Patents by Inventor Hunter McDaniel
Hunter McDaniel 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: 12085443Abstract: An optical element is provided which includes an optical fiber, and a plurality of fluorophores disposed inside the optical fiber. The fluorophores have a quantum yield greater than 50%, and emit a spectrum of light having a maximum intensity at wavelengths within the range of 400 nm to 2000 nm.Type: GrantFiled: May 17, 2022Date of Patent: September 10, 2024Assignee: UbiQD, Inc.Inventors: Hunter McDaniel, Nikolay S. Makarov, Matthew R. Bergren
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Publication number: 20230083223Abstract: The present disclosure relates generally to nanoparticle formulations, and more specifically to nanoparticle and ligands used for imparting low-pH solubility in a range of solvents, including photoluminescent materials such as quantum dots.Type: ApplicationFiled: November 6, 2022Publication date: March 16, 2023Inventors: Karthik Ramasamy, Hunter McDaniel, Chloe Castaneda
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Publication number: 20230049071Abstract: Optical elements and compositions are provided which include an extruded polymer, and a plurality of fluorophores disposed within. The fluorescent compositions have quantum yields greater than 50% and are stable in performance over long durations of time under oxygen, moisture, and light exposure. In some embodiments, the extruded polymer is prepared as pellets, microparticles, nanoparticles, or films.Type: ApplicationFiled: December 30, 2020Publication date: February 16, 2023Inventors: HUNTER MCDANIEL, MATTHEW BERGREN, AARON JACKSON
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Patent number: 11569402Abstract: An optical element is provided which comprises a plurality of fluorophores disposed in a medium. The fluorophores have a quantum yield greater than 50% and an absorption spectrum with a maximum intensity at wavelengths less than 400 nm, and emit a spectrum of light having a maximum intensity at wavelengths within the range of 400 nm to 1200 nm. The optical element is at least partially transparent over the visible region of the spectrum. The optical element is especially useful as a window or other optical component of a greenhouse structure.Type: GrantFiled: May 9, 2018Date of Patent: January 31, 2023Assignee: UbiQD, Inc.Inventors: Hunter McDaniel, Matthew Bergren
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Patent number: 11492547Abstract: The present disclosure relates generally to nanoparticle formulations, and more specifically to nanoparticle and ligands used for imparting low-pH solubility in a range of solvents, including photoluminescent materials such as quantum dots.Type: GrantFiled: June 4, 2020Date of Patent: November 8, 2022Assignee: UbiQD, Inc.Inventors: Karthik Ramasamy, Hunter McDaniel, Chloe CastaƱeda
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Patent number: 11493444Abstract: A method is provided for verifying the authenticity of an article which bears a security mark. The method includes irradiating the security mark with a time-varying light source, ascertaining at least one portion of the emissions spectrum of the irradiated security mark with at least one photodetector, determining the photoluminescence lifetime of the security mark by monitoring the time or frequency response of the photodetector, and verifying the authenticity of the article only if the security mark exhibits a photoluminescence which has a lifetime that falls within the range of appropriate values for each portion of the photoluminescence spectrum for which the photoluminescence lifetime of said security mark was ascertained.Type: GrantFiled: June 23, 2020Date of Patent: November 8, 2022Assignee: UbiQD, Inc.Inventor: Hunter McDaniel
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Publication number: 20220310861Abstract: A laminated glass luminescent concentrator is provided which includes a solid medium having a plurality of fluorophores disposed therein. In some embodiments, the fluorophore is a low-toxicity quantum dot. In some embodiments, the fluorophore has significantly reduced self-absorption, which allows for unperturbed waveguiding of the photoluminescence over a long distance. Also disclosed are apparatuses for generating electricity from the laminated glass luminescent concentrator, and its combination with buildings and vehicles.Type: ApplicationFiled: June 10, 2020Publication date: September 29, 2022Inventors: AARON JACKSON, MATTHEW BERGREN, HUNTER MCDANIEL
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Publication number: 20220276091Abstract: An optical element is provided which includes an optical fiber, and a plurality of fluorophores disposed inside the optical fiber. The fluorophores have a quantum yield greater than 50%, and emit a spectrum of light having a maximum intensity at wavelengths within the range of 400 nm to 2000 nm.Type: ApplicationFiled: May 17, 2022Publication date: September 1, 2022Inventors: Hunter McDaniel, Nikolay S. Makarov, Matthew R. Bergren
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Publication number: 20210380877Abstract: The present disclosure relates generally to nanoparticle formulations, and more specifically to nanoparticle and ligands used for imparting low-pH solubility in a range of solvents, including photoluminescent materials such as quantum dots.Type: ApplicationFiled: June 4, 2020Publication date: December 9, 2021Inventors: Karthik Ramasamy, Hunter McDaniel, Chloe CastaƱeda
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Patent number: 11168225Abstract: Disclosed herein are embodiments of a composition comprising a polymer or sol-gel and one or more nanocrystals. The composition is useful as a luminescent solar concentrator. The nanocrystals are dispersed in the polymer or sol-gel matrix so as to reduce or substantially prevent nanocrystal-to-nanocrystal energy transfer and a subsequent reduction in the emission efficiency of the composition. In some embodiments, the polymer matrix comprises an acrylate polymer. Also disclosed herein is a method for making the composition. Devices comprising the composition are disclosed. In some cases the polymer is the waveguide, in others the polymer is applied as a coating on a waveguide. In some examples, the device is a window.Type: GrantFiled: July 27, 2018Date of Patent: November 9, 2021Assignee: Triad National Security, LLCInventors: Hunter McDaniel, Victor I. Klimov
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Publication number: 20200319105Abstract: A method is provided for verifying the authenticity of an article which bears a security mark. The method includes irradiating the security mark with a time-varying light source, ascertaining at least one portion of the emissions spectrum of the irradiated security mark with at least one photodetector, determining the photoluminescence lifetime of the security mark by monitoring the time or frequency response of the photodetector, and verifying the authenticity of the article only if the security mark exhibits a photoluminescence which has a lifetime that falls within the range of appropriate values for each portion of the photoluminescence spectrum for which the photoluminescence lifetime of said security mark was ascertained.Type: ApplicationFiled: June 23, 2020Publication date: October 8, 2020Inventor: Hunter McDaniel
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Patent number: 10724951Abstract: A method is provided for verifying the authenticity of an article which bears a security mark. The method includes irradiating the security mark with a time-varying light source, ascertaining at least one portion of the emissions spectrum of the irradiated security mark with at least one photodetector, determining the photoluminescence lifetime of the security mark by monitoring the time or frequency response of the photodetector, and verifying the authenticity of the article only if the security mark exhibits a photoluminescence which has a lifetime that falls within the range of appropriate values for each portion of the photoluminescence spectrum for which the photoluminescence lifetime of said security mark was ascertained.Type: GrantFiled: April 3, 2018Date of Patent: July 28, 2020Assignee: UbiQD, Inc.Inventor: Hunter McDaniel
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Publication number: 20200176625Abstract: An optical element is provided which comprises a plurality of fluorophores disposed in a medium. The fluorophores have a quantum yield greater than 50% and an absorption spectrum with a maximum intensity at wavelengths less than 400 nm, and emit a spectrum of light having a maximum intensity at wavelengths within the range of 400 nm to 1200 nm. The optical element is at least partially transparent over the visible region of the spectrum. The optical element is especially useful as a window or other optical component of a greenhouse structure.Type: ApplicationFiled: May 9, 2018Publication date: June 4, 2020Inventors: Hunter McDaniel, Matthew Bergren
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Publication number: 20190051779Abstract: Disclosed herein are embodiments of a composition comprising a polymer or sol-gel and one or more nanocrystals. The composition is useful as a luminescent solar concentrator. The nanocrystals are dispersed in the polymer or sol-gel matrix so as to reduce or substantially prevent nanocrystal-to-nanocrystal energy transfer and a subsequent reduction in the emission efficiency of the composition. In some embodiments, the polymer matrix comprises an acrylate polymer. Also disclosed herein is a method for making the composition. Devices comprising the composition are disclosed. In some cases the polymer is the waveguide, in others the polymer is applied as a coating on a waveguide. In some examples, the device is a window.Type: ApplicationFiled: July 27, 2018Publication date: February 14, 2019Applicant: Los Alamos National Security, LLCInventors: Hunter McDaniel, Victor I. Klimov
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Patent number: 10170022Abstract: Common approaches to retroreflectors rely on absorptive materials that waste light energy that could be utilized for visibility. Disclosed photoluminescent retroreflectors filter reflected light, like traditional colored retroreflectors, but down-convert photons of the wrong color into a glow visible from more directions. The glow enables visibility for more observers or observers whose light source is far from their line of sight. The color of the glow can be adjusted by choice of luminescent material as a design feature or safety purpose. Certain embodiments utilize photoluminescent additives within a retroreflector while other embodiments utilize a photoluminescent coating on top of a pre-made retroreflector. An exemplary photoluminescent material for these optical devices is CuInZnS2 quantum dots.Type: GrantFiled: June 10, 2015Date of Patent: January 1, 2019Assignee: UbiQD, Inc.Inventor: Hunter McDaniel
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Publication number: 20180364098Abstract: An optical element is provided which includes an optical fiber, and a plurality of fluorophores disposed inside the optical fiber. The fluorophores have a quantum yield greater than 50%, and emit a spectrum of light having a maximum intensity at wavelengths within the range of 400 nm to 2000 nm.Type: ApplicationFiled: June 14, 2018Publication date: December 20, 2018Inventors: Hunter McDaniel, Nikolay S. Makarov, Matthew R. Bergren
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Patent number: 10082387Abstract: A fluorescent liquid penetrant is provided which includes a liquid medium having a plurality of fluorophores disposed therein. Upon excitation with a suitable light source, the penetrant exhibits a quantum yield greater than 40% (or in some embodiments, greater than 90%). In some embodiments, the fluorophore is a low-toxicity quantum dot. In some embodiments, the fluorophore has significantly reduced self-absorption, which allows for surface discontinuity depth measurement. Also disclosed are apparatuses for using these fluorescent liquid penetrants for non-destructive testing purposes. In some embodiments, these tests include measuring the depth of a discontinuity by analyzing photoluminescence intensity and/or photoluminescence peak position shift.Type: GrantFiled: March 9, 2017Date of Patent: September 25, 2018Assignee: UbiQD, Inc.Inventors: Matthew R. Bergren, Hunter McDaniel
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Publication number: 20180224375Abstract: A method is provided for verifying the authenticity of an article which bears a security mark. The method includes irradiating the security mark with a time-varying light source, ascertaining at least one portion of the emissions spectrum of the irradiated security mark with at least one photodetector, determining the photoluminescence lifetime of the security mark by monitoring the time or frequency response of the photodetector, and verifying the authenticity of the article only if the security mark exhibits a photoluminescence which has a lifetime that falls within the range of appropriate values for each portion of the photoluminescence spectrum for which the photoluminescence lifetime of said security mark was ascertained.Type: ApplicationFiled: April 3, 2018Publication date: August 9, 2018Inventor: Hunter McDaniel
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Patent number: 9964488Abstract: A method is provided for verifying the authenticity of an article which bears a security mark. The method includes irradiating the security mark with a time-varying light source, ascertaining at least one portion of the emissions spectrum of the irradiated security mark with at least one photodetector, determining the photoluminescence lifetime of the security mark by monitoring the time or frequency response of the photodetector, and verifying the authenticity of the article only if the security mark exhibits a photoluminescence which has a lifetime that falls within the range of appropriate values for each portion of the photoluminescence spectrum for which the photoluminescence lifetime of said security mark was ascertained.Type: GrantFiled: September 21, 2015Date of Patent: May 8, 2018Assignee: UbiQD, Inc.Inventor: Hunter McDaniel
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Publication number: 20170341346Abstract: A laminated glass luminescent concentrator is provided which includes a solid medium having a plurality of fluorophores disposed therein. In some embodiments, the fluorophore is a low-toxicity quantum dot. In some embodiments, the fluorophore has significantly reduced self-absorption, which allows for unperturbed waveguiding of the photoluminescence over a long distance. Also disclosed are apparatuses for generating electricity from the laminated glass luminescent concentrator, and its combination with buildings and vehicles.Type: ApplicationFiled: May 25, 2017Publication date: November 30, 2017Applicant: UbiQD, LLCInventors: Hunter McDaniel, Aaron Jackson, Matthew R. Bergren