Patents by Inventor Durga Subramanian

Durga Subramanian 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).

  • Coordinated metal compounds for reducing chromium
    Patent number: 7927418
    Abstract: Methods and compositions involving the use of nitrogen-containing coordinated metal compounds for stabilizing chromium VI reducing metal cations. Exemplary uses include processes for making cement, and exemplary compositions include cement additives, concrete admixtures, as well as hydratable cement and cementitous compositions.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: April 19, 2011
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Neal S. Berke, Leslie A. Jardine, Vijay Gupta, Charles R. Cornman, Antonio J. Aldykiewicz, Jr., Urszula B Latosiewicz, Felek Jachimowicz, Durga Subramanian
  • Coordinated Metal Compounds for Reducing Chromium
    Publication number: 20100162925
    Abstract: Methods and compositions involving the use of nitrogen-containing coordinated metal compounds for stabilizing chromium VI reducing metal cations. Exemplary uses include processes for making cement, and exemplary compositions include cement additives, concrete admixtures, as well as hydratable cement and cementitous compositions.
    Type: Application
    Filed: August 9, 2007
    Publication date: July 1, 2010
    Inventors: Neal S. Berke, Leslie A. Jardine, Vijay Gupta, Charles R. Cornman, Antonio J. Aldykiewicz, Urszula B. Latosiewicz, Felek Jachimowicz, Durga Subramanian