Patents by Inventor Nilanjana Kar

Nilanjana Kar 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).

  • Esters of cellulosic materials and diacids and method of making thereof
    Patent number: 9708415
    Abstract: The present invention relates to esters of diacids and cellulosic materials and methods for making thereof. The ester has the chemical composition of Formula (I) Formula I where R1, R2, and R3 can be the same or different, and each of which is selected from —H, —COR?, —R??, or —COR? COOH, with the proviso that at least one of the R1, R2, or R3 is —COR? COOH; R? is an alkyl, alkenyl, alkynyl, or aromatic group; R? is an alkyl, alkenyl, or alkynyl group having 4 or more carbon atoms (?C4); and R?? is an alkyl, alkenyl, alkynyl, polyol, or aromatic group.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: July 18, 2017
    Assignee: Virginia Tech Intellectual Properties, Inc.
    Inventors: Kevin J. Edgar, Nilanjana Kar
  • ESTERS OF CELLULOSIC MATERIALS AND DIACIDS AND METHOD OF MAKING THEREOF
    Publication number: 20120197011
    Abstract: The present invention relates to esters of diacids and cellulosic materials and methods for making thereof. The ester has the chemical composition of Formula (I) Formula I where R1, R2, and R3 can be the same or different, and each of which is selected from —H, —COR?, —R??, or —COR? COOH, with the proviso that at least one of the R1, R2, or R3 is —COR? COOH; R? is an alkyl, alkenyl, alkynyl, or aromatic group; R? is an alkyl, alkenyl, or alkynyl group having 4 or more carbon atoms (?C4); and R?? is an alkyl, alkenyl, alkynyl, polyol, or aromatic group.
    Type: Application
    Filed: September 21, 2010
    Publication date: August 2, 2012
    Applicant: Virginia Tech Intellectual Properties, Inc.
    Inventors: Kevin J. Edgar, Nilanjana Kar