Patents by Inventor Dhananjay B. Puranik

Dhananjay B. Puranik 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).

  • Synthesis of acrylate and alkyl acrylate monomers and polymers of chelators
    Patent number: 6143849
    Abstract: Multifunctional chelating groups are covalently bound to acrylate or methylate monomers. These monomers are polymerized. The resulting polymers are highly substituted with chelating groups and are useful for removing metals from fluids such as liquid hydrocarbons. An example of a polymer according to this invention has the following structure: ##STR1## wherein Q is a saturated or unsaturated aliphatic group having 1 to about 200 carbon atoms and is typically an unsubstituted unbranched alkylene, a substituted unbranched alkylene, a substituted branched alkylene, or an unsubstituted branched alkylene, and is an integer having a value of at least 1.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: November 7, 2000
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Dhananjay B. Puranik, Eddie L. Chang