Patents by Inventor Somendra Nath Roy

Somendra Nath Roy 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).

  • Apparatus for the preparation of arsenic free water
    Patent number: 7309425
    Abstract: The present invention relates to a process for the preparation of arsenic free water and an apparatus therefor. The present invention also relates to a porous ceramic useful for pressure filtration in order to produce arsenic free water. The present invention particularly relates to a process for preparing arsenic free (<10 ppb) water from arsenic contaminated ground water and apparatus therefor.
    Type: Grant
    Filed: August 15, 2005
    Date of Patent: December 18, 2007
    Assignee: Council of Scientific and Industrial Research
    Inventors: Sibdas Bandyopadhya, Dipali Kundu, Somendra Nath Roy, Bishnupada Ghosh, Himadri Sekhar Maiti
  • Process for preparing water having an arsenic level of less than 10 PPB
    Patent number: 7014771
    Abstract: The present invention relates to a process for the preparation of arsenic free water and an apparatus therefor. The present invention also relates to a porous ceramic useful for pressure filtration in order to produce arsenic free water. The present invention particularly relates to a process for preparing arsenic free (<10 ppb) water from arsenic contaminated ground water and apparatus therefor.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: March 21, 2006
    Assignee: Council of Scientific and Industrial Research
    Inventors: Sibdas Bandyopadhyay, Dipali Kundu, Somendra Nath Roy, Bishnupada Ghosh, Himadri Sekhar Maiti
  • Process for the preparation of arsenic free water, apparatus therefor, method for the manufacture of porous ceramics for use in pressure filtration to produce arsenic free water
    Publication number: 20030183579
    Abstract: The present invention relates to a process for the preparation of arsenic free water and an apparatus therefor. The present invention also relates to a porous ceramic useful for pressure filtration in order to produce arsenic free water. The present invention particularly relates to a process for preparing arsenic free (<10 ppb) water from arsenic contaminated ground water and apparatus therefor.
    Type: Application
    Filed: March 29, 2002
    Publication date: October 2, 2003
    Inventors: Sibdas Bandyopadhya, Dipali Kundu, Somendra Nath Roy, Bishnupada Ghosh, Himadri Sekhar Maiti