Patents by Inventor George R. Rajaendran

George R. Rajaendran 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).

  • Methods for restoring metallocene solids exposed to air
    Patent number: 10550208
    Abstract: Methods for treating solid metallocene compounds that are exposed to air are disclosed. These methods include a step of contacting the exposed solid metallocene compound with a purging gas stream containing an inert gas, and optionally, subjecting the exposed solid metallocene compound to a sub-atmospheric pressure.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: February 4, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Tony R. Crain, George R. Rajaendran
  • Methods for Restoring Metallocene Solids Exposed to Air
    Publication number: 20190144572
    Abstract: Methods for treating solid metallocene compounds that are exposed to air are disclosed. These methods include a step of contacting the exposed solid metallocene compound with a purging gas stream containing an inert gas, and optionally, subjecting the exposed solid metallocene compound to a sub-atmospheric pressure.
    Type: Application
    Filed: January 17, 2019
    Publication date: May 16, 2019
    Inventors: Qing Yang, Tony R. Crain, George R. Rajaendran
  • Methods for restoring metallocene solids exposed to air
    Patent number: 10221258
    Abstract: Methods for treating solid metallocene compounds that are exposed to air are disclosed. These methods include a step of contacting the exposed solid metallocene compound with a purging gas stream containing an inert gas, and optionally, subjecting the exposed solid metallocene compound to a sub-atmospheric pressure.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: March 5, 2019
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Tony R. Crain, George R. Rajaendran
  • Methods for Restoring Metallocene Solids Exposed to Air
    Publication number: 20180265606
    Abstract: Methods for treating solid metallocene compounds that are exposed to air are disclosed. These methods include a step of contacting the exposed solid metallocene compound with a purging gas stream containing an inert gas, and optionally, subjecting the exposed solid metallocene compound to a sub-atmospheric pressure.
    Type: Application
    Filed: March 17, 2017
    Publication date: September 20, 2018
    Inventors: Qing Yang, Tony R. Crain, George R. Rajaendran
  • Methods for removing polymer skins from reactor walls
    Patent number: 8487053
    Abstract: Methods for removing polymer skins or build-up from reactor walls in polymerization reactor systems containing a loop slurry reactor are disclosed. Such methods can employ removing some or all of the comonomer from the reactor system in combination with increasing the polymerization temperature of the loop slurry reactor.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: July 16, 2013
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: George R. Rajaendran, Max P. McDaniel, Gregory G. Hendrickson, John D. Stewart, John D. Hottovy, Ted H. Cymbaluk, Susannah Lane, Richard A. Hernandez, Elliott W. Johnson, Qing Yang, William L. Valerioti, Eric Schwerdtfeger, Albert P. Masino
  • Methods for Removing Polymer Skins from Reactor Walls
    Publication number: 20130137836
    Abstract: Methods for removing polymer skins or build-up from reactor walls in polymerization reactor systems containing a loop slurry reactor are disclosed. Such methods can employ removing some or all of the comonomer from the reactor system in combination with increasing the polymerization temperature of the loop slurry reactor.
    Type: Application
    Filed: November 30, 2011
    Publication date: May 30, 2013
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: George R. Rajaendran, Max P. McDaniel, Gregory G. Hendrickson, John D. Stewart, John D. Hottovy, Ted H. Cymbaluk, Suzannah Lane, Richard A. Hernandez, Elliott W. Johnson, Qing Yang, William L. Valerioti, Eric Schwerdtfeger, Albert P. Masino