Patents by Inventor Ajay SHANKAR

Ajay SHANKAR 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).

  • Ferrofluid-MWCNT hybrid nanocomposite in liquid state
    Patent number: 9704628
    Abstract: A water based double surfacted ferrofluid having magnetite nanoparticles (2-18 nm) coated with primary and secondary surfactants is synthesized. On the other hand, an aqueous dispersion of functionalized MWCNT (diameter=14-18 ?m, length=1.6-2.5 ?m) is prepared by acid treatment. A hybrid solutions in different v/v ratios yielded stable dispersions having both nanoparticles and nanotubes in itself behave as one system. The synthesized hybrid fluid show magnetic response and self-sustained homogeneity of in presence of magnetic field. In addition, the hybrid fluids exhibits a long term sedimentation and magnetic stability which enables one to use them for various applications like MRI, EMI shielding, energy conversion etc.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: July 11, 2017
    Assignee: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Rajendra Prasad Pant, Ajay Shankar, Komal Jain, Sonia, Mahesh Chand
  • FERROFLUID - MWCNT HYBRID NANOCOMPOSITE IN LIQUID STATE
    Publication number: 20150371776
    Abstract: A water based double surfacted ferrofluid having magnetite nanoparticles (2-18 nm) coated with primary and secondary surfactants is synthesized. On the other hand, an aqueous dispersion of functionalized MWCNT (diameter=14-18 ?m, length=1.6-2.5 ?m) is prepared by acid treatment. A hybrid solutions in different v/v ratios yielded stable dispersions having both nanoparticles and nanotubes in itself behave as one system. The synthesized hybrid fluid show magnetic response and self-sustained homogeneity of in presence of magnetic field. In addition, the hybrid fluids exhibits a long term sedimentation and magnetic stability which enables one to use them for various applications like MRI, EMI shielding, energy conversion etc.
    Type: Application
    Filed: June 23, 2015
    Publication date: December 24, 2015
    Inventors: Rajendra Prasad PANT, Ajay SHANKAR, Komal JAIN, . SONIA, Mahesh CHAND
  • Sorafenib dimethyl sulphoxide solvate
    Patent number: 8618305
    Abstract: The present invention provides dimethyl sulphoxide solvate of 4-(4-{3-[4-chloro-3 -(trifluoromethyl)phenyl]ureido}phenoxy)-N2-methylpyridine-2-carboxamide, process for its preparation, pharmaceutical composition comprising it and its use for the treatment of cancer. The present invention also provides a novel HPLC method for the identification, quantification and isolation of related substances of sorafenib.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: December 31, 2013
    Assignee: Ranbaxy Laboratories Limited
    Inventors: Jagdev Singh Jaryal, Swargam Sathyanarayana, Rajesh Kumar Thaper, Mohan Prasad, Sachin Deorao Zade, Ajay Shankar Singh
  • SORAFENIB DIMETHYL SULPHOXIDE SOLVATE
    Publication number: 20130210865
    Abstract: The present invention provides dimethyl sulphoxide solvate of 4-(4-{3-[4-chloro-3-(trifluoromethyl)phenyl]ureido}phenoxy)-N2-methylpyridine-2-carboxamide, process for its preparation, pharmaceutical composition comprising it and its use for the treatment of cancer. The present invention also provides a novel HPLC method for the identification, quantification and isolation of related substances of sorafenib.
    Type: Application
    Filed: January 28, 2011
    Publication date: August 15, 2013
    Applicant: RANBAXY LABORATORIES LIMITED
    Inventors: Jagdev Singh Jaryal, Swargam Sathyanarayana, Rajesh Kumar Thaper, Mohan Prasad, Sachin Deorao Zade, Ajay Shankar Sinch