Patents by Inventor Barun Kumar Mall

Barun Kumar Mall 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 the production of fly ash slurry
    Patent number: 6702890
    Abstract: The present invention describes an improved method for forming fly ash slurry by mixing fly ash and water with an additive containing 0.5-2 wt % ammonium salt of humic acid and 0.03 to 0.05 wt % tannin extract. The product slurry does not require large amount of water for transport to storage space due to its enhanced viscosity and stability.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: March 9, 2004
    Assignee: Council of Scientific and Industrial Research
    Inventors: Sukuru Ramakrishna Rao, Swapan Kumar Ghosh, Sibendra Kumar Basu, Barun Kumar Mall, Shreekant Verma, Gulab Singh, Satinath Mazumdar
  • Process for the production of fly ash slurry
    Publication number: 20020143227
    Abstract: The present invention describes an improved method for forming fly ash slurry by mixing fly ash and water with an additive containing 0.5-2 wt % ammonium salt of humic acid and 0.03 to 0.05 wt % tannin extract. The product slurry does not require large amount of water for transport to storage space due to its enhanced viscosity and stability.
    Type: Application
    Filed: April 8, 2002
    Publication date: October 3, 2002
    Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Sukuru Ramakrishna Rao, Swapan Kumar Ghosh, Sibendra Kumar Basu, Barun Kumar Mall, Shreekant Verma, Gulab Singh, Satinath Mazumdar
  • Process for the production of a fly ash slurry
    Patent number: 6419620
    Abstract: The present invention describes an improved method for forming fly ash slurry by mixing fly ash and water with an additive containing 0.5-2 wt % ammonium salt of humic acid and 0.03 to 0.05 wt % tannin extract. The product slurry does not require large amount of water for transport to storage space due to its enhanced viscosity and stability.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: July 16, 2002
    Assignee: Coouncil of Scientific and Industrial Research
    Inventors: Sukuru Ramakrishna Rao, Swapan Kumar Ghosh, Sibcndra Kumar Basu, Barun Kumar Mall, Shreekant Verma, Gulab Singh, Satinath Mazumdar