Patents by Inventor Francesca PIETRA

Francesca PIETRA 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).

  • Wavelength converting material for a light emitting device
    Patent number: 10858584
    Abstract: Embodiments of the invention include a luminescent structure including an InZnP core comprising an alloy including both In and Zn, and a shell disposed on a surface of the core, wherein the core has a crystal lattice constant that matches or nearly matches the lattice constant of the shell.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: December 8, 2020
    Assignee: Lumileds LLC
    Inventors: Arjan-Jeroen Houtepen, Anne Wiebe Hoekstra, Francesca Pietra, Luca De Trizio, Liberato Manna
  • WAVELENGTH CONVERTING MATERIAL FOR A LIGHT EMITTING DEVICE
    Publication number: 20200199449
    Abstract: Embodiments of the invention include a luminescent structure including an InZnP core comprising an alloy including both In and Zn, and a shell disposed on a surface of the core, wherein the core has a crystal lattice constant that matches or nearly matches the lattice constant of the shell.
    Type: Application
    Filed: December 13, 2019
    Publication date: June 25, 2020
    Applicant: Lumileds LLC
    Inventors: Arjan-Jeroen HOUTEPEN, Anne Wiebe HOEKSTRA, Francesca PIETRA, Luca DE TRIZIO, Liberato MANNA
  • Wavelength converting material for a light emitting device
    Patent number: 10508236
    Abstract: Embodiments of the invention include a luminescent structure including an InxZnyP core, wherein 0<y/x<10, and wherein the core comprises an alloy including both In and Zn, and a shell disposed on a surface of the core, wherein a difference between a lattice constant of the shell and a lattice constant of the core relative to the lattice constant of the shell is less than 1%.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: December 17, 2019
    Assignee: LUMILEDS LLC
    Inventors: Arjan-Jeroen Houtepen, Anne Wiebe Hoekstra, Francesca Pietra, Luca De Trizio, Liberato Manna
  • WAVELENGTH CONVERTING MATERIAL FOR A LIGHT EMITTING DEVICE
    Publication number: 20180327664
    Abstract: Embodiments of the invention include a luminescent structure including an lnxZnyP core, wherein 0<y/x<10, and wherein the core comprises an alloy including both In and Zn, and a shell disposed on a surface of the core, wherein a difference between a lattice constant of the shell and a lattice constant of the core relative to the lattice constant of the shell is less than 1%.
    Type: Application
    Filed: October 25, 2016
    Publication date: November 15, 2018
    Applicant: Lumileds LLC
    Inventors: Arjan-Jeroen HOUTEPEN, Anne Wiebe HOEKSTRA, Francesca PIETRA, Luca DE TRIZIO, Liberato MANNA