as the active ingtredient. Also a method for such sequential dosing, particularly using oxiconazole as the antifungal agent and fluticasone as the steroid.Type: GrantFiled: March 26, 1991Date of Patent: December 29, 1992Assignee: Glaxo Inc.Inventors: Robert M. Day, Charles E. Holland, George E. Van Lear