Patents by Inventor Ravindra Gadhe

Ravindra Gadhe 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 preparation of high flash point frothing agent
    Patent number: 9919318
    Abstract: The present invention discloses a process for preparing high flash point frothing agent by treating an aldehyde with an alcohol in the presence of an acid catalyst at elevated temperature and further adding a carbonate salt to obtain the frothing agent and polymer.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: March 20, 2018
    Assignee: Godavari Biorefineries Limited
    Inventors: Ravindra Gadhe, Shanul Pagar, Sangeeta Srivastava
  • A Process for Preparation of High Flash Point Frothing Agent
    Publication number: 20170173595
    Abstract: The present invention discloses a process for preparing high flash point frothing agent by treating an aldehyde with an alcohol in the presence of an acid catalyst at elevated temperature and further adding a carbonate salt to obtain the frothing agent and polymer.
    Type: Application
    Filed: March 27, 2015
    Publication date: June 22, 2017
    Applicant: Godavari Biorefineries Limited
    Inventors: Ravindra Gadhe, Shanul Pagar, Sangeeta Srivastava
  • Process for preparation of unsaturated ketone
    Patent number: 9670123
    Abstract: The present invention relates to a process for preparing unsaturated ketone by using an ion exchange polymer as a catalyst. The process comprises the steps of mixing an aldehyde with a ketone and passing the mixture of aldehyde and ketone through a fixed bed catalytic reactor comprising the ion exchange polymer at a temperature of at least 60 degree C. at atmospheric pressure for a retention period of 30-50 min. The unsaturated ketone obtained from the reaction is purified by distillation and 99.5% pure unsaturated ketone with a yield of not less than 80% is obtained.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: June 6, 2017
    Assignee: GODAVARI BIOREFINERIES LIMITED
    Inventor: Ravindra Gadhe
  • A PROCESS FOR PREPARATION OF UNSATURATED KETONE
    Publication number: 20160207861
    Abstract: The present invention relates to a process for preparing unsaturated ketone by using an ion exchange polymer as a catalyst. The process comprises the steps of mixing an aldehyde with a ketone and passing the mixture of aldehyde and ketone through a fixed bed catalytic reactor comprising the ion exchange polymer at a temperature of at least 60 degree C. at atmospheric pressure for a retention period of 30-50 min. The unsaturated ketone obtained from the reaction is purified by distillation and 99.5% pure unsaturated ketone with a yield of not less than 80% is obtained.
    Type: Application
    Filed: August 21, 2014
    Publication date: July 21, 2016
    Applicant: Godavari Biorefineries Limited
    Inventor: Ravindra Gadhe