Patents by Inventor Colin McGuiness

Colin McGuiness 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: 20230028962
    Abstract: A method of determining the composition of a polished gemstone comprises passing an excitation beam through the gemstone from a table facet substantially to a culet of the gemstone, an axis of the excitation beam being substantially perpendicular to the table facet; and capturing luminescence emitted by the gemstone from an angle oblique to the axis of the excitation beam.
    Type: Application
    Filed: January 6, 2021
    Publication date: January 26, 2023
    Inventors: Peter Lanigan, Colin McGuiness
  • Publication number: 20230027883
    Abstract: A method of characterising a composition of a gemstone comprises irradiating an upper portion and a lower portion of the gemstone with one or more pulses of ultraviolet radiation at a wavelength of substantially 225 nm or less; capturing luminescence emitted by the upper portion of the gemstone and luminescence emitted by the lower portion of the gemstone in one or more time windows having a predetermined relationship with the or each pulse; and comparing properties of the captured luminescence from the upper and lower portions. A composition of the gemstone is characterised, based upon the comparison.
    Type: Application
    Filed: January 6, 2021
    Publication date: January 26, 2023
    Inventors: Peter Lanigan, Colin McGuiness