Patents by Inventor Jay Yamanaga

Jay Yamanaga 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).

  • Publication number: 20240209257
    Abstract: Disclosed are films comprising Ag In, Ga, and S (AIGS) nanostructures and at least one ligand bound to the nanostructures. In some embodiment, the AIGS nanostructures have a photon conversion efficiency of greater than 32% and a peak wavelength emission of 480-545 nm when excited using a blue light source with a wavelength of about 450 nm.
    Type: Application
    Filed: March 7, 2024
    Publication date: June 27, 2024
    Inventors: Ravisubhash TANGIRALA, Jay YAMANAGA, Wenzhou GUO, Christopher SUNDERLAND, Ashenafi Damtew MAMUYE, Chunming WANG, Eunhee HWANG, Nahyoung KIM
  • Publication number: 20240101900
    Abstract: The invention relates to highly luminescent nanostructures with improved blue light absorbance, particularly core/shell nanostructures comprising a ZnSe core and InP and/or ZnS shell layers. The invention also relates to methods of producing such nanostructures.
    Type: Application
    Filed: March 9, 2023
    Publication date: March 28, 2024
    Applicant: Nanosys, Inc.
    Inventors: John CURLEY, Chunming WANG, Jay YAMANAGA, Xiaofeng ZHANG, Christian IPPEN
  • Patent number: 11926776
    Abstract: Disclosed are films comprising Ag, In, Ga, and S (AIGS) nanostructures and at least one ligand bound to the nanostructures. In some embodiment, the AIGS nanostructures have a photon conversion efficiency of greater than 32% and a peak wavelength emission of 480-545 nm. In some embodiments, the nanostructures have an emission spectrum with a FWHM of 24-38 nm.
    Type: Grant
    Filed: June 22, 2022
    Date of Patent: March 12, 2024
    Assignee: SHOEI CHEMICAL INC.
    Inventors: Ravisubhash Tangirala, Jay Yamanaga, Wenzhou Guo, Christopher Sunderland, Ashenafi Damtew Mamuye, Chunming Wang, Eunhee Hwang, Nahyoung Kim
  • Patent number: 11824146
    Abstract: Quantum dots and methods of making quantum dots are described. A method begins with forming quantum dots having a core-shell structure with a plurality of ligands on the shell structure. The method includes exchanging the plurality of ligands with a plurality of second ligands. The plurality of second ligands have a weaker binding affinity to the shell structure than the plurality of first ligands. The plurality of second ligands are then exchanged with hydrolyzed alkoxysilane to form a monolayer of hydrolyzed alkoxysilane on a surface of the shell structure. The method includes forming a barrier layer around the shell structure by using the hydrolyzed alkoxysilane as a nucleation center.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: November 21, 2023
    Assignee: SHOEI CHEMICAL INC.
    Inventors: Shihai Kan, Jay Yamanaga, Charles Hotz, Jason Hartlove, Veeral Hardev, Jian Chen, Christian Ippen, Wenzhou Guo, Robert Wilson
  • Patent number: 11634631
    Abstract: The invention relates to highly luminescent nanostructures with improved blue light absorbance, particularly core/shell nanostructures comprising a ZnSe core and InP and/or ZnS shell layers. The invention also relates to methods of producing such nanostructures.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: April 25, 2023
    Assignee: Nanosys, Inc.
    Inventors: John Curley, Chunming Wang, Jay Yamanaga, Xiaofeng Zhang, Christian Ippen
  • Publication number: 20230002672
    Abstract: Disclosed are films comprising Ag, In, Ga, and S (AIGS) nanostructures and at least one ligand bound to the nanostructures. In some embodiment, the AIGS nanostructures have a photon conversion efficiency of greater than 32% and a peak wavelength emission of 480-545 nm. In some embodiments, the nanostructures have an emission spectrum with a FWHM of 24-38 nm.
    Type: Application
    Filed: June 22, 2022
    Publication date: January 5, 2023
    Applicant: Nanosys, Inc.
    Inventors: Ravisubhash TANGIRALA, Jay YAMANAGA, Wenzhou GUO, Christopher SUNDERLAND, Ashenafi Damtew MAMUYE, Chunming WANG, Eunhee HWANG, Nahyoung KIM
  • Patent number: 11407940
    Abstract: Disclosed are films comprising Ag, In, Ga, and S (AIGS) nanostructures and at least one ligand bound to the nanostructures. In some embodiment, the AIGS nanostructures have a photon conversion efficiency of greater than 32% and a peak wavelength emission of 480-545 nm. In some embodiments, the nanostructures have an emission spectrum with a FWHM of 24-38 nm.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: August 9, 2022
    Assignee: Nanosys, Inc.
    Inventors: Ravisubhash Tangirala, Jay Yamanaga, Wenzhou Guo, Christopher Sunderland, Ashenafi Damtew Mamuye, Chunming Wang, Eunhee Hwang, Nahyoung Kim
  • Publication number: 20220195294
    Abstract: Disclosed are films comprising Ag, In, Ga, and S (AIGS) nanostructures and at least one ligand bound to the nanostructures. In some embodiment, the AIGS nanostructures have a photon conversion efficiency of greater than 32% and a peak wavelength emission of 480-545 nm. In some embodiments, the nanostructures have an emission spectrum with a FWHM of 24-38 nm.
    Type: Application
    Filed: February 3, 2021
    Publication date: June 23, 2022
    Applicant: Nanosys, Inc.
    Inventors: Ravisubhash TANGIRALA, Jay YAMANAGA, Wenzhou GUO, Christopher SUNDERLAND, Ashenafi Damtew MAMUYE, Chunming WANG, Eunhee HWANG, Nahyoung KIM
  • Patent number: 11041071
    Abstract: The present disclosure provides nanostructure compositions and methods of producing nanostructure compositions. The nanostructure compositions comprise at least one population of nanostructures, at least one poly(alkylene oxide) ligand bound to the surface of the nanostructures, and optionally at least one organic resin. The present disclosure also provides nanostructure films comprising a nanostructure layer and methods of making nanostructure films.
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: June 22, 2021
    Assignee: Nanosys, Inc.
    Inventors: Ravisubhash Tangirala, Shihai Kan, Jay Yamanaga, Charles Hotz, Donald Zehnder
  • Patent number: 10985296
    Abstract: Embodiments of a display device including barrier layer coated quantum dots and a method of making the barrier layer coated quantum dots are described. Each of the barrier layer coated quantum dots includes a core-shell structure and a hydrophobic barrier layer disposed on the core-shell structure. The hydrophobic barrier layer is configured to provide a distance between the core-shell structure of one of the quantum dots with the core-shell structures of other quantum dots that are in substantial contact with the one of the quantum dots. The method for making the barrier layer coated quantum dots includes forming reverse micro-micelles using surfactants and incorporating quantum dots into the reverse micro-micelles. The method further includes individually coating the incorporated quantum dots with a barrier layer and isolating the barrier layer coated quantum dots with the surfactants of the reverse micro-micelles disposed on the barrier layer.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: April 20, 2021
    Assignee: Nanosys, Inc.
    Inventors: Jason Hartlove, Veeral Hardev, Shihai Kan, Jian Chen, Jay Yamanaga, Christian Ippen, Wenzhuo Guo, Charles Hotz, Robert Wilson
  • Publication number: 20210043814
    Abstract: Quantum dots and methods of making quantum dots are described. A method begins with forming quantum dots having a core-shell structure with a plurality of ligands on the shell structure. The method includes exchanging the plurality of ligands with a plurality of second ligands. The plurality of second ligands have a weaker binding affinity to the shell structure than the plurality of first ligands. The plurality of second ligands are then exchanged with hydrolyzed alkoxysilane to form a monolayer of hydrolyzed alkoxysilane on a surface of the shell structure. The method includes forming a barrier layer around the shell structure by using the hydrolyzed alkoxysilane as a nucleation center.
    Type: Application
    Filed: October 27, 2020
    Publication date: February 11, 2021
    Applicant: Nanosys, Inc.
    Inventors: Shihai KAN, Jay YAMANAGA, Charles HOTZ, Jason HARTLOVE, Veeral HARDEV, Jian CHEN, Christian IPPEN, Wenzhou GUO, Robert WILSON
  • Patent number: 10854798
    Abstract: Quantum dots and methods of making quantum dots are described. A method begins with forming quantum dots having a core-shell structure with a plurality of ligands on the shell structure. The method includes exchanging the plurality of ligands with a plurality of second ligands. The plurality of second ligands have a weaker binding affinity to the shell structure than the plurality of first ligands. The plurality of second ligands are then exchanged with hydrolyzed alkoxysilane to form a monolayer of hydrolyzed alkoxysilane on a surface of the shell structure. The method includes forming a barrier layer around the shell structure by using the hydrolyzed alkoxysilane as a nucleation center.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: December 1, 2020
    Assignee: Nanosys, Inc.
    Inventors: Shihai Kan, Jay Yamanaga, Charles Hotz, Jason Hartlove, Veeral Hardev, Jian Chen, Christian Ippen, Wenzhou Guo, Robert Wilson
  • Publication number: 20200216756
    Abstract: The invention relates to highly luminescent nanostructures with improved blue light absorbance, particularly core/shell nanostructures comprising a ZnSe core and InP and/or ZnS shell layers. The invention also relates to methods of producing such nanostructures.
    Type: Application
    Filed: December 20, 2019
    Publication date: July 9, 2020
    Applicant: Nanosys, Inc.
    Inventors: John CURLEY, Chunming WANG, Jay YAMANAGA, Xiaofeng ZHANG, Christian IPPEN
  • Publication number: 20200098951
    Abstract: Embodiments of a display device including barrier layer coated quantum dots and a method of making the barrier layer coated quantum dots are described. Each of the barrier layer coated quantum dots includes a core-shell structure and a hydrophobic barrier layer disposed on the core-shell structure. The hydrophobic barrier layer is configured to provide a distance between the core-shell structure of one of the quantum dots with the core-shell structures of other quantum dots that are in substantial contact with the one of the quantum dots. The method for making the barrier layer coated quantum dots includes forming reverse micro-micelles using surfactants and incorporating quantum dots into the reverse micro-micelles. The method further includes individually coating the incorporated quantum dots with a barrier layer and isolating the barrier layer coated quantum dots with the surfactants of the reverse micro-micelles disposed on the barrier layer.
    Type: Application
    Filed: November 27, 2019
    Publication date: March 26, 2020
    Applicant: Nanosys, Inc.
    Inventors: Jason HARTLOVE, Veeral HARDEV, Shihai KAN, Jian CHEN, Jay YAMANAGA, Christian IPPEN, Wenzhuo GUO, Charles HOTZ, Robert WILSON
  • Publication number: 20200035881
    Abstract: Quantum dots and methods of making quantum dots are described. A method begins with forming quantum dots having a core-shell structure with a plurality of ligands on the shell structure. The method includes exchanging the plurality of ligands with a plurality of second ligands. The plurality of second ligands have a weaker binding affinity to the shell structure than the plurality of first ligands. The plurality of second ligands are then exchanged with hydrolyzed alkoxysilane to form a monolayer of hydrolyzed alkoxysilane on a surface of the shell structure. The method includes forming a barrier layer around the shell structure by using the hydrolyzed alkoxysilane as a nucleation center.
    Type: Application
    Filed: October 1, 2019
    Publication date: January 30, 2020
    Applicant: Nanosys, Inc.
    Inventors: Shihai KAN, Jay YAMANAGA, Charles HOTZ, Jason HARTLOVE, Veeral HARDEV, Jian CHEN, Christian IPPEN, Wenzhou GUO, Robert WILSON
  • Patent number: 10497841
    Abstract: Embodiments of a display device including barrier layer coated quantum dots and a method of making the barrier layer coated quantum dots are described. Each of the barrier layer coated quantum dots includes a core-shell structure and a hydrophobic barrier layer disposed on the core-shell structure. The hydrophobic barrier layer is configured to provide a distance between the core-shell structure of one of the quantum dots with the core-shell structures of other quantum dots that are in substantial contact with the one of the quantum dots. The method for making the barrier layer coated quantum dots includes forming reverse micro-micelles using surfactants and incorporating quantum dots into the reverse micro-micelles. The method further includes individually coating the incorporated quantum dots with a barrier layer and isolating the barrier layer coated quantum dots with the surfactants of the reverse micro-micelles disposed on the barrier layer.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: December 3, 2019
    Assignee: Nanosys, Inc.
    Inventors: Jason Hartlove, Veeral Hardev, Shihai Kan, Jian Chen, Jay Yamanaga, Christian Ippen, Wenzhou Guo, Charles Hotz, Robert Wilson
  • Patent number: 10475971
    Abstract: Quantum dots and methods of making quantum dots are described. A method begins with forming quantum dots having a core-shell structure with a plurality of ligands on the shell structure. The method includes exchanging the plurality of ligands with a plurality of second ligands. The plurality of second ligands have a weaker binding affinity to the shell structure than the plurality of first ligands. The plurality of second ligands are then exchanged with hydrolyzed alkoxysilane to form a monolayer of hydrolyzed alkoxysilane on a surface of the shell structure. The method includes forming a barrier layer around the shell structure by using the hydrolyzed alkoxysilane as a nucleation center.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: November 12, 2019
    Assignee: Nanosys, Inc.
    Inventors: Shihai Kan, Jay Yamanaga, Charles Hotz, Jason Hartlove, Veeral Hardev, Jian Chen, Christian Ippen, Wenzhuo Guo, Robert Wilson
  • Patent number: 10243114
    Abstract: Embodiments of a display device including barrier layer coated quantum dots and a method of making the barrier layer coated quantum dots are described. Each of the barrier layer coated quantum dots includes a core-shell structure and a hydrophobic barrier layer disposed on the core-shell structure. The hydrophobic barrier layer is configured to provide a distance between the core-shell structure of one of the quantum dots with the core-shell structures of other quantum dots that are in substantial contact with the one of the quantum dots. The method for making the barrier layer coated quantum dots includes forming reverse micro-micelles using surfactants and incorporating quantum dots into the reverse micro-micelles. The method further includes individually coating the incorporated quantum dots with a barrier layer and isolating the barrier layer coated quantum dots with the surfactants of the reverse micro-micelles disposed on the barrier layer.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: March 26, 2019
    Assignee: Nanosys, Inc.
    Inventors: Jason Hartlove, Veeral Hardev, Shihai Kan, Jian Chen, Jay Yamanaga, Christian Ippen, Wenzhuo Guo, Charles Hotz, Robert Wilson
  • Publication number: 20190088830
    Abstract: Embodiments of a display device including barrier layer coated quantum dots and a method of making the barrier layer coated quantum dots are described. Each of the barrier layer coated quantum dots includes a core-shell structure and a hydrophobic barrier layer disposed on the core-shell structure. The hydrophobic barrier layer is configured to provide a distance between the core-shell structure of one of the quantum dots with the core-shell structures of other quantum dots that are in substantial contact with the one of the quantum dots. The method for making the barrier layer coated quantum dots includes forming reverse micro-micelles using surfactants and incorporating quantum dots into the reverse micro-micelles. The method further includes individually coating the incorporated quantum dots with a barrier layer and isolating the barrier layer coated quantum dots with the surfactants of the reverse micro-micelles disposed on the barrier layer.
    Type: Application
    Filed: October 31, 2018
    Publication date: March 21, 2019
    Applicant: Nanosys, Inc.
    Inventors: Jason HARTLOVE, Veeral HARDEV, Shihai KAN, Jian CHEN, Jay YAMANAGA, Christian IPPEN, Wenzhou GUO, Charles HOTZ, Robert WILSON
  • Publication number: 20190077954
    Abstract: The present disclosure provides nanostructure compositions and methods of producing nanostructure compositions. The nanostructure compositions comprise at least one population of nanostructures, at least one poly(alkylene oxide) ligand bound to the surface of the nanostructures, and optionally at least one organic resin. The present disclosure also provides nanostructure films comprising a nanostructure layer and methods of making nanostructure films.
    Type: Application
    Filed: August 16, 2018
    Publication date: March 14, 2019
    Applicant: Nanosys, Inc.
    Inventors: Ravisubhash Tangirala, Shihai Kan, Jay Yamanaga, Charles Hotz, Donald Zehnder