Patents by Inventor Katrina Pangilinan

Katrina Pangilinan 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).

  • Suspending proppants with polymerized hydrogels
    Patent number: 10836957
    Abstract: Hydrogel-coated proppants and methods for manufacture thereof. In preferred embodiments, the hydrogel coating is covalently attached and crosslinked to the proppant substrate in a core-shell structure. The enhanced proppant provides great flexibility in terms of functionalities that can be incorporated into the hydrogel coating. Also, the swelling behavior and mechanical properties of the hydrogel coating can be tailored as desired by varying the amounts of components in the composition such as monomer, crosslinker, polymer, silane comonomer, and initiator.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: November 17, 2020
    Assignee: CASE WESTERN RESERVE UNIVERSITY
    Inventors: Katrina Pangilinan, Al de Leon, Rigoberto Advincula
  • SUSPENDING PROPPANTS WITH POLYMERIZED HYDROGELS
    Publication number: 20180119006
    Abstract: Hydrogel-coated proppants and methods for manufacture thereof. In preferred embodiments, the hydrogel coating is covalently attached and crosslinked to the proppant substrate in a core-shell structure. The enhanced proppant provides great flexibility in terms of functionalities that can be incorporated into the hydrogel coating. Also, the swelling behavior and mechanical properties of the hydrogel coating can be tailored as desired by varying the amounts of components in the composition such as monomer, crosslinker, polymer, silane comonomer, and initiator.
    Type: Application
    Filed: October 31, 2017
    Publication date: May 3, 2018
    Inventors: Katrina Pangilinan, Al de Leon, Rigoberto Advincula