Patents by Inventor Gayan Priyadharshana

Gayan Priyadharshana 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).

  • Process for preparation of nanoparticles from magnetite ore
    Patent number: 10192660
    Abstract: The compositions and methods herein relate to stable dispersions of long chain carboxylic acid-stabilized magnetite nanoparticles dispersed in alcohol. These compositions are useful in advanced biomedical applications.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: January 29, 2019
    Assignee: Sri Lanka Institute of Nanotechnology (PVT) Ltd.
    Inventors: Veranja Karunaratne, Gayan Priyadharshana, Sunanda Gunasekara, Nilwala Kottegoda, Atula Senaratne
  • Composition and method for sustained release of agricultural macronutrients
    Patent number: 8696784
    Abstract: A fertilizer composition wherein a nitrogen containing macronutrient is adsorbed on the surface of hydroxyapatite phosphate nanoparticles. Said fertilizer composition slowly releases the nitrogen containing macronutrient to soil.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: April 15, 2014
    Assignee: Sri Lanka Institute of Nanotechnology (Pvt) Ltd
    Inventors: Nilwala Kottegoda, Gayan Priyadharshana, Chanaka Sandaruwan, Damayanthi Dahanayake, Sunanda Gunasekara, A. J. Gehan Amaratunga, Veranja Karunaratne
  • COMPOSITION AND METHOD FOR SUSTAINED RELEASE OF AGRICULTURAL MACRONUTRIENTS
    Publication number: 20130098125
    Abstract: A fertilizer composition wherein a nitrogen containing macronutrient is adsorbed on the surface of hydroxyapatite phosphate nanoparticles. Said fertilizer composition slowly releases the nitrogen containing macronutrient to soil.
    Type: Application
    Filed: December 7, 2012
    Publication date: April 25, 2013
    Applicant: SRI LANKA INSTITUTE OF NANOTECHNOLOGY (PVT) LTD.
    Inventors: Nilwala Kottegoda, Gayan Priyadharshana, Chanaka Sandaruwan, Damayanthi Dahanayake, Sunanda Gunasekara, A. J. Gehan Amaratunga, Veranja Karunaratne
  • PROCESS FOR PREPARATION OF NANOPARTICLES FROM MAGNETITE ORE
    Publication number: 20120056121
    Abstract: A process for making magnetite nanoparticle dispersions by reacting the surface groups of the destructured magnetite ore with carboxyl acid groups of the long chain carboxylic acid to form nanoparticles containing bound stabilizer and dispersing the nanoparticles in alcoholic solvent.
    Type: Application
    Filed: July 5, 2011
    Publication date: March 8, 2012
    Applicant: Sri Lanka Institute of Nanotechnology (PVT) Ltd.
    Inventors: Veranja Karunaratne, Gayan Priyadharshana, Sunanda Gunasekara, Nilwala Kottegoda, Atula Senaratne