Patents by Inventor Shrikant Madhukar Ghike

Shrikant Madhukar Ghike 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 recovery of pure acrylonitrile
    Patent number: 7128815
    Abstract: Process for recovery of highly pure acrylonitrile by quickly vaporizing under vacuum the contaminated acrylonitrile as well as fresh acrylonitrile followed by contacting with hydrophilic agents in an extractive distillation column using plural number of packed sections.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: October 31, 2006
    Assignee: Council of Scientific and Industrial Research
    Inventors: Prashant Purushottam Barve, Shrikant Madhukar Ghike, Ravindra William Shinde, Milind Yashwant Gupte, Chandrashekhar Narayan Joshi
  • Process for recovery of pure acrylonitrile
    Publication number: 20040188236
    Abstract: Process for recovery of highly pure acrylonitrile by quickly vaporizing under vacuum the contaminated acrylonitrile as well as fresh acrylonitrile followed by contacting with hydrophilic agents in an extractive distillation column using plural number of packed sections.
    Type: Application
    Filed: March 25, 2003
    Publication date: September 30, 2004
    Inventors: Prashant Purushottam Barve, Shrikant Madhukar Ghike, Ravindra William Shinde, Milind Yashwant Gupte, Chandrashekhar Narayan Joshi
  • Process for the preparation of 2-Methyl-2-propene-1-sulfonic acid, sodium salt
    Patent number: 6660882
    Abstract: The present invention provides a process for the preparation of highly pure 2-Methyl-2-propene-1-sulfonic acid, sodium salt in high yield, with very low iron content, by the reaction of distilled sulfur trioxide complexed with a Lewis base in a halogentated solvent, the unreacted sulfur trioxide vapors being removed from the reactor before the mixture is treated with liquefied isobutylene, and neutralization by a base with an iron content within the range of 0 to 20 ppm.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: December 9, 2003
    Assignee: Council of Scientific and Industrial Research
    Inventors: Prashant Purushottam Barve, Sunil Shankar Joshi, Ravindra William Shinde, Shrikant Madhukar Ghike, Milind Yashwant Gupte, Chandrashekhar Narayan Joshi, Raghavendra Venkatrao Naik
  • Process for the preparation of 2-Methyl-2-propene-1-sulfonic acid, sodium salt
    Publication number: 20030176731
    Abstract: The present invention provides a process for the preparation of highly pure 2-Methyl-2-propene-1-sulfonic acid, sodium salt in high yield, with very low iron content, by the reaction of distilled sulfur trioxide complexed with a Lewis base in a halogentated solvent, the unreacted sulfur trioxide vapors being removed from the reactor before the mixture is treated with liquefied isobutylene, and neutralization by a base with an iron content within the range of 0 to 20 ppm.
    Type: Application
    Filed: March 18, 2002
    Publication date: September 18, 2003
    Inventors: Prashant Purushottam Barve, Sunil Shankar Joshi, Ravindra William Shinde, Shrikant Madhukar Ghike, Milind Yashwant Gupte, Chandrashekhar Narayan Joshi, Raghavendra Venkatrao Naik
  • Process for the preparation of 2-acrylamido-2-methyl-1-propanesulfonic acid
    Patent number: 6504050
    Abstract: The present invention provides a process for the preparation of highly pure 2-acrylamido-2-methyl-1-propanesulfonic acid in high yield, with improved appearance, by the reaction of acrylonitrile with more than 98% sulfuric acid or oleum and liquefied isobutylene in presence of weak inorganic acids or organic sulfonic acids.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: January 7, 2003
    Assignee: Council of Scientific and Industrial Research
    Inventors: Prashant Purushottam Barve, Sunil Shankar Joshi, Ravindra William Shinde, Milind Yashwant Gupte, Chandrashekhar Narayan Joshi, Shrikant Madhukar Ghike, Raghavendra Venkatrao Naik, Rajendra Anantrao Kulkarni, Aruna Narayan Bote