Patents by Inventor Sawitra Mardyani

Sawitra Mardyani 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).

  • Stable, water-soluble quantum dot, method of preparation and conjugates thereof
    Publication number: 20070042576
    Abstract: A method for manufacturing powdered quantum dots comprising the steps of: a) reacting quantum dots comprising a core, a cap and a first ligand associated with the outer surfaces thereof with a second ligand, the second ligand displacing the first ligand and attaching to the outer surfaces of the quantum dots, b) isolating the quantum dots having the attached second ligand from the reaction mixture, c) reacting the isolated quantum dots having the attached second ligand with a small organic molecule whereby the small organic molecule attaches to the second ligand, d) reacting the quantum dots having the attached small organic molecule with a cross-linking agent to cross-link the small organic molecule attached to the second ligand with an adjacent second ligand attached to the surfaces of the quantum dots, e) isolating the quantum dots formed in step (d); and f) drying the isolated quantum dots to form powdered quantum dots. The invention includes the quantum dots.
    Type: Application
    Filed: October 30, 2006
    Publication date: February 22, 2007
    Inventors: Warren Chan, Hans Fischer, Sawitra Mardyani, Wen Jiang
  • Stable, water-soluble quantum dot, method of preparation and conjugates thereof
    Patent number: 7151047
    Abstract: A method for manufacturing powdered quantum dots comprising the steps of: a) reacting quantum dots comprising a core, a cap and a first ligand associated with the outer surfaces thereof with a second ligand, the second ligand displacing the first ligand and attaching to the outer surfaces of the quantum dots, b) isolating the quantum dots having the attached second ligand from the reaction mixture, c) reacting the isolated quantum dots having the attached second ligand with a small organic molecule whereby the small organic molecule attaches to the second ligand, d) reacting the quantum dots having the attached small organic molecule with a cross-linking agent to cross-link the small organic molecule attached to the second ligand with an adjacent second ligand attached to the surfaces of the quantum dots, e) isolating the quantum dots formed in step (d); and f) drying the isolated quantum dots to form powdered quantum dots. The invention includes the quantum dots.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: December 19, 2006
    Inventors: Warren Chan, Hans Fischer, Sawitra Mardyani, Wen Jiang
  • Stable, water-soluble quantum dot, method of preparation and conjugates thereof
    Publication number: 20060014315
    Abstract: A method for manufacturing powdered quantum dots comprising the steps of: a) reacting quantum dots comprising a core, a cap and a first ligand associated with the outer surfaces thereof with a second ligand, the second ligand displacing the first ligand and attaching to the outer surfaces of the quantum dots, b) isolating the quantum dots having the attached second ligand from the reaction mixture, c) reacting the isolated quantum dots having the attached second ligand with a small organic molecule whereby the small organic molecule attaches to the second ligand, d) reacting the quantum dots having the attached small organic molecule with a cross-linking agent to cross-link the small organic molecule attached to the second ligand with an adjacent second ligand attached to the surfaces of the quantum dots, e) isolating the quantum dots formed in step (d); and f) drying the isolated quantum dots to form powdered quantum dots. The invention includes the quantum dots.
    Type: Application
    Filed: April 28, 2005
    Publication date: January 19, 2006
    Inventors: Warren Chan, Hans Fischer, Sawitra Mardyani, Wen Jiang