Patents by Inventor Ashiwani Kumar Gupta

Ashiwani Kumar 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).

  • BLENDED FROTHER FOR PRODUCING LOW ASH CONTENT CLEAN COAL THROUGH FLOTATION
    Publication number: 20100181520
    Abstract: An improved frothing agent adaptable to froth flotation process to enhance coal selectivity for separation and efficiency of the forth flotation process comprises:- A blended mixture of Ketone (2,6 Dimethl-4-Heptanone) 85-89% (Wr %) Ester molecule(Tetrahydrofurfuryl acetate) 10-12% (Wt %) Epoxide conditioner (1,2-Epoxydodecane) 0.25-0.30% (Wt %) Water 4.75-5.
    Type: Application
    Filed: August 19, 2008
    Publication date: July 22, 2010
    Applicant: Tata Steel Limited
    Inventors: Ashiwani Kumar Gupta, Pradip Kumar Banerjee, Debashish Bhattacharjee