Patents by Inventor John G. Tunnell

John G. Tunnell 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).

  • Free-flowing polymer composition
    Patent number: 11345774
    Abstract: A block copolymer composition is disclosed. The composition contains an elastomeric block copolymer and a hydrophilic fumed silica with a surface area (BET, measured by nitrogen gas adsorption) of at least 200 m2/g, and a pH of 3 to 5, a tamped density of <=75 g/L. The block copolymer composition forms free-flowing composition, requiring less than 400 lbs/ft2 to break in a blocking test. The free-flowing composition does not negatively impact haze, transparency, and yellowness of transparent compounds, suitable for use in transparent formulations for medical, toys, and overmolds, viscosified oils, and oil gels applications.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: May 31, 2022
    Assignee: KRATON POLYMERS LLC
    Inventors: John G. Tunnell, Aaron Brothers, Kathryn J Wright, Robert C Bening
  • FREE-FLOWING POLYMER COMPOSITION
    Publication number: 20200079891
    Abstract: A block copolymer composition is disclosed. The composition contains an elastomeric block copolymer and a hydrophilic fumed silica with a surface area (BET, measured by nitrogen gas adsorption) of at least 200 m2/g, and a pH of 3 to 5, a tamped density of <=75 g/L. The block copolymer composition forms free-flowing composition, requiring less than 400 lbs/ft2 to break in a blocking test. The free-flowing composition does not negatively impact haze, transparency, and yellowness of transparent compounds, suitable for use in transparent formulations for medical, toys, and overmolds, viscosified oils, and oil gels applications.
    Type: Application
    Filed: August 30, 2019
    Publication date: March 12, 2020
    Applicant: KRATON POLYMERS LLC
    Inventors: John G. Tunnell, Aaron Brothers, Kathryn J. Wright, Robert C. Bening