Patents by Inventor Firoz A. Chowdhury

Firoz A. Chowdhury 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).

  • Aqueous solution which efficiently absorbs and recovers carbon dioxide in exhaust gas, and method for recovering carbon dioxide using same
    Patent number: 9636628
    Abstract: Disclosed is an aqueous solution for absorbing and recovering carbon dioxide from a carbon dioxide-containing gas, the aqueous solution containing an amino alcohol compound represented by Formula 1 and an amine compound represented by Formula 2, wherein R represents an alkyl group having 1 to 5 carbon atoms; and n represents 1 or 2, wherein X represents —NR1R2; Y represents —NR3R4; R1, R2, R3 and R4 may be the same or different, and each represents an alkyl group having 1 to 3 carbon atoms; and m represents an integer of 3 to 7.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: May 2, 2017
    Assignees: Research Institute of Innovative Technology for the Earth, Nippon Steel & Sumitomo Metal Corporation
    Inventors: Takayuki Higashii, Firoz A. Chowdhury, Kazuya Goto, Masami Onoda, Yoichi Matsuzaki
  • AQUEOUS SOLUTION WHICH EFFICIENTLY ABSORBS AND RECOVERS CARBON DIOXIDE IN EXHAUST GAS, AND METHOD FOR RECOVERING CARBON DIOXIDE USING SAME
    Publication number: 20150007728
    Abstract: Disclosed is an aqueous solution for absorbing and recovering carbon dioxide from a carbon dioxide-containing gas, the aqueous solution containing an amino alcohol compound represented by Formula I and an amine compound represented by Formula 2, wherein R represents an alkyl group having 1 to 5 carbon atoms; and n represents 1 or 2, wherein X represents —NR1R2; Y represents —NR3R4; R1, R2, R3 and R4 may be the same or different, and each represents an alkyl group having 1 to 3 carbon atoms; and m represents an integer of 3 to 7.
    Type: Application
    Filed: February 7, 2013
    Publication date: January 8, 2015
    Inventors: Takayuki Higashii, Firoz A. Chowdhury, Kazuya Goto, Masami Onoda, Yoichi Matsuzaki