Patents by Inventor Roksana Tonny RASHID

Roksana Tonny RASHID 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).

  • Nanocrystal surface-emitting lasers
    Patent number: 11909176
    Abstract: An all-epitaxial, electrically injected surface-emitting green laser operates in a range of about 520-560 nanometers (nm). At 523 nm, for example, the device exhibits a threshold current density of approximately 0.4 kilo-amperes per square centimeter (kA/cm2), which is over one order of magnitude lower than that of previously reported blue laser diodes.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: February 20, 2024
    Assignee: The Regents of the University of Michigan
    Inventors: Yong-Ho Ra, Roksana Tonny Rashid, Xianhe Liu, Zetian Mi
  • NANOCRYSTAL SURFACE-EMITTING LASERS
    Publication number: 20210119420
    Abstract: An all-epitaxial, electrically injected surface-emitting green laser operates in a range of about 520-560 nanometers (nm). At 523 nm, for example, the device exhibits a threshold current density of approximately 0.4 kilo-amperes per square centimeter (kA/cm2), which is over one order of magnitude lower than that of previously reported blue laser diodes.
    Type: Application
    Filed: October 15, 2020
    Publication date: April 22, 2021
    Inventors: Yong-Ho RA, Roksana Tonny RASHID, Xianhe LIU, Zetian MI