Patents by Inventor William P. Freeman

William P. Freeman 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: 20230303875
    Abstract: Ligand-capped scattering nanoparticles, curable ink compositions containing the ligand-capped scattering nanoparticles, and methods of forming films from the ink compositions are provided. Also provided are cured films formed by curing the ink compositions and photonic devices incorporating the films. The ligands bound to the inorganic scattering nanoparticles include a head group and a tail group. The head group includes a polyamine chain and binds the ligands to the nanoparticle surface. The tail group includes a polyalkylene oxide chain.
    Type: Application
    Filed: April 24, 2023
    Publication date: September 28, 2023
    Applicant: Kateeva, Inc.
    Inventors: William P. Freeman, Elena Rogojina
  • Publication number: 20230288757
    Abstract: Organic ligand-capped quantum dots and curable ink compositions containing the organic ligand-capped quantum dots are provided. Also provided are thin films formed from the ink compositions.
    Type: Application
    Filed: May 18, 2023
    Publication date: September 14, 2023
    Applicant: Kateeva, Inc.
    Inventors: Elena Rogojina, William P. Freeman, Florian Pschenitzka, Teresa A. Ramos, Christopher D. Favaro
  • Patent number: 11661524
    Abstract: Ligand-capped scattering nanoparticles, curable ink compositions containing the ligand-capped scattering nanoparticles, and methods of forming films from the ink compositions are provided. Also provided are cured films formed by curing the ink compositions and photonic devices incorporating the films. The ligands bound to the inorganic scattering nanoparticles include a head group and a tail group. The head group includes a polyamine chain and binds the ligands to the nanoparticle surface. The tail group includes a polyalkylene oxide chain.
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: May 30, 2023
    Assignee: Kateeva, Inc.
    Inventors: William P. Freeman, Elena Rogojina
  • Patent number: 11420412
    Abstract: Light-emitting quantum dot films, quantum dot lighting devices, and quantum dot-based backlight units are provided. Related compositions, components, and methods are also described. Improved quantum dot encapsulation and matrix materials are provided. Quantum dot films with protective barriers are described. High-efficiency, high brightness, and high-color purity quantum dot-based lighting devices are also included, as well as methods for improving efficiency and optical characteristics in quantum dot-based lighting devices.
    Type: Grant
    Filed: September 16, 2021
    Date of Patent: August 23, 2022
    Assignee: Nanosys, Inc.
    Inventors: Robert S. Dubrow, William P. Freeman, Ernest Lee, Paul Furuta
  • Patent number: 11396158
    Abstract: Light-emitting quantum dot films, quantum dot lighting devices, and quantum dot-based backlight units are provided. Related compositions, components, and methods are also described. Improved quantum dot encapsulation and matrix materials are provided. Quantum dot films with protective barriers are described. High-efficiency, high brightness, and high-color purity quantum dot-based lighting devices are also included, as well as methods for improving efficiency and optical characteristics in quantum dot-based lighting devices.
    Type: Grant
    Filed: July 22, 2021
    Date of Patent: July 26, 2022
    Assignee: Nanosys, Inc.
    Inventors: Robert S. Dubrow, William P. Freeman, Ernest Lee, Paul Furuta
  • Publication number: 20220135822
    Abstract: Ligand-capped scattering nanoparticles, curable ink compositions containing the ligand-capped scattering nanoparticles, and methods of forming films from the ink compositions are provided. Also provided are cured films formed by curing the ink compositions and photonic devices incorporating the films. The ligands bound to the inorganic scattering nanoparticles include a head group and a tail group. The head group includes a polyamine chain and binds the ligands to the nanoparticle surface. The tail group includes a polyalkylene oxide chain.
    Type: Application
    Filed: January 19, 2022
    Publication date: May 5, 2022
    Applicant: Kateeva, Inc.
    Inventors: William P. Freeman, Elena Rogojina
  • Patent number: 11261339
    Abstract: Ligand-capped scattering nanoparticles, curable ink compositions containing the ligand-capped scattering nanoparticles, and methods of forming films from the ink compositions are provided. Also provided are cured films formed by curing the ink compositions and photonic devices incorporating the films. The ligands bound to the inorganic scattering nanoparticles include a head group and a tail group. The head group includes a polyamine chain and binds the ligands to the nanoparticle surface. The tail group includes a polyalkylene oxide chain.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: March 1, 2022
    Assignee: Kateeva, Inc.
    Inventors: William P. Freeman, Elena Rogojina
  • Publication number: 20220040954
    Abstract: Light-emitting quantum dot films, quantum dot lighting devices, and quantum dot-based backlight units are provided. Related compositions, components, and methods are also described. Improved quantum dot encapsulation and matrix materials are provided. Quantum dot films with protective barriers are described. High-efficiency, high brightness, and high-color purity quantum dot-based lighting devices are also included, as well as methods for improving efficiency and optical characteristics in quantum dot-based lighting devices.
    Type: Application
    Filed: September 16, 2021
    Publication date: February 10, 2022
    Applicant: Nanosys, Inc.
    Inventors: Robert S. DUBROW, William P. FREEMAN, Ernest LEE, Paul FURUTA
  • Patent number: 11198270
    Abstract: Light-emitting quantum dot films, quantum dot lighting devices, and quantum dot-based backlight units are provided. Related compositions, components, and methods are also described. Improved quantum dot encapsulation and matrix materials are provided. Quantum dot films with protective barriers are described. High-efficiency, high brightness, and high-color purity quantum dot-based lighting devices are also included, as well as methods for improving efficiency and optical characteristics in quantum dot-based lighting devices.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: December 14, 2021
    Assignee: NANOSYS, Inc.
    Inventors: Robert S. Dubrow, William P. Freeman, Ernest Lee, Paul Furuta
  • Publication number: 20210347146
    Abstract: Light-emitting quantum dot films, quantum dot lighting devices, and quantum dot-based backlight units are provided. Related compositions, components, and methods are also described. Improved quantum dot encapsulation and matrix materials are provided. Quantum dot films with protective barriers are described. High-efficiency, high brightness, and high-color purity quantum dot-based lighting devices are also included, as well as methods for improving efficiency and optical characteristics in quantum dot-based lighting devices.
    Type: Application
    Filed: July 22, 2021
    Publication date: November 11, 2021
    Applicant: Nanosys, Inc.
    Inventors: Robert S. DUBROW, William P. FREEMAN, Ernest LEE, Paul FURUTA
  • Publication number: 20210129481
    Abstract: Light-emitting quantum dot films, quantum dot lighting devices, and quantum dot-based backlight units are provided. Related compositions, components, and methods are also described. Improved quantum dot encapsulation and matrix materials are provided. Quantum dot films with protective barriers are described. High-efficiency, high brightness, and high-color purity quantum dot-based lighting devices are also included, as well as methods for improving efficiency and optical characteristics in quantum dot-based lighting devices.
    Type: Application
    Filed: December 10, 2020
    Publication date: May 6, 2021
    Applicant: Nanosys, Inc.
    Inventors: Robert S. DUBROW, William P. FREEMAN, Ernest LEE, Paul FURUTA
  • Patent number: 10899105
    Abstract: Light-emitting quantum dot films, quantum dot lighting devices, and quantum dot-based backlight units are provided. Related compositions, components, and methods are also described. Improved quantum dot encapsulation and matrix materials are provided. Quantum dot films with protective barriers are described. High-efficiency, high brightness, and high-color purity quantum dot-based lighting devices are also included, as well as methods for improving efficiency and optical characteristics in quantum dot-based lighting devices.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: January 26, 2021
    Assignee: Nanosys, Inc.
    Inventors: Robert S. Dubrow, William P. Freeman, Ernest Lee, Paul Furuta
  • Publication number: 20200326597
    Abstract: Organic ligand-capped quantum dots and curable ink compositions containing the organic ligand-capped quantum dots are provided. Also provided are thin films formed from the ink compositions.
    Type: Application
    Filed: October 3, 2018
    Publication date: October 15, 2020
    Inventors: Elena Rogojina, William P. Freeman, Christopher D. Favaro, Florian Pschenitzka, Teresa A. Ramos
  • Publication number: 20200249388
    Abstract: Light-emitting quantum dot films, quantum dot lighting devices, and quantum dot-based backlight units are provided. Related compositions, components, and methods are also described. Improved quantum dot encapsulation and matrix materials are provided. Quantum dot films with protective barriers are described. High-efficiency, high brightness, and high-color purity quantum dot-based lighting devices are also included, as well as methods for improving efficiency and optical characteristics in quantum dot-based lighting devices.
    Type: Application
    Filed: February 4, 2020
    Publication date: August 6, 2020
    Applicant: Nanosys, Inc.
    Inventors: Robert S. DUBROW, William P. FREEMAN, Ernest LEE, Paul FURUTA
  • Patent number: 10707371
    Abstract: Highly luminescent nanostructures, particularly highly luminescent quantum dots, are provided. The nanostructures have high photoluminescence quantum yields and in certain embodiments emit light at particular wavelengths and have a narrow size distribution. The nanostructures can comprise ligands, including C5-C8 carboxylic acid ligands employed during shell formation and/or dicarboxylic or polycarboxylic acid ligands provided after synthesis. Processes for producing such highly luminescent nanostructures are also provided, including methods for enriching nanostructure cores with indium and techniques for shell synthesis.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: July 7, 2020
    Assignee: Nanosys, Inc.
    Inventors: Wenzhuo Guo, Jian Chen, Robert Dubrow, William P. Freeman
  • Publication number: 20200109304
    Abstract: Ligand-capped scattering nanoparticles, curable ink compositions containing the ligand-capped scattering nanoparticles, and methods of forming films from the ink compositions are provided. Also provided are cured films formed by curing the ink compositions and photonic devices incorporating the films. The ligands bound to the inorganic scattering nanoparticles include a head group and a tail group. The head group includes a polyamine chain and binds the ligands to the nanoparticle surface. The tail group includes a polyalkylene oxide chain.
    Type: Application
    Filed: September 18, 2019
    Publication date: April 9, 2020
    Inventors: William P. Freeman, Elena Rogojina
  • Patent number: 10551553
    Abstract: Light-emitting quantum dot films, quantum dot lighting devices, and quantum dot-based backlight units are provided. Related compositions, components, and methods are also described. Improved quantum dot encapsulation and matrix materials are provided. Quantum dot films with protective barriers are described. High-efficiency, high brightness, and high-color purity quantum dot-based lighting devices are also included, as well as methods for improving efficiency and optical characteristics in quantum dot-based lighting devices.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: February 4, 2020
    Assignee: Nanosys, Inc.
    Inventors: Robert S. Dubrow, William P. Freeman, Ernest Lee, Paul Furuta
  • Publication number: 20190391319
    Abstract: Light-emitting quantum dot films, quantum dot lighting devices, and quantum dot-based backlight units are provided. Related compositions, components, and methods are also described. Improved quantum dot encapsulation and matrix materials are provided. Quantum dot films with protective barriers are described. High-efficiency, high brightness, and high-color purity quantum dot-based lighting devices are also included, as well as methods for improving efficiency and optical characteristics in quantum dot-based lighting devices.
    Type: Application
    Filed: June 24, 2019
    Publication date: December 26, 2019
    Applicant: Nanosys, Inc.
    Inventors: Robert S. DUBROW, William P. FREEMAN, Ernest LEE, Paul FURUTA
  • Patent number: 10444423
    Abstract: Light-emitting quantum dot films, quantum dot lighting devices, and quantum dot-based backlight units are provided. Related compositions, components, and methods are also described. Improved quantum dot encapsulation and matrix materials are provided. Quantum dot films with protective barriers are described. High-efficiency, high brightness, and high-color purity quantum dot-based lighting devices are also included, as well as methods for improving efficiency and optical characteristics in quantum dot-based lighting devices.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: October 15, 2019
    Assignee: Nanosys, Inc.
    Inventors: Robert S. Dubrow, William P. Freeman, Ernest Lee, Paul Furuta
  • Patent number: 10302845
    Abstract: Light-emitting quantum dot films, quantum dot lighting devices, and quantum dot-based backlight units are provided. Related compositions, components, and methods are also described. Improved quantum dot encapsulation and matrix materials are provided. Quantum dot films with protective barriers are described. High-efficiency, high brightness, and high-color purity quantum dot-based lighting devices are also included, as well as methods for improving efficiency and optical characteristics in quantum dot-based lighting devices.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: May 28, 2019
    Assignee: Nanosys, Inc.
    Inventors: Robert S. Dubrow, William P. Freeman, Ernest Lee, Paul Furuta