Patents by Inventor Dibyendu Debnath

Dibyendu Debnath 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).

  • Polycarbonate block copolymers and methods thereof
    Patent number: 11634539
    Abstract: The present disclosure relates to block copolymers comprising, and methods of making thereof, a polycarbonate chain linked to a hydrophilic polymer. Such block copolymers may have the formula B-A-B, where A is a polycarbonate or polyethercarbonate chain and B is a polyether. Provided methods are useful in reducing the amount of waste generated from the synthesis of polycarbonates and provide improved thermal stability and high primary hydroxyl content. Provided block copolymers also have utility as additives in enhanced oil recovery methods, and foam polymer applications.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: April 25, 2023
    Assignee: Saudi Aramco Technologies Company
    Inventors: Scott D. Allen, Dibyendu Debnath
  • POLYCARBONATE BLOCK COPOLYMERS AND METHODS THEREOF
    Publication number: 20200095375
    Abstract: The present disclosure relates to block copolymers comprising, and methods of making thereof, a polycarbonate chain linked to a hydrophilic polymer. Such block copolymers may have the formula B-A-B, where A is a polycarbonate or polyethercarbonate chain and B is a polyether. Provided methods are useful in reducing the amount of waste generated from the synthesis of polycarbonates and provide improved thermal stability and high primary hydroxyl content. Provided block copolymers also have utility as additives in enhanced oil recovery methods, and foam polymer applications.
    Type: Application
    Filed: September 24, 2019
    Publication date: March 26, 2020
    Inventors: Scott D. Allen, Dibyendu Debnath