Patents by Inventor Biswanath Sarkar

Biswanath Sarkar 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 enhancing yield of sodium aluminosilicate molecular sieves during synthesis
    Publication number: 20070059238
    Abstract: The present invention relates to a process for enhancing the yield of molecular sieve zeolite during the synthesis from a sodium aluminosilicate reaction mixture, said process comprising the step of adding at an intermediate stage of crystallization a source of aluminum to the sodium aluminosilicate reaction mixture and allowing the mixture to crystallize.
    Type: Application
    Filed: May 30, 2006
    Publication date: March 15, 2007
    Inventors: Ram Thakur, Mohan Kuvettu, Biswanath Sarkar, Venkatachalam Krishnan, Mitra Patel, Sanjay Ray, Gopal Ravichandran, Satish Makhija, Sobhan Ghosh
  • Process for enhancing yield of sodium aluminosilicate molecular sieves during synthesis
    Publication number: 20050158237
    Abstract: The present invention relates to a process for enhancing the yield of molecular sieve zeolite during the synthesis from a sodium aluminosilicate reaction mixture, said process comprising the step of adding at an intermediate stage of crystallization a source of aluminum to the sodium aluminosilicate reaction mixture and allowing the mixture to crystallize.
    Type: Application
    Filed: January 16, 2004
    Publication date: July 21, 2005
    Applicant: INDIAN OIL CORPORATION LIMITED
    Inventors: Ram Thakur, Mohan Kuvettu, Biswanath Sarkar, Venkatachalam Krishnan, Mitra Patel, Sanjay Ray, Gopal Ravichandran, Satish Makhija, Sobhan Ghosh
  • Process for preparing sodium silicate alkali solution depleted of sodium salt and enriched in silica
    Patent number: 6864202
    Abstract: The present invention relates to an improved process for obtaining sodium silicate alkali solution depleted of sodium salt and enriched in silica from a mother liquor recovered after isolation of molecular sieves and more particularly, the present invention relates to a process for recycling mother liquor obtained after the isolation of molecular sieves for the preparation of fresh molecular sieves or as a binder for producing Fluid Catalytic Cracking (FCC) catalyst.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: March 8, 2005
    Assignee: Indian Oil Corporation Limited
    Inventors: Biswanath Sarkar, Ram Mohan Thakur, Nagesh Samant, Mohan Kuvettu Prabhu, Ravichandran Gopal, Mitra Bhanu Patel, Sanjay Kumar Ray, Krishnan Venkatachalam, Satish Makhija, Sobhan Ghosh
  • Process for preparing sodium silicate alkali solution depleted of sodium salt and enriched in silica
    Publication number: 20040053773
    Abstract: The present invention relates to an improved process for obtaining sodium silicate alkali solution depleted of sodium salt and enriched in silica from a mother liquor recovered after isolation of molecular sieves and more particularly, the present invention relates to a process for recycling mother liquor obtained after the isolation of molecular sieves for the preparation of fresh molecular sieves or as a binder for producing Fluid Catalytic Cracking (FCC) catalyst.
    Type: Application
    Filed: October 29, 2002
    Publication date: March 18, 2004
    Inventors: Biswanath Sarkar, Ram Mohan Thakur, Nagesh Samant, Mohan Kuvettu Prabhu, Ravichandran Gopal, Mitra Bhanu Patel, Sanjay Kumar Ray, Krishnan Venkatachalam, Satish Makhija, Sobhan Ghosh