Patents by Inventor Boyapati Manoranjan Choudhary

Boyapati Manoranjan Choudhary 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).

  • Method for adsorption and reduction of hexavalent chromium by using ferrous-saponite
    Patent number: 7273557
    Abstract: The present invention relates to the development of an improved methodology for adsorption and subsequent reduction of hexavalent chromium aimed at the total removal of hexavalent chromium in water, which comprises, reacting dichromate solutions with natural ferrous-saponite clays at temperature 50 to 200° C. for the period of 1 to 3.0 hours.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: September 25, 2007
    Assignee: Council of Scientific and Industrial Research
    Inventors: Gopalakrishnarao Parthasarathy, Bojja Sreedhar, Boyapati Manoranjan Choudhary
  • Process for preparing quaternary ammonium tribromides
    Patent number: 7005548
    Abstract: The present invention relates to an economical and environmentally clean process for the preparation of high quality quaternary ammonium tribromides by oxidation of bromide (Br?) in an acidic medium by a biomimetic process involving transition metal ion mediated activation of hydrogen peroxide.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: February 28, 2006
    Assignee: Council of Scientific and Industrial Research
    Inventors: Mihir Kanti Choudhuri, Upasana Bora, Sanjay Kumar Dehury, Deepa Dey, Siddhartha Sankar Dhar, Wancydora Kharmawphlang, Boyapati Manoranjan Choudhary, Lakshmi Kantam Mannepalli
  • Process for preparing pyridinium fluorochromate (VI)
    Patent number: 6852859
    Abstract: The present invention relates to an economic and environmentally clean process for the preparation of the pyridinium salt of fluorotrioxo-chromate (VI), PFC, having the chemical formula C5H5NH[CrO3F], by direct reaction of stoichiometric amounts of hydrofluoric acid, chromium trioxide and pyridine demonstrating approxomately 100% atom economy.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: February 8, 2005
    Assignee: Council of Scientific and Industrial Research
    Inventors: Mihir Kanti Choudhuri, Sanjay Kumar Dehury, Upasana Bora, Jayashree Nath, Boyapati Manoranjan Choudhary, Lakshmi Kantam Mannepalli
  • Process for preparing pyridinium fluorochromate (VI)
    Publication number: 20040133003
    Abstract: The present invention relates to a novel, economic and environmentally clean process for pyridinium salt of fluorotrioxo-chromate (VI), PFC, having the chemical formula C5H5NH[CrO3F], by direct reaction of stoichiometric amounts of hydrofluoric acid, chromium trioxide and pyridine demonstrating approximately 100% atom economy.
    Type: Application
    Filed: December 31, 2002
    Publication date: July 8, 2004
    Applicant: Council of Scientific and Industrial Research
    Inventors: Mihir Kanti Choudhuri, Sanjay Kumar Dehury, Upasana Bora, Jayashree Nath, Boyapati Manoranjan Choudhary, Lakshmi Kantam Mannepalli
  • Process for preparing quaternary ammonium tribromides
    Publication number: 20040126308
    Abstract: The present invention relates to an economical and environmentally clean process for the preparation of high quality quaternary ammonium tribromides by oxidation of bromide (Br−) in an acidic medium by a biomimetic process involving transition metal ion mediated activation of hydrogen peroxide.
    Type: Application
    Filed: December 31, 2002
    Publication date: July 1, 2004
    Applicant: Council of Scientific and Industrial Research
    Inventors: Mihir Kanti Choudhuri, Upasana Bora, Sanjay Kumar Dehury, Deepa Dey, Siddhartha Sankar Dhar, Wancydora Kharmawphlang, Boyapati Manoranjan Choudhary, Lakshmi Kantam Mannepalli