Patents by Inventor Shashini Premathilaka

Shashini Premathilaka 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).

  • Precious metal recovery
    Patent number: 9441284
    Abstract: A process for treating an off-gas from the thermal processing of a precious-metal-containing feedstock, the process comprising cooling the off-gas to a temperature of from 300 to 500° C.; passing the cooled off-gas through a first particulate filter to recover particulate material; and dosing the off-gas from the first particulate filter with a sorbent material and passing the dosed off-gas through a second particulate filter; wherein at least a portion of the particulate material recovered from the first particulate filter is recycled into the thermal processing of the precious-metal-containing feedstock.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: September 13, 2016
    Assignee: Tetronics (International) Limited
    Inventors: David Deegan, Shashini Premathilaka, Saeed Ismail
  • PRECIOUS METAL RECOVERY
    Publication number: 20160060727
    Abstract: A process for treating an off-gas from the thermal processing of a precious-metal-containing feedstock, the process comprising cooling the off-gas to a temperature of from 300 to 500° C.; passing the cooled off-gas through a first particulate filter to recover particulate material; and dosing the off-gas from the first particulate filter with a sorbent material and passing the dosed off-gas through a second particulate filter; wherein at least a portion of the particulate material recovered from the first particulate filter is recycled into the thermal processing of the precious-metal-containing feedstock.
    Type: Application
    Filed: April 16, 2014
    Publication date: March 3, 2016
    Applicant: TETRONICS (INTERNATIONAL) LIMITED
    Inventors: David Deegan, Shashini Premathilaka, Saeed Ismail