Patents by Inventor Bairu Liu

Bairu Liu 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).

  • High flash point fluids for in situ plasticization of polymers
    Patent number: 9878486
    Abstract: An in situ method to deploy and/or plasticize a shape-memory material in order to change the material's physical dimensions and/or mechanical properties, includes a method for deploying a shape memory polymer having a deformed or compressed shape in an environment at a first temperature, the shape memory polymer having a first glass transition temperature which is greater than the first temperature. The method also includes contacting the shape memory polymer with an activation fluid in an amount effective to decrease the glass transition temperature of the shape memory polymer from the first glass transition temperature to a second glass transition temperature which is less than or equal to the first temperature, where the activation fluid comprises a sugar present in an amount effective to raise a flash point of the activation fluid.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: January 30, 2018
    Assignee: Baker Hughes, a GE company, LLC
    Inventors: Bairu Liu, Anil Sadana, James B. Crews
  • HIGH FLASH POINT FLUIDS FOR IN SITU PLASTICIZATION OF POLYMERS
    Publication number: 20160208574
    Abstract: An in situ method to deploy and/or plasticize a shape-memory material in order to change the material's physical dimensions and/or mechanical properties, includes a method for deploying a shape memory polymer having a deformed or compressed shape in an environment at a first temperature, the shape memory polymer having a first glass transition temperature which is greater than the first temperature. The method also includes contacting the shape memory polymer with an activation fluid in an amount effective to decrease the glass transition temperature of the shape memory polymer from the first glass transition temperature to a second glass transition temperature which is less than or equal to the first temperature, where the activation fluid comprises a sugar present in an amount effective to raise a flash point of the activation fluid.
    Type: Application
    Filed: March 28, 2016
    Publication date: July 21, 2016
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: BAIRU LIU, ANIL SADANA, JAMES B. CREWS
  • In Situ Plasticization of Polymers For Actuation or Mechanical Property Change
    Publication number: 20140020910
    Abstract: An in situ method deploy and/or plasticize a shape-memory material in order to change the material's physical dimensions and/or mechanical properties, including a method for deploying a shape-memory polymer having a deformed or compressed shape in an environment at a first temperature, the shape memory polymer having a first glass transition temperature which is greater than the first temperature. The method also includes decreasing the glass transition temperature of shape memory polymer from the first glass transition temperature to a second glass transition temperature which is less than or equal to the first temperature; and expanding the shape memory polymer to deploy the shape memory polymer in a deployed shape.
    Type: Application
    Filed: September 20, 2013
    Publication date: January 23, 2014
    Applicant: Baker Hughes Incorporated
    Inventors: JOSHUA C. FALKNER, Bairu Liu, Chau Vu, Ramon R. Garza, John C. Welch, Vu Thieu, Anil K. Sadana