Patents by Inventor Michael Richard Hartzell

Michael Richard Hartzell 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).

  • PURIFIED GUAYULE NATURAL RUBBER AND RELATED PROCESSES
    Publication number: 20240336708
    Abstract: A purified guayule natural rubber is provided which has a particular Mw, Mn, Mw/Mn, resin content and ash content. Also provided are related processes for obtaining the purified guayule natural rubber from an initial co-solvent based miscella which contains solubilized guayule rubber, at least one polar solvent and at least one non-polar solvent using a fractionation system.
    Type: Application
    Filed: October 6, 2022
    Publication date: October 10, 2024
    Applicant: Bridgestone Corporation
    Inventors: Michael Richard Hartzell, Robert Ward White, Taigyoo Park, Mark DeDecker, Yingyi Huang