Patents by Inventor Hanif Ahmed CHOUDHURY

Hanif Ahmed CHOUDHURY 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: 20250019233
    Abstract: A retrofitted gas to liquid (GTL) process implemented with CARGEN® technology is provided. The retrofitting modifications enable significant greenhouse gas (CO2, CH4, volatile organic compounds, and the like) conversion via CARGEN® technology to produce carbon material and syngas. The carbon material produced by the CARGEN® technology can include amorphous carbon, carbon black, carbon nanotubes, and other allotropes of carbon. The carbon material can be used in a number of different and suitable applications, including, for example, cement industry, steel industry, rubber enforced manufacturing, to fully sequester CO2. On the other hand, the produced syngas from the retrofitted GTL plant may be used to produce, for example, ultra-clean fuels, chemicals, and other value-added processes using Fischer-Tropsch process.
    Type: Application
    Filed: November 9, 2022
    Publication date: January 16, 2025
    Inventors: Nimir O. Elbashir, MohamedSufiyan A. Challiwala, Hanif Ahmed Choudhury, Zeinab Ataya, Debalina Sengupta, Mahmoud M. El-Halwagi
  • Publication number: 20240382921
    Abstract: A reactor configuration, system and method for producing a carbon material and a syngas, such as, for CARGEN® technology, are provided. The reactor configuration, system and method includes/utilizes a reactor including a fluidized bed reactor having one or more vertical reactor tubes, or the reactor system includes a chemical vapor deposition reactor including one or more horizontal reactor tubes.
    Type: Application
    Filed: February 8, 2024
    Publication date: November 21, 2024
    Inventors: Nimir O. ELBASHIR, Mohamedsufiyan Azizurrehman CHALLIWALA, Hanif Ahmed CHOUDHURY
  • Patent number: 12128388
    Abstract: A method to regenerate and reactivate catalysts used for a carbon and syngas production reaction including a DRM or CARGEN reaction is developed. Carbon dioxide (CO2) is used as the regeneration and activation media. This method of a single step regeneration and activation using CO2 is more effective than the existing conventional two-step process that includes separate reduction and oxidation steps. This method produces pure carbon monoxide (CO) as a byproduct from the regeneration process by utilizing CO2 and carbon.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: October 29, 2024
    Assignee: QATAR FOUNDATION FOR EDUCATION, SCIENCE AND COMMUNITY DEVELOPMENT
    Inventors: Nimir O. Elbashir, Mohamed Sufiyan A. Challiwala, Hanif Ahmed Choudhury
  • Patent number: 12060325
    Abstract: Disclosed is a high yield, high selectivity and high conversion method to produce Dimethyl Carbonate (DMC) from carbon dioxide (CO2) and methanol (MeOH) using optimized concentration of ethylene oxide as water scavenger. The method provides an alternative and optimized solution towards the problem of formation of water in DMC synthesis by reporting optimal feed ratio and scavenger to MeOH feed ratio. The disclosure also discloses an optimal pressure condition that could have significant impact on economy of compression of the feed to the DMC reactor.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: August 13, 2024
    Assignee: QATAR FOUNDATION FOR EDUCATION, SCIENCE AND COMMUNITY DEVELOPMENT
    Inventors: Nimir O. Elbashir, Hanif Ahmed Choudhury, Mohamedsufiyan Azizurrehman Challiwala
  • Publication number: 20230039945
    Abstract: Disclosed is high conversion and high carbon yielding CARGEN catalyst and a method of preparing the same. The catalyst comprises transition metals that may be supported or unsupported. The preparation method involves mixing a metal material with or without a support in a standard ball milling apparatus to produce a fine and homogenous solid mixture of the transition metal oxide and support. The catalyst is used in the CARGEN system.
    Type: Application
    Filed: October 9, 2020
    Publication date: February 9, 2023
    Inventors: Nimir O. ELBASHIR, Mohamedsufiyan Azizurrehman CHALLIWALA, Hanif Ahmed CHOUDHURY
  • Publication number: 20230024777
    Abstract: A method to regenerate and reactivate catalysts used for a carbon and syngas production reaction including a DRM or CARGEN reaction is developed. Carbon dioxide (CO2) is used as the regeneration and activation media. This method of a single step regeneration and activation using CO2 is more effective than the existing conventional two-step process that includes separate reduction and oxidation steps. This method produces pure carbon monoxide (CO) as a byproduct from the regeneration process by utilizing CO2 and carbon.
    Type: Application
    Filed: March 13, 2019
    Publication date: January 26, 2023
    Inventors: Nimir O. ELBASHIR, Mohamed Sufiyan A. CHALLIWALA, Hanif Ahmed CHOUDHURY
  • Publication number: 20230024976
    Abstract: Disclosed is a high yield, high selectivity and high conversion method to produce Dimethyl Carbonate (DMC) from carbon dioxide (CO2) and methanol (MeOH) using optimized concentration of ethylene oxide as water scavenger. The method provides an alternative and optimized solution towards the problem of formation of water in DMC synthesis by reporting optimal feed ratio and scavenger to MeOH feed ratio. The disclosure also discloses an optimal pressure condition that could have significant impact on economy of compression of the feed to the DMC reactor.
    Type: Application
    Filed: July 29, 2020
    Publication date: January 26, 2023
    Inventors: Nimir O. ELBASHIR, Hanif Ahmed CHOUDHURY, Mohamedsufiyan Azizurrehman CHALLIWALA