Patents by Inventor Franklin J. Ehrensbeck

Franklin J. Ehrensbeck 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).

  • THERMOPLASTIC COMPOSITIONS AND SHAPED ARTICLES THEREOF
    Publication number: 20220389223
    Abstract: A thermoplastic composition comprising: a homopolycarbonate; a poly(carbonate siloxane) component present in an amount effective to provide 0.5-20 wt % total siloxane content; an antimicrobial agent comprising silver zirconium phosphate, silver phosphate glass, or a combination thereof; optionally, an additive composition; each based on the total weight of the composition which totals to 100 wt %.
    Type: Application
    Filed: June 7, 2022
    Publication date: December 8, 2022
    Inventors: Yunfei He, Yun Zheng, Wei Shan, Rui Gao, Yuntao Li, Hao Zhou, Franklin J. Ehrensbeck, Laura Mely Ramirez, Peter Vollenberg, Sarah E. Grieshaber
  • Processes for preparing polycarbonates with enhanced optical properties
    Patent number: 9403939
    Abstract: Processes for preparing high purity polycarbonates having high light transmission, low yellowness, and color stability are disclosed herein. High purity starting ingredients are used to form a polycarbonate powder. The polycarbonate powder can be subsequently melt extruded at an optimum shear rate to minimize yellowness and the need to add colorant to overcome the yellowness. The lower amount of colorant increases the light transmission of the resulting polycarbonate resin.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: August 2, 2016
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Vandita Pai-Paranjape, Franklin J. Ehrensbeck, James Franklin Hoover