Patents by Inventor C. Rao Surapaneni

C. Rao Surapaneni 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).

  • Patent number: 7304164
    Abstract: 1-Methyl-2,4,5-Trinitroimidazole is synthesized starting from 4-nitroimidazole using stepwise nitration method and further methylation using Dimethylsulphate. It is relatively insensitive to impact and its thermal stability is excellent. The calculated detonation properties indicate that its performance is about 30% better than TATB. It can be prepared easily, with reasonable yield, starting from commercially available Imidazole. Results from impact sensitivity, friction sensitivity, time-to-explosion temperature and vacuum stability tests indicate that it is less sensitive than both RDX and HMX. The good oxygen balance and measured heat of formation data of this material indicate that its propellant performance should be good.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: December 4, 2007
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Reddy Damavarapu, C. Rao Surapaneni, Nathaniel Gelber, Raja G. Duddu, MaoXi Zhang, Paritosh R. Dave
  • Patent number: 7109359
    Abstract: The invention relates to a novel polyazido compound: 2,2-dinitro-1,3-diazidopropane.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: September 19, 2006
    Assignee: The United States of America represented by the Secretary of the Army
    Inventors: Paritosh R. Dave, Raja G. Duddu, Reddy Damavarapu, Nathaniel Gelber, Kathy Yang, C. Rao Surapaneni
  • Patent number: 6998485
    Abstract: The compound 3a,8a-bis-azidomethyl-3a,4,8a,9-tetrahydro-3H,8H-bis-[1,2,3]triazolo[1,5-a;1?,5?-d]pyrazine, whose structure is depicted below, is disclosed:
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: February 14, 2006
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Paritosh R. Dave, Raja G. Duddu, Reddy Damavarapu, Nathaniel Gelber, Kathy Yang, C. Rao Surapaneni
  • Patent number: 6965042
    Abstract: The compound 2,2-bis(azidomethyl)oxirane, whose structure is depicted below, is disclosed:
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: November 15, 2005
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Paritosh R. Dave, Raja G. Duddu, Nathaniel Gelber, Kathy Yang, C. Rao Surapaneni, Reddy Damavarapu
  • Patent number: 6841690
    Abstract: This invention relates to a series of novel compounds having the general structures A and B: including 2-azido-2-azidomethyl-1,3-diazidopropane (1), 2-azidomethyl-2-hydroxy-1,3-diazidopropane (2), 2-azidomethyl-2-nitrato-1,3-diazidopropane (3), 2-azidomethyl-2-nitro-1,3-diazidopropane (4), 2,2-dinitro-1,3-diazidopropane (5), methallyidiazide (6), a dimer of methallyidiazide (6), comprising 3a,8a-Bis-azidomethyl-3a,4,8a,9-tetrahydro-3H,8H-bis[1,2,3]triazolo[1,5-a;1?,5?-d]pyrazine (6-Dimer), 1,3-diazidoacetone (7), and 2-Oximido-1,3-diazidopropane (8). Also shown are reaction intermediates of these compounds, including 2,2-bis(chloromethyl)oxirane (9), and 2,2-bis(azidomethyl)oxirane (10).
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: January 11, 2005
    Assignee: The United States of America, as represented by the Secretary of the Army
    Inventors: Paritosh R. Dave, Raja G. Duddu, Reddy Damavarapu, Nathaniel Gelber, Kathy Yang, C. Rao Surapaneni