Patents by Inventor Surbhi Semwal

Surbhi Semwal 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 recovering higher sugar from biomass
    Patent number: 11193177
    Abstract: An advantageous process for pre-treating lignocellulosic biomass to hydrolysable polysaccharide enriched biomass with reduced amount of inhibitors of catalysis comprising steps of: providing a feedstock comprising cellulosic biomass; chopping of cellulosic biomass to have a cellulosic biomass feed material of uniform size; feeding of uniform sized feed material to a horizontal counter current extraction unit; removing excess of water from the feed material obtained from the extraction unit; soaking the extruded feed material obtained from the extraction unit; optionally removing excess of water from the feed material obtained after acid soaking; steam pre-treating the feed material obtained after removing excess of water from the acid soaked feed material; neutralizing the slurry obtained from the steam pre-treating; and optionally saccharifying the neutralized slurry.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: December 7, 2021
    Assignees: Indian Oil Corporation Limited, Department of Biotechnology
    Inventors: Ravindra Kumar, Surbhi Semwal, Alok Satlewal, Ravi Prakash Gupta, Suresh Kumar Puri, Sankara Sri Venkata Ramakumar
  • PROCESS FOR RECOVERING HIGHER SUGAR FROM BIOMASS
    Publication number: 20200002778
    Abstract: An advantageous process for pre-treating lignocellulosic biomass to hydrolysable polysaccharide enriched biomass with reduced amount of inhibitors of catalysis comprising steps of: providing a feedstock comprising cellulosic biomass; chopping of cellulosic biomass to have a cellulosic biomass feed material of uniform size; feeding of uniform sized feed material to a horizontal counter current extraction unit; removing excess of water from the feed material obtained from the extraction unit; soaking the extruded feed material obtained from the extraction unit; optionally removing excess of water from the feed material obtained after acid soaking; steam pre-treating the feed material obtained after removing excess of water from the acid soaked feed material; neutralizing the slurry obtained from the steam pre-treating; and optionally saccharifying the neutralized slurry.
    Type: Application
    Filed: June 25, 2019
    Publication date: January 2, 2020
    Applicants: Indian Oil Corporation Limited, Department Of Biotechnology
    Inventors: Ravindra KUMAR, Surbhi SEMWAL, Alok SATLEWAL, Ravi Prakash GUPTA, Suresh Kumar PURI, Sankara Sri Venkata RAMAKUMAR
  • Process for removal of metals from oils/fats
    Patent number: 8802879
    Abstract: The invention describes process for demetallation of vegetable oils and animal fats to reduce metal content below 1 ppm to make them suitable for hydroprocessing feedstocks. The process comprises acid treatment with very low concentration of acids, utilizing synergistic effect of phosphoric acid and citric acid, followed by counter-current treatment with clay without intermediate step of water washing and treatment with ion exchange resin.
    Type: Grant
    Filed: July 4, 2011
    Date of Patent: August 12, 2014
    Assignee: Indian Oil Corporation Ltd.
    Inventors: Sarvesh Kumar, Ravi B. Kumar, Alok Sharma, Brijesh Kumar, Surbhi Semwal, Ajay Kumar Arora, Suresh Kumar Puri, Saeed Ahmed, Vivekanand Kagdiyal, Santanam Rajagopal, Ravinder Kumar Malhotra, Anand Kumar
  • PROCESS FOR REMOVAL OF METALS FROM OILS/FATS
    Publication number: 20130197251
    Abstract: The invention describes process for demetallation of vegetable oils and animal fats to reduce metal content below 1 ppm to make them suitable for hydroprocessing feedstocks. The process comprises acid treatment with very low concentration of acids, utilizing synergistic effect of phosphoric acid and citric acid, followed by counter-current treatment with clay without intermediate step of water washing and treatment with ion exchange resin.
    Type: Application
    Filed: July 4, 2011
    Publication date: August 1, 2013
    Applicant: INDIAN OIL CORPORATION LTD.
    Inventors: Sarvesh Kumar, Ravi B. Kumar, Alok Sharma, Brijesh Kumar, Surbhi Semwal, Ajay Kumar Arora, Suresh Kumar Puri, Saeed Ahmed, Vivekanand Kagdiyal, Santanam Rajagopal, Ravinder Kumar Malhotra, Anand Kumar