Patents by Inventor Ambati Narasimha Rao

Ambati Narasimha Rao 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).

  • PROCESS FOR PREPARATION OF N,N-DI SUBSTITUTED CARBOXAMIDES
    Publication number: 20150126734
    Abstract: The present disclosure relates to a single pot process for preparation of a N,N-di substituted carboxamide compounds of formula (I), said process comprising: reacting a carboxylic acid with a di-substituted carbamoyl chloride in presence of an organic tertiary base to obtain the N,N-di substituted carboxamide compounds of formula (I). The process of the present disclosure involves a simple step, and it is energy and time saving process for preparation of N,N-di substituted carboxamides.
    Type: Application
    Filed: December 20, 2011
    Publication date: May 7, 2015
    Applicant: DIRECTOR GENERAL, DEFENCE RESEARCH & DEVELOPMENT ORGNISATION
    Inventors: Ambati Narasimha Rao, Kumaran Ganesan, Rajagopalan Vijayaraghavan
  • Process for the preparation of n-heneicosane
    Patent number: 7615672
    Abstract: A process for the preparation of n-heneicosane is disclosed. The process comprises (a) reacting 2,4-alkaneanedione with 1-bromooctadecane in absolute ethanol in the presence of 18-crown-6 as catalyst to produce 2-heneicosanone; and (b) reducing said 2-heneicosanone using hydrazine hydrate and potassium hydroxide in ethylene glycol to obtain n-heneicosane.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: November 10, 2009
    Assignee: Defence Research & Development Organisation
    Inventors: Kumaran Ganesan, Ramesh Chandra Malhotra, Ambati Narasimha Rao, Pradeep Kumar Gupta, Asheesh Kumar Jain, Shri Prakash, Krishnamurthy Sekhar
  • Process for the Preparation of N-Heneicosane
    Publication number: 20080293992
    Abstract: A process for the preparation of n-heneicosane is disclosed. The process comprises (a) reacting 2,4-alkaneanedione with 1-bromooctadecane in absolute ethanol in the presence of 18-crown-6 as catalyst to produce 2-heneicosanone; and (b) reducing said 2-heneicosanone using hydrazine hydrate and potassium hydroxide in ethylene glycol to obtain n-heneicosane.
    Type: Application
    Filed: June 23, 2005
    Publication date: November 27, 2008
    Inventors: Kumaran Ganesan, Ramesh Chandra Malhotra, Ambati Narasimha Rao, Krishnamurthy Sekhar