Patents by Inventor Prabir K. Dutta
Prabir K. Dutta 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: 20230381069Abstract: Disclosed herein are topical compositions for the administration of active agents. The compositions can comprise zeolite nanoparticles dispersed in a topically acceptable carrier. The zeolite nanoparticles can further comprise an effective amount of an active agent adsorbed on the zeolite nanoparticles, encapsulated within the zeolite nanoparticles, or a combination thereof. Also provided sunscreen agents and antimicrobial agents, as well as compositions comprising sunscreen agents and antimicrobial agents.Type: ApplicationFiled: August 10, 2023Publication date: November 30, 2023Inventors: Prabir K. DUTTA, Bo WANG
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Publication number: 20230046062Abstract: Disclosed herein are compositions (e.g., sprays, paints, etc.) that comprise antimicrobial zeolite nanoparticles. Also provided are hemostatic compositions comprising zeolite nanoparticles, dryer sheets comprising zeolite nanoparticles, and textiles comprising zeolite nanoparticles. Also disclosed are compositions (e.g., sprays) that include a binder polymer to improve coating adherence. In some cases, the zeolite nanoparticles can further comprise an optical tracer (e.g., a fluorophore) associated with the zeolite nanoparticles. The optical tracer can be interrogated to confirm presence of the zeolite nanoparticles (or a coating comprising the zeolite nanoparticles) on a surface. Also provided are methods of forming viricidal coatings using compositions that comprise zeolite nanoparticles dispersed in a carrier.Type: ApplicationFiled: December 2, 2020Publication date: February 16, 2023Inventors: Prabir K. DUTTA, Bo WANG, James WALDMAN, Deborah KNIGHT, Sweta SHRESTHA
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Publication number: 20210148877Abstract: Disclosed herein are p-n metal oxide semiconductor (MOS) heterostructure-based sensors and systems. The sensors and systems described herein can include sensing element that comprises a first region comprising a p-type MOS material (e.g., NiO) and a second region comprising an n-type MOS material (e.g., In2O3). These sensors and systems can exhibit sensitivity and selectivity to NH3 at ppb levels, while discriminating against CO, NO, or a combination thereof at concentrations a thousand-fold higher (ppm) and spread over a considerable range (0-20 ppm). These sensors and systems can be used to detect and/or quantify NH3 in samples, including biological samples (e.g., breath samples) and combustion gases.Type: ApplicationFiled: January 5, 2021Publication date: May 20, 2021Inventors: Prabir K. DUTTA, Chenhu SUN
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Publication number: 20200179243Abstract: Disclosed herein are topical compositions for the administration of active agents. The compositions can comprise zeolite nanoparticles dispersed in a topically acceptable carrier. The zeolite nanoparticles can further comprise an effective amount of an active agent adsorbed on the zeolite nanoparticles, encapsulated within the zeolite nanoparticles, or a combination thereof. Also provided sunscreen agents and antimicrobial agents, as well as compositions comprising sunscreen agents and antimicrobial agents.Type: ApplicationFiled: July 31, 2017Publication date: June 11, 2020Applicant: Ohio State Innovation FoundationInventors: Prabir K. DUTTA, Bo WANG
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Publication number: 20190072515Abstract: Various embodiments of a gas sensor device and method of fabricating a gas sensor device are provided. In one embodiment a gas sensor device includes a base substrate, an electrolyte layer disposed on the base substrate and a plurality of potentiometric sensor units electrically coupled to the base substrate. Each potentiometric sensor unit includes an electrolyte layer disposed on the base substrate, a sensing electrode comprising tungsten oxide (WO3) and platinum (Pt), a reference electrode comprising Pt, and a plurality of connectors coupled to the plurality of potentiometric sensors to connect the plurality of potentiometric sensors in series.Type: ApplicationFiled: March 26, 2018Publication date: March 7, 2019Inventors: Prabir K. Dutta, Suvra P. Mondal
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Publication number: 20190017981Abstract: Disclosed herein are p-n metal oxide semiconductor (MOS) heterostructure-based sensors and systems. The sensors and systems described herein can include sensing element that comprises a first region comprising a p-type MOS material (e.g., NiO) and a second region comprising an n-type MOS material (e.g., In2O3). These sensors and systems can exhibit sensitivity and selectivity to NH3 at ppb levels, while discriminating against CO, NO, or a combination thereof at concentrations a thousand-fold higher (ppm) and spread over a considerable range (0-20 ppm). These sensors and systems can be used to detect and/or quantify NH3 in samples, including biological samples (e.g., breath samples) and combustion gases.Type: ApplicationFiled: May 19, 2016Publication date: January 17, 2019Inventors: Prabir K. DUTTA, Chenhu SUN
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Publication number: 20180099874Abstract: Disclosed are methods of synthesizing a hierarchically porous aluminosilicate materials. Methods for synthesizing a hierarchically porous aluminosilicate material can comprise (i) combining, in aqueous solution, a base, an aluminum source, and silicon source to form a precursor gel; (ii) removing water from the precursor gel to form a nucleated gel; and (iii) reacting the nucleated gel at a temperature of from 0° C. to 200° C. to form the hierarchically porous aluminosilicate material.Type: ApplicationFiled: October 9, 2017Publication date: April 12, 2018Inventors: Prabir K. Dutta, Bo Wang
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Publication number: 20180088078Abstract: Various embodiments of a gas sensor device and method of fabricating a gas sensor device are provided. In one embodiment a gas sensor device includes a base substrate, an electrolyte layer disposed on the base substrate and a plurality of potentiometric sensor units electrically coupled to the base substrate. Each potentiometric sensor unit includes an electrolyte layer disposed on the base substrate, a sensing electrode comprising tungsten oxide (WO3) and platinum (Pt), a reference electrode comprising Pt, and a plurality of connectors coupled to the plurality of potentiometric sensors to connect the plurality of potentiometric sensors in series.Type: ApplicationFiled: October 13, 2017Publication date: March 29, 2018Inventors: Prabir K. Dutta, Suvra P. Mondal
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Publication number: 20180088077Abstract: Various embodiments of a gas sensor device and method of fabricating a gas sensor device are provided. In one embodiment a gas sensor device includes a base substrate, an electrolyte layer disposed on the base substrate and a plurality of potentiometric sensor units electrically coupled to the base substrate. Each potentiometric sensor unit includes an electrolyte layer disposed on the base substrate, a sensing electrode comprising tungsten oxide (WO3)and platinum (Pt), a reference electrode comprising Pt, and a plurality of connectors coupled to the plurality of potentiometric sensors to connect the plurality of potentiometric sensors in series.Type: ApplicationFiled: September 29, 2017Publication date: March 29, 2018Inventors: Gary W. Hunter, Carl W. Chang, Prabir K. Dutta, Suvra P. Mondal, Azlin M. Biaggi-Labiosa, Daniel Laskowski, Raed Dweik
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Publication number: 20180088076Abstract: Various embodiments of a gas sensor device and method of fabricating a gas sensor device are provided. In one embodiment a gas sensor device includes a base substrate, an electrolyte layer disposed on the base substrate and a plurality of potentiometric sensor units electrically coupled to the base substrate. Each potentiometric sensor unit includes an electrolyte layer disposed on the base substrate, a sensing electrode comprising tungsten oxide (WO3) and platinum (Pt), a reference electrode comprising Pt, and a plurality of connectors coupled to the plurality of potentiometric sensors to connect the plurality of potentiometric sensors in series.Type: ApplicationFiled: August 31, 2017Publication date: March 29, 2018Inventors: Prabir K. Dutta, Suvra P. Mondal
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Patent number: 9927395Abstract: Various embodiments of a gas sensor device and method of fabricating a gas sensor device are provided. In one embodiment a gas sensor device includes a base substrate, an electrolyte layer disposed on the base substrate and a plurality of potentiometric sensor units electrically coupled to the base substrate. Each potentiometric sensor unit includes an electrolyte layer disposed on the base substrate, a sensing electrode comprising tungsten oxide (WO3) and platinum (Pt), a reference electrode comprising Pt, and a plurality of connectors coupled to the plurality of potentiometric sensors to connect the plurality of potentiometric sensors in series.Type: GrantFiled: October 13, 2017Date of Patent: March 27, 2018Assignee: Ohio State Innovation FoundationInventors: Prabir K. Dutta, Suvra P. Mondal
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Patent number: 9927394Abstract: Various embodiments of a gas sensor device and method of fabricating a gas sensor device are provided. In one embodiment a gas sensor device includes a base substrate, an electrolyte layer disposed on the base substrate and a plurality of potentiometric sensor units electrically coupled to the base substrate. Each potentiometric sensor unit includes an electrolyte layer disposed on the base substrate, a sensing electrode comprising tungsten oxide (WO3) and platinum (Pt), a reference electrode comprising Pt, and a plurality of connectors coupled to the plurality of potentiometric sensors to connect the plurality of potentiometric sensors in series.Type: GrantFiled: August 31, 2017Date of Patent: March 27, 2018Assignee: Ohio State Innovation FoundationInventors: Prabir K. Dutta, Suvra P. Mondal
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Patent number: 9164080Abstract: An NO sensing system includes an inlet for receiving an original sample, a humidifier, fluidly communicating with the inlet, and a first sensor. The original sample is fluidly transmitted through the humidifier and exits the humidifier as a humidified sample having a humidity above a predetermined level. The first sensor generates a potential difference in response to presence of NO in the humidified sample. The potential difference is indicative of a level of NO within the original sample.Type: GrantFiled: June 11, 2012Date of Patent: October 20, 2015Assignee: Ohio State Innovation FoundationInventors: Prabir K. Dutta, Suvra P. Mondal
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Publication number: 20140262835Abstract: Various embodiments of a gas sensor device and method of fabricating a gas sensor device are provided. In one embodiment a gas sensor device includes a base substrate, an electrolyte layer disposed on the base substrate and a plurality of potentiometric sensor units electrically coupled to the base substrate. Each potentiometric sensor unit includes an electrolyte layer disposed on the base substrate, a sensing electrode comprising tungsten oxide (WO3) and platinum (Pt), a reference electrode comprising Pt, and a plurality of connectors coupled to the plurality of potentiometric sensors to connect the plurality of potentiometric sensors in series.Type: ApplicationFiled: March 14, 2014Publication date: September 18, 2014Applicant: THE CLEVELAND CLINIC FOUNDATIONInventors: Gary W. Hunter, Carl W. Chang, Prabir K. Dutta, Suvra P. Mondal, Azlin M. Biaggi-Labiosa
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Publication number: 20130327122Abstract: An NO sensing system includes an inlet for receiving an original sample, a humidifier, fluidly communicating with the inlet, and a first sensor. The original sample is fluidly transmitted through the humidifier and exits the humidifier as a humidified sample having a humidity above a predetermined level. The first sensor generates a potential difference in response to presence of NO in the humidified sample. The potential difference is indicative of a level of NO within the original sample.Type: ApplicationFiled: June 11, 2012Publication date: December 12, 2013Applicant: THE OHIO STATE UNIVERSITY RESEARCH FOUNDATIONInventors: Prabir K. Dutta, Suvra P. Mondal
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Patent number: 8337588Abstract: Supported zeolite Y membranes exhibiting exceptionally high CO2 selectivities when used in CO2/N2 gas separations are produced by a seeding/secondary (hypothermal) growth approach in which a structure directing agent such as tetramethylammonium hydroxide is included in the aqueous crystal-growing composition used for membrane formation.Type: GrantFiled: April 12, 2010Date of Patent: December 25, 2012Assignee: The Ohio State University Research FoundationInventors: Krenar Shqau, Jeremy C. White, Prabir K. Dutta, Hendrik Verweij
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Patent number: 8114675Abstract: Described are CO sensors, methods for making the CO sensors, and methods for using the CO sensors. An exemplary CO sensor includes a ruthenium oxide present in a form having one or more surfaces, a pair of conductive electrodes operatively connected to a surface of the ruthenium oxide, and an electrical device operatively connected to the pair of conductive electrodes. The gas mixture contacts at least one surface of the ruthenium oxide during operation of the sensor and the electrical device applies a constant potential (or current) and measures a current (or potential) between the pair of conductive electrodes, from which a resistance can be derived as the gas mixture contacts at least one surface of the ruthenium oxide. The ruthenium oxide may have varying levels of hydration. Furthermore, the sensor operates at a temperature range of from about 25° C. to about 300° C.Type: GrantFiled: March 30, 2010Date of Patent: February 14, 2012Assignee: The Ohio State University Research FoundationInventors: Prabir K. Dutta, Adedunni D. Adeyemo
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Patent number: 8057652Abstract: A compact oxygen sensor is provided, comprising a mixture of metal and metal oxide an enclosure containing said mixture, said enclosure capable of isolating said mixture from an environment external of said enclosure, and a first wire having a first end residing within the enclosure and having a second end exposed to the environment. Also provided is a method for the fabrication of an oxygen sensor, the method comprising confining a metal-metal oxide solid mixture to a container which consists of a single material permeable to oxygen ions, supplying an electrical conductor having a first end and a second end, whereby the first end resides inside the container as a reference (PO2)ref, and the second end resides outside the container in the atmosphere where oxygen partial pressure (PO2)ext is to be measured, and sealing the container with additional single material such that grain boundary sliding occurs between grains of the single material and grains of the additional single material.Type: GrantFiled: September 16, 2005Date of Patent: November 15, 2011Assignee: UChicago Argonne, LLCInventors: Jules L. Routbort, Dileep Singh, Prabir K. Dutta, Ramamoorthy Ramasamy, John V. Spirig, Sheikh Akbar
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Patent number: 8057653Abstract: The present invention generally relates to carbon dioxide (CO2) sensors. In one embodiment, the present invention relates to a carbon dioxide (CO2) sensor that incorporates lithium phosphate (Li3PO4) as an electrolyte and sensing electrode comprising a combination of lithium carbonate (Li2CO3) and barium carbonate (BaCO3). In another embodiment, the present invention relates to a carbon dioxide (CO2) sensor has a reduced sensitivity to humidity due to a sensing electrode with a layered structure of lithium carbonate and barium carbonate. In still another embodiment, the present invention relates to a method of producing carbon dioxide (CO2) sensors having lithium phosphate (Li3PO4) as an electrolyte and sensing electrode comprising a combination of lithium carbonate (Li2CO3) and barium carbonate (BaCO3).Type: GrantFiled: October 15, 2007Date of Patent: November 15, 2011Assignee: Ohio State Research FoundationInventors: Prabir K. Dutta, Inhee Lee, Sheikh A. Akbar
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Publication number: 20110247492Abstract: Supported zeolite Y membranes exhibiting exceptionally high CO2 selectivities when used in CO2/N2 gas separations are produced by a seeding/secondary (hypothermal) growth approach in which a structure directing agent such as tetramethylammonium hydroxide is included in the aqueous crystal-growing composition used for membrane formation.Type: ApplicationFiled: April 12, 2010Publication date: October 13, 2011Applicant: THE OHIO STATE UNIVERSITY RESEARCH FOUNDATIONInventors: Krenar Shqau, Jeremy C. White, Prabir K. Dutta, Hendrik Verweij