Patents by Inventor Supriyo Das

Supriyo Das 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).

  • Filtration and reuse of surfactant-containing produced water for oil recovery
    Patent number: 10245560
    Abstract: A method for recovering oil from an oil bearing formation including the steps of: i) recovering an oil-water mixture from the oil-bearing formation; ii) separating at least a portion of the oil from the oil-water mixture to form a produced water; iii) adding a polymeric alkylene oxide surfactant having a Mw of less than 10000 Da to the produced water; iv) passing the produced water through a polymeric membrane to form a permeate stream and a retentate stream; and v) injecting the permeate stream into the oil bearing formation.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: April 2, 2019
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Joydeep Mukherjee, Supriyo Das, Wanglin Yu, Claribel Acevedo Velez, Peter M. Rozowski, Susan K. Falcone-Potts
  • FILTRATION AND REUSE OF SURFACTANT-CONTAINING PRODUCED WATER FOR OIL RECOVERY
    Publication number: 20180296985
    Abstract: A method for recovering oil from an oil bearing formation including the steps of: i) recovering an oil-water mixture from the oil-bearing formation; ii) separating at least a portion of the oil from the oil-water mixture to form a produced water; iii) adding a polymeric alkylene oxide surfactant having a Mw of less than 10000 Da to the produced water; iv) passing the produced water through a polymeric membrane to form a permeate stream and a retentate stream; and v) injecting the permeate stream into the oil bearing formation.
    Type: Application
    Filed: November 6, 2015
    Publication date: October 18, 2018
    Inventors: Joydeep Mukherjee, Supriyo Das, Wanglin Yu, Claribel Acevedo Velez, Peter M. Rozowski, Susan K. Falcone-Potts
  • CONE DYED YARNS OF OLEFIN BLOCK COMPOSITIONS
    Publication number: 20080171167
    Abstract: Improved cone dyed yarns have now been discovered which have a balanced combination of desirable properties including less broken fibers and substantially uniform color. These cone dyed yarns comprise one or more elastic fibers and hard fibers, wherein the elastic fibers comprise the reaction product of at least one ethylene olefin block polymer and at least one crosslinking agent.
    Type: Application
    Filed: January 16, 2008
    Publication date: July 17, 2008
    Applicant: Dow Global Technologies Inc.
    Inventors: Fabio D'Ottaviano, Alberto Lora Lamia, Hong Peng, Hongyu Chen, Yuen-Yuen D. Chiu, Jose M. Rego, Supriyo Das
  • Fibers and Knit Fabrics Comprising Olefin Block Interpolymers
    Publication number: 20080081854
    Abstract: Knit fabric compositions have now been discovered that often have a balanced combination of desirable properties. Said fabric compositions comprise olefin block interpolymers. These compositions allow for improved processability when manufacturing knitted fabrics.
    Type: Application
    Filed: September 6, 2007
    Publication date: April 3, 2008
    Applicant: Dow Global Technologies Inc.
    Inventors: Jerry Wang, Hongyu Chen, Yuen-Yuen Chiu, Shih-Yaw Lai, Fabio D'Ottaviano, Supriyo Das, Guido Bramante, Jose Rego