Patents by Inventor Ritesh Ruhela

Ritesh Ruhela 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).

  • Dialkyldiaza-tetraalkyloctane diamide derivatives useful for the separation of trivalent actinides from lanthanides and process for the preparation thereof
    Patent number: 8785691
    Abstract: The novel lipophilic metal extractants of the class dialkyldiaza-tetraalkyloctanediamide (DADA) useful to selectively separate trivalent americium (sup. 241 Am) from trivalent lanthanides are represented by the formula 1: Wherein R is a C1 to C5 normal alkyl and R? is a C4 to C8 normal and branched alkyl group. The compounds are synthesized at high yield and purity by the reaction of corresponding N,N?-dialkylethylenediamine and N,N-dialkyl-2-chloroacetamide. The separation is achieved by utilizing the soft-soft interaction between the trivalent actinides and ‘N’ atoms of the extractant. Both soft donor “n” and hard donor ‘O’ sites are incorporated in the molecule for better extraction of trivalent actinides over trivalent lanthanides. Thus, this molecule can be used as selective extractant to separate trivalent actinides from trivalent lanthanides.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: July 22, 2014
    Assignee: Secretary, Department of Atomic Energy
    Inventors: Joti Nath Sharma, Ritesh Ruhela, Smitha Manohar, Piaray Kishen Wattal, Ashok Kumar Suri
  • DIALKYLDIAZA-TETRAALKYLOCTANE DIAMIDE DERIVATIVES USEFUL FOR THE SEPARATION OF TRIVALENT ACTINIDES FROM LANTHANIDES AND PROCESS FOR THE PREPARATION THEREOF
    Publication number: 20120172626
    Abstract: The novel lipophilic metal extractants of the class dialkyldiaza-tetraalkyloctanediamide (DADA) useful to selectively separate trivalent americium (sup. 241 Am) from trivalent lanthanides are represented by the formula 1: Wherein R is a C1 to C5 normal alkyl and R? is a C4 to C8 normal and branched alkyl group. The compounds are synthesized at high yield and purity by the reaction of corresponding N,N?-dialkylethylenediamine and N,N-dialkyl-2-chloroacetamide. The separation is achieved by utilizing the soft-soft interaction between the trivalent actinides and ‘N’ atoms of the extractant. Both soft donor “n” and hard donor ‘O’ sites are incorporated in the molecule for better extraction of trivalent actinides over trivalent lanthanides. Thus, this molecule can be used as selective extractant to separate trivalent actinides from trivalent lanthanides.
    Type: Application
    Filed: September 11, 2009
    Publication date: July 5, 2012
    Applicant: Secretary ,Department of Atomic Energy
    Inventors: Joti Nath Sharma, Ritesh Ruhela, Smitha Manohar, Piaray Kishen Wattal, Ashok Kumar Suri