Patents by Inventor Paresh Laxmikant Dhepe

Paresh Laxmikant Dhepe 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).

  • Publication number: 20230295102
    Abstract: The present invention provides a process for the synthesis of furan dicarboxylic acid (FDCA) from glucose or crude hydroxy methyl furfural (HMF) using mixed metal oxides catalyst. The present invention further provides a process for preparation of the mixed metal oxides catalyst.
    Type: Application
    Filed: August 10, 2021
    Publication date: September 21, 2023
    Inventors: Paresh Laxmikant DHEPE, Kalyani Gajananrao SONONE, Priya Laxmanrao LOKHANDE
  • Publication number: 20230078491
    Abstract: The present invention provides an effective and selective process for the depolymerization of polyethylene terephthalate (PET), polyethylene furanoate (PEF), polylactic acid, polycarbonates, polyethers and polyamides into pure and high yielding valorized products by combining the glycolysis-hydrolysis reactions using a homogeneous acidic ionic liquid (AIL) catalyst, resulting in excellent polymer conversion.
    Type: Application
    Filed: February 24, 2021
    Publication date: March 16, 2023
    Inventors: Paresh LAXMIKANT DHEPE, Manuraj KALLUMKAL
  • Patent number: 9988413
    Abstract: The present invention discloses one pot process for the conversion of hemicellulose into C5 sugars using ionic liquids in water media.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: June 5, 2018
    Assignee: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Paresh Laxmikant Dhepe, Babasaheb Mansub Matsagar
  • Patent number: 9550710
    Abstract: The present invention discloses a process for depolymerization of lignin to yield substituted phenolic monomers using Brönsted ionic liquid as catalyst under mild reaction conditions to obtain an overall yield of monomers up to 97%.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: January 24, 2017
    Assignee: Council of Scientific and Industrial Research
    Inventors: Paresh Laxmikant Dhepe, Ashutosh Anant Kelkar, Babasaheb Mansub Matsagar, Sandip Kumar Singh
  • Publication number: 20160347781
    Abstract: The present invention discloses one pot process for the conversion of hemicellulose into C5 sugars using ionic liquids in water media.
    Type: Application
    Filed: January 21, 2015
    Publication date: December 1, 2016
    Inventors: PARESH LAXMIKANT DHEPE, BABASAHEB MANSUB MATSAGAR
  • Publication number: 20160168062
    Abstract: The present invention discloses a process for depolymerization of lignin to yield substituted phenolic monomers using Brönsted ionic liquid as catalyst under mild reaction conditions to obtain an overall yield of monomers up to 97%.
    Type: Application
    Filed: May 9, 2014
    Publication date: June 16, 2016
    Inventors: Paresh Laxmikant Dhepe, Ashutosh Anant Kelkar, Babasaheb Mansub Matsagar, Sandip Kumar Singh
  • Patent number: 9267181
    Abstract: The present invention provides a single step hydrolytic process for the conversion of lignocellulose, into value added chemicals wherein said process is catalyzed by at least one heterogeneous solid acid catalyst selected from a group comprising of zeolites, zeolites with Si/metal, mesoporous silica, oxides and phosphates, clays, ion-exchange resins, heteropolyacids, various sulfates, phosphates, selenates, crystalline materials and amorphous materials.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: February 23, 2016
    Assignee: Council of Scientific and Industrial Research
    Inventors: Paresh Laxmikant Dhepe, Ramakanta Sahu
  • Patent number: 9051244
    Abstract: The invention provides for a process for the depolymerization of lignin in an inert atmosphere to result in substituted phenolic monomer compounds. The process is catalyzed by heterogeneous solid acid catalysts and is carried out in batch or continuous mode.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: June 9, 2015
    Assignee: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Paresh Laxmikant Dhepe, Deepa Ayillath Kutteri
  • Patent number: 8945309
    Abstract: A catalyst for cellulose hydrolysis and/or the reduction of hydrolysis products, in which a transition metal of group 8 to 11 is supported on a solid support. A method of producing sugar alcohols comprising: hydrolyzing cellulose in the presence of the catalyst in a hydrogen-containing atmosphere with pressurization; and reducing the hydrolysis product of cellulose. Provided are a catalyst for use in the production of sugar alcohols by the hydrolysis and hydrogenation of cellulose that affords easy separation of catalyst and product, and that does not require pH adjustment, acid or alkali neutralization, or activation of the catalyst during reuse, and a method of producing sugar alcohols from cellulose employing this catalyst.
    Type: Grant
    Filed: March 1, 2007
    Date of Patent: February 3, 2015
    Assignee: National University Corporation Hokkaido University
    Inventors: Atsushi Fukuoka, Paresh Laxmikant Dhepe
  • Publication number: 20120302796
    Abstract: The invention provides for a process for the depolymerization of lignin in an inert atmosphere to result in substituted phenolic monomer compounds. The process is catalysed by heterogeneous solid acid catalysts and is carried out in batch or continuous mode.
    Type: Application
    Filed: May 9, 2012
    Publication date: November 29, 2012
    Inventors: Paresh Laxmikant DHEPE, Deepa Ayillath Kutteri
  • Publication number: 20120192860
    Abstract: The present invention provides a single step hydrolytic process for the conversion of lignocellulose, into value added chemicals wherein said process is catalyzed by at least one heterogeneous solid acid catalyst selected from a group comprising of zeolites, zeolites with Si/metal, mesoporous silica, oxides and phosphates, clays, ion-exchange resins, heteropolyacids, various sulfates, phosphates, selenates, crystalline materials and amorphous materials.
    Type: Application
    Filed: January 27, 2010
    Publication date: August 2, 2012
    Inventors: Paresh Laxmikant Dhepe, Ramakanta Sahu