Patents by Inventor Pranab Choudhury

Pranab Choudhury 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).

  • Sulfamate stabilization of a bromine biocide in water
    Patent number: 6110387
    Abstract: This invention describes a method for stabilizing bromine biocides in water. A water-soluble bromide salt and a sulfamate source are added to a body of water, and then an oxidant is added to the body of water to form the biocidal bromine species.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: August 29, 2000
    Assignee: Albemarle Corporation
    Inventors: Pranab Choudhury, Robert L. Davis, Michael J. Sanders, David N. Roark
  • Process for preparing organosilazanes
    Patent number: 5010157
    Abstract: Organosilazanes having higher prepolymerization molecular weights are prepared by subjecting to elevated temperatures in a dry atmosphere the total reaction mixture resulting from the ammonolysis of an organohalosilane in an organic solvent. Their higher molecular weights expedite the polymerization of the organosilazanes to preceramic polysilazanes.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: April 23, 1991
    Assignee: Ethyl Corporation
    Inventors: Mannarsamy Balasubramanian, Pranab Choudhury