Patents by Inventor Shirish Thakre

Shirish Thakre 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).

  • A METHOD OF PREPARING DOPE DYED LYOCELL FIBRE
    Publication number: 20230147314
    Abstract: A process for obtaining a dope dyed lyocell fibre can include the steps of (a) mixing one or more pigment with an aqueous organic solvent to obtain a slurry; (b) applying vacuum to said slurry to remove excess water content to obtain a masterbatch (c) mixing the masterbatch obtained in step (b) to a lyocell dope to obtain a pigmented dope; and (d) extruding said pigmented dope of step (c) through a spinneret to form dope dyed lyocell fiber.
    Type: Application
    Filed: February 18, 2021
    Publication date: May 11, 2023
    Inventors: Vivek GANVIR, Santosh REVANKAR, Dhirendra SINGH, Shirish THAKRE, Sachin JADHAV
  • METHOD FOR PREPARING CELLULOSE DOPE
    Publication number: 20210198384
    Abstract: The invention relates to a method for preparing a cellulose dope comprising mixing and dissolving the cellulosic raw material in dilute and concentrated aqueous organic solvent in a two-stage process to form a homogeneous slurry, followed by heating the homogeneous slurry to obtain a cellulose dope containing 11% to 20% cellulose by weight. The invention also relates to a cellulose dope comprising 11% to 20% cellulose by weight and 73% to 79% aqueous organic solvent wherein the concentration of the cellulosic and metallic impurities in the cellulose dope shows a percent reduction of 20% to 50% from the cellulosic raw material.
    Type: Application
    Filed: August 20, 2020
    Publication date: July 1, 2021
    Inventors: Vivek GANVIR, Madan Kumar Singh, Sachin Jadhav Gajanan, Yogesh Shinde, Shirish Thakre
  • Method for preparing cellulose dope
    Patent number: 11008406
    Abstract: The invention relates to a method for preparing a cellulose dope comprising mixing and dissolving the cellulosic raw material in dilute and concentrated aqueous organic solvent in a two-stage process to form a homogeneous slurry, followed by heating the homogeneous slurry to obtain a cellulose dope containing 11% to 20% cellulose by weight. The invention also relates to a cellulose dope comprising 11% to 20% cellulose by weight and 73% to 79% aqueous organic solvent wherein the concentration of the cellulosic and metallic impurities in the cellulose dope shows a percent reduction of 20% to 50% from the cellulosic raw material.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: May 18, 2021
    Inventors: Vivek Ganvir, Madan Kumar Singh, Sachin Jadhav Gajanan, Yogesh Shinde, Shirish Thakre
  • METHOD FOR PREPARING CELLULOSE DOPE
    Publication number: 20170362342
    Abstract: The invention relates to a method for preparing a cellulose dope comprising mixing and dissolving the cellulosic raw material in dilute and concentrated aqueous organic solvent in a two-stage process to form a homogeneous slurry, followed by heating the homogeneous slurry to obtain a cellulose dope containing 11% to 20% cellulose by weight. The invention also relates to a cellulose dope comprising 11% to 20% cellulose by weight and 73% to 79% aqueous organic solvent wherein the concentration of the cellulosic and metallic impurities in the cellulose dope shows a percent reduction of 20% to 50% from the cellulosic raw material.
    Type: Application
    Filed: August 17, 2017
    Publication date: December 21, 2017
    Inventors: Vivek Ganvir, Madan Kumar Singh, Sachin Jadhav Gajanan, Yogesh Shinde, Shirish Thakre