Patents by Inventor Rajender Gupta

Rajender Gupta 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).

  • Publication number: 20140054503
    Abstract: A method of upgrading coal is disclosed, the method comprising: subjecting the coal to a hydrothermal dewatering process at a temperature and a pressure above ambient conditions to produce dewatered coal; removing ash tailings from the dewatered coal to produced reduced ash dewatered coal; and producing a coal water slurry with the reduced ash dewatered coal. An apparatus for upgrading coal is also disclosed, the apparatus comprising: a hydrothermal dewatering reactor connected to receive coal and output dewatered coal; an ash separator connected to receive dewatered coal from the hydrothermal dewatering reactor and output reduced ash dewatered coal; a slurrifier connected to receive reduced ash dewatered coal from the ash separator and output a coal water slurry.
    Type: Application
    Filed: August 27, 2012
    Publication date: February 27, 2014
    Applicant: THE GOVERNORS OF THE UNIVERSITY OF ALBERTA
    Inventors: Qingxia Liu, Jiantao Zhao, Moshfiqur Rahman, Rajender Gupta, Zhenghe Xu
  • Publication number: 20050228198
    Abstract: A process for the preparation of hydroxy(cycloalkane/cyclokene)phenylethyl of the general formula (III) comprising alkylation of its precursor amine of general formula (II) which is in turn produced by an effective reduction process from its precursor cyanide having the general formula (I) using Raney Nickel (CORMIII) as catalyst where, either of R5 and R6 independently could be in meta or para position and R5, R6 are independently hydrogen, hydroxyl, alkyl, alkanoyloxy, cyano nitro, alkylmercapto, amino, alkylamino, alkanamido, halo, trifluoromethyl, or taken together methylenedioxy, n is 0, 1, 2, 3, 4; R7 is hydrogen of alkyl of 1-7 carbon atom, R1 IH or alkyl of 1-3 carbon atom and R2 is alkyl 1-3 carbon atom, the dotted line represents optional unsaturation. Compounds of formulae IV, V and VI are respectively derivatives of compounds I, II and III respectively.
    Type: Application
    Filed: June 13, 2002
    Publication date: October 13, 2005
    Inventors: Jagdish Saigal, Rajender Gupta, Vilas Pandit, Anand Desai, Navneet Mehta, Shrikant Rane
  • Publication number: 20050119503
    Abstract: A process for producing Gabapentin, (1-(anminomethyl)-1-cyclohexaneacetic acid) from Gabapentin hydrochloride salt. In the process the Gabapentin hydrochloride is converted to Gabapentin using inorganic base such as Barium hydroxide. Gabapentin hydrochloride is converted to Gabapentin sulfate which in turn is converted to free base using Barium hydroxide. The process is directed to improvement in the manufacture of Gabapentin which would be industrially feasible and effective Gabapentin obtained following the process of the invention is suitable as a drug especially in the treatment of cerebral diseases such as epilepsy. The above process involves simple steps and avoid the problems of the known art. In particular the process avoids severe conditions and/or complexities and can be readily adopted for industrial application. The process provides for good yield and does not involve lengthy extended process steps. It is cost-effective and can be carried out involving simple ingredients and steps of manufacture.
    Type: Application
    Filed: November 18, 2002
    Publication date: June 2, 2005
    Inventors: Jagdish Saigal, Rajender Gupta, Rajesh Naik, Araddy Rajshekhar, Rajesh Joshi