Patents by Inventor Narayan Das Chaurasiya

Narayan Das Chaurasiya 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 isolation of withaferin-A from plant materials and products therefrom
    Patent number: 7108870
    Abstract: The present invention relates to an improved process of analytical and quantitative isolation of withaferin-A from Withania somnifera (Sanskrit: Ashwagandha, English: winter cherry) and other plants and products therefrom, said method comprising steps of selecting most appropriate extraction medium composition, with extraction solvent system consisting of a defined admixture of water and alcohol in a range of proportion of alcohol within a narrow range of (methanol, ethanol etc.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: September 19, 2006
    Assignee: Council of Scientific & Industrial Research
    Inventors: Rajender Singh Sangwan, Narayan Das Chaurasiya, Laxmi Narayan Misra, Payare Lal, Girish Chandra Uniyal, Neelam Singh Sangwan, Avdhesh Kumar Srivastava, Krishan Avtar Suri, Ghulam Nabi Qazi, Rakesh Tuli