Patents by Inventor Pradeep N. PERERA

Pradeep N. PERERA 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).

  • ULTRAVIOLET-VISIBLE ABSORPTION SPECTROSCOPY FOR GEMSTONE IDENTIFICATION
    Publication number: 20240060879
    Abstract: Systems and methods here may be used for capturing and analyzing spectrometer data of multiple sample gemstones on a stage, including mapping digital camera image data of samples, for both reflective and transmission modes.
    Type: Application
    Filed: October 12, 2023
    Publication date: February 22, 2024
    Inventors: Hiroshi TAKAHASHI, Pradeep N. PERERA
  • Ultraviolet-visible absorption spectroscopy for gemstone identification
    Patent number: 11828703
    Abstract: Systems and methods here may be used for capturing and analyzing spectrometer data of multiple sample gemstones on a stage, including mapping digital camera image data of samples, for both reflective and transmission modes.
    Type: Grant
    Filed: July 21, 2021
    Date of Patent: November 28, 2023
    Assignee: Gemological Institute of America, Inc. (GIA)
    Inventors: Hiroshi Takahashi, Pradeep N. Perera
  • ULTRAVIOLET-VISIBLE ABSORPTION SPECTROSCOPY FOR GEMSTONE IDENTIFICATION
    Publication number: 20220034795
    Abstract: Systems and methods here may be used for capturing and analyzing spectrometer data of multiple sample gemstones on a stage, including mapping digital camera image data of samples, for both reflective and transmission modes.
    Type: Application
    Filed: July 21, 2021
    Publication date: February 3, 2022
    Inventors: Hiroshi TAKAHASHI, Pradeep N. PERERA