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).

  • 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
  • Patent number: 10266409
    Abstract: Methods for producing nanostructures, particularly Group III-V semiconductor nanostructures, are provided. The methods include use of novel Group III and/or Group V precursors, novel surfactants, oxide acceptors, high temperature, and/or stable co-products. Related compositions are also described. Methods and compositions for producing Group III inorganic compounds that can be used as precursors for nanostructure synthesis are provided. Methods for increasing the yield of nanostructures from a synthesis reaction by removal of a vaporous by-product are also described.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: April 23, 2019
    Assignee: Nanosys, Inc.
    Inventors: Erik C. Scher, Mihai A. Buretea, William P. Freeman, Joel Gamoras, Baixin Qian, Jeffrey A. Whiteford
  • Publication number: 20180155623
    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: Application
    Filed: December 22, 2017
    Publication date: June 7, 2018
    Applicant: Nanosys, Inc.
    Inventors: Wenzhuo GUO, Jian CHEN, Robert DUBROW, William P. FREEMAN
  • Patent number: 9957395
    Abstract: An antimicrobial coating system and method are described. In some embodiments, a system may include a composition. The composition may include one or more bridged polycyclic compounds. At least one of the bridged polycyclic compounds may include at least two cyclic groups, and at least two of the cyclic groups may include quaternary ammonium moieties. In some embodiments, a method may include applying an antimicrobial coating to an oral surface, a surface of a construction substrate, a surface of a marine substrate, a surface of a medical device, or a surface of a personal care device. The protective coating may be antimicrobial. A protective coating may include antimicrobial bridged polycyclic compounds. Bridged polycyclic compounds may include quaternary ammonium compounds. Bridged polycyclic compounds based coating systems may impart self-cleaning properties to a surface (e.g., a tooth surface).
    Type: Grant
    Filed: September 17, 2012
    Date of Patent: May 1, 2018
    Assignee: AllAccem, Inc.
    Inventors: Jeffery A. Whiteford, William P. Freeman
  • Patent number: 9884993
    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: September 28, 2015
    Date of Patent: February 6, 2018
    Assignee: NANOSYS, INC.
    Inventors: Wenzhuo Guo, Jian Chen, Robert Dubrow, William P. Freeman
  • Patent number: 9884763
    Abstract: Methods for producing nanostructures, particularly Group III-V semiconductor nanostructures, are provided. The methods include use of novel Group III and/or Group V precursors, novel surfactants, oxide acceptors, high temperature, and/or stable co-products. Related compositions are also described. Methods and compositions for producing Group III inorganic compounds that can be used as precursors for nanostructure synthesis are provided. Methods for increasing the yield of nanostructures from a synthesis reaction by removal of a vaporous by-product are also described.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: February 6, 2018
    Assignee: NANOSYS, INC.
    Inventors: Erik C. Scher, Mihai A. Buretea, William P. Freeman, Joel Gamoras, Balxin Qian, Jeffrey A. Whiteford
  • Patent number: 9804319
    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 8, 2016
    Date of Patent: October 31, 2017
    Assignee: Nanosys, Inc.
    Inventors: Robert S. Dubrow, William P. Freeman, Ernest Lee, Paul Furuta
  • Patent number: 9753212
    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 8, 2016
    Date of Patent: September 5, 2017
    Assignee: Nanosys, Inc.
    Inventors: Robert S. Dubrow, William P. Freeman, Ernest Lee, Paul Furuta
  • Patent number: 9688534
    Abstract: Methods for producing nanostructures, particularly Group III-V semiconductor nanostructures, are provided. The methods include use of novel Group III and/or Group V precursors, novel surfactants, oxide acceptors, high temperature, and/or stable co-products. Related compositions are also described. Methods and compositions for producing Group III inorganic compounds that can be used as precursors for nanostructure synthesis are provided. Methods for increasing the yield of nanostructures from a synthesis reaction by removal of a vaporous by-product are also described.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: June 27, 2017
    Assignee: NANOSYS, INC.
    Inventors: Erik C. Scher, Mihai A. Buretea, William P. Freeman, Joel Gamoras, Baixin Qian, Jeffrey A. Whiteford
  • Patent number: 9685583
    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: March 26, 2015
    Date of Patent: June 20, 2017
    Assignee: NANOSYS, Inc.
    Inventors: Wenzhuo Guo, Jian Chen, Robert Dubrow, William P. Freeman
  • Patent number: 9631141
    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: March 26, 2015
    Date of Patent: April 25, 2017
    Assignee: Nanosys, Inc.
    Inventors: Wenzhuo Guo, Jian Chen, Robert Dubrow, William P. Freeman
  • Publication number: 20160363713
    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: August 23, 2016
    Publication date: December 15, 2016
    Inventors: Robert S. Dubrow, William P. Freeman, Ernest Lee, Paul Furuta
  • Publication number: 20160349428
    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 8, 2016
    Publication date: December 1, 2016
    Applicant: Nanosys, Inc.
    Inventors: Robert S. DUBROW, William P. FREEMAN, Ernest LEE, Paul FURUTA
  • Patent number: 9469538
    Abstract: Methods for producing nanostructures, particularly Group III-V semiconductor nanostructures, are provided. The methods include use of novel Group III and/or Group V precursors, novel surfactants, oxide acceptors, high temperature, and/or stable co-products. Related compositions are also described. Methods and compositions for producing Group III inorganic compounds that can be used as precursors for nanostructure synthesis are provided. Methods for increasing the yield of nanostructures from a synthesis reaction by removal of a vaporous by-product are also described.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: October 18, 2016
    Assignee: Nanosys, Inc.
    Inventors: Erik C. Scher, Mihai A. Buretea, William P. Freeman, Joel Gamoras, Baixin Qian, Jeffrey A. Whiteford
  • Publication number: 20160096992
    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: Application
    Filed: September 28, 2015
    Publication date: April 7, 2016
    Applicant: Nanosys, Inc.
    Inventors: Wenzhuo Guo, Jian Chen, Robert Dubrow, William P. Freeman
  • Patent number: 9260655
    Abstract: Quantum-dot binding ligands with easy to synthesize alkyl-acids are provided. The quantum-dot binding ligands include a multiplicity of carboxy binding ligands in combination with an alkyl backbone, and optionally a solubilizing group. The ligands and coated nanostructures of the present invention are useful for close packed nanostructure compositions, which can have improved quantum confinement and/or reduced cross-talk between nanostructures.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: February 16, 2016
    Assignee: Nanosys, Inc.
    Inventors: William P. Freeman, Paul T. Furuta, Robert Dubrow
  • Patent number: 9212286
    Abstract: A coating system and method are described. In some embodiments, a system may include a composition. The composition may include one or more bridged polycyclic compounds. At least one of the bridged polycyclic compounds may include at least two cyclic groups, and at least two of the cyclic groups may include quaternary ammonium moieties. In some embodiments, a method may include applying a coating to a surface. The coating may be antimicrobial. A coating may include antimicrobial bridged polycyclic compounds. Bridged polycyclic compounds may include quaternary ammonium compounds. Bridged polycyclic compounds based coating systems may impart self-cleaning properties to a surface.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: December 15, 2015
    Assignee: AllAccem, Inc.
    Inventors: Jeffery A. Whiteford, William P. Freeman
  • Patent number: 9199842
    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: November 2, 2011
    Date of Patent: December 1, 2015
    Assignee: Nanosys, Inc.
    Inventors: Robert S. Dubrow, William P. Freeman, Ernest Lee, Paul Furuta
  • Patent number: 9169435
    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: June 13, 2013
    Date of Patent: October 27, 2015
    Assignee: Nanosys, Inc.
    Inventors: Wenzhuo Guo, Jian Chen, Robert Dubrow, William P. Freeman
  • Publication number: 20150300600
    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 3, 2015
    Publication date: October 22, 2015
    Applicant: Nanosys, Inc.
    Inventors: Robert S. DUBROW, William P. Freeman, Ernest Lee, Paul Furuta