Patents by Inventor Madhu S. R. Ayyagari

Madhu S. R. Ayyagari 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).

  • Large-scale production of polyphenols or polyaromatic amines using enzyme-mediated reactions
    Patent number: 6444450
    Abstract: A process for large-scale, low cost, batch or continuous production of polyphenols using enzyme-mediated reactions and methods for recycling non-consumed reactants.
    Type: Grant
    Filed: January 28, 1998
    Date of Patent: September 3, 2002
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Joseph A. Akkara, Madhu S. R. Ayyagari, David L. Kaplan
  • LARGE-SCALE PRODUCTION OF POLYPHENOLS OR POLYAROMATIC AMINES USING ENZYME-MEDIATED REACTIONS
    Publication number: 20010008768
    Abstract: A process for large-scale, low cost, batch or continuous production of polyphenols using enzyme-mediated reactions and methods for recycling non-consumed reactants.
    Type: Application
    Filed: January 28, 1998
    Publication date: July 19, 2001
    Inventors: JOSEPH A. AKKARA, MADHU S. R. AYYAGARI, DAVID L. KAPLAN
  • Chemiluminescence-based method for rapid and sensitive in-situ detection of organophosphorus compounds and metal ions
    Patent number: 5846753
    Abstract: A method of detecting the presence of a substance being monitored in a medium, selected from the group of substances including organophosphorus compounds and the metal ions Zn, Be and Bi, including the steps of: providing a 1,2-dioxetane phenyl phosphate compound; providing a phosphatase that catalytically degrades the 1,2-dioxetane phenyl phosphate compound to produce light, the catalytic activity of the phosphatase toward 1,2-dioxetane phenyl phosphate compound being altered by the substance being monitored; exposing the 1,2-dioxetane phenyl phosphate compound and the phosphatase together to a medium which may contain the substance being monitored; detecting light produced after the exposing step; and determining, from the detected light, the presence and concentration in the medium of the substance being monitored.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: December 8, 1998
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Joseph A. Akkara, David L. Kaplan, Madhu S. R. Ayyagari, Kenneth A. Marx, Sanjay Kamtekar, Rajiv Pande, Sukant K. Tripathy, Jayant Kumar