Patents by Inventor Pratik Swarup Dash

Pratik Swarup Dash 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: 20230392078
    Abstract: The present disclosure relates to a method of producing metallurgical coke from a combination of non-coking and non-metallic carbon-based microwave susceptor. The method is energy efficient, economical, and environmentally friendly. The present disclosure also relates to metallurgical coke having improved coke quality, such as improved coke strength after reaction.
    Type: Application
    Filed: October 11, 2021
    Publication date: December 7, 2023
    Inventors: Bidyut DAS, Pratik Swarup DASH, Abhinav Kumar SONI, Ashish KORI
  • Publication number: 20220186020
    Abstract: The present disclosure relates to organic compound(s) (i.e., compound of formula I or compound of formula IA) and/or a composition including the organic compound(s) useful for utilization of non-coking coal in a blend including coking coal without deterioration of properties of coking coal, wherein the organic compound(s) is capable of releasing hydrogen in the plastic region of coal. The present disclosure provides a simple, economical, non-toxic and efficient method for the preparation of the organic polymer, and a method for utilization of non-coking coal in blend including coking coal without deterioration of the properties of coke.
    Type: Application
    Filed: March 8, 2020
    Publication date: June 16, 2022
    Inventors: Debjani Nag, Soumitra Ghorai, Ajinkya Meshram, Bidyut Das, Ranjan Kumar Singh, Pratik Swarup Dash, Binod Sharma
  • Patent number: 11242490
    Abstract: The present disclosure relates to a method for producing metallurgical coke from non-coking coal. The method comprising, densifying, the non-coking coal to form pellets. The densified pellets will be placed in a microwave oven within plurality of bricks and are subjected for pyrolysis. For carrying our pyrolysis, the pellets are carried out by heating, the pellets in the microwave oven at a predetermined temperature under an inert atmosphere at atmospheric pressure, and then the pellets are cooled in the microwave oven under the inert atmosphere. This process coverts non-coking coal to the metallurgical coke in a quicker time, and without use of any susceptors.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: February 8, 2022
    Assignees: The University of Nottingham, Tata Steel Limited
    Inventors: Bidyut Das, Sanjay Chandra, Atanu Ranjan Pal, Pratik Swarup Dash, Munish Sudan, Eleanor Binner, Christopher Dodds, Edward Henry Lester, Orla Williams, Samuel Kingman
  • Publication number: 20210040393
    Abstract: The present disclosure relates to a method for producing metallurgical coke from non-coking coal. The method comprising, densifying, the non-coking coal to form pellets. The densified pellets will be placed in a microwave oven within plurality of bricks and are subjected for pyrolysis. For carrying our pyrolysis, the pellets are carried out by heating, the pellets in the microwave oven at a predetermined temperature under an inert atmosphere at atmospheric pressure, and then the pellets are cooled in the microwave oven under the inert atmosphere. This process coverts non-coking coal to the metallurgical coke in a quicker time, and without use of any susceptors.
    Type: Application
    Filed: February 6, 2019
    Publication date: February 11, 2021
    Applicants: TATA STEEL LIMITED, THE UNIVERSITY OF NOTTINGHAM
    Inventors: Bidyut Das, Sanjay Chandra, Atanu Ranjan Pal, Pratik Swarup Dash, Munish Sudan, Eleanor Binner, Christopher Dodds, Edward Henry Lester, Orla Williams, Samuel Kingman
  • Patent number: 8647400
    Abstract: A beneficiation process to produce low ash clean coal from high ash coals, including: preparing a coal slurry from fine coal and water and discharging it to a first reactor; preparing an alkali solution and discharging it to a first reactor; carrying-out a leaching reaction inside the first reactor; transferring the reaction mixture to a second reactor for filtration and washing to produce a filter cake; preparing a diluted acid solution and delivering it to a second reactor; preparing a diluted alkali solution and delivering it to a second reactor; feeding a coal slurry prepared from the filter cake into the second reactor for washing and transferring to a second filtration unit; transferring the product after filtration to a third reactor; carrying-out different leaching reaction sequences in the first, second, and third reactors; and transferring to a fifth tank the treated coal filter cake for drying.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: February 11, 2014
    Assignee: Tata Steel Limited
    Inventors: Pratik Swarup Dash, Pradip Kumar Banerjee, Debashish Bhattachargee, Tridibesh Mukherjee, Saibal Ganguly