Patents by Inventor Xuejia YAN

Xuejia YAN 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).

  • Publication number: 20230077569
    Abstract: Processes for forming a polypropylene composition are provided herein comprising the steps of making a first propylene-based copolymer having a molecular weight distribution between 3 to 8.5, and making a second propylene-based polymer in the presence of the first propylene-based polymer to produce the polypropylene composition having a high molecular weight tail in the amount of between 1.0 wt. % and 10.0 wt. %. The polypropylene compositions produced have a broad molecular weight distribution and high molecular weight tail to provide improved stiffness while retaining toughness.
    Type: Application
    Filed: February 12, 2021
    Publication date: March 16, 2023
    Applicant: ExxonMobil Chemical Patents Inc.
    Inventors: George J. PEHLERT, Ranadip GANGULY, Christopher G. BAUCH, Blu E. ENGLEHORN, Xiaodan ZHANG, Mark S. CHAHL, Kevin W. LAWSON, Xuejia YAN