Patents by Inventor Adolphus G. Jones

Adolphus G. Jones 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).

  • Resorbable polymer purification process
    Patent number: 11261293
    Abstract: The present invention is directed to an improved purification process using additive and activated carbon for purifying resorbable polymers suitable for industrial manufacturing. The metal catalyst concentration in the purified resorbable polymers of this invention is preferably less than 1 ppm. The method can be used to obtain high molecular weight polymers that are substantially metal free.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: March 1, 2022
    Assignee: Evonik Corporation
    Inventors: Jie Lu, Boris Obermeier, Regina Arnold-Stanton, Adolphus G. Jones
  • IMPROVED RESORBABLE POLYMER PURIFICATION PROCESS
    Publication number: 20200190258
    Abstract: The present invention is directed to an improved purification process using additive and activated carbon for purifying resorbable polymers suitable for industrial manufacturing. The metal catalyst concentration in the purified resorbable polymers of this invention is preferably less than 1 ppm. The method can be used to obtain high molecular weight polymers that are substantially metal free.
    Type: Application
    Filed: August 31, 2018
    Publication date: June 18, 2020
    Inventors: Jie Lu, Boris Obermeier, Regina Arnold-Stanton, Adolphus G. Jones