Patents by Inventor Orlando J. Rojas

Orlando J. Rojas 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).

  • Patent number: 11827722
    Abstract: Mechanically strong, biodegradable and reusable aerogels are disclosed, which can be made with a cross-linked cellulose ester, and which exhibit a low density and high porosity. The aerogels disclosed herein may be used as sorbent materials and can be modified with a hydrophobic and/or oleophilic agent.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: November 28, 2023
    Assignee: North Carolina State University
    Inventors: Anurodh Tripathi, Saad A. Khan, Orlando J. Rojas, Gregory N. Parsons, Jeremy Kenneth Steach, Jos Simon de Wit, S. M. Bedarul Islam, Jacob Donald Goodrich
  • Publication number: 20210380725
    Abstract: Mechanically strong, biodegradable and reusable aerogels are disclosed, which can be made with a cross-linked cellulose ester, and which exhibit a low density and high porosity. The aerogels disclosed herein may be used as sorbent materials and can be modified with a hydrophobic and/or oleophilic agent.
    Type: Application
    Filed: June 23, 2021
    Publication date: December 9, 2021
    Inventors: Anurodh Tripathi, Saad A. Khan, Orlando J. Rojas, Gregory N. Parsons, Jeremy Kenneth Steach, Jos Simon de Wit, S.M. Bedarul Islam, Jacob Donald Goodrich
  • Patent number: 11118106
    Abstract: Included are methods and systems for controlling the rheology of a treatment fluid. An example method comprises selecting a cellulose feedstock source to provide a cellulose capable of being processed into a nanocellulose having an average desired aspect ratio, and processing the cellulose with a cellulose processing technique to provide the nanocellulose with the average desired aspect ratio. The method further comprises adding the nanocellulose to the treatment fluid; wherein the nanocellulose alters a rheological property of the treatment fluid to provide an altered treatment fluid, and introducing the altered treatment fluid into a wellbore.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: September 14, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Lee J. Hall, Carlos L. Salas, Orlando J. Rojas
  • Patent number: 10781138
    Abstract: A wellbore treatment fluid comprising: a base fluid; and an additive comprising: a first polymer bundle selected from the group consisting of cellulose nanofibrils, cellulose nanocrystals, and combinations thereof; and a second polymer, wherein the second polymer attaches to the first polymer bundle by a non-covalent mechanism. A method of treating a portion of a wellbore comprising: introducing the treatment fluid into the wellbore.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: September 22, 2020
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Lee J. Hall, Jay P. Deville, Orlando J. Rojas, Carlos A. Carrillo, Carlos L. Salas
  • Publication number: 20200263081
    Abstract: Included are methods and systems for controlling the rheology of a treatment fluid. An example method comprises selecting a cellulose feedstock source to provide a cellulose capable of being processed into a nanocellulose having an average desired aspect ratio, and processing the cellulose with a cellulose processing technique to provide the nanocellulose with the average desired aspect ratio. The method further comprises adding the nanocellulose to the treatment fluid; wherein the nanocellulose alters a rheological property of the treatment fluid to provide an altered treatment fluid, and introducing the altered treatment fluid into a wellbore.
    Type: Application
    Filed: December 20, 2017
    Publication date: August 20, 2020
    Inventors: Lee J. HALL, Carlos L. SALAS, Orlando J. ROJAS
  • Patent number: 10294403
    Abstract: A wellbore treatment fluid comprising: a base fluid; and additive comprising a first polymer bundle selected from the group consisting of cellulose nanofibrils, cellulose nanocrystals, and combinations thereof, wherein one or more functional groups of the first polymer are chemically modified A method of treating a portion of a wellbore comprising: introducing the treatment fluid into the wellbore.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: May 21, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Lee J. Hall, Jay P. Deville, Orlando J. Rojas, Carlos A. Carrillo, Carlos L. Salas
  • Publication number: 20190085098
    Abstract: Mechanically strong, biodegradable and reusable aerogels are disclosed, which can be made with a cross-linked cellulose ester, and which exhibit a low density and high porosity. The aerogels disclosed herein may be used as sorbent materials and can be modified with a hydrophobic and/or oleophilic agent.
    Type: Application
    Filed: January 23, 2017
    Publication date: March 21, 2019
    Inventors: Anurodh Tripathi, Saad A. Khan, Orlando J. Rojas, Gregory N. Parsons, Jeremy Kenneth Steach, Jos Simon de Wit, S.M. Bedarul Islam, Jacob Donald Goodrich
  • Publication number: 20170341979
    Abstract: A wellbore treatment fluid comprising: a base fluid; and an additive comprising: a first polymer bundle selected from the group consisting of cellulose nanofibrils, cellulose nanocrystals, and combinations thereof; and a second polymer, wherein the second polymer attaches to the first polymer bundle by a non-covalent mechanism. A method of treating a portion of a wellbore comprising: introducing the treatment fluid into the wellbore.
    Type: Application
    Filed: December 19, 2014
    Publication date: November 30, 2017
    Inventors: Lee J. HALL, Jay P. DEVILLE, Orlando J. ROJAS, Carlos A. CARRILLO, Carlos L. SALAS
  • Publication number: 20170253786
    Abstract: A wellbore treatment fluid comprising: a base fluid; and additive comprising a first polymer bundle selected from the group consisting of cellulose nanofibrils, cellulose nanocrystals, and combinations thereof, wherein one or more functional groups of the first polymer are chemically modified A method of treating a portion of a wellbore comprising: introducing the treatment fluid into the wellbore.
    Type: Application
    Filed: December 19, 2014
    Publication date: September 7, 2017
    Inventors: Lee J. Hall, Jay P. Deville, Orlando J. Rojas, Carlos A. Carrillo, Carlos L. Salas