Patents by Inventor Dushmanthi de A. Jayasinghe

Dushmanthi de A. Jayasinghe 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 the preparation of biodiesel
    Patent number: 7888520
    Abstract: The present invention relates to a process of preparing fatty alkyl esters (biodiesel), glycerin and lithium soap comprising: a) transesterifying an oil, fat or grease with a solution of lithium base in a monohydric aliphatic alcohol to produce fatty alkyl esters and a lithium alkaline glycerin; b) separating the fatty alkyl esters and the lithium alkaline glycerin and utilizing the lithium alkaline glycerin to saponify fatty alkyl compounds to produce glycerin and lithium soap; and c) optionally, separating the glycerin and lithium soaps.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: February 15, 2011
    Assignee: University of Saskatchewan
    Inventors: Martin J. T. Reaney, Dushmanthi de A. Jayasinghe
  • PROCESS FOR THE PREPARATION OF BIODIESEL
    Publication number: 20090163730
    Abstract: The present invention relates to a process of preparing fatty alkyl esters (biodiesel), glycerin and lithium soap comprising: a) transesterifying an oil, fat or grease with a solution of lithium base in a monohydric aliphatic alcohol to produce fatty alkyl esters and a lithium alkaline glycerin; b) separating the fatty alkyl esters and the lithium alkaline glycerin and utilizing the lithium alkaline glycerin to saponify fatty alkyl compounds to produce glycerin and lithium soap; and c) optionally, separating the glycerin and lithium soaps.
    Type: Application
    Filed: December 21, 2006
    Publication date: June 25, 2009
    Inventors: Martin J.T. Reaney, Dushmanthi de A. Jayasinghe