Patents by Inventor Parthasarathi Dastidar

Parthasarathi Dastidar 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).

  • Patent number: 7220435
    Abstract: The present invention relates to a simple, economical, and efficient cyclic process for producing rhombic dodecahedron shaped glycine enriched, free flowing common salt from brine, said process comprising steps of adding glycine of concentration ranging between 10 to 25% to the saturated brine, evaporating the saturated brine containing glycine to obtain crystals having high content of glycine, with mother liquor, washing the crystals with saturated brine to obtain rhombic dodecahedron shaped glycine enriched common salt having glycine content ranging between 0.5 to 1.0% and a washed brine, combining the mother liquor and the washed brine to obtain resulting brine, subjecting the resultant brine to solar evaporation, and repeating the steps of (iii) to (v) to obtain rhombic dodecahedron shaped glycine enriched common salt from brine with glycine concentration ranging between 0.5 to 1.0%.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: May 22, 2007
    Assignees: Council of Scientific & Industrial Research, Hindustan Lever Limited
    Inventors: Parthasarathi Dastidar, Pushpito Kumar Ghosh, Amar Ballabh, Darshak Rameshbhai Trivedi, Amitava Pramanik, Velayudhan Nair Gopa Kumar
  • Publication number: 20050136131
    Abstract: The present invention relates to a simple, economical, and efficient cyclic process for producing rhombic dodecahedron shaped glycine enriched, free flowing common salt from brine, said process comprising steps of adding glycine of concentration ranging between 10 to 25% to the saturated bnne, evaporating the saturated brine containing glycine to obtain crystals having high content of glycine, with mother liquor, washing the crystals with saturated brine to obtain rhombic dodecahedron shaped glycine enriched common salt having glycine content ranging between 0.5 to 1.0% and a washed brine, combining the mother liquor and the washed brine to obtain resulting brine, subjecting the resultant brine to solar evaporation, and repeating the steps of (iii) to (v) to obtain rhombic dodecahedron shaped glycine enriched common salt from brine with glycine concentration ranging between 0.5 to 1.0%.
    Type: Application
    Filed: December 23, 2003
    Publication date: June 23, 2005
    Applicants: COUNCIL OF SCIENTIFIC AND INDUSTRIAL, HINDUSTAN LEVER LIMITED
    Inventors: Parthasarathi Dastidar, Pushpito Ghosh, Amar Ballabh, Darshak Trivedi, Amitava Pramanik, Velayudhan Kumar