Patents by Inventor Cuiwei Zhang

Cuiwei Zhang 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).

  • SUSTAINED RELEASE COMPOSITION USING BIOBASED BIODEGRADABLE HYPERBRANCHED POLYESTERS
    Publication number: 20200262974
    Abstract: The present invention provides a sustained release composition having hyperbranched polymers that are polyesters that are biobased and biodegradable, and that have at least one active ingredient, which composition delivers the active ingredient over time. These active ingredients can be a wide variety of compounds so long as they can covalently bind to the polymer or be encapsulated in the polymer in a manner that is released at the point of delivery, usually by acid hydrolysis or enzymatic bond scission.
    Type: Application
    Filed: May 6, 2020
    Publication date: August 20, 2020
    Inventors: Patrick B. Smith, Bobby A. Howell, Cuiwei Zhang
  • SUSTAINED RELEASE COMPOSITION USING BIOBASED BIODEGRADABLE HYPERBRANCHED POLYESTERS
    Publication number: 20170073465
    Abstract: The present invention provides a sustained release composition having hyperbranched polymers that are polyesters that are biobased and biodegradable, and that have at least one active ingredient, which composition delivers the active ingredient over time. These active ingredients can be a wide variety of compounds so long as they can covalently bind to the polymer or be encapsulated in the polymer in a manner that is released at the point of delivery, usually by acid hydrolysis or enzymatic bond scission.
    Type: Application
    Filed: February 23, 2015
    Publication date: March 16, 2017
    Inventors: Patrick B. Smith, Bobby A. Howell, Cuiwei Zhang