Patents by Inventor Abderrahman MAHFOUD

Abderrahman MAHFOUD 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).

  • PROCESS FOR REMOVING H2S FROM GAS STREAM BY CALCIUM BASED REACTION SEPARATION
    Publication number: 20180318759
    Abstract: There are provided processes for removing H2S from a gas. The processes comprise contacting the gas with an aqueous composition comprising at least one calcium compound, thereby obtaining CaS and a H2S lean treated gas stream, while maintaining the pH at about 9.5 to about 13.0; and contacting the CaS with an aqueous oxidant solution, converting the CaS into at least one of CaSO3 and CaSO4, while maintaining the pH at about 9.5 to about 13.0.
    Type: Application
    Filed: October 23, 2015
    Publication date: November 8, 2018
    Inventors: Stéphane CHABOT, Yves CHAREST, Martin BEAULIEU, Abderrahman MAHFOUD
  • Process for removing H2S from gas stream by calcium based reaction separation
    Patent number: 10118125
    Abstract: There are provided processes for removing H2S from a gas. The processes comprise contacting the gas with an aqueous composition comprising at least one calcium compound, thereby obtaining CaS and a H2S lean treated gas stream, while maintaining the pH at about 9.5 to about 13.0; and contacting the CaS with an aqueous oxidant solution, converting the CaS into at least one of CaSO3 and CaSO4, while maintaining the pH at about 9.5 to about 13.0.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: November 6, 2018
    Assignee: EXP SERVICES INC.
    Inventors: Stéphane Chabot, Yves Charest, Martin Beaulieu, Abderrahman Mahfoud
  • Process for reducing the content of water soluble volatile organic compounds in a gas
    Patent number: 9574122
    Abstract: There is provided a method for reducing the content of at least one water soluble volatile organic compound in a gas. The method comprises contacting the gas with an aqueous acidic oxidizing composition comprising H2O2 and a metal catalyst, and submitting the at least one water soluble volatile organic compound and the aqueous acidic oxidizing composition to an UV radiation.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: February 21, 2017
    Assignees: Uniboard Canada Inc., EXP Services Inc.
    Inventors: Pierre-André Gignac, Martin Beaulieu, Yves Charest, Stéphane Chabot, Abderrahman Mahfoud, Jules Lemay
  • PROCESS FOR REDUCING THE CONTENT OF WATER SOLUBLE VOLATILE ORGANIC COMPOUNDS IN A GAS
    Publication number: 20100258428
    Abstract: There is provided a method for reducing the content of at least one water soluble volatile organic compound in a gas. The method comprises contacting the gas with an aqueous acidic oxidizing composition comprising H2O2 and a metal catalyst, and submitting the at least one water soluble volatile organic compound and the aqueous acidic oxidizing composition to an UV radiation.
    Type: Application
    Filed: April 14, 2010
    Publication date: October 14, 2010
    Inventors: Pierre-André GIGNAC, Martin BEAULIEU, Yves CHAREST, Stéphane CHABOT, Abderrahman MAHFOUD, Jules LEMAY