Patents by Inventor Yeewah Annie CHOW
Yeewah Annie CHOW 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: 20240101897Abstract: The invention is in the field of nanostructure synthesis. Provided are highly luminescent core/shell nanostructures with zinc fluoride and zinc acetate bound to their surface. Also provided are methods of preparing the nanostructures, films comprising the nanostructures, and devices comprising the nanostructures.Type: ApplicationFiled: March 15, 2023Publication date: March 28, 2024Applicant: Nanosys, Inc.Inventors: Daekyoung KIM, Wenzhou GUO, Alexander TU, Yeewah Annie CHOW, Diego BARRERA, Christian IPPEN, Benjamin NEWMEYER, Ruiqing MA
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Publication number: 20230272276Abstract: This disclosure pertains to the field of nanotechnology. The disclosure provides nanostructure compositions comprising (a) at least one population of nanostructures; (b) at least one metal halide bound to the surface of the nanostructures; and (c) at least one metal carboxylate bound to the surface of the nanostructures. The nanostructure compositions have high quantum yield, narrow emission peak width, tunable emission wavelength, and colloidal stability. Also provided are methods of preparing the nanostructure compositions. And, nanostructure films and molded articles comprising the nanostructure compositions are also provided.Type: ApplicationFiled: January 9, 2023Publication date: August 31, 2023Applicant: Nanosys, Inc.Inventors: llan JEN-LA PLANTE, Yeewah Annie Chow, John J. Curley, Wenzhou Guo, Alexander Tu, Chunming Wang
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Patent number: 11634629Abstract: The invention is in the field of nanostructure synthesis. Provided are highly luminescent core/shell nanostructures with zinc fluoride and zinc acetate bound to their surface. Also provided are methods of preparing the nanostructures, films comprising the nanostructures, and devices comprising the nanostructures.Type: GrantFiled: July 10, 2020Date of Patent: April 25, 2023Assignee: Nanosys, Inc.Inventors: Daekyoung Kim, Wenzhou Guo, Alexander Tu, Yeewah Annie Chow, Diego Barrera, Christian Ippen, Benjamin Newmeyer, Ruiqing Ma
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Patent number: 11549058Abstract: This disclosure pertains to the field of nanotechnology. The disclosure provides nanostructure compositions comprising (a) at least one population of nanostructures; (b) at least one metal halide bound to the surface of the nanostructures; and (c) at least one metal carboxylate bound to the surface of the nanostructures. The nanostructure compositions have high quantum yield, narrow emission peak width, tunable emission wavelength, and colloidal stability. Also provided are methods of preparing the nanostructure compositions. And, nanostructure films and molded articles comprising the nanostructure compositions are also provided.Type: GrantFiled: January 24, 2020Date of Patent: January 10, 2023Assignee: Nanosys, Inc.Inventors: Ilan Jen-La Plante, Yeewah Annie Chow, John J. Curley, Wenzhou Guo, Alexander Tu, Chunming Wang
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Publication number: 20210408419Abstract: Embodiments of the present application relate to illumination devices using luminescent nanostructures. An illumination device includes a first conductive layer, a second conductive layer, a hole transport layer, an electron transport layer and a material layer that includes a plurality of luminescent nanostructures. The hole transport layer and the electron transport layer are each disposed between the first conductive layer and the second conductive layer. The material layer is disposed between the hole transport layer and the electron transport layer and includes one or more discontinuities in its thickness such that the hole transport layer and the electron transport layer contact each other at the one or more discontinuities. Resonant energy transfer occurs between the luminescent nanostructures and excitons at the discontinuities.Type: ApplicationFiled: September 13, 2021Publication date: December 30, 2021Applicant: Nanosys, Inc.Inventors: Emma Rose DOHNER, Yeewah Annie CHOW, Wenzhuo GUO, Christian Justus IPPEN, Jason Travis TILLMAN, Jonathan Andrew TRUSKIER
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Patent number: 11121339Abstract: Embodiments of the present application relate to illumination devices using luminescent nanostructures. An illumination device includes a first conductive layer, a second conductive layer, a hole transport layer, an electron transport layer and a material layer that includes a plurality of luminescent nanostructures. The hole transport layer and the electron transport layer are each disposed between the first conductive layer and the second conductive layer. The material layer is disposed between the hole transport layer and the electron transport layer and includes one or more discontinuities in its thickness such that the hole transport layer and the electron transport layer contact each other at the one or more discontinuities. Resonant energy transfer occurs between the luminescent nanostructures and excitons at the discontinuities.Type: GrantFiled: May 8, 2019Date of Patent: September 14, 2021Assignee: Nanosys, Inc.Inventors: Emma Rose Dohner, Yeewah Annie Chow, Wenzhuo Guo, Christian Justus Ippen, Jason Travis Tillman, Jonathan Andrew Truskier
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Publication number: 20210013377Abstract: The invention is in the field of nanostructure synthesis. Provided are highly luminescent core/shell nanostructures with zinc fluoride and zinc acetate bound to their surface. Also provided are methods of preparing the nanostructures, films comprising the nanostructures, and devices comprising the nanostructures.Type: ApplicationFiled: July 10, 2020Publication date: January 14, 2021Applicant: Nanosys, Inc.Inventors: Daekyoung KIM, Wenzhou GUO, Alexander TU, Yeewah Annie CHOW, Diego BARRERA, Christian IPPEN, Benjamin NEWMEYER, Ruiqing MA
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Publication number: 20200325396Abstract: This disclosure pertains to the field of nanotechnology. The disclosure provides methods of preparing nanostructures using in situ prepared zinc dioleate and/or a metal halide. The nanostructures have high quantum yield, narrow emission peak width, tunable emission wavelength, and colloidal stability. Also provided are nanostructures prepared using the methods. And, nanostructure films and molded articles comprising the nanostructures are also provided.Type: ApplicationFiled: April 14, 2020Publication date: October 15, 2020Applicant: Nanosys, Inc.Inventors: Yeewah Annie CHOW, Jason HARTLOVE, Charles HOTZ, Chunming WANG, Wenzhou GUO, Ilan JEN-LA PLANTE, Jason Travis TILLMAN, John J. CURLEY, Christian IPPEN, Alexander TU, Ke GONG, Minghu TU
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Publication number: 20200239769Abstract: This disclosure pertains to the field of nanotechnology. The disclosure provides nanostructure compositions comprising (a) at least one population of nanostructures; (b) at least one metal halide bound to the surface of the nanostructures; and (c) at least one metal carboxylate bound to the surface of the nanostructures. The nanostructure compositions have high quantum yield, narrow emission peak width, tunable emission wavelength, and colloidal stability. Also provided are methods of preparing the nanostructure compositions. And, nanostructure films and molded articles comprising the nanostructure compositions are also provided.Type: ApplicationFiled: January 24, 2020Publication date: July 30, 2020Applicant: Nanosys, Inc.Inventors: Ilan JEN-LA PLANTE, Yeewah Annie CHOW, John J. CURLEY, Wenzhou GUO, Alexander TU, Chunming WANG
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Publication number: 20190348623Abstract: Embodiments of the present application relate to illumination devices using luminescent nanostructures. An illumination device includes a first conductive layer, a second conductive layer, a hole transport layer, an electron transport layer and a material layer that includes a plurality of luminescent nanostructures. The hole transport layer and the electron transport layer are each disposed between the first conductive layer and the second conductive layer. The material layer is disposed between the hole transport layer and the electron transport layer and includes one or more discontinuities in its thickness such that the hole transport layer and the electron transport layer contact each other at the one or more discontinuities. Resonant energy transfer occurs between the luminescent nanostructures and excitons at the discontinuities.Type: ApplicationFiled: May 8, 2019Publication date: November 14, 2019Applicant: Nanosys, Inc.Inventors: Emma Rose DOHNER, Yeewah Annie Chow, Wenzhuo Guo, Christian Justus Ippen, Jason Travis Tillman, Jonathan Andrew Truskier
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Publication number: 20180119007Abstract: Highly luminescent nanostructures, particularly highly luminescent quantum dots, comprising a nanocrystal core and thick shells of ZnSe and ZnS, are provided. The nanostructures may have one or more gradient ZnSexS1-x monolayers between the ZnSe and ZnS shells, wherein the value of x decreases gradually from the interior to the exterior of the nanostructure. Also provided are methods of preparing the nanostructures comprising a high temperature synthesis method. The thick shell nanostructures of the present invention display increased stability and are able to maintain high levels of photoluminescent intensity over long periods of time. Also provided are nanostructures with increased blue light absorption.Type: ApplicationFiled: October 25, 2017Publication date: May 3, 2018Inventors: Christian IPPEN, IIan JEN-LA PLANTE, Shihai KAN, Chunming WANG, Wenzhou GUO, Yeewah Annie CHOW, Emma Rose DOHNER
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Publication number: 20170306227Abstract: Highly luminescent nanostructures, particularly highly luminescent quantum dots, comprising a nanocrystal core and thick shells of ZnSe and ZnS, are provided. The nanostructures may have one or more gradient ZnSexS1-x monolayers between the ZnSe and ZnS shells, wherein the value of x decreases gradually from the interior to the exterior of the nanostructure. Also provided are methods of preparing the nanostructures comprising a high temperature synthesis method. The thick shell nanostructures of the present invention display increased stability and are able to maintain high levels of photoluminescent intensity over long periods of time. Also provided are nanostructures with increased blue light absorption.Type: ApplicationFiled: April 26, 2017Publication date: October 26, 2017Inventors: Christian IPPEN, Ilan JEN-LA PLANTE, Shihai KAN, Chunming WANG, Wenzhuo GUO, Yeewah Annie CHOW